Payment gateway app android jobs

...developer accounts on Google and Apple to publish e-commerce applications. The project involves the following: - **Operating Systems:** The app should be compatible with both iOS and Android. - **Primary Purpose:** The main objective of the application is e-commerce. It will be used for online buying and selling. - **Payment Gateway Integration:** The app will be integrated with the Stripe payment gateway. The ideal freelancer for this project should have: - Experience in setting up developer accounts on both Google and Apple platforms. - Proficiency in developing e-commerce applications for both iOS and Android. - A good grasp of integrating payment gateways, particularly Stripe. I'm aiming for a professional with ...

...before and after photos of these treatments. - Booking System: The website should have a user-friendly booking system that allows clients to schedule appointments online for their desired aesthetics services. - Deposit Payments: The website should integrate a secure payment gateway that allows clients to make deposits via both credit card and PayPal. Ideal Skills: - Web Development: Proficient in building responsive, user-friendly websites with booking systems. - Payment Gateway Integration: Experience in integrating secure payment gateways for online transactions. - Aesthetics Industry Knowledge: Understanding of the aesthetics industry and its specific needs for showcasing services and treatments. - Design & Marketing: Ability to create an engag...

I'm seeking an experienced game developer with a deep understanding of Cocos2d, Unity to join our team to create an engaging Android game with some special features. Key Requirements: - Proficiency in Cocos2d game development - Experience with Android game development - Ability to implement multiplayer mode and level editor functionalities - Knowledge of IO Game - Experience of multiplayer IO Game

I'm looking for a proficient Java developer to assist with mobile application development for Android. While the specific features of the app haven't been finalized yet, a deep understanding of the Android ecosystem is crucial. Your tasks in this project will majorly focus on: - Constructing the back-end structure - Building app functionality - Ensuring smooth user interface flows Ideal candidate should have: - A strong background in Java - Experience with Android app development - An understanding of user-centric design - Flexibility to adapt their approach as the project moves forward. This project is excellent for a developer keen to expand their portfolio with a robust Android application. Please attach examples of yo...

Looking for an expert game developer to create an engaging Android-based Ludo game with the following features: Essential Features: - Online Multiplayer: The game should allow players to compete online against others. - In-game Chat: Players need to have the ability to communicate while playing. - Leaderboard: A system to rank players based on their performance should be integrated. - 2 and 4 Multiple Players: Ability for two or four players to play simultaneously is a must. Game Modes: - Need to incorporate three different playing modes - Classic, Quick, and Challenge Mode. Ideal candidates should have: - Extensive experience in Android game development. - Knowledge of integrating online multiplayer and chat functionality. - Ability to incorporate leaderboards. - Cr...

I'm seeking a talented developer to create a specialized GPS plugin for Android utilizing Ionic Cordova platform. The plugin should have the following functionalities: 1. Geo-fencing: It should be capable of defining geographical boundaries. 2. Notification System: It must notify users when they enter or leave a predefined area. 3. Location History: The ability to chart and recall past locations is also necessary. Key Skills: - Ionic Cordova - Android development - GPS tracking - Geo-fencing Candidates should have proven experience with the above-listed skills, especially in the context of creating GPS plugins. Demonstrable knowledge of Android development using Ionic Cordova platform is a must. Previous experience in developing geo-fencing and location h...

I am seeking an experienced IPTV app developer to rebrand an application similar to smarters pro. It's crucial for the rebranded app to support Android platform. the app must be working by activation codes instead of username and password with panel management dns if possible

...any new features requested by the Client. Design Changes: Implement any design changes requested by the Client. Magento 2 Upgrades: Perform upgrades to the latest versions of Magento 2. ERP Sync Module: Develop a custom ERP synchronization module. As an alternative to expedite the process, utilize a pre-built module until the custom one is complete. Payment Gateway Integration: Set up Areeba Payment Gateway and potentially integrate other payment gateways. Data Entry: Assist with data entry for product images and specifications. Website Maintenance: Perform ongoing maintenance and upgrades to the website. New Feature Development: Develop new features as requested by the Client. Website Security: Implement measures to ensure website security. Website Sp...

