Nodejs solidity jobs

I am seeking a skilled developer fluent in Solidity to develop a web3 smart contract using the Base Sepolia Test Net. Your task will involve: - Developing web3 integration - Designing the simplest UI possible Ideal candidates should have previous experience with Ethereum blockchain technology, Solidity programming distinct to the Base Sepolia Test Net, and the creation of adaptable user interfaces. A background in web3 integration is highly desired. Please provide samples of smart contracts you've developed or relevant project references in your bid.

We're dividing assets into fractions. We have .sol files related to smart contracts (ERC20 on Ethereum with a bridge on Gnosis). We're in search of an expert who can review these files and determine their functionality for deployment. Should this collaboration proceed smoothly, we're open to establishing a long-term partnership for technical support.

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I am seeking an experienced API developer, proficient in one of this, Fastapi, NodeJS, or NestJS, to create an API focused on integrating colombia public data. Key Responsibilities: - Understand and integrate external public data sources. The ideal candidate will have experience in integrating APIs with public data sources. Skills and Experience: - Proficient in one ot this, Fastapi, NodeJS, or NestJS. - Experience in integrating APIs with public data sources.

I need an experienced Ember.js developer to bring my project to the next level. The project requires multiple improvements. The project needs to be updated to the latest version of nodejs. I have included in the attachments the and to get an understanding of what will need to be done. Some packages are no longer maintained and alternatives will have to be found, updated or created. The project environment is set up for Linux so good if you have that setup already on your local machine. Please don't ask what the budget as it is already listed in this posting, your bid is the budget. No payout will be made until the project is complete. Key Responsibilities: - Adding new features to the existing framework - Implementing performance enhancements - Providing updates

Looking for someone who can code TON smart contracts. We have a DeFi platform which has integrations to ETH, BNB & Blast chain already. We want to add TON as the 4th chain. We also have similar logic contracts written in Solidity for reference. As TON is non-evm compatible, the dev needs to write contracts to integrate the chain into the platform. Some resources for research :-

I'm in urgent need of an experienced designer well-versed in HTML5, CSS, React, and NodeJS to breath a new life into the design of a medical test report for my existing application. Key Points: • I'm keen to see a transformation in terms of updated font and color choices, with enhancements in the overall layout and organization further adding to visual appeal. • The design style I'm looking for is a blend of clean and minimalist, modern and sleek, and professional and corporate. • Time is of the essence for this project, requiring somebody who can deliver high-quality results ASAP. Ideal skills and experience: • Proficiency in HTML5, CSS, React, and NodeJS • A strong grasp of modern design principles • Prior experience with des...

Hello, I am currently looking for an excellent developer who is well versed in at least any one of the following fields: Java, C#, Golang, Rust, JavaScript, Python, solidity, web3, blockchain, web frontend and backend. Of course, he must be prepared to work with us long term, more than 40 hours per week. You must be geographically located in Europe or the Americas, be able to work at least 6 hours EST day time, and possess written/verbal English skills at an advanced level or higher. In order to select excellent talents, you will need to anticipate a 30-60 minute technical interview with a project manager in our team. Dont worry. We need at least 3 developers. Expected salary range is $15-$25/hr depends on experience. Please feel free to send us applications embroidered with yo...

I'm working with an API who giving the hash of a file, it returns a p7s digital sign in base64 who needs to be add it to the PDF dictionary. (It can be one or more signatures) What I want is, the ability to add the sign to the PDF in NodeJS (better if it's with typescript) and then open it in adobe acrobat and see the sign. I will provide the PDF sample, the hash of the file and the response of the API in base64 to be tested. Additionally I have an example in Java to better undestanding of the requeriments The flow of the file will be: 1. Give the hash and received the API response (this will be mocked) 2. The API response must be decoded (it's in base64) and add it to the PDF 3 A new PDF must be saved in the disk 4. When the new pdf is opened in Adobe acrobat, th...

