Upstaff Developer Profile Directory

- 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.

- 4+ years of commercial experience with Java and 3+ years of commercial experience with Kotlin - Proficient in Java and Kotlin programming languages, with experience in Spring Boot, Spring Core, Spring Data, Spring web, and Spring Cloud frameworks - Skilled in developing and maintaining APIs for mobile and tablet apps, including Kotlin-based Screwfix app development and Java-based NextGear Capital Mobile Account Portal - Expertise in Gradle, Jenkins, GitLab CI/CD, Docker, Microservice Architecture, Scrum, and various databases and cloud platforms - Demonstrated ability to solve architectural issues and create new features, with experience in both front-end and back-end development - Worked mainly with Spring Framework stack, and different REST APIs for mobile apps and tablets, creating and maintaining them with Java and Kotlin. - Upper-Intermediate English

- 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.

- 4 years experience with Java, Kotlin - 4 years experience with microservices (soa, event driven...) - 1,5 years experience with RabbitMQ - Learning the principles of software development has provided me with valuable experience and an understanding of design thinking methodologies. I have strong fundamentals in algorithms, OOP, data structures, different architecture types, etc. - Advanced English

- 13+ years of experience in IT - Work in a globally competitive environment on challenging assignments that yield steady professional growth. I was a part of a professional and highly successful team implementing innovative ideas and the latest technological trends. Very flexible as regards moving from project to project and assimilating new technologies - Advanced English.

Product manager with experience in NFT project. - Almost 9 years of diverse experience in tech: Product Management, Agile Project Management and Business Analysis. - Upper-intermediate English. - Available ASAP

- Sr. Architect with 15+ years of experience and track record of designing and implementing innovative, cost-effective, and scalable solutions for complex business challenges. - My areas of expertise include microservices, cloud solutions, Java/J2EE, data engineering/analytics, BPEL/BPMN2/camunda/webmethods, relational/NoSQL databases, DevOps automation, containerization, and orchestration. -Highly experienced Architect with expertise in designing and managing the implementation of technology programs. Proficient in various architectural frameworks and modeling techniques such as TOGAF, C4 modeling, ArchiMate, & UML. - Adept in collaborating with business stakeholders/partners to provide the solution angle on features, planning, prioritization, & agile execution. - Capable of proposing solutions, recommending buy vs. build decisions, technology options, architecture guidance & standards, and being responsible for solution Total Cost of Ownership (TCO) and stewardship. - Skilled in designing transition and target architectures for creating digital experiences through a combination of new and existing systems.

- Development and security audit of smart contracts for EVM compatible blockchains. - Deep experience in the development of NFT (ERC721/1155) tokens and in the Defi industry. - Upper-intermediate English. - Available ASAP.

- 3 years of professional experience with Ruby - 3 years of professional experience with Python

- Solution Architect with 7 years of experience. My experience includes architecting, managing, and implementing various platform solutions. I have extensive knowledge of designing complex data solutions. I understand the tradeoffs of implementing commercial and open-source data solutions and have helped clients implement the best platform based on their business requirements. - IT engineer with 15 years of solid experience in the following areas: full development life cycle, CI/CD, software development processes and methodologies, architecture and infrastructure design, and disaster recovery solution elaboration. - Outstanding analytical and problem-solving skills. Professional oriented on a result with leadership and communications skills.

- For the last 5 years working with different OEMs on different projects - Mainly specialized in BSW integration and configuration and was diagnostics responsible for several BMW, RSA, and PSA projects. - Analyzing and resolving classic AUTOSAR BSW issues. - Providing different customers with AUTOSAR support and coaching. - Configuring different communication stacks. (CAN, LIN, FlexRay, and Ethernet protocols) - Integrating Vector’s Bootloader, Bootloader Manager, and Bootloader updater. - AUTOSAR training (Communication, Memory, and Diagnostics stacks). - Experience with different OEM modules (BMW, DAIMLER, and GM) - Fluent English - Basic German - Available from 25.07.2022

