Java is a versatile, object-oriented programming language that is widely used for software development across various industries. Java Developers can help clients create anything from complex web applications to automated trading bots and mobile apps. With their advanced skills and knowledge, they can turn your vision into reality, providing you with tailored solutions that align with your business goals. Here are some recent projects that our expert Java Developers made real:

  • Developing custom GUIs for existing codebases
  • Creating encrypted, secure crypto apps
  • Designing cross-platform audio merging tools for mobile devices
  • Building sophisticated trading bots for the cryptocurrency market
  • Implementing open-source virtual machines in C
  • Collaborating as senior developers on large-scale Android projects
  • Solving server request errors for mobile applications
  • Running and optimizing code from Git repositories
  • Designing and implementing web services for seamless integration

Hiring Java Developers on Freelancer.com gives you access to a global pool of talented professionals who can deliver high-quality solutions tailored to your needs. Our platform makes it easy and convenient to find, hire, and collaborate with skilled Java experts from around the world. So why wait? Bring your ideas to life by posting your own project and hiring a Java Developer on Freelancer.com today!

From 243,970 reviews, clients rate our Java Developers 4.9 out of 5 stars.
Hire Java Developers

Java is a versatile, object-oriented programming language that is widely used for software development across various industries. Java Developers can help clients create anything from complex web applications to automated trading bots and mobile apps. With their advanced skills and knowledge, they can turn your vision into reality, providing you with tailored solutions that align with your business goals. Here are some recent projects that our expert Java Developers made real:

  • Developing custom GUIs for existing codebases
  • Creating encrypted, secure crypto apps
  • Designing cross-platform audio merging tools for mobile devices
  • Building sophisticated trading bots for the cryptocurrency market
  • Implementing open-source virtual machines in C
  • Collaborating as senior developers on large-scale Android projects
  • Solving server request errors for mobile applications
  • Running and optimizing code from Git repositories
  • Designing and implementing web services for seamless integration

Hiring Java Developers on Freelancer.com gives you access to a global pool of talented professionals who can deliver high-quality solutions tailored to your needs. Our platform makes it easy and convenient to find, hire, and collaborate with skilled Java experts from around the world. So why wait? Bring your ideas to life by posting your own project and hiring a Java Developer on Freelancer.com today!

From 243,970 reviews, clients rate our Java Developers 4.9 out of 5 stars.
Hire Java Developers

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    I need the official open-source Java backed of our project deployed, configured, and ready for continuous delivery. The source code is stable; what’s missing is a production-grade environment that handles build, test, and roll-out with minimal manual touch points. Here is the flow I have in mind: 1. Hybrid database approach Distributed Cluster (3 VPS server) 2. Containerize the application with Docker and automate builds via Maven or Gradle. 3. Primary Databases for Chat History Cassandra (NoSQL) 4. Secondary Databases PostgreSQL (for users Metadata) on the codebase’s data model. 5. Redis : Presence/Session 6. Backed Language: Spring Boot Java 21/25 with RabbitMQ,and Maven or Gradle configuratio 7. Real-time: WebSockets for bidirectional communication 8. also preferred ...

    $103 Average bid
    $103 Avg Bid
    14 bids

    I'm looking for an experienced programmer to create a custom plugin/mod for the upcoming Spellbound SMP. All details for the plugin can be found in the document below. On this SMP, I'd like the first hostile mob a player kills to grant that player a buff, based on the mob in question. This assigned buff can only be reversed via use of a Reset Star, the recipe for which is also found in my doc. Our budget to start is $100, although a larger price is negotiable. I've wanted to do this for a very long time, and it'd mean a lot to me and my community if you can help me with it. It should go without saying that you'll be fully credited for your work in the descriptions of all my videos, and if you'd like to join the SMP once this is done, you can. I'd prefe...

    $130 Average bid
    $130 Avg Bid
    38 bids

    I’ve reached the final polishing phase of my mobile game and now need a fresh set of eyes to put every Android build through its paces. Your task is to install each release on real devices (emulators alone will not be enough), explore every menu, level, and feature, and then document anything that feels broken, confusing, unbalanced, or sluggish. Please capture issues in clear English, attach screenshots or screen-recordings where visuals help, and note the device model, OS version, and steps to reproduce so my dev team can act on them quickly. Performance metrics such as load times, frame-rate drops, battery drain, and unexpected data usage are especially valuable. I’ll share the current APK, change-log, and a brief list of focus areas as soon as we start. We’ll wo...

