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
Operations and Cloud
Mobile Application
Digital Platforms
Blockchain
Design and Creative
Quality Engineering and Testing
Delivery Management and Analytics
Desktop Software
Writing and Translation
Marketing and SEO
Scripting and Automation
Embedded Systems
Low-Code
GameDev
Industrial Engineering
AEM
Java
React
Experienced engineer with 11 years of experience in the following areas:
- Adobe AEM Lead Developer (AEM 5.6 Lead Developer Certified)
- Java, JavaScript (React), Vanilla JS
- AEM Component creation (UI as well as server-side), including both reusable and page components with best in standard coding practices
- AEM DAM (Digital Asset Management)
- Servlet, Job Scheduler, Search Functionality, Email API, Sightly
- Workflow implementation
- MSM-Creation of multilingual sites using live copy
- Selective Dispatcher cache invalidation
- Unit testing frameworks, such as JUnit and Mockito.
- Source control management tools, such as Apache Subversion, Git
- Well-versed with a technical understanding of Extjs, Apache sling, and OSGi, needed for the development of an AEM project, starting from scratch.
- Involved in Design, Coding, Testing, Code review, and performance tuning of code and queries.
Senior
India
$40/hr
$6500/month
$6500/month
JavaScript 4yr.
Cypress
Cucumber
Postman
- 10+ years in software quality engineering with priority in automation testing and SDET;
- Programming languages: Javascript, Typescript, Ruby, Java (Basic);
- SQL Server SQL/TSQL, MS SQL Server 2005/2012, PostgreSQL/MySQL/MongoDB, MariaDB;
- Methodologies include Agile, Scrum, TDD, and BDD;
- Projects with large software service companies, SMBs and startups. Domains include CRM, banking, healthcare, insurance, and trading. Business oriented projects, working as team member and independent engineer ( USA, France, and UK teams), open source projects;
- Created test documentation/test plan; Performing functional, integration, e2e, API, system testing of product;
- Automation with Cypress, and CI/CD maintenance using tools like Jenkins, CircleCI, Docker, Github Actions, GitlabCI, and AWS cloud infrastructure;
- QA tools include Cypress, Cucumber, Jenkins, Postman, Selenium and Capybara;
- Holds a Master's Degree in Network Engineering and Economics;
- ISTQB Certification. AWS and Cisco security trainings.
- Availability and start: full-time, in two weeks
Senior
Kyiv, Ukraine
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;
Senior
Ukraine
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
Senior
Ukraine
Tableau 7yr.
- 7 years of commercial experience with Tableau
- 8 years of experience as a BI Consultant, providing data visualization expertise in Tableau, Power BI, Python, SQL
- Created visually compelling and interactive Tableau dashboards for clients in the real estate domain in the US
- Upper-Intermediate English
Senior
Pakistan
AEM
- 14 years of AEM experience in design, development, integration, and delivery of small to large-scale enterprise-level applications.
- An experienced solution architect with a keen interest in business domains, hands-on in technology-based solutions, and a strong focus on delivering measurable value.
- Industry Experience: Vast industry experience covering aviation, telecommunications, media, finance, retail, mutual funds, and services sectors.
- Technical skills: Best-in-class analytical and problem-solving skills with a track record of on-time and within-budget delivery.
- Soft skills: Ability to build strong personal and professional relationships using excellent interpersonal skills.
- E-commerce and AEM Expertise
- Certificated Adobe Experience Architect, Components Developer, ManagerAreas of expertise include:
- Digital transformations including Content Management Systems (CMS) like Adobe Experience Manager (AEM/CQ5).
