Upstaff Developer Profile Directory

All vetted software engineers you need to build AI, Web3, and data Products.
  • Dedicated Full-time commitment for long-term or Time& Material for shorter or ongoing support
  • Europe, Israel, LatAm, United States, Asia geography coverage
  • Remote and hybrid engagement
  • Trial period, no termination fees or hidden costs for transparent and risk-free onboarding.
Business Analysis
Power BI
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- An experienced Business analyst with 4+ years’ experience in FinTech, Big Data, IoT. - Doctor of law in financial/ fintech, business analysis, and law. - Requirements Gathering & Analysis, Data Mining & Analytics - Risk Management, Use Acceptance Testing - Enterprise Implementations, KPI Dashboards & Scorecards - Economist implementing SAP R3. - Advanced English - Available ASAP
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Seniority Senior
Location Kyiv, Ukraine
Java
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- Experience with the full delivery process: requirements collection, design implementation, bug-fixing, support, installation of a patch to customer environment delivery, on-site production support - Expertise in onsite\online production supports, E2E process troubleshooting, and performance analysis. - 5+ years of experience in the development of enterprise applications
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PHP
Go
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- Software Engineer with over 7 years of experience - 3 years of experience with Go - Work on Php, Node and Golang - Upper-Intermediate English. - Available ASAP
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Seniority Middle
Location Amsterdam, Netherlands
Power BI
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- Data visualization expertise with Tableau and Power BI - Strong knowledge of PostgreSQL and MS SQL - Easy-learning and goal-oriented with good teamwork skills - Responsible, communicable, and creative - Advanced English
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Seniority Senior
Location Ukraine
Python
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- 6 + years of experience in IT. - Software Enthusiast skilled in developing, testing, and debugging code. - Upper-intermediate English. - Available ASAP.
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DevOps
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- 4+ years of experience in IT- Versatile Business Intelligence professional with 3+ years of experience in the telecommunications industry- Experience with data warehousing platform to a Big Data Hadoop Platform - Native English- Available ASAP
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Seniority Senior
Location Ota, Nigeria
Python 6yr.
Go 3yr.
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- 6+ years of experience as a Python Developer - 3+ years of experience as a Go Developer - Upper-Intermediate English - Available ASAP
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React 5yr.
JavaScript
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- Senior React Engineer with 5+ years of experience - Profound React/Vue knowledge - Available ASAP - Intermediate English
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Solution architecture
Business Analysis
Database development
System integration
Test design
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• 15+ years of work experience as IT professional. • PSM I certification with 100% score. • QA employee of the year (TEAM International 2010). • Upper-Intermediate English level. • Available Full-time. • Ready to start: two weeks. • No scheduled vacations within next 3 months.
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Seniority Architect/Team-lead
Location Ukraine
Java 15yr.
Appium 5yr.
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- Worked on leading positions with central high street banks/fin-tech firms like BAML-UK, ICBC-Standard Bank-UK, Fidelity, and Prudential. - Worked in Major Asset Classes like Commodities, Money Market, Equities, Equities Derivatives, Risk-IT, Market Operation, Financial Markets, Fixed Income - Domain Knowledge: Banking, FX, Asset allocation, Fixed Income, Regulatory reporting MiFID, Treasury, Insurance, Annuities, Mutual Funds, Retirement Services, Finance, ERP, CRM, Security, Networking, Gaming - 15+ years of commercial experience with Java and 5+ years of commercial experience automating with Appium. First experience in the banking sector was acquired in 1999. Since the beginning of 2000, has working experience in banking and finance. - A delivery-focused hands-on expert test professional with over 20 years of solid experience in providing test solutions to multi-million-dollar projects with an emphasis on automation and CI. - Certified Agile Scrum Practitioner - ISEB / ISTQB Certified Software Test Professional - Fluent English
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Seniority Senior
Location London, United Kingdom
Python 12yr.
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- 12 years with Python (Django, Flask, and other Python frameworks), PostgreSQL 10 years - 22 years of experience in tech - Strong experience in data structures, software development with object-oriented design, cloud platforms - Data scraping from SourceForge & Yahoo Finance, ETL pipelines - ELK (Elasticsearch, Logstash, Kibana) stack, various Data / API Integrations, IoT (Internet of Things) - Advanced English - Available ASAP
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Technical Writer
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- near-native fluency in English and French (6 years living and working in Canada)- vast experience in the creation of technical documentation, user guides, training materials in English and French- a wide experience of translation of technical documentation (English, French, Russian, Ukrainian)- extensive knowledge of learning technologies ample expertise in running workshops on the use of technologies - a dedicated professional with a passion for innovation, a love for a close-knit team and an ability to work in a fast-paced environment.- Native English.- Available ASAP
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Seniority Senior
Location Alberta Avenue, Canada
Go 4yr.
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- A software developer with 7+ years of experience; - 5 years of Golang experience, building applications, tools, and services/micro-services; - Experienced in developing web and network applications using PHP and Golang; - Proficient in containerizing services with Docker and Linux servers; - 8 years of Linux expertise; - Follower of good engineering practices such as test-driven design, pair programming, continuous integration, and refactoring. Committed to good coding principles such as SOLID, DRY, TDD etc. -Upper- Intermediate English - Available ASAP
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Seniority Senior
Location Dhaka, Bangladesh
Blockchain
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- 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.
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Seniority Architect/Team-lead
Location Oulu, Finland
Java 4yr.
Kotlin 3yr.
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- 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
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Seniority Senior
Location Ukraine
Solidity
NFT
Smart Contract
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- 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.
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Java 4yr.
Kotlin 4yr.
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- 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
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Seniority Senior
Location Bosnia and Herzegovina
C#
Java
SQL
AWS
MongoDB
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- 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.
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Seniority Senior
Location Kyiv, Ukraine
Java
Spring Boot
RESTful API
NoSQL
microservices architecture
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- 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.
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Seniority Architect/Team-lead
Location Poland
Solidity
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- 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.
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Seniority Middle
Location Portugal
Ruby 3yr.
Python 3yr.
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- 3 years of professional experience with Ruby - 3 years of professional experience with Python
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Seniority Senior
Location Lagos, Nigeria
AWS
Java
Spring Boot
Kafka
MongoDB
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- 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.
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Seniority Senior
Location Poland
AUTOSAR
Diagnostics
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- 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
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Seniority Senior
Location Regensburg, Germany
IOT
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- 7+ years of experience in IT - Upper-Intermediate English - Available ASAP
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Seniority Senior
Location Johannesburg, South Africa
UI/UX
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- 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
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Seniority Middle
Location Zaporizhia, Ukraine
React 2yr.
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- 3 years of work experience in tech - Crypto and fintech projects' background - Upper-Intermediate English - Available ASAP
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Seniority Middle
Location Kyiv, Ukraine
Solidity
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- 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
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Seniority Senior
Location Singapore
DevOps
AWS
Linux
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- 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
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Seniority Senior
Location Poland
Unity 5yr.
Solidity 1yr.
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- 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.
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C#
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- 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.
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Seniority Senior
Location Kyiv, Ukraine
Swift
Objective-C
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- 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.
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