    $12 Average bid
    $12 Avg Bid
    10 bids

    The FIGMA for my credit-card-offers app is complete; now I need the server-side engine that will make the screens come alive. The scope is an MVP-ready backend built from scratch, including both the API layer and a brand-new database. The will work in sync with a browser extension being developed separately. I haven’t committed to a tech stack yet, so feel free to suggest Node.js, Python, Java, or another modern choice you’re comfortable maintaining. Whichever stack you choose, I expect. Need to develop both Android and iOS.

    $1087 Average bid
    $1087 Avg Bid
    203 bids

    I need a clean, modern Android application that lets diners browse our menu with attractive photos, clear prices, and smooth yet simple animations. Customers will be able to place an order straight from the app; instead of a payment gateway the order screen will simply present the restaurant’s phone number so they can call or message us to confirm. Only dish names and prices should appear—no long ingredient lists—and absolutely no purchase-history screen is to be stored or shown. An admin area must exist, hidden behind a single secret code. Once inside, the authorised person can add, remove, or swap dish names, photos, and prices. No other user should even see that this option exists. Deliverables • Full Android Studio project and signed APK • Admin code ...

    $145 Average bid
    $145 Avg Bid
    62 bids

    I need structured, beginner-friendly coaching that will take me from “hello world” to employable in Natural Language Processing. My goal is to understand core NLP concepts, build a small portfolio of projects, and feel confident discussing them in interviews. I already code a little in Python but have no formal NLP background. I’d like to cover the foundations—tokenisation, embeddings, transformers—then progress to hands-on mini-projects using libraries such as spaCy, Hugging Face, TensorFlow or PyTorch. Guidance on best practices for data preprocessing, model selection, evaluation and error analysis is essential, along with tips on how to present this work in a résumé or GitHub repo. Deliverables I have in mind: • A personalised learning ...

    $780 Average bid
    $780 Avg Bid
    67 bids

    I’ve reached the final polishing phase of my mobile game and now need a fresh set of eyes to put every Android build through its paces. Your task is to install each release on real devices (emulators alone will not be enough), explore every menu, level, and feature, and then document anything that feels broken, confusing, unbalanced, or sluggish. Please capture issues in clear English, attach screenshots or screen-recordings where visuals help, and note the device model, OS version, and steps to reproduce so my dev team can act on them quickly. Performance metrics such as load times, frame-rate drops, battery drain, and unexpected data usage are especially valuable. I’ll share the current APK, change-log, and a brief list of focus areas as soon as we start. We’ll wo...

    $18 / hr Average bid
    $18 / hr Avg Bid
    45 bids
    $24 / hr Avg Bid
    52 bids

    I'm looking for an experienced Java developer to build a web application using the Spring framework. The app needs to support user authentication, data management, and reporting and analytics functionalities. Key Requirements: - Robust user authentication system - Comprehensive data management capabilities - Advanced reporting and analytics features Ideal skills and experience: - Strong proficiency in Java and Spring framework - Experience in developing secure authentication mechanisms - Expertise in data management and analytics tools - Familiarity with web application architecture and design principles - Ability to write clean, maintainable code and work collaboratively Please provide your portfolio and relevant project experience.

    $10 / hr Average bid
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    26 bids

    We need an Android developer to add iPhone-style panorama to the Open Camera app (open source: ). Goal: Implement panorama in Open Camera so it works like iPhone: guided on-screen motion, smooth horizontal panning, and one stitched panorama image. • Works seamlessly on both the front and back cameras. • Guides the user with the same arrow-line UI Apple uses, keeping motion smooth and level. • Captures a continuous series of frames, stitches them on-device, and outputs one high-quality image without pushing memory limits. You’ll work only against the official Open Camera codebase (or a clean fork you create). I’ll take your branch and merge it into our own app later.

