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.
All
All
Web Application
Data and Analytics
Cloud and Operations
Mobile Application
Blockchain
Digital Platforms
Design and Creative
Quality Assurance
Project Management
Desktop Application
Scripting and Automation
Embedded Systems
Marketing and SEO
Writing and Translation
Low-Code and No-Code
GameDev
Industrial Engineering
Node.js 6yr.
Vue.js 6yr.
TypeScript
PostgreSQL
React
- A full-stack Typescript engineer with experience in SAAS, Enterprise, Fintech, Healthcare, and Games, end-to-end ownership, and ability to work fast.
- Seeking a challenging Senior Software Engineer position to deliver exceptional value to users and drive positive impact in our world, and apply extensive background in software engineering:
- 7 years with PostgreSQL, Node.js (Express, Koa, Fastify), Nuxt, and Storybook.
- 6 years with Vue.js (lead v1/v2->v3 migrations, VueFire, and Storybook component libraries, Game engine) and React.
- AWS, Azure, Serverless architecture (Lambdas); Containerized infrastructure, testing, performance, and CI/CD.
Python 5yr.
Django 3yr.
Mobile development
Flask
API
- Ranked among the Top 10 local freelance Python engineers at the age of 17.
- Contributed to projects with a multi-million user base, focusing on backend scalability and production stability.
- Successfully launched and supported a USA educational platform used by students, tutors, and academic institutions.
- Represented the development team at the international Wefi Beyond Banking Summit, presenting a fintech product to a global audience.
- Built and maintained production-grade backend systems, automation tools, Telegram bots, and API integrations for fintech, crypto, payments, and business operations.
C++
C
Linux Kernel
Embedded Linux
Python
- Senior Embedded C/C++ Engineer with 6+ years in embedded systems, IoT, and network protocol development
- Experience with embedded Linux, Linux kernel modules, and system-level architecture across Linux and STM32
- Develops software components and firmware in C/C++ and Python, including drivers, communication stacks, and control systems
- Skilled with TCP/IP, UDP, TLS, LWM2M, and real-time data pipelines; experience with low-latency video and telemetry systems
- Debugging and profiling skills (GDB, OpenOCD, Wireshark); works with cross-compilation, Yocto, and CI automation
JavaScript 10yr.
React 10yr.
Node.js 7yr.
React Native 2yr.
Java
- 15+ years of experience in web development
- Front-End: JavaScript & TypeScript (React, Angular, Vue.js).
- Mobile: React Native.
- Back-End: Java (Spring Boot, JavaCV + FFmpeg for media processing), Node.js, Next.js, TypeScript, PHP.
- AWS Cloud infrastructure, Lambda/Serverless, SNS/SQS.
- Unit testing, integration testing, testing automation frameworks and tools
- M.Sc in Software Engineering, GAI, LLMs.
- Experience leading and mentoring a team of developers, including assigning tasks, providing guidance, and ensuring the team's success. Conducting assessments and interviews. Ability to motivate and train team members, resolve conflicts, and providing constructive feedback.
Node.js
React
TypeScript
NestJS
- Software engineer with 6+ years in backend/fullstack development (Node.js, TypeScript, microservices), specializing in serverless architectures
- Domain expertise in Travel/Vacations and Payment/Banking systems, currently working at Guesty (data distribution channel management, Booking integrations, payment APIs)
- Built scalable distributed systems with AWS Lambda, Kubernetes, MongoDB, Kafka/RabbitMQ; aware of serverless limitations (compliance, DB coupling, cost)
- Experience with Java, Rust, Solidity; delivered MVPs quickly (Next.js, MongoDB) and onboarded clients efficiently
JavaScript
TypeScript
React
Node.js
PostgreSQL
- Full-Stack Developer with experience in Node.js, Nest.js, and Spring; React (pet projects with Vue).
- Backend expertise in microservices, MongoDB, PostgreSQL, and secure API design (OAuth, JWT, Webhooks). Experience with AWS, Azure, CI/CD, Docker.
- Domain experience: Fintech (SAAS Fintech/BI platform), and Healthcare (DUBAI, Event Management)
- Based in Tel Aviv, an Israeli citizen, open to on-site and hybrid work.
Java 7yr.