- 7+ years of experience in IT - Upper-Intermediate English - Available ASAP

- Software Engineer with excellent skills, knowledge, and work experience in web, mobile, and desktop development - Has over 6 years of experience in developing sites and applications using modern web technologies, solutions, and best practices - Major specialization is building applications based on both Javascript/ES6+ and PHP: backend frameworks Laravel, Symfony, NodeJS, Express/Nuxt/Next/Nest.js/RestAPI along with front-end JS frameworks such as ReactJS + Redux, React Native, VueJS, Angular 2+. - Rich experience in deploying and maintaining using such technologies as CI/CD, Docker, Apache/Nginx, CDN + force SSL Cloudflare, AWS(EC2, S3, Route53, RDS, Lambda, Elastic-cache, SES, SNS, SQS, Amplify CI/CD, IAM), GCP (Firestore, IAM, Cloud Run, Cloud Functions, App Engine, Real-time Database, Identity and so) - Strong skills and knowledge in DB design and management using such DBMS as MySQL, PostgreSQL, DynamoDB, SQLite, MongoDB, writing complex SQL-queries with sub-queries, transactions, cursors, creating stored procedures, triggers, sequences, pg pub/sub, etc. - Worked on over 40+ projects in various roles, like Team/Teach Lead, Architect, FE/BE Developer, with different aims and misc. tech stack - Intermediate+ English - Available from 01.07.2022

- UI/UX Designer with 3 years of experience in the IT industry - Have good strategic thinking and a marketing background - Upper-Intermediate English - Available ASAP

- 3 years of work experience in tech - Crypto and fintech projects' background - Upper-Intermediate English - Available ASAP

- 5 years of experience in the IT industry using back-end technologies (Symfony, Laravel Yii) - Developed projects from scratch and improved the performance of existing projects - Worked on RESTful and SOAP API for web, CRM, mobile, and e-commerce applications - Upper-intermediate English - Available in 2 weeks after approval for the project

- Been in Crypto space since 2017 and contributed to several DeFi and NFT projects on EVM chains. - Have deep understanding about most of the DeFi primitives including trading, staking, lending/borrowing, liquidity mining and bonding. - Intermediate English - Available ASAP

- Total work experience: 15 years - AWS commercial experience since 2015 - Using Linux Slackware since High Schoo - Proficient in: Cloudformation, Cloudfront, S3, ECS, ECR, Fargate Lambda, EKS, RDS, Route53. Uusing orchestration tools like Docker Swarm and Kubernetes. - Author of scientific papers - Advanced English

- Experience working with Solidity, and Hardhat; - Good abilities in creating smart contracts for dApps; - Good skills in creating plugins to integrate web3 in unity/unreal space from scratch; - Deep understanding of JavaScript, and React; - 5 years of expertise with Unity; - Experience with 2d/3d/Ar games with unity; - Good skills working with blackened for unity applications; - Experience with Photon, SmartfoxServer, and Nodejs; - Extensive knowledge of creating plugins for unity using Python, C++, and android studio; - English: Intermedidate.

- A software engineer with 10+ years of experience in the IT industry who builds background services and APIs that are reliable and robust. - Skilled in C#, .NET Core, Apache Kafka, PostgreSQL, Docker, and Kubernetes, and know how the Windows operating system works internally. - Has worked with high-load microservices for the last 3 years and has experience building backend orchestrators. - Has experience working in both startup and corporate environments. - Has expertise in designing features, working closely with solution architects, and leading teams to improve the maintainability, scalability, and reliability of projects. - Upper-Intermediate English.

- 7+ years experience with iOS; - Deep skills working with Swift and Objective C; - Good skills working with Firebase; - Experience working with Google services; - Solid knowledge of SOLID and DRY; - Good abilities working with fintech and banking projects; - Experience in testing; - Upper-Intermediate English.

