Hire Vetted Blockchain Engineers at Upstaff - Page 3

- More than 10 years of experience in developing applications using JavaScript and TypeScript - Experience with a setup a blockchain IoT network using the Hyperledger(infrastructure) - Built a system and smart contracts, that are deploying into ETH network for digital signing of contracts for each deal of customers - Setup an ETH explorer - Build a web game, based on Solana, NFT tokens - Experience with a migration from a monolithic architecture to microservices, it helped to spread jobs between teams and increased development speed, also here grew and lead the most productive team in the company (11 people) - For the KYB/KYC platform startup based in Estonia architectured and implemented a whole app with Nest.js and React, it helps to build scale and flexible application, CQRS architecture - Built processes for project lifecycle from development to release, CI/CD, started and scaled team, held workshops for the team - Built a headless modern framework for frontend that based on React, swiftly increased a development speed - Solved problem with a slow project building, increased speed x7.7 (210s ->27s) - Supported a quite aging project and migrated some parts to microservices, wrapped into Kubernetes - Optimized database queries, increased x3 - Suggested a better structure for a codebase for GraphQL and React, increased development speed - Architecture & Tech Lead at Node.js Department

- Python Software Engineer with more than 4+ years of experience in software development - Proven ability to design and build telegram chatbots from scratch, implementing functionalities like search algorithms (CV parsing), voice recording, and payment processing integrations (Stripe, Liqpay). - Has experience integrating GPT with telegram bots - Expertise in database management (PostgreSQL, SQL Alchemy) and data security. - Implemented continuous integration and deployment practices (Jenkins, Docker) for streamlined deployments. - Excellent knowledge of common software engineering practices, like OOP principles, modern design patterns, test-driven development, continuous integration, and continuous deployment

- PHP Backend-developer with 10+ years of experience. Most of my career I use Laravel as my main instrument. Worked in teams up to 10 members as backend-dev. - Also worked as freelancer - full-stack dev/manager: finding clients worldwide and communicating with them directly, creating teams of 2-3 people and managing their work - Upper-Intermediate English

● 9 years of Ruby on Rails development ● Extensive knowledge in web and mobile development lifecycle ● Skilled in agile and waterfall project management methodologies, SCRUM experience ● Accountable, communicable, dedicated team player, self-motivated, conscientious, creative individual, well-experienced in troubleshooting, able to learn quickly and effectively ● Upper-Intermediate English ● Computer Systems Analyst (Master's degree)

-Software Engineer with 5 years of professional experience, working across eCommerce & retail, Marketplace, Healthcare, Entertainment, Education, and Blockchain, Game domains. -Proficiency in PHP, JavaScript, TypeScript, React - Knowledge of Vanilla JS, Native PHP, PHP-Selenium - Experience working with Web3 marketplaces, nodes, on-chain, and off-chain transactions - Knowledge of Web3, understanding of Abi, Smart Contracts; Tampermonkey, Greasyfork - Knowledge Css3, Bootstrap 4; RPC; GitHub; MySQL - Has a successful track record of developing applications from scratch and optimizing existing systems, evidenced by projects such as a Learning Platform, Event Manager, and a Website for a Coin Game - Computer Science and Software Engineering Foundation

- Software Engineer with more than 5 years of commercial experience in software development - Interested in cloud computing, software architecture design, and efficient algorithms - Deep knowledge of Web development technologies - Excellent knowledge of common software engineering practices, like OO principles, modern design patterns, test-driven development, continuous integration, and continuous deployment - Extensive experience in building architecture and database optimization - Extensive experience in mentoring specialists, making code review - Quick learner, team player, goal-oriented and responsible. - Upper-Intermediate English

- Software Engineer with 5+ years of commercial experience building software from scratch; - Good knowledge of main clean code principles like DRY, SOLID, YAGNI, KISS; - Have experience building software solutions from the ground up: from discussion with clients or businesses to understand the problem, field of study and problem research, to deployment and post production support. - Upper-Intermediate English. - Available ASAP.