    $151 Average bid
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    22 bids
    Rename Android App Label/Icon
    6 days left
    Verified

    I need help changing the visible name of an Android application that is already installed (or will be installed shortly). I will supply the current package and the existing project files; the new label itself is still undecided, so I’m counting on you to make the switch once I confirm the wording. The task is limited to the app-name label only—no package-ID or code-level refactoring is required. I will just get the apk file from you and i will reinstall it to the device. Or you will just rename the application in my device.

    $21 Average bid
    $21 Avg Bid
    47 bids

    We are looking for a full-time Android developer to work remotely on an active commercial application that includes live streaming, video content, stores, payment systems, and delivery company integrations via API. Working Hours & Commitment: • 10 hours daily (remote). • Continuous screen sharing during working hours. • Pre-agreed break times are allowed. • Any interruption outside agreed breaks will be considered a breach. Main Responsibilities: • Fix existing bugs. • Develop and add new features. • Improve the menu system. • Enhance the live streaming system. • Improve code quality and structure. • Strengthen security and stability. • Optimize performance. • Adjust UI colors and layouts. • Align Android e...

    $15 / hr Average bid
    $15 / hr Avg Bid
    66 bids

    I’m looking for an independent developer who can take full ownership of designing and building an AI-driven chatbot from the ground up. At this stage I have a clear business need for an intelligent assistant but I’m open to your recommendations on the exact feature set, tech stack, and deployment channel. Here’s what I’ll rely on you to handle: • Scoping: translate my high-level objectives into a practical bot roadmap and recommend the most suitable NLP or LLM framework (e.g., Python with LangChain, Node.js, Dialogflow, Rasa, or another option you trust). • Architecture & Build: create the conversational flows, implement the model logic, and wire up any required APIs or data sources. • Training & Fine-tuning: curate or generate sample da...

    $18 / hr Average bid
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    122 bids

    I want to replicate the smooth, quick-credit experience that apps such as KreditBee and Money View deliver, but with my own branding and flow. The build is strictly for Android and must be submitted to – and accepted by – Google Play, so every screen, permission request, and data-handling practice has to comply with the latest Play Store lending and personal-loan policies. Core flow • Registration → basic details • KYC verification – Aadhaar/PAN capture, selfie match, secure API hand-off to a third-party service of your choice • Loan application and approval dashboard • Before loan disbursement, the app must harvest and store the user’s full contact list (names, phone numbers, email where available) after an explicit consent prompt ...

    $1184 Average bid
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    25 bids

    I want to launch a complete Android-based earning platform that feels modern and minimalistic from the first tap. The core of the product is an Android app tightly coupled with a web-based admin panel that lets me control every task and payout in real time. Monetisation & task flow • Before a user can start any task, a rewarded AdMob video must play—no exceptions. • Tasks focus on social engagement: liking, subscribing, following or commenting on YouTube, Facebook and TikTok content. Each completed task credits the user automatically. Payout methods Users must be able to cash out through JazzCash, EasyPaisa or USDT (TRC-20). The admin side should let me approve, hold or reject withdrawals with a single click and view totals per method. Security & anti-cheat...

    $137 Average bid
    $137 Avg Bid
    21 bids

    Project Title: Automated Web Scraper & AI Summarizer for Legal Documents (Italian Administrative Justice Portal) Project Overview: I need an automated workflow to monitor judicial rulings from the Italian Administrative Justice website (). The system should perform weekly searches based on dynamic keywords (e.g., "appalti"). Requirements: Web Scraping: Create a scraper (using Python/Playwright or Browse AI) that can bypass anti-bot protections, input keywords, and extract PDF links and metadata for rulings published in the last 7 days. Cloud Integration: Use (Integromat) to organize the results. For each keyword, create/update a specific Google Drive folder and upload the new PDFs. AI Processing: Integrate Google Gemini API to: Analyze the rulings within each folder. ...

    $199 Average bid
    $199 Avg Bid
    73 bids

    I need a complete astrology application whose core job is to generate accurate birth (natal) charts. A user should be able to enter date, exact time, and place of birth and instantly receive a visual chart with the usual planetary positions, house cusps and aspect table. Platforms The solution must run natively on Windows and through a Web interface; I would also like Mac OS support and, if you can package the same codebase into Android and iOS apps, even better. Please indicate how you plan to achieve this multi-platform reach—whether that is via Electron, Flutter, React/Node, or another framework that compiles to desktop, web, and mobile. Key requirements • High-precision ephemeris calculations so the chart data is reliable • Clean UI that shows the wheel, table...