FHIR 3yr.
- Software Engineer with 9+ years of expertise in Java, Kotlin, and Spring Boot; DevOps and SRE, and Team Lead roles.
- 4 years with FHIR integrations (US Healthcare project until UA office lay-offs in 2022)
- Proficient in CI/CD pipelines, infrastructure as code (Terraform, Ansible), and monitoring tools (Prometheus, Grafana) with hands-on DevOps experience on OpenStack and cloud platforms.
- DB (MariaDB, MSSQL, MongoDB), messaging systems (RabbitMQ, ActiveMQ, Azure Service Bus), and integration with Shopify and FHIR standards.
- Holds a B.Sc. in Software Engineering
Azure DevOps
PowerShell
Azure
Kubernetes
- DevOps Engineer with 5+ years of expertise in automating Azure and hybrid cloud infrastructures using Terraform, Terragrunt, and Azure DevOps.
- Proficient in Kubernetes (AKS), containerization (Docker), and scripting with PowerShell, Bash, Python, and Go to enhance deployment automation and operational efficiency.
- Experienced in managing identity and access with Entra ID, hybrid AD, and securing cloud environments using Defender for Cloud, Sentinel, and CrowdStrike.
- Skilled in building and maintaining CI/CD pipelines with Azure DevOps, GitHub Actions, and GitLab CI, supporting scalable and reliable application delivery.
- Location: Poland, EU timezone
JavaScript
TypeScript
Node.js
React
- Full-stack engineer with 8+ years of experience specializing in JavaScript and TypeScript. Strong Computer Science background and a proactive, collaborative team player.
- Expertise in building complex cross-platform applications using React.js, React Native, Angular, Node.js (Nest.js, Express), and Java (JVM ecosystem, Gradle, REST APIs, Android tooling, API integrations).
- Developed AI-powered chatbots with Whisper & HeyGen, real-time messaging platforms, and serverless solutions using AWS Lambda, API Gateway, Cognito, and MongoDB (Mongoose).
- Skilled in Redux Toolkit, RxJS, responsive UI development, accessibility, performance optimization, refactoring, and CI/CD with Serverless Framework.
Node.js 5yr.
JavaScript
TypeScript
React
- Senior Full-Stack engineer with 6+ years of expertise in SAAS, finance, e-learning, gambling, and e-commerce domains.
- Strong in Node.js, TypeScript, Next.js, React, React Native; builds scalable architectures, real-time features (Firebase), and REST/GraphQL APIs.
- Hands-on with CI/CD, Docker, AWS/Vercel, and state management (Redux, Zustand, Vuex).
- Master's in Computer Science from Lviv Polytechnic National University (Ukraine); applies clean code and modular design.
- Skilled in cross-team collaboration, Jest test coverage, and responsive UI with Material UI, Tailwind, and CSS preprocessors.
Node.js
React
TypeScript
AWS
- Senior JavaScript Engineer with 8+ years of experience; MS in Computer Science and Software Engineering.
- Node.js, TypeScript, PostgreSQL, and AWS; High-load projects with JS/TypeScript, Java, QT, and C++.
- AWS serverless, Lambda functions (migration architectures, reduced infrastructure costs by 40%, microservices that handle 10K+ concurrent requests with latency less than 200ms); Experience migrating monolithic systems to serverless and microservice architectures, optimizing performance and reducing infrastructure costs (~40%);
- Skilled in SDLC practices, including Agile/Scrum, CI/CD pipelines with GitHub Actions and Docker, and pre-test development using Jest and Playwright;
Entra ID
Azure
MDM
Microsoft Intune
PowerShell
- 6+ years managing IT infrastructure across Azure, AWS, and GCP, with hands-on expertise in Microsoft Intune for Windows, macOS, and Linux environments.
- Strong background in hybrid identity (Active Directory + Microsoft Entra ID), including user lifecycle management, RBAC, OU design, and GPO administration. Experienced in building secure Entra ID environments with PIM, Conditional Access, and Identity Protection for 300+ users.
- Contributed to AD to Azure AD migrations, ensuring secure identity transformation. Skilled in security automation, endpoint protection, and PowerShell/Graph API scripting.
JavaScript 7yr.
WordPress 7yr.
Vue.js 5yr.