- Position: Project Manager (PM) with Knowledge of French - Educational Background: Master's degree from IAE Lyon, with specialization in international business development, strategic management, and marketing. - Project Management Experience: Managed engineering vehicle projects and marketing initiatives at renowned companies such as Daimler AG, Renault Group, and PSA Group. - Strategic Insights: Coordinated strategic projects focused on customer satisfaction across markets and headquarters. - Market Analysis Expertise: Conducted an in-depth study of the German automotive insurance market. - Technical Proficiency: Analyzed vehicle development projects and processes, ensuring alignment with organizational objectives. - Native French - Fluent English

- Highly Professional Software Engineer with 7+ years of expertise in QlikView and over 2 years of hands-on experience in the blockchain industry. - Proficient in Solidity and DAML Smart Contracts, he possesses a strong command of blockchain technologies. - With developed analytical and problem-solving skills, Oleg excels in identifying efficient software solutions to complex challenges. - He consistently meets project requirements and delivers results within deadlines. - Upper-intermediate English.

Blockchain Developer and Software Engineer with over 5 years of hands-on experience. Skilled in multiple key programming languages including Rust, Solidity, Python, JavaScript, and TypeScript, and proficient in English with a B2 level. Holds a comprehensive education in Computer Science and Software Engineering. Technical expertise is demonstrated in diverse blockchain environments like Ethereum, Polygon, and Solana, including advanced skills in smart contracts development, security optimizations, and integration of various blockchain technologies. Proven track record in backend development with frameworks such as Django and Node.js, cloud services like AWS, and proficiency in DevOps tools such as Docker, Kubernetes, and Terraform. Successfully improved deployment speeds by 40% through Helm charts and bolstered smart contract security to mitigate 95% of exploit vectors. Combines a passion for programming with effective leadership and project management abilities which contributes to technological advancements and project success.

Software engineer with a comprehensive background in full-stack and blockchain development. Proficient in languages like Rust, Solidity, TypeScript, C#, and C++, with 3 years in JavaScript and Solidity. Strong focus on blockchain ecosystems, having utilized Solidity, Ink!, and Substrate across various innovative projects, including a SPL-token creation using Solana and a cybersecurity platform for Earth satellites leveraging blockchain tech. Experienced in both front-end and back-end paradigms, employing .NET 7, ASP.NET, and React, and tools like Docker and Swagger for deployment and API management. Responsible for leading the development of complex web3 applications, such as a staking platform and a branded shoe online store, showcasing a strong understanding of SDLC, including testing with tools like Hardhat and Foundry. The engineer's project roles demonstrate an ability to handle full-stack responsibilities and a proven track record in delivering robust, scalable applications in diverse domains such as game development, e-commerce, and NFTs.

- Expert in creating and leading tech-driven blockchain and fintech solutions with robust marketing and strategic prowess; - Oversaw development and strategic planning as CEO of a self-developed platform; - Expertise in managing sizeable teams, particularly with a team of 8, driving product growth and optimizing marketing budgets; - Deep skills led initiatives in various acquisition, retention, and branding strategies, with experience across multiple international markets; - Deep understanding of HTML5, CSS, and growth-hacking techniques, underscoring a commitment to technical and user-experience excellence; - Experience in consulting web3 projects that raised investment rounds through token sales: 1. Web3 gaming platform raised $400k in 2 rounds (pre-sale, sale through launchpads). 2. Dex exchange ~$100k in one round of sale. - Created company from idea to full function product(2022-2023); - Company growth from 20k to 1 million USD FTD/month; - Max 1 month ROI=1361% (12/2017); - Optimized marketing budget in 2 times as effective (05/2019).

- With over 12 years of growth marketing experience and 4+ years of specializing in web3 companies, brings hands-on expertise across diverse crypto verticals including exchanges, online casinos, crypto products, b2b solutions, and P2E gaming. - Data-driven marketing strategies have delivered proven results for blockchain startups and web3 companies targeting key geographies like the USA, Europe, China, Philippines, former Soviet Union countries, the UK, Australia, Canada, the specializing Middle East, and Scandinavia. - As a strategic marketing leader, exceling at capturing attention, building trust, and accelerating revenue across these global markets. - Analytical approach couples creative thinking with rigorous optimization across acquisition channels, empowering brands to scale strategically. - Collaboration with multiple blockchain projects double their business, increase revenue by millions, and rapidly grow users in target regions through my nuanced understanding of local cultures and buyer mindsets.