    $302 Average bid
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    24 bids

    This homework requires a working Python program that respects every constraint my instructor set. Only the libraries covered in class may be imported—specifically NumPy, Pandas, and Matplotlib. A few lightweight SQL queries are acceptable, but no external packages beyond that list can appear in the final code. The assignment brief and its “AI usage” rules will be shared right after we start; the code must follow them to the letter. I need mid-level, object-oriented design, clear function separation, and comments in English so the grader can follow the logic. Deliverables • A single, well-commented .py file (or notebook, if advised in the brief) using only NumPy, Pandas, Matplotlib, and basic SQL. • A short README explaining how to run the script and where ...

    $20 / hr Average bid
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    69 bids

    deploying the official open-source backend components and integrating them with various third-party services for full functionality. • mainly our requirements our own infrastructure Self-Hosted with Custom Instance public rebranded messaging app. • Only people who have previously studied and worked on production-style Signal server architecture and structure should communicate • Those who have not previously studied and worked on production-style Signal server architecture and structure should not submit bid proposals. • The official source code is open-source and available on GitHub. • You only need to deploy and configure the Signal server only. The process requires significant technical expertise in server management, Java, database administrat...

    $110 Average bid
    $110 Avg Bid
    73 bids

    I need a fully white-label Android remote-support APK that carries my own app name, icon, and color scheme right out of the box. Core functionality must include real-time screen sharing, two-way file transfer, full screen control, and unattended access so I can assist users even when they are not actively in the app. Chat is not required at this stage. Only Android needs to be supported, so feel free to focus on the best-practice libraries and services available for that platform (e.g., Android Accessibility Service, ADB, WebRTC or similar for streaming, secure sockets for file movement). Custom branding is essential: package name, splash screen, logo, and any visible text should be replaceable through a simple configuration or build flag so future rebrands are quick. Deliverables &bu...

    $260 Average bid
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    9 bids

    The goal is to build a lightweight Android utility focused on task management. Core capability centres on notifications and reminders—covering everyday to-dos as well as specialised payment nudges and simple order-processing follow-ups—delivered reliably on Android 8.0+ devices. Scope of work • Create the full Android application in Kotlin (Java is acceptable if strongly preferred) with Android Studio. • Design clean Material-compliant screens for adding, editing and browsing tasks. • Persist data locally with Room; structure the code so a future cloud sync (e.g. Firebase) can slot in without major refactoring. • Implement a reminder engine that schedules push notifications, survives device reboots and handles recurring events such as monthly paymen...

    $96 Average bid
    $96 Avg Bid
    19 bids

    I need a robust, production-ready AI agent that can take over our entire invoicing workflow—from data capture to sending, tracking, and reconciling payments—while remaining extensible enough to plug into future inventory and customer-service automations. Scope • The agent must ingest order data from our current system (REST/JSON API), generate compliant invoices, dispatch them by email or chat, follow up automatically, and post results back to our accounting platform. • Decision-making should be handled by an LLM-powered controller (GPT-4, Claude, or similar) with deterministic guards for amounts, dates, and tax rules. • I expect tight integration through Python micro-services, webhooks, or RPA tools such as Zapier, Make, or n8n—whatever achieves r...

    $592 Average bid
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    35 bids

    I’m ready to have a brand-new feature built from scratch for my mobile application, and the entire codebase needs to be written in pure Java. Performance, clean architecture, and clear inline documentation are non-negotiable because this module will slot straight into an existing codebase that already follows solid, maintainable practices. Here’s what I need from you: • A concise outline of your technical approach—how you’ll structure the code, the patterns or libraries you prefer, and the way you’ll keep the footprint lightweight on a mobile device. • A short overview of your relevant Java mobile experience, especially any instances where you created a feature end-to-end rather than extending existing code. • Your best estimate of the cale...