Chrome Extensions 1yr.
- 7 years of commercial experience with JavaScript, ECMAScript 6. Experience with responsive layout, web sites, mini applications in JS and SPA in Vue.js.
- 5 years with Vue.js framework (including Vue 3 core principles, Style Guide, Composition API, official documentation of the framework).
- Interacting with API endpoints and other web services.
- SOLID, DRY; UI Kit & Bootstrap, Unit tests (Cypress)
- Projects with WordPress
- Intermediary English
TypeScript
Node.js
React
PostgreSQL
Vue.js
- Computer Engineering degree with a background in software architecture, algorithm design, efficiency analysis, and data organization techniques.
- Interest in low- and high-level programming languages like Zig, Rust, Dart, C. Additional knowledge of Python, Ruby, Go, and PHP.
- Strong experience with code testing (Qase.io) and cloud Terraform Automation and Collaboration (Scalr.com) platforms.
- Over 10 years of full-stack web development experience with expertise in TypeScript, Node.js, and PostgreSQL. React, Vue.js, and Angular for front-end tasks.
Azure Logic Apps 3yr.
Azure Cloud Functions 3yr.
.NET
React
Azure
- Full-stack web developer with more than 10 years of commercial experience.
- Built event-driven integrations using MS stack (APIM + Functions, Logic Apps + Functions) to substitute existing flows written with MuleSoft. 3 years with Azure Logic Apps and Functions; Service Bus, Azure Event Grid, Azure API Management. Was creating event handling and data transformation flows using Azure Logic Apps.
- Has worked on a wide range of projects, including financial remittance systems, medical appointment websites, and payment systems for electronic document exchange services.
- Has experience working with a range of technologies including ASP.NET Core, .NET Core, EF Core, TypeScript, Node.js, Microservices, Kafka, Azure, AWS, Angular, React, Vue.js, and WPF.
- Strong bug-fixing skills and experience with DevOps responsibilities.
.NET
Azure
Azure Logic Apps
Azure Cloud Functions
- Over 10 years of expertise in full-stack .NET development, specializing in C#, ASP.NET Core, Entity Framework, and MS SQL Server across diverse domains, including FinTech, e-commerce, and SaaS.
- Proficient in Azure integration services: Logic Apps, Azure Functions, Service Bus, Event Grid, API Management. Frequently used Logic Apps + API Management + Functions (especially in migrations) for API exposure, workflows, and custom logic.
- Strong background in migrations & integrations (MuleSoft experience and similar). Skilled in API-led, event-driven, and hybrid patterns — connecting internal systems, third-party services, and cloud components (multi-system flows, async processing, background jobs, notifications, legacy modernization to Azure).
- Strong background in implementing billing systems, real-time event-driven architectures, and multi-tenant SaaS platforms with robust role-based access control and audit capabilities.
- Experienced in frontend technologies, including Blazor, AngularJS, TypeScript, and React
- Skilled in applying SOLID principles, design patterns, CI/CD pipelines, unit and API testing (XUnit), and Agile methodologies to ensure maintainable, high-quality software solutions.
Node.js 5yr.
TypeScript 5yr.
PostgreSQL 5yr.
Python 4yr.
- Software engineer with 20+ years of experience specializing in Node.js (TypeScript) and Python, architecting microservices and event-driven systems using Kafka/Redpanda, ClickHouse, and PostgreSQL.
- Official Oracle Contributor, Active community events/meetups organizer, and open source projects contributor
- Proficient in designing scalable APIs with gRPC, tRPC, and Protobuf, implementing CI/CD pipelines with GitLab CI/GitHub Actions, Docker, and Terraform.
- Holds a Bachelor’s degree in Automation and Computer Technologies. Strong background in system design, cloud-native architectures, and observability practices, including structured logging, metrics, and tracing.
Node.js
TypeScript
AWS
React
- Full-stack software engineer with an MS degree in Computer Science;
- Designed and operated event-driven, cloud-native architecture.
- Back-End: Node.js, NestJS, Express (8 years); SQL/NoSQL DBs, performance optimization, data processing (Python), ML pipelines, CI/CD DevOps practices. Wide experience with Databases (MongoDB, PostgreSQL, MySQL, DynamoDB, etc.);
- Front-End: React (including forms, dashboards, admin tools), 6 years.