...platform specifically tailored for agricultural commodities. The platform needs to cater to a broad audience, including individual traders, institutional investors, commodity brokers, regulators, commodity producers, and market analysts. Key Features: - Real-time Market Data: Accurate and up-to-the-minute data on market trends, prices, and other relevant information. - Secure Payment Gateway: A reliable and secure payment system to facilitate trade transactions. - User Profiles and Dashboards: Customizable user profiles and intuitive dashboards for a smooth user experience. - Mobile Accessibility: The platform must be accessible and user-friendly on both mobile and desktop devices. - Security and Data Privacy: Robust security measures to ensure data safety ...

...any new features requested by the Client. Design Changes: Implement any design changes requested by the Client. Magento 2 Upgrades: Perform upgrades to the latest versions of Magento 2. ERP Sync Module: Develop a custom ERP synchronization module. As an alternative to expedite the process, utilize a pre-built module until the custom one is complete. Payment Gateway Integration: Set up Areeba Payment Gateway and potentially integrate other payment gateways. Data Entry: Assist with data entry for product images and specifications. Website Maintenance: Perform ongoing maintenance and upgrades to the website. New Feature Development: Develop new features as requested by the Client. Website Security: Implement measures to ensure website security. Website Sp...

I am seeking an experienced Flutter developer to build an e-commerce app compatible with both iOS and Android. I already have a designed blueprint ready and will provide all assets and wireframes needed to expedite the process. Key Responsibilities: - Convert my design to a fully functional app - Ensure smooth and efficient operation on both platforms - Include all essential features for an e-commerce platform, including but not limited to, product listing, shopping cart, payment gateway, and user accounts. Ideal Candidate: - Must have significant experience in developing cross-platform apps using Flutter - Prior experience in e-commerce app development is preferable. - Must have good understanding of how to integrate third-party services an...

...create a script to automatically execute the OpenVPN app on my Android TV device, prior to my primary application (Xibo) starting. The requirements are as follows: - The device in question is a physical HK1 RBOX H8 BigdroidOS 2.0.1 - The operating system used is Android TV 12 - The script must start the OpenVPN app and automatically connect to a designated VPN network - The script have to be executed before the start of the main app Xibo - Strong familiarity with Android TV and SDKs will be beneficial in this task I've tried some apps solution like Macrodroid or Tasker but I had no success. Ideal skills for this role include linux programming, app scripting, and a strong understanding of VPNs. Previous experience dealing with A...

As a thriving startup, we are in need of a highly skilled Android Developer with proficiency in XML and Jetpack Compose to join our team. Primary Task: - Migrate a module written in XML to Jetpack compose : 4 screens + Business logic Skills and Experience needed: - Deep understanding and expertise in Android app development - Hands-on experience with XML Schemas; familiarity with XML Parsing and XML Web Services will be considered a plus - In-depth knowledge of Jetpack Compose, especially its UI toolkit Overall, we're seeking a developer who is deeply committed to enhancing the user experience through thoughtful and efficient app development. If you've mastered XML and Jetpack Compose and have a knack for Android development, this projec...

Seeking a creative Android developer to build a unique app perfectly suited for the teenage demographic. This app will require: - Registration and login using FIDO2 authentication protocol - A well-structured node.js backend integration - Custom message push notifications for active user engagement - Local database integration for efficient data management The app should contain a seamless payment feature, promoting accessibility and ease of use. No need for messaging/chat feature, gamification elements or social media integration. Preferred Skills and Experience: - Proven experience in Android development - Profound knowledge of FIDO2 Authentication - Familiarity with Node.js backend development - Proficient in local database integration - Ex...

check attached pic UPDATE : I DO NOT NEED AN APP !!! I NEED A SOFTWARE THAT GENERATE APPS !!! i need a software for windows that can generate an app on the fly it should make an app on the fly with these 3 settings only : app icon app title app WebView address (the website it should open in WebView on loading ) at the end the general idea is to make a soft that can make an the app that will simply open the website in a WebView . YOUR BID MUST START WITH THE WORDS "IM NOT A BOT" - OR ELSE I JUST DELETE BID

Logo + Admin Panel + Multi DNS I'm in need of an expert in APK rebranding specifically for Tivimate IPTV. The chosen freelancer should have experience and proven capability in android platform development and APK rebranding. They should be able to; - Efficiently handle the task of rebranding our Tivimate IPTV APK into IBO player with a new logo. - Build a comprehensive Admin Panel integrating functions of User and Content management efficiently. Since the rebranded APK should be compatible with Android, a substantial level of expertise and experience with this platform is crucial. A successful application will demonstrate sufficient experience in similar projects.