I need a proficient Solidity and Web3 developer to help build a smart contract on the Ethereum network. The primary functionality of the contract is to facilitate fund transfers and sharing. Ideal Skills and Experience: - Solid experience in Ethereum smart contract development - Expertise in Solidity and libraries - Familiarity with test networks I need to create a smart contract and wallet connection using metamask. Here's an example; On this link, they only can donate using a credit card or debit card. I want to pay with eth test network (using metamask) and the smart-contract is; Person A needs 2000ETH for their project with a deadline of 30 days and share the profit 10% after 10 days of the project to reach the goal

I'm seeking a proficient developer to create a web-based BTC lottery application with integration to Coinbase for payments and Two-factor authentication (2FA) for additional security. The application is aimed at providing a secure and engaging platform for users to participate in a lottery using BTC as the primary currency...in creating secure applications - Prior experience in working with cryptocurrency, such as BTC and Coinbase API - Strong understanding of blockchain technology - Familiarity with implementing Two-factor authentication (2FA) If you have the necessary skills and experience to deliver high-quality work in a timely manner, I look forward to your bid. Tech stack would be Frontend ReactJs Backend NodeJs(Mongo + MySQL) Aws+ cloud deployment Looking for a MVP...

I need immediate expert help to troubleshoot my blockchain project. There's a problem uploading PDF files to InterPlanetary File System (IPFS) specifically. To clarify, the project is already built and operates on a local server. However, the issue lies in the inability to upload documents using IPFS. I believe this requires an expert with: - Profound knowledge in Solidity - Familiarity with MetaMask - Experience in dealing with blockchain projects - Specific experience in IPFS for document uploads and validation - Ability to work quickly, as I need this resolved ASAP The task involves uploading PDF files, so adeptness with this document type is paramount. Please bid if you're confident you can solve this promptly.

...Extract and manipulate data from various data sources (SQL, NoSQL, APIs, etc.). Ensure the integrations are scalable, efficient, and maintain high performance. Collaborate with our team to understand requirements and provide technical solutions. Write clean, maintainable, and well-documented code. Troubleshoot and optimize existing integration solutions. Desired Skills and Qualifications: Strong NodeJs skills Ability to read Python & Go code Abiltiy to write DBT transformations Strong experience with CloudQuery and its features. Proficient in SQL and database management systems. Solid understanding of API integrations and web services (REST, GraphQL, etc.). Experience with cloud platforms (AWS, GCP, Azure, etc.) is a plus. Strong problem-solving skills and attention to deta...

...you on this project: - **Purpose**: The main intention of this app is to generate compelling resumes. - **Technologies**: It should be developed using NodeJS and NextJS, Mongodb/dynamodb, openAi/Anthropic api. - **Features**: - **Template Selection**: Users should be able to choose from a variety of resume templates. - **Content Generation**: The application should automatically generate appropriate and well-structured bullet points based on the user's input. - ** PDF download - **Design Preferences**: The resume templates should have a professional and elegant look. I already setup Ideal freelancers should have experience in NodeJS, NextJS, generative AI, and web application development. A background in resume writing or HR could also be beneficial in unders...

I'm in need of a blockchain specialist to create a smart contract for my unique security token. - Specifics: Primarily, the smart contract should center around token creation. - Purpose: This token is going to be a security token, so it's crucial that the smart contract is coded to ensure it meets all the necessary regulatory and security standards. Ideal Skillset: - Extensive exper...security token, so it's crucial that the smart contract is coded to ensure it meets all the necessary regulatory and security standards. Ideal Skillset: - Extensive experience in blockchain technology - Proficiency in smart contract development - In-depth understanding of token creation - Specialization in security token development is a plus - Knowledge of relevant blockchain coding languag...

We are currently seeking a talented Web3, Smart Contract, Solidity developer to join our team. The ideal candidate will have experience developing on the EVM chain and a strong understanding of blockchain technology. Responsibilities: Design, develop, and test smart contracts on the EVM chain Implement and deploy decentralized applications using Web3 technologies Collaborate with team members to design and implement new features Keep up to date with the latest trends and developments in the blockchain space Requirements: Proficient in Solidity programming language Experience with and other blockchain development tools Familiarity with Ethereum and other EVM-based chains Strong problem-solving skills and attention to detail Excellent communication and teamwork skills If y...

