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.
DevOps
...

- Experienced DevOps Engineer with a proven track record in managing cloud environments, Kubernetes environments, Dockerizing applications, configuring CI/CD, and monitoring servers and applications. - Skilled in disaster recovery and optimization of Docker images with various apps such as NodeJS and .Net. - Successfully managed Proxmox VE clusters, administered a park of Kubernetes clusters, and managed Docker Swarm clusters. - 5+ years DevOps Engineer - 7+years site reliability Engineer - Upper-Intermediate English - Available ASAP

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Seniority Senior (5-10 years)
Location Ukraine
ASP.NET Framework
Microsoft SQL Server
JavaScript
ADO.NET
T-SQL
SQL
Azure
Biztalk Server
Design patterns
SOLID principles
Angular
AWS ElasticSearch
Entity Framework
Winforms
ReSharper
LINQ
...

• 3.5+ year IT professional in web development • Experience in development with .Net framework • Responsible, hard-working, result-oriented, creative and communicable, team player • Upper-Intermediate English level.

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Seniority Middle (3-5 years)
Location Belarus
Java
PostgreSQL
...

Kotlin, Java, NodeJS(ExpressJS, SequalizeORM), Spring boot,Postgresql,Hibernate, 3rd libs

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Seniority Senior (5-10 years)
Location Tashkent, Uzbekistan
Ruby on Rails
...

- 15+ years of project and team management in software design - 8 years of commercial Ruby on Rails experience - 2 years experience in c# / .NET / MS SQL (incl. TSQL) - 7+ years experience in system design and programming inside proprietary RAD platform for finance/accounting/ERP applications - 2 years in designing hardware/programming microcontrollers for security applications - Upper-intermediate English - Available ASAP

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Seniority Senior (5-10 years)
Location Dagenham, United Kingdom
Salesforce Commerce Cloud
...

- 15+ of experience in the analysis, design and development of online applications. - Created SOAP and RESTFULL web services for consumption by external clients. - Experience as senior Developer in developing Hybrid Applications, E-commerce websites, Web portals, Content Management System (CMS), Customized web application, Payment Gateway Integration. - Experience in working with Web based technologies using PHP, MYSQL, HTML5, CSS3, React, JavaScript, jQuery. - Upper-intermediate English. - Available ASAP.

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Seniority Senior (5-10 years)
Location Gulshan-e-Iqbal Town, Pakistan
Apache Hadoop
Kafka
GCP
AWS
...

- 8+ year experience in building data engineering and analytics products (Big data, BI, and Cloud products) - Expertise in building Artificial intelligence and Machine learning applications. - Extensive design and development experience in AZURE, Google, and AWS Clouds. - Extensive experience in loading and analyzing large datasets with Hadoop framework (Map Reduce, HDFS, PIG and HIVE, Flume, Sqoop, SPARK, Impala), No SQL databases like Cassandra. - Extensive experience in migrating on-premise infrastructure to AWS and GCP clouds. - Intermediate English - Available ASAP

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Seniority Senior (5-10 years)
JavaScript
Angular
...

• 4 years of experience • JavaScript, Typescript, C# • Fluent English

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Seniority Middle (3-5 years)
Location Caracas, Venezuela
Magento 1,2 14yr.
PHP
...

- 14+ years of experience in Magento and PHP Software engineering of backend and frontend web development. - Database design - Providing technical expertise to software requirements specifications - Refactoring and optimization of existing code - Object-oriented design and programming - Managing and helping other engineers - Estimating projects. - Upper-Intermediate English, French, and Polish - Intermediate German; reading, writing - Italian - Available

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Seniority Senior (5-10 years)
Location Ukraine
Scala
Java
...

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

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Seniority Senior (5-10 years)
Location Belarus
Unity
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- Strong Unity developer with over almost 4 years of experience - Experienced with AR, VR, mobile and desktop games, applications - Upper-Intermediate English - Available ASAP

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Seniority Senior (5-10 years)
Location Ukraine
Java
React
...

- Full Stack developer with 4+ years of development experience - Upper-Intermediate English - Available ASAP

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Seniority Senior (5-10 years)
Go
Node.js
...