check attached pic UPDATE : I DO NOT NEED AN APP !!! I NEED A SOFTWARE THAT GENERATE APPS !!! i need a software for windows that can generate an app on the fly it should make an app on the fly with these 3 settings only : app icon app title app WebView address (the website it should open in WebView on loading ) at the end the general idea is to make a soft that can make an the app that will simply open the website in a WebView . YOUR BID MUST START WITH THE WORDS "IM NOT A BOT" - OR ELSE I JUST DELETE BID

...and experienced Android developer to join us on a part-time basis as a consultant and team lead. In this role, you will be responsible for leading a team of 10-15 developers, providing guidance and support, and ensuring the successful delivery of our Android app project. *Responsibilities:* - Lead a team of 10-15 Android developers, providing technical guidance and support - Review code, provide feedback, and ensure coding standards are met - Collaborate with cross-functional teams to define, design, and ship new features - Work closely with project managers to prioritize tasks and meet deadlines - Troubleshoot and debug issues to ensure smooth app performance - Stay up-to-date with new technology trends and best practices *Requirements:* - Proven ex...

As a client, I'm interested in a proficient developer with experience in Android app development using Kotlin and familiarity with implementing passwordless login and FIDO2 authentication. I want a state-of-the-art Android app designed and built that uses FIDO2 registration and authentication against a Node.js backend with a MongoDB server. The successful freelancer should ideally possess the following skills and experience: - Profound understanding of Kotlin and Android app development - Previous experience with FIDO2 registration - Good grip on Node.js backend and MongoDB server - Familiar with implementing passwordless login Features to be included: - FIDO2 registration and passwordless login - Fingerprint recognition and Facial recogni...

I'm in need of a seasoned full stack developer who can handle web and app development, along with setting up a server for an e-commerce platform. I need the following features implemented: - **User Authentication**: A secure and robust user authentication system is a must. - **Payment Gateway Integration**: Seamless integration with popular payment gateways for a smooth shopping experience. - **Social Media Integration**: To enhance the user experience through social media connectivity. The main goal of this project is to set up a user-friendly and efficient e-commerce platform, so the ideal candidate should have a strong portfolio in e-commerce web and app development, along with the necessary server setup expertise.

Seeking a skilled developer capable of quickly creating a robust asp.net-based e-commerce web application. The application demands the following features: - Product listing - Shopping cart - Payment gateway - Admin access to data Data should be stored in MS Access 2007. As the design is not yet finalized, possessing a keen eye for detail and themes that resonate with users will be highly valued. This project is time-sensitive and must be completed within 1 day. Proficiency in Visual Basics and experience in speedy application development is sought after.

I am in need of a skilled Wordpress developer who can add a payment page to my website, among other features. Ideal Skills: - Proficiency in Wordpress - Experience with payment gateway integration - Understanding of e-commerce functionalities - Preference for individuals who can provide detailed project proposals Please include in your application a comprehensive proposal that maps out how you intend to tackle this task based on your previous experience. Your proposal will be a key determining factor in my decision-making process. I appreciate the time you take to apply for this interesting project. Thank you.

...beautiful and user-friendly website for our AEC business. Key Responsibilities: Collaborate with us to understand our brand vision and website goals. Design and develop a website using Webflow that is visually appealing, user-friendly, and responsive across all devices. Utilize Webflow's functionalities to build interactive elements and animations Integrate seamlessly with other gateway Ensure website is optimized for search engines (SEO best practices). Maintain clear communication throughout the project and deliver high-quality work on time. Requirements: Proven experience building websites with Webflow (portfolio required). Strong understanding of design principles (typography, color theory, layout). Familiarity with responsive desi...

I am looking to create a classifieds listing site, specifically geared towards University R&D opportunities. This Wordpress site will facilitate...geared towards University R&D opportunities. This Wordpress site will facilitate key features: - User Registration and Login: Ideal for maintaining a database of interested parties - Search and Filter Options: This will make it easy to navigate through different research areas - Payment Integration: As a premium option for featured listings. The site should cover all sectors from Biotechnology to Artificial Intelligence, Renewable Energy and beyond. Proficiency in Wordpress, database management, and Payment gateway integration is required. Experience in building classifieds sites is a bonus. Individual approach ...