- Application/Software development right from inception to implementation
- Implementation strategies, planning, and execution
- Agile methodologies such as continuous integration and continuous delivery, features/domain-driven development, extreme programming
- Worked with esteemed customers like ANZ Bank, Old Mutual Group (South Africa), Ford, Farmers Insurance, Aegon Insurance, LaQuinta, Cummins, and AT&T in consulting roles
- Fluent English
Senior
Melbourne, Australia
$55/hr
$8000/month
$8000/month
Python
Django
Flask
- 5 years of experience in the IT industry as a Python Engineer
- Proficient in using technologies such as Django DRF, Flask, Pandas, BeautifulSoup, SQLAlchemy, Asyncio, Flask + Marshmallow, Apscheduler, Jinja, Quip API, Docker, Nginx, Amazon MWS API, Amazon SP-API, Google API, and Telegram API;
- Strong in refactoring, bug-fixing, and working with Python, JavaScript, Django, Django Rest Framework;
- Skilled in developing faceted search and matching algorithms using ElasticSearch;
- Experienced in PDF generation and importing from various formats;
- Developed web applications, API interfaces, and automated scripts for data transformation;
- Previous experience includes working as a Python developer focused on data scraping for Amazon, eBay, and Walmart products in dropshipping projects;
- Also worked as a C# developer on various projects, specializing in web development, scraping, and parsing data;
- Upper-Intermediate English;
- Available ASAP
Senior
United States
$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
Expert
Haifa, Israel
System Architecture
JavaScript
Rust
Go
Java
* Accomplished Solution Architect, Technical manager with 13+ years of progressive experience in architecture design and a comprehensive understanding of project management and software development.
* Orchestrating process implementations, ensuring tasks are completed within strict deadlines and budget, and delivering tangible business benefits.
* Operational expertise includes Strategic Planning, Process Optimization, Change Management, Risk Management, Compliance and Governance, Requirement Analysis, Delivery Management, Process Improvement, Client Engagement and Retention, Business Analysis, A/B analysis, Product strategy developing, Report generating, and Compiling result reports.
* Leadership and Management: Team building, Stakeholder Management, and Conflict Resolution.
Architect/Team-lead
Kyiv, Ukraine
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.
Junior
Dnipro, Ukraine
Delphi 20yr.
React
Node.js
- Software Engineer with over two decades of experience, specializing in system design, and system integration (System Design, Technical Leadership, System Integration, Scalability, Security, Communication, Documentation);
- Strong abilities with React.js for building, interactive web applications;
- Experienced in Java, Spring Boot, and creating microservices;
- Skilled in Node.js for backend development;
- More than 20+ years of experience with Delphi, Deep knowledge with different versions of Delphi to 10.2;
- Experience with various localisations and Delphi UIs;
- Expert in various programming languages including C++, JavaScript, and Python;
- Experienced in database management with Oracle, MySQL, and PostgreSQL among others (Data Modeling Database Management, Normalization and Denormalization, Data Integrity, Data Warehousing, ETL, SQL and Query Optimization, Database Design, Stored Routines and Packages, Data Backup and Recovery, Data Migration, Web Scraping);
- Experience in technical leadership in various domains such as enterprise software, finance, and healthcare.
Expert
Ukraine
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
Expert
Belarus
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
Expert
Odesa, Ukraine
Tableau 4yr.
SQL 4yr.
Power BI 4yr.
Spotfire 1yr.
Python
- 5 years of commercial experience with PowerBI and Tableau
- 4 years of commercial experience with SQL
- Prepared a comprehensive analysis of the US real estate market with Spotfire
- Assessed data quality from sources that contained tens of thousands of customer and transaction data, by using SQL in Azure SQL Database
- Employed data-driven techniques to develop RFM analysis, and create interactive dashboards for customer trend visualization and high-value business proposals
- Upper-Intermediate English
Middle
Marseille, France
SAP
- Experienced SAP Engineer with a diverse background in SAP development, data management, application support, and auditing;
- Strong expertise in ABAP programming, including report development and debugging;
- Demonstrated experience in system customization, gap analysis, and addressing business requirements;
- 6+ years of experience in SAP (PM, MM, WM), customizing, LSMW tools, VBA code, and ABAP;
- 4+ years of relevant experience in SAPUI5, Fiori, BTP, S/HANA, CDS, ODATA;
- Familiar with SAP FI, CO, and SD;
- 9 years of experience as an auditor;
- Upper-Intermediate English.