- 14+ years of software development. - Experienced software developer with extensive skills in developing high-load multi-component systems featuring diverse languages and technologies. - An expert in the establishment of value-driven processes and cross-functional teams for the successful delivery of innovative products. - Upper-Intermediate English - Available ASAP

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Seniority Senior (5-10 years)
Location Ukraine
Ruby
...

• Ruby developer with 7+ years of experience in the IT industry. • Upper-Intermediate English level. • Available full time, ready to start in several days after approval .

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Seniority Senior (5-10 years)
Location Belarus
Ruby
Ruby on Rails
CSS
HTML
PostgreSQL
...

- 4+ years of experience in the IT industry as Ruby on Rails developer - 1 year of experience in creating an e-learning platform - Experience in creating scripts for parsing. Experience in creating functionality - Intermediate English - Available ASAP

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Seniority Senior (5-10 years)
Location Ukraine
Salesforce
...

- Software Engineer with 7+ years of experience in analysis, design, development, testing and implementation of various Force.com applications. - Intermediate English - Available ASAP

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Seniority Senior (5-10 years)
Location India
JavaScript
TypeScript
React
...

- Front-end developer with almost 5 years of experience in creating and maintaining web applications using - React.js and related technologies. Have experience working in multinational teams and projects from different domain areas. - English: Upper-Intermediate - Ready to start in 2 weeks

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Seniority Senior (5-10 years)
Location Ukraine
C++
...

- Senior С/C++ backend developer with 8+ years of cumulative experience. - He developed a C++ project for a large spreadsheet editor. Has to experience in compiling tables SDK library. - Intermediate English level.

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Seniority Senior (5-10 years)
Location Ukraine
Ruby
JavaScript
TypeScript
PHP
Ruby on Rails
...

- Has 10+ years of software development experience. - Worked on 4 projects for 3 years using my Ruby skills as a Full Stack Developer. - Has 3 years of experience as a tech lead in a Front-end team. - Experience in creating architectural solutions, code optimization and verification. He also knows how to create new features, fix bugs, implement design and user interface, as well as establish interaction between the Front-end and Back-end parts. - Advanced English - Available ASAP

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Seniority Senior (5-10 years)
Location Ukraine
JavaScript
Node.js
React
...

- He has 6 years of experience with React, 3 years with Node.js, and 1 year with React Native. - Has been constantly working with European and American clients. Two big German projects being as a lead React Developer. - Recent 2 projects were connected with healthcare, where Nikita used React as well as React Native and Node.js. - Quite good with JavaScript in general. English Intermediate+, which is quite enough for communication with the client. - Creating new customer and admin workspaces UI/UX, statistics for NFT marketplace value with Apex charts, new landing pages creation, and introduction of new crypto logic with web3. - Experience in integrating back-end with smart contracts.

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Seniority Senior (5-10 years)
Location Ukraine
Scrum
...

- I bring unique, extensive and field-based experience to the topic of implementing Lean and Agile at Scale. Throughout my career, I have served as a project and delivery manager in multi-cultural distributed environments. As a trainer and Scaled Agile consultant I have led roll-outs of SAFe in Product and Outsourcing companies and trained hundreds of SAFe specialists in Europe. - Upper-Intermediate English - Available Part-Time

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Seniority Senior (5-10 years)
Location Poland
Node.js
Go
...

- 3+ years of software development - Upper-Intermediate English - Available ASAP

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Seniority Middle (3-5 years)
Location Republic of Moldova
React
...

- 4+ years IT professional in front-end web development in a field of web-oriented applications for product company. - Experienced in different approaches, front-end engineering principles, and concepts. Created SPA with React, Redux, Material UI, Typescript, Next.JS. - Upper-Intermediate English. - Available ASAP

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Seniority Senior (5-10 years)
Location Zaporizhzhya, Ukraine
Salesforce
React
...

- 5+ years of experience in developing - Has worked with the integration of LWC flow (Salesforce) into React for (financial sphere). - Worked on WeControl GDPR management platform. - b2b/b2c portal for the wholesale business of building materials.

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Seniority Senior (5-10 years)
Location Ukraine
Java
Kotlin
...