I'm in immediate need of a skilled coder with extensive experience in blockchain technology. The ability to work confidently in a GitHub environment is essential for this project. Key Requirements: - Proficiency in at least one of the following programming languages: Solidity, JavaScript, or C++ - Demonstrable experience in developing blockchain solutions - Comfortable with working in a GitHub environment - Available to start immediately and deliver the project on an urgent basis. Your responsibilities will include: - Developing a blockchain solution based on the project specifications - Ensuring the codebase is secure and bug-free - Collaborating effectively in a GitHub environment If you possess these skills and can start immediately, please get in touch with your releva...

I'm in need of a Node.js developer with a solid background in web scraping. If you've got experience in this area, I'd like to hear from you to discuss the specifics of the job. Key Requirements: - Proficient in Node.js - Experienced in web scraping - Ability to understand and implement scraping requirements - Good communicator Looking forward to hearing from you.

I have currently a quite simple app, where I want some changes. It has been build in php / nodeJs, with some API connections. I am looking for someone to work with for a longer time.

...Description: We're seeking a talented blockchain architect to lead the creation of a pioneering blockchain network tailored for gaming. You'll design and implement smart contracts, collaborate with game developers, and optimize performance for a seamless gaming experience. Requirements: Proven experience in blockchain architecture and development. Proficiency in smart contract development (e.g., Solidity). Creative problem-solving skills and a passion for innovation. Strong communication and collaboration abilities. Gaming industry experience or a strong interest is preferred. Additional Information: Freelance position with flexible hours and remote work option. Compensation based on experience and project scope. We encourage applicants from diverse b...

I'm looking for an adept developer to create a comprehensive lottery gaming application which will be available on iOS, Android, and Web platforms. Key Features: - "Ticket Purchasing": The application should offer a seamless interface for users to conveniently purchase lottery tickets. - "Jackpot Tracking": Users need to be able to view and track the status of the jackpots including winning...and lottery enthusiasts. It should be user-friendly, and intuitive with clear instructions. Ideal candidates for this project should have experience in gaming application development and should have the knowledge of lottery systems. Familiarity with mobile and web app development will be an advantage. Looking forward to your proactive participation. Frontend: ReactJs + R...

I need help to finish my reactjs and nodejs project following a computer problem.

I'm seeking a professional with ample experience in smart contract development. We're not just looking for a freelancer, but a pro who can showcase past accomplishments in this domain. Key responsibilities will include: - Creating and implementing smart contracts - Validating and updating existing contracts Preferred Attributes: - Proficiency in Solidity, JavaScript, Python - Demonstrable expertise in smart contract development - A history of successful projects To be considered for this project, you should detail your experience in smart contract development. Include tangible examples and discuss how your expertise can benefit this project. Please note that applications without this information won't be considered.

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 - Experiences in implementing custom message p...

I'm in need of a talented developer proficient in both NodeJS and Golang for a backend system. Need to be very experienced , familiar with connecting to proxies and do background tasks . If it has knowledge on VAST and oRTB is an advantage !!! Must have experience with servers setups and optimization .

...The Google Vision API supports offline asynchronous batch image annotation for all features. Google has sample setup instructions in : Java : Node.js : Python : Need simple process (like click action button and select file with image urls) to extract numeric digits TEXT_DETECTION on JPG images hosted on cloud server using API. ATTACHED: - Sample of image from url and what is required to be extracted. - Data under green header is to be extracted from jpeg

I'm looking for a skilled developer who can refactor and migrate my current LAMP Web App into an Angular (frontend) Node.JS (backend) application. This is a project that requires a strong understanding of both LAMP and MEAN stacks. Key requirements for this project include: - **Refactoring:** The existing codebase is procedural-functional, with a mix of HTML, DB-Queries, PHP echoing out JScript, and inline-stylings. I want to move towards a more organized, maintainable and modular structure, following MVC principles. - **Migration to Angular/Node.JS:** You must have a demonstrated experience in working with Angular for the frontend and Node.JS for the backend. The functionality of UI views is clear, and the queries on the DB are available, so the primary focus will be on refactoring ...