    $110 Average bid
    $110 Avg Bid
    18 bids

    I have an Android application whose code is fully obfuscated and packed—only the encrypted APK is available. As soon as the app starts it shows a user-prompt dialog that I need removed. Everything else in the application must stay exactly as it is; functionality, resources, signatures, and performance cannot be affected. Your job is to: • Decrypt or unpack the existing APK (the only file I can supply). • Locate the routine that raises the launch-time user prompt and strip it out cleanly. • Rebuild, align, and sign the APK so it installs normally and behaves identically to the original—just without that dialog. Feel free to use apktool, JADX, smali/baksmali, Bytecode Viewer, or any toolset you trust, so long as the final binary passes installation and runs ...

    $7 Average bid
    $7 Avg Bid
    3 bids

    I'm seeking an experienced Roblox developer to create an action game with both PvE and PvP elements.

    $155 Average bid
    $155 Avg Bid
    16 bids

    I’m planning to launch a new blockchain-based product and I need an experienced developer who can guide me from concept to main-net deployment. At this stage I’m flexible about the exact stack—Ethereum, Binance Smart Chain, Solana or another network—so I value someone who can weigh the trade-offs and recommend the best fit for scalability, fees, security, and time-to-market. The broad vision includes designing the core smart contracts, creating a native token, integrating a secure wallet flow, and building out any web or mobile front-end required for users to interact with the chain. I also want clear documentation and the test coverage needed for a smooth audit. Deliverables I’d like to see: • Technical roadmap outlining the chosen architecture, toolin...

    $597 Average bid
    $597 Avg Bid
    98 bids

    I’m a Python developer who delivers end-to-end IT and Software Services for small to medium-sized businesses. My core offerings include custom software development, scalable cloud services, GenAI integrations, web applications and bespoke automation tools. I’m looking for a business-development professional who can consistently bring in new clients on a pure commission basis. You already have—or can quickly build—a network of decision-makers in the SMB space and know how to translate their pain points into signed projects. How the partnership will work • You source and qualify prospects that fit our service profile. • I join during technical discussions, craft proposals and deliver the work. • Commission is paid on every closed deal; percent...

    $10 Average bid
    $10 Avg Bid
    4 bids

    A responsive frontend web application built for a photography business to showcase services, portfolios, and client information. The platform focuses on clean UI design, smooth navigation, and optimized performance. It is deployed on cloud infrastructure and structured for scalability and future backend integration. Link:

    $52 Average bid
    $52 Avg Bid
    10 bids

    I need a mobile app that utilizes Excel for basic arithmetic calculations on number inputs. The app should be user-friendly and efficient. Key Requirements: - Perform basic arithmetic operations (add, subtract, multiply, divide) - Input data primarily as numbers - Mobile compatibility is essential Ideal Skills and Experience: - Proficiency in Excel and mobile app development - Experience in creating calculation tools on mobile platforms - Strong UI/UX design skills for mobile applications Looking for a freelancer who can deliver a simple, effective solution within budget.

    $29 Average bid
    $29 Avg Bid
    17 bids

    I need an Android app to control and automate an industrial unit via CAN bus using the CANopen protocol. Key Features: - Real-time monitoring and alerts - Remote control of equipment - Automated scheduling and tasks Ideal Skills and Experience: - Proficiency in Android app development - Experience with CAN bus and CANopen protocol - Strong background in control and automation systems - Ability to implement real-time data processing and alerts Looking for a developer who can deliver a robust, user-friendly app.

    $237 Average bid
    $237 Avg Bid
    22 bids

    I want to bring a dedicated Android e-commerce application from concept to Google Play. The core of the build is straightforward: customers must be able to browse products, add items to a cart, and check out smoothly—but the standout requirement is a robust push-notification system that keeps shoppers updated on promotions, order status, and cart reminders in real time. My priority stack is Kotlin with Android Studio, though I am open to proven cross-compatible libraries where it makes sense. Payment processing, user profiles, and basic analytics are already budgeted for the next phase, so please set up the project architecture with future modules in mind. Deliverables: • Production-ready APK plus signed AAB for store release • Complete, well-commented source code in a ...