- Experienced Blockchain Developer / Software Engineer with 6 years of experience in crypto financial and DeFi domains. - Proficient in programming languages such as Solidity, Python, and JavaScript. - Strong expertise in blockchain technologies including Uniswap, Ethereum, Polygon, SSV.Network, and wallet integrations. - Skilled in backend development using frameworks like FastAPI, Flask, and Node.js. - Familiar with message brokers like Kafka and cloud platforms like AWS and Azure. - Proficient in DevOps tools like Docker, Kubernetes, and Helm. - Experienced in working with databases like PostgreSQL, MongoDB, and DynamoDB. - Strong knowledge of source control systems like Git, Bitbucket, and GitHub. - Demonstrated ability to design REST API schemas and architect DAO systems. - Proven track record in blockchain development, smart contract optimization, and security audits. - Experienced in setting up and configuring network parameters and implementing identity and access controls. - Proficient in setting up CI/CD pipelines and conducting code reviews. - Skilled in implementing and managing smart contracts compliant with relevant laws and regulations. - Experienced in optimizing storage and computation within smart contracts to minimize transaction costs. - Strong knowledge of SDLC, software development practices, and software engineering principles. - Excellent communication and team collaboration skills. - Computer Science and Software Engineering education background. - Proven ability to find common language with the team and lead on various projects.

- Software engineer with 5+ years of experience in computer science and software engineering. - Proficient in JavaScript, TypeScript, and Solidity programming languages. - Extensive experience in frontend development using React, Redux, Zustand, and other related libraries. - Deep knowledge of blockchain technologies, including Hardhat, ethers.js, and OpenZeppelin. - Skilled in project management, with experience in developing decentralized applications and smart contracts. - Familiar with software development methodologies such as Scrum and Kanban. - Strong problem-solving and team-working skills, always ready to learn new technologies and take on new challenges.

Strong software engineer with 5 years of experience in blockchain development; - Proficient in TypeScript, JavaScript, Web3, and various blockchain technologies such as Rust/Solana, and Polygon/Solidity; - Skilled in smart contract development, DAO implementation, and blockchain integration with web applications; - Experienced in building decentralized applications (dApps) and NFT marketplaces; - Knowledgeable in implementing online crypto payments and blockchain-based gaming systems; - Familiar with AWS, Firebase, and other cloud services for scalable and secure application development; - Achievements include implementing tokenized player trading, decentralized tournaments, and interactive NFT marketplaces; - Strong problem-solving and troubleshooting skills with a solid understanding of browser and web concepts.

- Software Engineer with 5 years of experience in building web applications and expertise in blockchain, DeFi, NFT, and tokenization domains. - Proficient in programming languages such as Solidity, Node.js, Python, and Java. - Experienced in back-end development using technologies like Spring, Hibernate, and JDBC. - Skilled in working with blockchain technologies including Ethereum, ERC721, ERC1155, and EIP712. - Familiar with CI/CD tools like Jenkins and containerization platforms like Kubernetes and Docker. - Strong knowledge of database management systems like PostgreSQL, MySQL, and MongoDB. - Well-versed in agile methodologies like Scrum and Kanban, with a solution-oriented approach to project objectives.

- Blockchain developer / Software Engineer with 5 years of experience in the field. - Proficient in programming languages such as Solidity, Rust, and Python. - Extensive knowledge and experience in blockchain technologies including Ethereum, Optimism, Waffle, Truffle, and Ganache. - Skilled in backend development using frameworks like Django, Django Rest Framework, and FastAPI. - Experienced in working with databases like PostgreSQL and MongoDB. - Proficient in cloud services and DevOps tools such as AWS, Docker, and Docker Compose. - Strong expertise in version control systems like Git and collaboration platforms like Bitbucket and GitHub.

- More than 8 years of professional experience in backend development. - Proficiency at application architecture principles (including SOLID / DDD / DRY / KISS). - Understanding and efficient usage of design patterns. - Extensive experience in designing and implementing Cloud-based solutions across various delivery methods (SaaS, PaaS, IaaS), enhancing scalability, flexibility, and cost-efficiency. - Project/ tasks estimation (concept-based, milestone, roadmap, detailed). Agile / Scrum / Kanban (both team management & development). - Test-driven development (real unit- & acceptance- tests usage everyday). - High load optimization (both game backend and enterprise system solutions).

- Strong abilities working as Head of Projects Managers in a large technological company with several products; - Product manager with experience in NFT, GameFi, and FinTECH projects. - Nearly 11 years in IT domain positions like - Business Analyst, Project Manager, Product Manager, Marketing Manager, and PHP coder; - Strong skills working as a Delivery Manager; - In-depth knowledge of creating roadmaps and launching MVPs of blockchain projects; - Deep Experience with DeFi projects and Centralized Exchanges; - Good knowledge of creating and launching versions of launchpad, staking, and mobile crypto wallet for blockchain projects; - Experience in building teams and managing different types of projects to the market launch; - Work experience in creating the optimal product structure of the project; - Good skills in creating complete project documentation; - Experience in creating and launching a project brand; - Upper-Intermediate English; - Available: ASAP.