Senior
Lviv, Ukraine
SAP
MM
SD (Stable Diffusion)
- 12+ years of experience in the implementation and support of MM/SD functionalities;
- MM consultant to 3 SAP R/3 implementations, SD consultant to 2 SAP R/3 implementations;
- Integration specialist with external systems: 3PL - WMS, Web Application, with client accounting systems;
- Full life cycle Implementation Projects: 5 and additional integration projects;
- Primary Module: MM - Material management;
- Secondary Module: SD - Sale and Distribution, LE - Logistic Execution;
- Technical skills: ABAP, Data Dictionary, Search Objects, ABAP Query, BAPI, BADI, RFC, Smart Forms, LSMW, Batch Input, Standard IDOC (for integration with external systems), VBS Script, VBA, API in VBA, MS, Access, SQL
- Industry exposure: Chemicals, Retail, Electronics Consume;
- Training: Class Instructor on MM/SD Modules, Preparation of training scenario/documentation.
- Advanced English
- German proficiency level – B2 written and B1 spoken
Senior
Lviv, Ukraine
Data Analysis 4yr.
AWS ML (Amazon Machine learning services) 4yr.
Neural Networks
Data Mining
Business Analysis
- Data Scientist with 4+ years of experience specializing in delivering insights and solutions using analytics, machine learning, and data science across diverse industries.
- Profound technical expertise with Python, utilizing libraries such as pandas, numpy, TensorFlow, and Keras, and deploying solutions with tools like Docker and FastAPI.
- Successfully led data science projects focusing on market analytics, computer vision, and content moderation, demonstrating a strong background in ETL pipelines, predictive modeling, and deploying RESTful services.
- Holds a Master's in Computer Science, augmented with certifications from Google Cloud and DataCamp, and is proficient in implementing ML methodologies, including NLP, CV, and time series analysis.
- Experienced in RDBMS such as MySQL and PostgreSQL, cloud platforms like AWS and GCP, and has practical knowledge of software development life cycles and agile methodologies.
- Fluent in English and Ukrainian, embodying strong multidisciplinary team leadership, evident in the management of complex projects and innovative solution development.
Middle
Ternopil, Ukraine
XML 10yr.
XSLT 10yr.
- 11+ years of experience in IT
- 10+ years of experience with XSLT/XML
- Writing, testing and maintaining XSLT code that applies mapping on XML and output JATS XML & HTML
- Familiar with many processing engines like Saxon (Java) - libxslt (C) - Python’s package
- Upper-intermediate English
- Available ASAP
Senior
Cairo, Egypt
Kubernetes
AWS
DevOps
Python
- 24 years of professional expertise in the IT industry;
- 2+ years of work experience with Kubernetes;
- 6+ years of experience with Docker;
- Solid skills in working with AWS Cloud Platform;
- Experience with blockchain projects on Ethereum and Polkadot;
- Deep knowledge of building and supporting monitoring and alerting systems using Grafana and Prometheus;
- Good understanding of work with Terraform.
- Skilled in designing, building, and improvement of the IT infrastructure;
- Experienced in the implementation of solutions on Microsoft\ Apple \ and Unix platforms
- Deep understanding of building virtual and cloud environments;
- Experience in building corporate backup systems;
Senior
Cherkasy, Ukraine
Java 5yr.
Spring Boot 5yr.
microservices 5yr.
Azure DevOps 3yr.
Go 1yr.
Senior Software Engineer with 6+ years in backend development, specializing in Java (8-17) and Golang. Proven expertise in microservices architecture, event-driven systems, and cloud-native solutions using Kubernetes, Docker Swarm, and AWS. Skilled in implementing Temporal workflows, SAGA pattern compensations, and observability stacks (ELK, Grafana, Prometheus). Experienced in CI/CD pipelines, infrastructure-as-code, and legacy system modernization. Holds a Bachelor in Software Engineering with strong foundations in software development lifecycle, testing, and DevOps practices.