    $210 Average bid
    $210 Avg Bid
    36 bids

    A Generative AI Expert designs, develops, and deploys AI systems that can generate content such as text, images, code, audio, and video using advanced models like LLMs (Large Language Models) and diffusion models. They work with technologies such as OpenAI APIs, Google AI, Microsoft Azure AI, and open-source frameworks like Hugging Face. Key Responsibilities Develop AI-powered applications using LLMs (GPT, Claude, Gemini etc.) Fine-tune models using domain-specific data Build prompt engineering strategies Implement RAG (Retrieval-Augmented Generation) Deploy AI models using cloud platforms (AWS, Azure, GCP) Optimize AI performance, latency, and cost Ensure AI ethics, bias mitigation, and data privacy compliance Integrate AI with web/mobile applications via APIs Required Skills Technica...

    $284 Average bid
    $284 Avg Bid
    30 bids

    I’m ready to launch an e-commerce experience on Android and need a complete application built from the ground up. The core idea is simple: shoppers must be able to browse a catalog, add items to a cart, pay securely, and track their orders—all within a clean, responsive interface that feels fully native to Android. You’ll focus on coding and UX while I supply the product data, brand colors, and any graphics you need. Material Design principles are a must so the layout adapts gracefully across phones and tablets. Please integrate a widely-used Indonesian-friendly payment gateway such as Midtrans (or propose an alternative) and set up push notifications for order status updates. Deliverables • Production-ready APK plus full source (Kotlin or Java, latest Android SD...

    $35 / hr Average bid
    $35 / hr Avg Bid
    66 bids

    I’m ready to launch an e-commerce experience on Android and need a complete application built from the ground up. The core idea is simple: shoppers must be able to browse a catalog, add items to a cart, pay securely, and track their orders—all within a clean, responsive interface that feels fully native to Android. You’ll focus on coding and UX while I supply the product data, brand colors, and any graphics you need. Material Design principles are a must so the layout adapts gracefully across phones and tablets. Please integrate a widely-used Indonesian-friendly payment gateway such as Midtrans (or propose an alternative) and set up push notifications for order status updates. Deliverables • Production-ready APK plus full source (Kotlin or Java, latest Android SD...

    $34 / hr Average bid
    $34 / hr Avg Bid
    59 bids

    I’m ready to launch an e-commerce experience on Android and need a complete application built from the ground up. The core idea is simple: shoppers must be able to browse a catalog, add items to a cart, pay securely, and track their orders—all within a clean, responsive interface that feels fully native to Android. You’ll focus on coding and UX while I supply the product data, brand colors, and any graphics you need. Material Design principles are a must so the layout adapts gracefully across phones and tablets. Please integrate a widely-used Indonesian-friendly payment gateway such as Midtrans (or propose an alternative) and set up push notifications for order status updates. Deliverables • Production-ready APK plus full source (Kotlin or Java, latest Android SD...

    $35 / hr Average bid
    $35 / hr Avg Bid
    65 bids

    About the Project (Only Mumbai-based Freelancer, no Agency ) We are building an end-to-end Purchase Order (PO) to Invoice Automation System. Customer POs are received via email in PDF format and currently processed manually into Excel and ERP. We are implementing two synchronized Robotic Process Automation (RPA) bots to: Extract data from POs Validate and structure data Enter data into ERP Generate invoices Email invoices to customers Maintain audit logs The system must operate 24/7 with minimal human intervention. Role Overview We are seeking an experienced RPA Developer to design, develop, test, and deploy automation bots that streamline the order processing lifecycle. The ideal candidate has hands-on experience in PDF data extraction, ERP automation, exception handling, and produ...

    $86 Average bid
    $86 Avg Bid
    14 bids
    Oracle AI Agent Studio
    4 days left
    Verified

    If you are expert in building Oracle AI agents and if you have the fusion experience then only bid this project. payment will be released only if the project satisfied or else no payment. it needs to be remote work you just need to guide me i will do in my system. I have a Fusion Application instance and want to layer Oracle AI Agent Studio on top of it so that key customer-facing actions happen automatically. The flow is straightforward: • The agent picks up promise dates and status changes from Fusion. • It updates the relevant “Notes” field in real time. • If a promise is missed, the agent triggers an email to the customer (and a copy to our team). Few of theAPI keys are already available; I simply need you to wire them into Oracle AI Agent Studio, c...