Alexander P. is a PHP developer with experience in building and supporting websites using PHP based frameworks. He has a Master's Degree in Information control systems and technologies. Some of his key technical skills include PHP, MySQL, REST, Laravel, WordPress, JavaScript, jQuery, AJAX, Vue.js, Git, XML, HTML, CSS, CI/CD, Docker, Google APIs, and Facebook API. He has worked on projects such as an online marketplace for booking event spaces, a CRM system for managing claims and vehicle repairs, and an iOS/Android application for meeting. Alexander has a strong background in software engineering and computer science education, with several years of experience in the field. He is proficient in various programming languages, technologies, and tools, and has experience with different methodologies, principles, and patterns in software development. Alexander's technical expertise and domain knowledge make him a standout candidate for software engineering positions.

- Self-motivated and result-driven front-end developer with 5+ years of experience - Skilled in Angular and JavaScript, with extensive experience in their development and ecosystem - Strong ability to write clean code, debug performance issues, and implement features based on client and user needs - Possesses good logical thinking and a high level of responsibility - Excellent attention to detail and ability to work well in a team - Proficient in various programming languages and technologies such as JavaScript, TypeScript, HTML, CSS, SASS, Angular 2+, npm, Webpack, Redux, Rest API, RWD, Figma, Bootstrap, rxJS, docker, ionic, firebase, and JWT - Experienced in working with databases like MongoDB and MySQL, and familiar with source controls like GIT and tracking systems like Jira and Trello. - Intermediate English - Availability starting from ASAP

- 9+ years of experience in IT; - Experience working with Blockchain products; - Deep knowledge and skills in development of fintech products (CeFi/DeFi); - Work experience with Development and work on UI / UX design, and web programming (HTML, CSS); - Familiar with logic controller and CNC machine programming; - Experience in project management and sales - Good skills in organizing the work process in a team using Agile methodology; - Good understanding and vision of product development and its design solution; - Upper-Intermediate English; - Available ASAP.

- 10+ years overall of experience in IT - Management: Change management, Program management, Project management, Account management - Upper-Intermediate English

Developer

- 3+ years of experience in the IT industry as a Java Software Engineer - Upper-Intermediate English - Upper-Intermediate German - Available ASAP

- 10+ years of IT industry - Highly skilled software engineer with experience leading operations in software development projects. - Proficient in project management methodologies including Agile development with a focus on reducing costs and shortening process times. - Upper-intermediate English - Available ASAP

- 12+ years of experience. - Present talks, explain and give classes about web3 concepts and integrations for blockchain, NFTs, cryptocurrencies, and metaverses. - Bridged the gap between Product/Product Marketing providing data for ‘wants vs. needs’ of dev community for product development. - Executed production strategies and campaigns to more than 500 million users worldwide for all content available on Google Play store. - Led the product development for a multi-million dollar mobile Disney game planning sprints and restructuring the entire project. - Directed product development at five tech and game startup companies simultaneously while getting a Master of Science degree. - Led development of ground-breaking web projects at my own startup using custom-built systems and advanced API integrations. - Upper-intermediate English. - Available ASAP.

Product manager with experience in blockchain development, smart contracts, oracle authenticity, and also creation, implementation, and development of NFT products. - Solid knowledge of blockchain and smart contract. - Strong NFT project management skills. - 10+ years of experience. - Fluent English. - Available ASAP.

- A technology professional with 5+ years of experience in the blockchain industry, I specialize in the development of secure and reliable distributed ledger applications and smart contracts. - I am highly skilled in Ethereum, Aptos, Polkadot, and other distributed ledger technologies. Additionally, I have experience building and managing blockchain networks, developing core components and custom modules, deploying and operating blockchain nodes, and creating BaaS functionality for enterprise customers. My skillset also includes working with Solidity, Golang, Rust, Move, Cosmos SDK, CosmWasm, DeFi, DEX, and Multi-Chain Metaverse. - Try to learn new things and update your knowledge. Committed to the clients and always work with 100% client satisfaction.

- Developer with 18+ years of experience in large IT companies , with Bachelor’s Degree in Systems Analysis and Blockchain Engineer training. - Developer of Smart Contracts and tokens since 2017 (Solidity -EVM ) and a great enthusiast participant in the world of cryptocurrencies since 2014. - Data Science Academy Mentor in 2020. - Advanced English. - Available ASAP.