- Unit and E2E tests (Karma, Jest, Cypress, Playwright)
- Expert in serverless AWS architecture: Lambda functions, asynchronous message queues SQS, RabbitMQ; Ownership from requirements to production in serverless/event-driven B2B systems.
- Built demand forecasting with TimeGPT, TimesFM, TiREX; integrated Python ML pipelines into NestJS via RabbitMQ; implemented an AI chatbot for inventory insights and recommendations (using LangChain principles)
- Developed an AI-powered inventory & demand planning platform for e-commerce merchants; built a multi-tenant CRM for service companies and a real estate platform with direct customer requirements integration.
JavaScript 6yr.
Node.js 5yr.
PostgreSQL 3yr.
Vue.js 2yr.
React 2yr.
- 6+ Years of Software Engineering Experience (full-stack) with scalable architectures, clean APIs, and responsive interfaces. Communication skills and a product mindset. Ownership mentality - comfortable taking a feature from idea to production. Ownership mentality - comfortable taking a feature from idea to production.
- Experience working with AI or LLM-based applications, B2B or enterprise customers, including for fintech and crypto applications using JavaScript, Node, NestJS, React, and PostgreSQL.
- Optimized database interactions and workflows in corporate platforms with AWS Neptune, DynamoDB, Elasticsearch, and Redis, and redesigned test environments.
- Built asynchronous event handling and caching mechanisms with NATS, Redis, and BullMQ for product management and payment systems, improving reliability via message-driven communication. Integrations with multiple payment providers and API gateways, resulting in scalable architectures handling diverse data formats.
- Integrated monitoring tools like Prometheus and Grafana in deployment pipelines using GitLab CI, enabling metrics collection for endpoints and integrations in real-time services.
Python
AWS
Kafka
Apache Airflow
Snowflake
- 8+ years of experience as a Data Engineer, Data QA, and Data Science challenges. - AWS Certified Data Analytics.
- Experience creating and supporting of ELT data pipelines built on Snowflake and DBT
- Warehousing models, and support existing processes/ETL’s (extract/transform/load), functions (in Python/SQL/DBT) in a cloud data warehouse environment using Snowflake, AWS services
- Software developer with good communication and organizational skills.
Azure 5yr.
Python 4yr.
Databricks
Apache Airflow
- 12+ years of experience in IT, with 12+ years in Data Engineering and Data Architecture, including Oracle Databases, Data Warehousing, Big Data, and real-time streaming systems;
- Experience in designing and maintaining enterprise Data Warehouses, leading cloud migration initiatives across Azure, AWS, and GCP;
- Strong architectural expertise in ETL/ELT pipelines, batch/real-time processing, and data governance/quality frameworks;
- Deep knowledge of Big Data ecosystems (Cloudera, Hadoop, Databricks, Synapse Analytics, HDInsight, AWS EMR);
- Skilled in multi-cloud architecture design using Snowflake, DBT, Cosmos DB, Redshift, BigQuery, Athena, and Data Lake solutions;
- Experienced in data streaming and integration with Apache Kafka, Apache Spark, PySpark, and Airflow;
- Expertise in BI and reporting systems with Power BI and Tableau for data visualization and analytics delivery;
- Strong foundation in database administration and security: Oracle EBS R12, RAC/ASM, WebLogic, SOA Suite, ERP systems, database audits, and compliance;
- Certified in Azure Data Engineer, AWS Data Analytics Specialty, Confluent Kafka, Oracle DBA.
JavaScript 4yr.
Vue.js 2yr.
- 3 years of commercial experience, early projects since 2017. (Vue.Js, JavaScript, Chrome extensions)
- Has good knowledge of JavaScript, working with arrays, working with elements, sorting and data algorithms. Good understanding of HTML and CSS.
- Familiar with methodologies, principles, paradigms, and patterns in software development.
- Vuex for state management and Styled Components for styling.
- Rest APIs (Google, NovaPoshta) and Git for version control.
- Tailwind, Figma, and Webpack for UI
- Experienced in using Google Firebase, Cloud Firestore and Authentication.
Node.js 10yr.