    $78 Average bid
    $78 Avg Bid
    9 bids

    So, here is my project details again described here, study and give me better code please: I have excel file showing live data of market, I watch this excel file from abroad through screenleap, I want to build a live watch up software by python or java and web application or any other coding to watch this live data and store them in my pc in a data base allowing me to watch the history of a few days back, here are the page names in excel file eurusd , eurjpy , eurchf , eurgbp , eurcad , eurcny , oil , eursgd , eurhkd , euraud , usdchf , usdjpy , usdcad , usdsgd , usdhkd, usdcny , 5yb , gbpusd , gbpcad , gbpjpy , gbpchf , gbpcny , gbpsgd , gbphkd , gbpaud , chfcny , chfjpy , nzdusd , nzdjpy , audusd , audcad , audnzd , audjpy , cadjpy , xauusd , BTC , ETH , CORN , audchf , ...

    $200 Average bid
    $200 Avg Bid
    72 bids

    I’m ready to turn my concept into a fully-featured Android application and need an experienced developer to guide it from blank screen to Google Play. The goal is a clean, stable build that follows current Android guidelines, runs smoothly across modern devices, and ships with readable, well-commented code. You’ll help me refine the feature set, choose the right architecture, and handle every stage of the workflow—UI implementation, backend integration if required, testing, and final store submission. Once we agree on milestones, I’ll supply any additional assets or wireframes and stay available for quick feedback so the process keeps moving. Deliverables: • Production-ready Android APK and signed App Bundle • Complete, maintainable source code (Git) ...

    $10 / hr Average bid
    $10 / hr Avg Bid
    30 bids

    We need an engineer experienced with MZ Automation openIEC61850 to build a complete IEC 61850 Edition 2.1–compliant SCL package for our Smart Grid controller (Linux-based OEM device acting as an IEC 61850 Server via LAN). Deliverables SCL files: ICD / CID / SSD / SCD (as applicable) Conformance paperwork: PICS / PIXIT / TICS / MICS Automation (preferred): scripts/tools to generate plant-specific SCL from our plant configuration file for future installations Key Requirements All Logical Nodes / DOs are defined in our internal spec — implement exactly what’s listed (no guessing) Logical Node naming must comply with CEI 0-16 (Annex T) Data transmission: some values every 4s, some on change, some on request, plus controls/setpoints from client We want an optimized dataset/r...

    $250 - $750
    Sealed
    $250 - $750
    13 bids

    I’m extending my Bedwars1058 server into a truly competitive arena and need a ranked system coded right away. The core requirements are already mapped out—placement matches, ongoing MMR updates, a /rank lookup, and full data persistence—but the make-or-break piece is fair, dynamic matchmaking. Players must be grouped with opponents of similar rating, with the queue smart enough to widen its tolerance only when wait times get excessive. Everything has to slip neatly into the existing Bedwars1058 ecosystem; no changes to the core game, no clunky commands. Java, Spigot/Paper APIs, and solid MySQL (or equivalent) handling will all be in play. The finished module should: • Track first-ten placement games, establish an initial MMR, then adjust after every win, loss, kill...

    $26 Average bid
    $26 Avg Bid
    21 bids
    Love now love
    4 days left

    App Name: Love Now App Type: Android (APK) – Interactive Couple Games Description: Love Now is an interactive app designed for couples and partners to enhance intimacy, emotional connection, and fun together. The app works on a single device, allowing both partners to play and interact directly on the same phone. App Goals: Improve communication between partners Create a playful and engaging atmosphere Provide daily games and challenges Track relationship progress with a fun “Relationship Level” Main Features: Account Setup User information: name, age, gender Partner information: name, age, gender, preferences Relationship status and duration Games Section Includes interactive games: Word Game: Each partner has a list of words; the app uses a built-in algorithm to match c...

    $221 Average bid
    $221 Avg Bid
    42 bids

    I need a secure, lightweight VPN application built for both and Android. The interface can stay minimal; stability, speed, and protocol flexibility are the real priorities. Core capabilities I expect: • Kill switch that reliably blocks traffic if the tunnel drops • Split tunneling so the user can choose which apps bypass the VPN • Support for the following protocols or transport layers: ssh, ssl, udp, v2ray, and websocket • A menu of multiple server locations that I can expand later through simple JSON or similar remote config No in-app user-authentication flow is required; the build should assume pre-provisioned profiles or embedded credentials. Deliverables: 1. Clean, well-commented source code (/Kotlin or Java/) 2. Signed release builds ready for TestFli...