I am seeking a proficient software developer to build a comprehensive, cloud-based logistics and Supply Chain Management (SCM) software. Key Requirements: - Inventory Management: Create a system that seamlessly manages stock levels, keeping track of product volumes across different locations. - Order Tracking: Design a function that enables swift and accurate tracking of orders from inception to client delivery. - Warehouse Management: Implement an effective way to supervises goods in and out of the warehouse. - SaaS Logistics/SCM Capabilities: Develop the software to be cloud-based (SaaS) making it easily accessible and efficient for managers, staff, and clients. The ideal candidate will have sound knowledge and experience in SaaS product development and show proficiency in creatin...

We are looking for someone to help us build a number of custom integration plugins using the framework in NodeJs/Typescript. We will make a decision on a hire after seeing their work on the attached spec. If you are interested, please submit a proposal that answers these questions: 1. Your experience with Cloudquery. If you have used it before, what plugins did you use? If you wrote your own plugins, what APIs were you connecting to, and what language did you write it in? 2. Review the attached test spec, and answer your comfort level with the ask, or ask clarifying questions. 3. How long do you estimate it would take you to complete the test. In terms of billable hours, and how many calendar days to complete.

I'm looking for a NodeJS developer who can build a comprehensive document management dashboard for my team. DEBE HABLAR ESPAÑOL. Key functionalities desired: - Document upload and storage, using a browser-based file selection interface. - Document search and retrieval system. - System for managing user access and permissions. - Upload feature should support PDF and DOC files as well as PNG and JPEG image files. - Security will be based on JWT Ideal candidates would be experienced in JavaScript, NodeJS, and knowledgeable in file handling and user permissions. Experience in developing similar document management systems would be a big plus. Your work will contribute to enhancing productivity and organization within our team. Please ensure your bid includes re...

Need solidity developer for contract basis .. exp 3+ needed

An enterprise client is looking for 1- 2 experienced front-end developers who can translate existing UI/UX designs into a functional learning platform that seamlessly integrates with the backend. The ideal candidate should have a front-end background with NextJS 14, TailwindCSS, and NodeJS and some knowledge of RestfulAPI and MySQL. Deliverables: - Develop the front-end based on the provided Figma files, with provisions for client-side and server-side rendering features that will be added by the back-end team. - Collaborate with the project and back-end team to understand project requirements and objectives. - Develop reusable UI components and design patterns to ensure consistency and maintainability across the website. - Implement responsive design techniques to create seamless u...

...understanding in high-level languages used for trading platform development is crucial. The well-qualified candidate will demonstrate: - Substantive experience working on Fx, cryptos platforms, - Proficiency in high-level languages geared towards trading platform development, - Speed and efficiency in their work, - Enthusiasm for Forex trading market. we are looking if someone have strong knowalged on Nodejs and previous have good experince with developing trading platform Trading engine and matching engines our main focus to work on Trading terminal , Please include a description of your experience in your bid, focusing particularly on your knowledge of high-level languages used in trading platform development. Prior experience in creating Forex trading platforms will be high...

...platform performance and scalability to handle increasing user demand. - Stay updated on the latest developments in blockchain technology and cryptocurrency markets. Requirements: - Strong proficiency in blockchain technology and cryptocurrency protocols. - Experience with cryptocurrency exchange platforms or wallet services. - Proficiency in programming languages such as Python, JavaScript, or Solidity. - Familiarity with security best practices and encryption techniques. - Excellent problem-solving skills and attention to detail. - Strong communication and collaboration skills. - Bachelor's degree in Computer Science, Engineering, or related field (preferred). - Previous experience with freelancing or remote work is a plus. Benefits: - Competitive compensation package - ...