I'm looking to hire a skilled mobile app developer to create an Android application similar to 'Finnov Partner' on the Play Store. Key features of the App should include: - User registration/login feature - Account balance tracking - Transaction history In terms of aesthetic, I'm looking for a minimalist approach to design. It is essential that the look and feel of the app is clean, easy to navigate and intuitive to use. The ideal candidate for this project should have experience in creating similar fin-tech or banking apps and should have a good understanding of user database management. Proficiency in Java or Kotlin for Android development is a must. Please inbox me with your relevant apps/projects and how you can contribute to ...

...selling meat. The site should be user-friendly, secure with all necessary features for an E-commerce platform. Key Features: - Product Catalog: The website will need to display a range of meat products with detailed descriptions and pricing. - Shopping Cart: An intuitive shopping cart function that allows users to add and remove items, as well as calculate their total cost. - Payment Gateway: A secure payment gateway to facilitate smooth transactions. - Delivery Schedule (Slots): I'll need customers to be able to choose from available delivery slots for their orders. Ideally, I'd like the website to be built with scalability in mind, in case we wish to expand the product range or services in the future. Prior experience with similar E-commerce pr...

...integrate a SMS gateway for 2-factor authentication. The key features I need are focused on providing transactional notifications, and the connected APIs should be able to provide multiple API integrations. The project mainly requires the following: - Integration of a customizable SMS gateway: I need a developer who can implement a SMS gateway that supports transactional notifications, as well as multiple API integrations. - Customization of transactional notifications: I need pre-defined templates for these notifications, which should be able to include dynamic fields. Ideal skills for this job would include: - Proficiency in API integration: Given that I need multiple API integrations, a developer with a strong background in this area would be highly valued. - E...

I'm seeking a highly skilled app developer who can meticulously create an Android-based Telegraph wallet with key features and security measures. Features: - It should be capable of initiating fund transfers and receiving them, functioning seamlessly. Security: - To ensure superior protection against potentially harmful breaches, it must incorporate a reliable two-factor authentication and biometric authentication. To succeed in this project, you need prior experience in Android app development, specifically with financial apps, and an understand of encryption systems for enhanced app security. Proven expertise in integrating two-factor and biometric authentication is expected. Let's take Telegraph wallet's functionality and security t...

...ARE WILLING TO TAKE ON THE PROJECT FOR. WE ARE NOT IN A HURRY AND WE WILL NOT CONSIDER CANDIDATES WHO DO NOT TAKE THE TIME TO ANSWER THE REQUIREMENTS PART OF THE DESCRIPTION. WE ARE FAIR AND WE WILL NOT NEGOTIATE THE PRICE OF YOUR BID. PLEASE DO NOT WASTE OUR TIME. WE WILL BE MORE THAN GENEROUS ONCE YOU DELIVER WHAT WE ARE ASKING FOR AND WHAT YOU ARE PROMISING. WE ARE ALSO WILLING TO DIVIDE THE PAYMENT IN MILESTONES. WE WANT SOMEONE WHO UNDERSTANDS THE PROJECT AND IS WILLING TO STAY ON BOARD WHEN COMPLETED GTO TAKE CARE OF THEIR CREATION. WE WOULD LIKE TO TAKE THE TIME TO FIND THE RIGHT CANDIDATE WHO IS PATIENT AND CAN UNDERSTAND OUR VISION. THANKS AND GOOD LUCK******* *******Project Description: Seeking a Skilled Developer for an Interactive Credit Repair Website AND COMPLETE A...

(Please read- stop automated b...proficient developer with expertise in both WordPress & Laravel platforms. Your primary tasks will include: - Simultaneous development on both platforms - Integration of payment gateway API using Laravel -5y + experience in WP Your ideal skills and experience would consist of: - In-depth knowledge of WordPress & Laravel. - Strong experience in integrating APIs, particularly payment gateways. - Excellent problem-solving skills to effectively manage any integration issues that may arise. - Familiarity with user interface design is a plus, but not a prerequisite. In summary, I need a developer who is adept at integrating payment gateway APIs, while simultaneously understanding and utilising the strengths of both W...