    $253 Average bid
    $253 Avg Bid
    47 bids

    I am building a utility-style Android application and need an experienced Kotlin developer to take it from concept to a stable, Play-ready release. The core of the job involves: • Designing clean, maintainable Kotlin code that follows Android best practices (MVVM, Jetpack components, coroutines). • Implementing a small feature set typical of tools apps—think background services, permission handling, and a concise, responsive UI built with XML or Jetpack Compose. • Integrating basic analytics and in-app settings so the user can customise the experience. • Connecting the app to a lightweight local data store (Room or DataStore) for persistence. • Packaging, signing, and preparing a release build that passes Google Play requirements. I will provide...

    $149 Average bid
    $149 Avg Bid
    21 bids
    Fix Java Excel Handling
    4 days left
    Verified

    My Java-based desktop application currently throws errors whenever a user tries to import an Excel file, and the files it exports need a small formatting tweak before they are usable. The rest of the program works well, so I’m looking for someone who can go straight to the file-handling layer, diagnose the functional bugs, and leave the UI and business logic untouched. Here’s what I need from you: • Identify and resolve the exception that appears during Excel import (the stack trace will be provided). • Adjust the export file so that matches the format required (change date in american format to eu format). • Keep the fixes confined to the existing codebase—no major rewrites—while following the project’s current build process (Maven, Java...

    $155 Average bid
    $155 Avg Bid
    147 bids

    I'm setting up a Minecraft server and need help modifying plugins to implement a player-to-player trading economy. Key Requirements: - Modify existing plugins or create new ones - Set up a secure and balanced player-to-player trading system Ideal Skills: - Experience with Minecraft server management - Proficient in plugin development and modification - Strong understanding of Minecraft economy systems Looking for someone who can bring my vision to life, ensuring a smooth and engaging trading experience for players.

    $127 Average bid
    $127 Avg Bid
    73 bids

    I want a lean, dependable Android app that helps me log day-to-day sales without any bells and whistles. The flow is fixed at four material-designed screens: 1. Company creation 2. Product creation 3. Sales / POS entry 4. Report & Export Everything may live in a local SQLite (or similarly lightweight) database so figures stay put between sessions. Jetpack libraries are welcome if they speed things up. Deliverables I expect • Complete Android Studio project with tidy, well-commented code • Signed APK that installs on Android 9+ • Short README describing how to build, where the data sits, and how to trigger the CSV/email export If the compiled APK mirrors the four-step flow above, stores data reliably, and can push out a CSV or email attachment of all rec...

    $140 Average bid
    $140 Avg Bid
    64 bids

    PROJECT OMEGA – FULL MOUNTAIN BLACKSITE Java Edition – $50 Flat (No Milestones) Budget $50 flat payment upon delivery. No milestone system. Version Minecraft Java Edition (mod-compatible). Full Scope Requirements I am requesting a fully hidden, mountain-integrated megabase including: Mountain Integration Entire base built inside a large mountain No obvious exterior modifications Hidden piston entrance Natural camouflage Large hollowed interior core Retractable Runway Large runway extending from mountain face Fully retractable and flush when closed Toggleable runway lighting Redstone controlled Connected hangar bay Rising Vehicle Platforms 8+ underground vehicle bays Each with piston elevator platform Vehicles rise to surface level Flush floor when closed Individual control p...

    $20 Average bid
    $20 Avg Bid
    11 bids

    When my Android app is minimized, any YouTube video inside the WebView pauses immediately. I need a clean, reliable way to keep playback running in the background the same way the regular Here’s the current state of things: • I’m loading the video inside an Android WebView. • I have already experimented with various WebView settings—JavaScript, media playback flags, setMediaPlaybackRequiresUserGesture =false, etc.—but nothing has stopped the pause on “home” or “recent-apps” actions. • No alternative implementations (custom players, exo-player wrappers, or different WebView engines) are in place, What I need from you: 1. A working code solution (Java or Kotlin) that lets the video continue playing when the user switch...

    $83 Average bid
    $83 Avg Bid
    16 bids

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