- 3+ years in front-end web development in a field of web-oriented applications for startups, midsize businesses and large enterprises from various industries - Intermediate English - Available ASAP

• 15 years of proven experience in IT industry • 7 years experience as Solution Architect, 3 years of which in a position of Senior Architect • 12 years of experience in Java, Spring Boot, Micro Services and AWS, Google, Azure Cloud for deployment. • Worked with Ant and Maven and Gradle Build tools in Java. • Experience in designing, developing and overseeing the implementation of solutions that improve the stability, scalability, availability and latency • Expertise in steaming tools such as Kafka • Experience in MySQL, Cassandra, PostgreSQL • Automated environments setup for Developers, Staging for SQA and Production for customers • Extensive experience with Continuous Integration Tools like Jenkin, Hudson, circleci, TeamCity, Bamboo, GitLab and configuring CI/CD with unit test on builds • Experience with AWS API gateway, Lambda functions, Elastic Load Balancers, VPC, Security groups, Jump Servers, Route53, Cloud Watch and servers Auto Scaling • Worked with different Bug Tracking Tools like Remedy, Jira, ServiceNow and Clear Quest. • Ability in development and execution of XML, Shell Scripts and Perl Scripts. • Experience in cloud cost optimization, resources cleanup, automated services scaling based on load and ensuring latest security standards • Experience in linux/Unix Systems • Worked on SDLC Methodologies like Agile, Waterfall.

- 6+ years of experience in iOS development; - In-depth knowledge of iOS SDK; - Experience working with fintech and cryptocurrency projects; - Good knowledge of the development of different mobile projects; - Experience working with Objective-C; - Deep abilities with Swift; - Good skills working with Firebase; - Experience in UI/UX implementation; - Good skills in maintenance and testing; - Upper-Intermediate English.

- Experience working with Solidity; - Good understanding of Blockchain technology; - 3+ years of experience in Smart Contract development; - Deep skills with Hardhat, and Truffle; - Experience working with ethers.js and Web3.js; - Good knowledge of Ethereum, and BNB Chain; - Experience working on dApps, DeFi, and NFT projects; - In-depth abilities in creating and deploying ERC20, ERC721, ERC1155, BEP20, and BEP721 tokens; - Intermediate English.

- 10+ years of experience in IT - Upper intermediate English - Available ASAP

- Full-Stack Software Engineer with 5 years of development experience - Experience in AWS and messaging frameworks like Kafka and Spring Integration - Reworked applications to meet changing market trends and individual customer demands - Designed, developed, and implemented software applications for websites based on analyzed requirements and understanding of industry technical standards - Reviewed code and debugged errors to improve performance - Collaborated in a team-based, Agile environment to accomplish objectives by deadlines - Versed in the latest technologies and most useful programming languages - Fluent English - Available in 1-2 weeks after approval for the project

- 5 years of commercial experience in Web Development - Зку-Intermediate English

- 7+ years of experience as a Technical Writer - Experienced Technical Writer with a background in various industries, including healthcare, construction, and software development, skilled in creating and updating technical documentation and working with SMEs. Proven Scrum Master and Team Lead with experience in Agile methodologies, project management, and process improvement in multiple roles across different organizations. - Strong background in quality management and process engineering, with experience in internal audits, performance metrics, and implementing quality standards such as ISO 9001, ISO 27001, and CMMI-Dev. Proficient in English-Russian and Russian-English translation. - English proficiency is proven by the IELTS test score of 7.5 and two years of English-Ukrainian freelance translating for EU Twinning projects in the area of quality, environment, IT, and information security - Advanced English - Available ASAP

- 15+ years of experience in IT - 3 years of commercial experience in banking (Dutch and Finnish banks) - 7 years of commercial experience with Java and four years of commercial experience with Appium - Leading experience of 8 QA Engineers - Upper intermediate English

- 3+ years of experience in Blockchain development; - Good in writing smart contracts - writing multi-threaded codes; - Corda with Fluency in Solidity, Events, and Web3 ( Unix, Linux, scripting); - Good understanding of NFT, NFT Marketplace, and various Defi protocols - Experience in training and mentoring newbies smart contract auditors within the team; - Hands-on experience working on Ethereum and Hyperledger; - Good skills with C, C++, Java, HTML, Javascript, Golang, Node js, Python, React.js; - Knowledge of technical writing and research on Blockchain and Cybersecurity; - Intermediate English.