• 15+ years JavaScript programming
• Over 10 years in Node.JS programming
• Familiar with React.js
• Experience building highly scalable distributed web applications and browser extensions
• Extensive experience with REST services
• Strong communication and cooperation skills
• Solid experience as a Backend developer
• Fluent in English, written and spoken
• long Term experience in remote work with USA and Europien companies
• Self-directed person, with proven ability to manage goals and deadlines effectively
Haskell 3yr.
Scala 2yr.
Plutus 2yr.
Akka
Cardano
- 3 years of experience in Plutus / Cardano smart contracts developer role (Plutus Core, Plutarch)
- Cardano ecosystem knowledge
- Haskell, Scala, Cabal/Stack, GADTs/Type families, Generics, Servant, lenses, mtl, free monads - senior-level professional
- Functional programming with FRP, Redux, Event sourcing, Category theory
- OOP, OOD, UML, Design patterns, SOLID, DI. TDD, BDD, Unit, functional, and integration testing
- 14 years of experience in software engineering
$100/hr
$8500/month
$8500/month
Python
C
C++
* 25 years in Israel high-tech (Video, Streaming) , 5 years with Cloud Gaming (Electronic Arts)
* Scalable Video Streaming among LEO satellites (research project of Ben Gurion University)
* Cloud Gaming: encoding, decoding, low latency streaming (e.g. RTP/SRT), error resilience etc.
* Video Codecs: Subcontracting with Visionular on improving coding efficiency of its own HEVC
encoder.
* Subcontracting with DSP-IP - military projects
* Video optimization and hevc codec development (Beamr Imaging)
* Python Programming: development automated testing systems (CI), proofs of concept, computer vision with packages cv2 and cvlib.
* Artificial Intelligence: genetics/evolutionary optimization of video codec parameters, facial expressions detection with CNN.
* 360/VR: subcontracting with Texel (texel.live) - tiled streaming Computer Vision: OpenCV (including python cv2).
* NVIDIA/AMD products: evaluation and modification hw encoders: Tesla T4, A40) of NVIDIA and Navi21 of AMD.
* and several technical papers and several technical papers
Node.js 5yr.
React 3yr.
Solidity
NFT
• 15+ years of commercial software development experience
• Solid knowledge of Solidity, C++, JavaScript, TypeScript;
• Deep understanding of blockchain architecture and smart contract logic;
• Cosmos, Tron, Avalanche, Binance Smart Chain, Ethereum dApps;
• Strong skills in developing NFT smart contracts. Support and payload verification;
• NFT Marketplaces (ERC - 721/1155), Crypto Payment Solutions & DeFi Cross Chain Bridges - ERC-20 Tokens, ICO, DEX, Staking, Swapping;
• Highly qualified knowledge of Stripe payment system integration to blockchain data;
• 10+ years experience working with Python;
• 5 years experience working with Node.js;
• Strong abilities with Express;
• Experience working with Docker, and Kubernetes (K8s);
• 3+ years of development experience with React.js.
• No scheduled vacations within the next 3 months;
Bash 10yr.
Shell Scripts 10yr.
MySQL 10yr.
Ansible
Ansible Playbook
- Over 20 years in IT with a master's degree in Cybernetics
- Proficient in Ansible: Extensive experience in deploying and managing Ansible-driven infrastructure, particularly highlighted in roles as SRE/Architect (Aug 2018 – Present) and Senior DevOps Engineer/Lead Sysadmin (Aug 2020 – May 2021), where Ansible was pivotal in scaling a learning platform from 1,000 to over 100,000 students and in key migration projects.
- Expertise in Windows Environments: Demonstrated strong skills in managing Windows environments, especially as an SRE/Architect (Aug 2018 – Present) and CTO (2013 – Mar 2022), involving Windows AD+MSSQL backoffice management and ITIL Service Management framework implementation on Windows platforms.
- Versatile IT Roles with Ansible and Windows: Across various roles including IT Service Manager, Senior DevOps Engineer, and CTO, consistently applied Ansible and Windows technologies in large-scale infrastructure projects and day-to-day operations, showing versatility and depth in these areas.