...-Optimize bot performance for speed, reliability, and scalability to handle high transaction volumes. -Collaborate with the team to test, deploy, and maintain the MEV bot in production environments. -Stay updated with blockchain technologies, market trends, and regulatory developments to enhance the bot's effectiveness. Requirements: -Strong proficiency in blockchain development, including Ethereum, Solidity, and smart contract programming. -Proven experience in building MEV bots or similar trading automation tools with a track record of successful implementations. -In-depth knowledge of blockchain protocols, transaction sequencing, mempool analysis, and gas optimization strategies. -Familiarity with DeFi protocols, decentralized exchanges (DEXs), liquidity pools, and bloc...

I'm on the hunt for a skilled Full Stack Web3 Developer to join my project. Although I didn't specify which programming languages are required, having knowledge or experience in JavaScript, Python and Solidity will be a huge advantage for this project. Ideal Skills and Experience: - Strong experience in Full Stack Development - Familiarity with Web3 stack - Proficiency in JavaScript, Python and Solidity Though I've missed providing the details on what to include in the application or the preferred frameworks or libraries, having experience or competence in React, Angular and Vue.js would be beneficial. You're encouraged to provide information about your past work, overall experience and a detailed project proposal when applying. Get in touch if you�...

Software will listen to some tcp messages. When the message arrives, decode the message. Write the encoded message in a mysql table. Write the decoded information in 2 tables. Total fields to be decoded is less than 10. We provide the NodeJs version (attached) of the decoder, you will have to make the python version

INTRODUCTION: I'm keen on having a logo designed for my organization, IQRA Tutors. We offer comprehensive tutoring services in all subjects for children up to the 5th grade. We aim to convey that we're a trusted and reliable source of academic support for young students. Consequently, our logo should echo these traits. Design aesthetic must be elegant and traditional, reflecting the solidity and seriousness of the academic pursuit. I expect the designer to be imaginative in the use of symbols and colors that communicate our focus on comprehensive elementary tutoring. IDEAL SKILLS REQUIRED: • Experience in creating logos for educational institutions or tutors • Ability to create traditional and elegant designs • A knack for symbolism and visual communicatio...

Job Title: NodeJS/ Angular / PostgreSQL Developer Monday to Friday 2-3 hours/day IST Night (8pm to 12am IST) Salary: 25,000 INR per month Job Description: We are seeking a talented Full Stack Developer proficient in Node.js, Angular 11, LoopBack 3, PostgreSQL, and MongoDB to join our team. As a Full Stack Developer, you will be responsible for developing and maintaining robust, scalable, and high-performance web applications and APIs. One needs to be available in the mentioned timings and willing to work by screen share and remote control via Zoom. Skills Required: NodeJS Angular PostgreSQL MongoDB

I'm in need of a proficient developer who has strong experience in Ethereum blockchain and web3 decentralized application (dapp) development. Your responsibilities will entail the following: - Frontend development - Backend development - Developing and testing solidity smart contracts You should be comfortable using Reactjs and Angular although I have no particular preference on the frontend framework. Understanding the intricacies of Ethereum as a blockchain platform is a must for this project. I'm looking for a talented developer who can bring my concept to life, and I'm excited to work with someone who shares my enthusiasm for blockchain technology.

I'm in need of a skilled blockchain developer with in-depth knowledge of cryptocurrency. The project is currently in the prototype development stage and involves creating a new cryptocurrency. Key Requirements: - Proficiency in Cryptocurre...includes handling the technical aspects of blockchain creation, token generation, and setting up the network. - Familiarity with Prototype Development: As the project is at the prototype stage, the ability to translate concepts into a working model is key. The developer should be adept at building functional prototypes that demonstrate the core features of the cryptocurrency. Please note that while Solidity programming and Smart contract development are not primary requirements for this project, any experience in these areas would be cons...