- Android Engineer (6 months) - Educational program (mentoring, code review, git-flow, task management, time management) - Android Fundamental Courses - Available ASAP

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Seniority Junior (1-2 years)
Location Kharkiv, Ukraine
JavaScript
...

- 6+ years of experience in Frontend Developer - Significant experience in commercial software development, solid experience in building rich web applications using framework such as ReactJS - Upper-Intermediate English - Available ASAP

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Seniority Senior (5-10 years)
Location Ukraine
Angular
...

- 10 years of work experience with frontend development - Strong knowledge of Typescript - Ensuring the high performance web applications across all platforms, including desktop and mobile - Writing tested, idiomatic, and documented elements of JavaScript, HTML, and CSS - Coordinating the workflow between the Angular developers and the HTML coder and graphic designer - Cooperating with the backend developers while building the REST fuI API - Websockets - Staying in close communication with external web services - Closely worked with UI/UX designers, Wireframing - Using common methodologies (KISS, DRY, SOLID)

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Seniority Senior (5-10 years)
Location Lviv, Ukraine
Node.js
React
...

- 4+ years of professional experience using front-end and back-end technologies - Back-end: NodeJS, Express, Nest, REST API, Docker, Google, Facebook auth, Postgres - Front-end: React, Redux, Redux-Thunk, React-query, Webpack, Material-UI, Vite, Jest, Lodash, HTML, CSS, BEM, SASS/SCSS, LESS, Bootstrap - Intermediate English - Available in 2 weeks after approval for the project

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Seniority Middle (3-5 years)
Location Dnipro, Ukraine
Java 15yr.
Python 3yr.
Hadoop ecosystem
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• 10+ year experience with JAVA and Linux operating systems: Java 11, Spring Boot, Spring Data JPA, MySQL/MongoDB, ElasticSearch, Jenkins CI • Big Data, Data Engineering, NLP, Corpus Linguistics, ML, DL • Design and implement a distributed warehouse system (AWS migration), REST API design and cache implementation (1,000-10,000 requests/sec), Design and implement high-load microservices • Deliver special courses devoted to concurrency and prepared handbook on “Parallel and Distributed Computations” [technologies: (basics of OpenMP, MPI, CUDA, OpenCL), advanced in Java concurrency]; • Scientific projects at university related research increasing effectiveness of crypto-analysis • Upper-Intermediate English • Available Full-time • Ready to start in 2 weeks • No scheduled vacations within next 3months

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Seniority Senior (5-10 years)
Location Ternopil, Ukraine
QA
...

- 11+ years of experience in IT - A proven QA leader in manual and automation and strong Agile/DevOps follower. - Upper-intermediate English. - Available ASAP.

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Seniority Senior (5-10 years)
Location Montreal, Canada
Node.js
React
...

- 3+ years of professional experience using front-end and back-end technologies - Front-end: JavaScript(ES6), React, Redux, Redux-saga, Context API, React Hooks, Vue js, Vuex, Angular, HTML, CSS(SCSS), MaterialUI, AntDesign - Back-end: NodeJS (Express, NestJS), REST API, Docker - Solid experience in building rich web applications (monolith and MSA) using frameworks and libraries such as React, NestJs, Express, and Vue js. - Intermediate English - Available in 1 week after approval for the project

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Seniority Middle (3-5 years)
Location Schiedam, Netherlands
Node.js
JavaScript
...

- 5+ years of experience, working in the cyber security sector, fintech, crypto, and agrotech, a team player and always ready to learn new things - Upper-Intermediate English level. - No vacation plans

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Seniority Senior (5-10 years)
Location Hungary
Node.js
React
...

- 4 years of professional experience with front-end and back-end development - Back-end: NodeJS (Express, Nest), REST API, Docker, Google, Facebook auth, Postgres - Front-end: HTML, CSS, BEM, SASS/SCSS, LESS, Bootstrap, Material-UI, ReactJS, Redux, Redux-Thunk, React-query, Webpack, Vite, Jest, Lodash - Available in 1 week after approval for the project

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Seniority Middle (3-5 years)
Location Kremenchuk, Ukraine
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