I am looking for a seasoned Android Developer with a knack for designing high-performing, scalable, enterprise-grade applications. Although it is not clear at this time what specific functionalities will need to be integrated into the app (e.g.,social media integration, push notifications, in-app purchases), we will determine these as the project unfolds. Ideal Skills and Experience: - Demonstrable skills with a strong portfolio - Ability to interpret and follow technical plans - Proficiency in programming languages for Android Job Requirements: - Development of high-end performance and reliable consumer applications. - Creating App Wireframes, UI/UX Design ensuring that is modern & user friendly. - Design, build and maintain efficient, reusable and...

I'm looking for a proficient individual with an established user base to test my productivity app on Android. Your role will be to download the app, have your 20 ready users test its performance and usability, and then leave a review on the app store. Key Responsibilities: - Immediate availability of 20 users for testing - Performance testing of the productivity app - Writing a good review on the app store Your feedback should focus mainly on the app's performance, functionality, and overall usability. I need 20 users to test it before its public release as per android. the review should be good for the company.

Looking for an experienced Android developer with experience in publishing apps on play store

I require an accomplished Shopify web developer to establish a professional and corporate-styled e-commerce site specifically targeting large businesses. The website must possess intuitive e-commerce capabilities for a seamless user experience. Key requirements: - Integrated e-commerce capabilities - Addition of product variations and options - Reliable payment gateway integration - Ability to create custom web pages if needed Candidates conversant with Shopify Plus and a proven track record of similar e-commerce projects would be ideal. Familiarity with the needs of small/large businesses, superior coding proficiency, impeccable design skills, and a solid understanding of corporate aesthetics is highly valuable for this project.

...support real-time auctions. This means that users can bid on cards and see the changing prices as they unfold. - **Secure Payment Processing:** Ensuring that transactions are secure is a top priority. The website should have a robust payment processing system to facilitate safe and reliable transactions. Ideal Skills and Experience: - **Full Stack Development:** Competence in both front-end and back-end development is necessary for this project. - **E-commerce Development:** Experience in developing e-commerce websites, especially those that include auction functionality is a great advantage. - **Payment Gateway Integration:** Knowledge in integrating secure payment gateways is crucial. - **User Account Management:** Proficiency in creating and manag...

For my Shopify site, I need a professional to bring it to c...clean and professional design. Your ability to create user-friendly interfaces will be critical here. 2. Payment Gateway Integration: While there were no specific features highlighted for this, your experience in creating secure, efficient, and user-friendly payment gateways will be critical. 3. Product Page and Checkout Page: Your role will be to conclude the current design and ensure that the layout is seamless, attractive, and easy to navigate. I'm looking for someone with a solid background in Shopify and E-commerce websites, with excellent CSS and HTML skills. Experience in creating professional and clean designs is essential, with a portfolio to prove it. Proficiency in payment gateway...

I'm in need of a skilled developer to create payment plugins for my own payment gateway GabbiPay (documentation: ) compatible with Woocommerce, Magento, and OpenCart. The plugins should have advanced functionality and ensure secure payment processing.

I am building an Android application that will serve as a farming tools shop. The app will be developed using Android Studio, and Java is preferred for the coding. Key functionalities of the app will include: - Product Catalog: The app should have a smooth and user-friendly product catalog that displays all available items in a well-organized manner. - Shopping Cart: Users should be able to add products to their cart, view their cart, and complete the purchase process. - User Registration and Login: A secured system where users can create accounts, log in, and manage their profiles. Other crucial features include: - Home Page: The home page should emphasize the 'Best Offers'. It will also need sections for 'Best Sellers' and '...

I am in need of a skilled mobile app developer who can create a cross-platform e-commerce app for me. The app is intended to sell both physical and digital goods, with a focus on user-friendly interface and secure payment gateways. Key requirements: - Development for both iOS and Android - E-commerce focus - Supporting both physical and digital goods Ideal skills and experience: - Proficiency in app development for both iOS and Android - Experience with e-commerce app development - Knowledge of payment gateway integration - Understanding and implementation of secure app practices Please share your relevant experience and portfolio. Thank you.

...integrate a SMS gateway for 2-factor authentication. The key features I need are focused on providing transactional notifications, and the connected APIs should be able to provide multiple API integrations. The project mainly requires the following: - Integration of a customizable SMS gateway: I need a developer who can implement a SMS gateway that supports transactional notifications, as well as multiple API integrations. - Customization of transactional notifications: I need pre-defined templates for these notifications, which should be able to include dynamic fields. Ideal skills for this job would include: - Proficiency in API integration: Given that I need multiple API integrations, a developer with a strong background in this area would be highly valued. - E...