- Managing the growth of the learning platform from 1,000+ to 100k+ active students
- ITIL v3 Foundations Certificate
- More than 5 years of experience in leading ITIL Service Management capability and implementing end-to-end ITIL Service Management framework
- Strong experience in using ServiceNow and Jira Service Desk for ITSM
- Experienced IT/Telecom Specialist
- UNIX and UNIX-Like OS (FreeBSD, Linux, SunOS, MacOS X) background
- Over 20 years of Windows/windows server family. From NT4.0 /win3.1 up to Server2019. As well as upgrading Up to 15 years with server HW, and 13 years with storage solutions
- Infrastructure problem-solver with a strong view on reliability, performance, and disaster recovery
- Fluent English
MS Dynamics 365
Power Apps
Microsoft Power Platform
Canvas Apps
- IT experience starting in 2015.
- Experience with the full lifecycle of designing, developing, installing, configuring, and maintaining applications on SharePoint 2007/2010/2013/2016/2019 Online. Nintex products (Workflows, Forms)
- Strong knowledge of .NET, C#, ASP.NET, HTML (HTML5), JavaScript, CSS (CSS3).
- Experience with Dynamics CRM, Power Apps, CDS, Power Automate, TypeScript, jQuery, Bootstrap (3, 4), Data Tables, SharePoint libs, ReactJS, React-Redux, Vue.js, Semantic UI.
- Extensive experience with MS Visual Studio 2012/2013/2015/2017/2019, VS Code, TFS, Jira, Git. Android, Windows Phone, Xamarin, Outlook Add-ins, Outlook framework, React Native, Parse Platform, Firebase.
- Upper-Intermediate English
Objective-C 10yr.
iOS 10yr.
C++ 10yr.
Swift 5yr.
- Served as a Senior Software Developer in the Two German Automotive Navigation Projects, focusing on System Team operations as well as Map and Routing domains.
- VPN and Network Filtering Development: Extensive experience developing VPN solutions, including cross-platform engines for KeepSolid’s VPN Lite, and expertise in low-level network filtering, proxies, and handling internet traffic.
- iOS Development Expertise: Over 10 years of hands-on experience with iOS development, including business apps and secure communication tools, with proficiency in Swift and Objective-C.
- C++ Proficiency: Strong background in C++ for developing core network functionalities, optimizing performance, and building cross-platform applications.
- Enterprise Application Development: Skilled in developing enterprise-level applications, including parental-style internet filters and device policy management tools.
- Agile Methodologies: Proven track record of working in Agile Scrum environments, delivering high-quality software with fast iteration and strong collaboration.
- Leadership and Team Collaboration: Experience as a Tech Lead, mentoring teams, and coordinating with stakeholders to resolve issues and implement new features.
- Available to start ASAP
React 6yr.
React Native 2yr.
- 9 years of proven professional expertise in the IT industry;
- Advanced experience in Web Development using JavaScript 7+ years;
- Solid experience in software development using ReactJS and React Native (6+ years); 3 Years with Node.js
- Good experience in Web development using PHP;
- Beginner experience in Web Development using Ruby on Rails;
- Beginner experience in Web Development using Java;
- Upper-Intermediate English
.NET
Azure
C++
React
- Full-stack engineer with 7 years of .NET, MS Azure, and JavaScript.
- Proven achievements include initiating and building a microservice architecture from scratch for data science computations and reducing latency by optimizing CPU-bound calculations.
.NET
ASP.NET Core Framework
- 12+ years of experience in full-stack software development with a strong focus on .NET Core, C#, and Microsoft Azure ecosystem;
- Built complex enterprise applications and scalable microservices architectures using ASP.NET Core, Azure Functions, Docker, RabbitMQ, and MS SQL Server;
- Developed cross-platform web and mobile applications using React, React Native, and Node.js for industries including healthcare, logistics, education, social networking, and B2B platforms;
- Built native apps on Windows, macOS, iOS, and Android with .NET Multi-platform App UI
- Designed and integrated REST APIs and real-time messaging features for high-performance systems;
- Delivered cloud-native solutions with Azure Web Apps, Azure Storage, CI/CD pipelines, and microservice orchestration;
- Led architecture design, team collaboration, and technical mentorship across multiple full-cycle delivery projects;
- Experienced in building customer-centric solutions, data-driven dashboards, and scalable CRM-like platforms.