I am building an AI Inference Hub where users can use any open-source model on a pay-as-you-go basis. The application is halfway done, however I cannot continue building the app. I need someone to continue developing on top of the already existing project. You will be given the sup...intuitive page for users to edit their information - Tokens page: - Design a page for user to retrieve their API token - Billings page: - Create a backend using sveltekit to connect to the frontend. The billing page should include a list of invoices that have been charged to the user in a table. Users should be able to download the invoice and pay using midtrans SNAP. Billing system: - Create a Nodejs script that runs every 30 days and charges users according to the number of tokens they've u...

I am building a website where user can upload csv and view/download content generated from backend, chat with uploaded file (e.g. ) I need just one page, landing page will include a browser box...processed in the backend and result will be produced in tile format (e.g. ) user can view large formats of the result by clicking over it, download it from larg/tile format. type pinaki in caps in start of your proposal. you need to focus on fuctional stuff ignore everything else from ref. () site. Tech stack: technlogy: frontend => Angular/NodeJS/(or any other tech)+HTML5 Backend is being developed by some other team, so I want only front end from this project. Also development will be in phased manner.

Hello; I need to generate a new set of websites (.EUs), integrated/generated them with an already active set with a lot of basic content (basic analysis, from set .ITs); Objective: digital sale of GREEN RIGHTS, starting in the EU and BRICS area; with option to generate some apps to upload NFT/DeFi (Solidity/ERC721) to specifics cryptocurrency markets; I think of a good system and its subsequent easy management; a lot of material needs to be reorganized, offered in English, with a sober and professional style, similar on every website, with the option of being available in every language (Wordpress); the basic contents and plan in matrix at the bottom in (first column general info, each others column basic contents on specific websites/patent); ...not need easy migration (traslati...

I'm currently facing issues with a NodeJS script which requires expert attention. Seeking a reliable professional available to start immediately.

...and Dex technologies. The original developer has gone on a trip, and we're seeking someone to continue the project. So, we want to prioritize completing the graphs and tables on our platform till he arrives. It's just the UI aspect, but it's linked to Web3, so we're looking for a Web3 developer. Key skills and experiences that are preferred for the job include: - Proficiency in Ethereum and Solidity - Experience in developing DeFi projects - Familiarity with EVM and Dex - Understanding of the blockchain technology - Ability to work in a team and deliver high-quality code in a timely manner. If you have the mentioned expertise and are interested in contributing to a promising DeFi project, please reach out with your portfolio,github and relevant experienc...

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We are looking for a back-end developer to debug and improve our product, as well as build additional features. You will be working with our front-end developer and our UI/UX designer. - SKILLS AND EXPERIENCE - • You are ready to collaborate with our front-end designer • You are ready to take an existing back-end (NodeJS + Firebase), understand it and improve it to make it work efficiently with the front-end (ReactJS) • You are comfortable with implementing APIs with external systems and providing easy-to-use endpoints to the front-end (decouple the front-end from the external systems) • You are comfortable with designing a data model for the back-end that can support the product's features • You are familiar with implementing a live chat functionality...

I'm seeking an experienced Rust developer capable of working with AWS Lambda to assist with an API integration. We currently have REST API build on top of AWS Lambda written in Javascript (Nodejs). Due to performance and compatibility issues we plan to rewrite few functions. Key Responsibilities: - Implementing API integration using AWS Lambda - Ensuring data exchange and server-side processes are seamless and efficient Ideal Skills: - Proficient in Rust programming language - Experienced in AWS Lambda and serverless architecture - Strong understanding of API integration and data flow - Familiar with best practices for secure and efficient data processing in a serverless environment

As an individual beginning a new project, I'm seeking a skilled blockchain expert proficient in Solidity. Your role will encompass the development of a custom blockchain solution on the Ethereum platform. Skills and Experience: - Strong proficiency in Solidity programming - Comprehensive knowledge of how Ethereum works - Proven experience in custom blockchain development - Be able to offer expert blockchain consultation as needed - Previous experience with Ethereum is highly desirable By joining this project, you'll have the opportunity to work on an exciting new project while using latest technologies. Your expertise and advice will be invaluable in creating a secure and efficient system.