I need a Flutter developer to create an bill payment app.

I am in t...Functionality: The site should allow me to offer my services in exchange for a profit. This requires a secure and seamless payment gateway integration. - User Registration and Login: Users should be able to create accounts, access the services, and track their past interactions. - SEO Optimization: The website should be optimized for search engines to ensure that my services are easily discoverable online. Ideal Skills and Experience: - Proven track record in e-commerce website development - Strong understanding of user experience and design principles - Experience with building user-friendly interfaces - Knowledge of SEO best practices - Experience in integrating payment gateways If you believe you have the expertise to bring this project to fruition, I&...

I need a skilled WordPress developer to help me set up recurring payments for my website. I've decided to use PayPal as the payment gateway and I'm looking to offer multiple subscription options with different prices, but with no free trial period. Here are the key components of this project: - Integration of PayPal as the payment gateway - Implementation of multiple subscription plans with varying prices - Ensuring that there is no free trial option The ideal candidate for this job should have: - Proven experience working with WordPress and setting up payment gateways, ideally PayPal - A strong understanding of subscription models and the ability to set up multiple subscription plans with different prices - Excellent attention to detail to en...

I need a proficient developer to construct an Android TV app. This application's primary functionality will require a standard Android menu and video playback capability. Key Project Details: - The menu should adhere to the Android default menu format. - No specific layout or design is required for the menu - keeping it simple and intuitive is our goal. - The app must be able to execute video playback smoothly.

I need some easy work in Android I need some android apps using java I need easy work at low budget but for long term I need work from Pakistan freelancer

I'm in need of a skilled mobile app developer to create an Android-based platform that emulates the features of the popular Ola ride booking application. Key Features: - The app's primary function is to allow users to book rides conveniently. - It should integrate a robust and seamless real-time location tracking system for drivers. Ideal Experience: - Proven experience in developing Android applications. - Familiarity with GPS tracking systems. - Previous work on ride-sharing or booking apps is a plus.

I'm seeking a proficient developer to design and implement a web and mobile application, delivering high-quality, user-friendly functionality. The key features will include user registration and login, as well as payment gateway integration. As for the aesthetics, a blend of minimalistic, colorful, and professional design is preferred. Essential skills and experience: - Proficiency in both web and mobile app development - Experienced in creating user registration and login systems - Knowledge in payment gateway integration - Demonstrated ability in creating visually appealing designs - Ability to create a sleek blend of minimalistic, colorful, and corporate design Please note, though external systems or API integration isn't mentioned at this ...

I'm looking for a seasoned Unity developer to create an Android application for data registration. This project is centered around the following requirements: - Platform: The end product should be compatible with Android devices. It will be deployed on this platform, so previous experience with Android deployment is highly desirable. - Experience: The ideal candidate should have a proven track record in developing applications within Unity, especially those that are more data-centric rather than game-oriented. - Concept: The focus of this project is data registration. This means the app will need to allow users to input information, store it securely, and present it in a user-friendly manner. Experience in handling and displaying data within Unity applicat...

...The ideal candidate will have expertise in both front-end and back-end development, with experience in TypeScript frameworks for server-side rendering and React.js or Vue.js for web development, as well as React Native or Flutter for mobile app development. Responsibilities: - Develop user authentication and profiling features, including sign up, basic details collection, and user categorization. - Implement job posting functionalities, allowing users to create detailed job listings with prompts and boilerplate templates. - Design and integrate payment gateways, specifically utilizing Midtrans Indonesia for secure transactions. - Develop interactive features such as chat portals, notifications, and file repositories to facilitate communication and project management....

...proficient Android Developer who is experienced in publishing apps on the Playstore and can efficiently work on open-source applications. Primary Goal: - Develop an Android application primarily aimed at generating revenue. Primary Features: - The application must provide key features like user registration and authentication. - There should be seamless integration with payment systems. - It ought to support in-app purchases. Design & Branding: - Applicants should be able to meet specific design and branding requirements, incorporating these aspects into the development of the application in a professional manner. Ideal Skills: - Proven experience as an app developer (showcasing previous work will be appreciated). - In-depth understanding and...