Senior
JavaScript 8yr.
React 8yr.
Node.js 8yr.
TypeScript 3yr.
Ext JS 3yr.
Senior FullStack Engineer with 8+ years in eCommerce and software development, proficient in JavaScript, TypeScript, React.js, Node.js, Next.js, and Express.js. Skilled in cloud infrastructure using AWS (EC2, S3, Lambda), containerization with Docker and Kubernetes, and database optimization for MongoDB and PostgreSQL. Experienced in CI/CD pipelines (Jenkins, GitLab CI), Agile methodologies, TDD, and microservices architecture. Holds a Bachelor's degree in Computer Science from Tallinn University.
Senior
Poland
React 7yr.
Node.js 7yr.
Express 7yr.
MongoDB 7yr.
I am a Senior Full Stack Developer with over 10 years of extensive and deep experience designing, developing, and deploying high-performance web applications and enterprise-level platforms. My expertise spans the entire technology stack, allowing me to deliver robust, scalable, and maintainable solutions from concept to production.
Architect/Team-lead
Ohio, United States
Python 4yr.
Django REST framework 4yr.
RESTful API 4yr.
FastAPI 4yr.
Flask 4yr.
Engineer with a Computer Engineering degree (GPA 86/100) and 4+ years of experience specializing in backend development using Python frameworks including Django, DRF, FastAPI, and Flask. Proficient in designing scalable RESTful APIs, asynchronous systems with Celery and Redis, and database optimization with PostgreSQL, MySQL, and MongoDB. Experienced in deploying containerized applications via Docker and cloud platforms like AWS and Google Cloud. Skilled in integrating AI/ML models (TensorFlow, PyTorch) for NLP and predictive analytics, and mentoring developers on clean code, testing, and best practices within Agile environments.
Senior
Azerbaijan
Python 5yr.
Flask 5yr.
FastAPI 3yr.
Django REST framework 3yr.
Senior Python Developer with 5+ years specializing in scalable backend systems, RESTful APIs, and AI-driven data pipelines using FastAPI, Django, and Flask. Proven expertise in LLM integration (OpenAI, Deepgram, Vapi) and prompt engineering for real-time AI workflows. Experienced in microservices architecture, cloud DevOps (AWS, Docker, CI/CD), and data processing with Pandas and NumPy. Holds a BSc in Electrical Computer Engineering and currently pursuing MSc, with a strong foundation in software development best practices and system design.
Senior
C/C++/C# 17yr.
OpenGL 17yr.
Qt QML 7yr.
Senior Software Engineer with over 20 years of experience in embedded systems, full-stack development, and 3D graphics across medical devices, aerospace, and gaming industries. Expert in C/C++, Qt/QML, OpenGL (including Safety Critical SC), GLSL, and Python, with strong proficiency in Agile methodologies, Azure DevOps, Jira, and automated testing frameworks. Proven track record in developing complex real-time systems, optimizing performance, and leading cross-functional teams. Holds a B.S. in Computer Science with a focus on Simulation and Graphics.
Senior
United States
PHP 4yr.
JavaScript 4yr.
Symfony 4yr.
React 3yr.
TypeScript 1yr.
Software engineer with over 4 years of experience in full-stack development, specializing in PHP, Python, C#, .NET, Golang, JavaScript, and TypeScript. Holds a Master’s degree in Business Computing, Software Engineering, and AI, with strong expertise in frameworks such as Symfony, Laravel, Django, React, and Vue.js. Skilled in cloud infrastructure deployment (AWS, OVH, Docker, Kubernetes), API design (REST, OpenAPI, GraphQL), and performance optimization using Elasticsearch and Redis. Proficient in software architecture principles including SOLID, TDD, and design patterns, with hands-on experience in SaaS, ERP, CRM, IoT, and mobile applications. Demonstrated ability in business process automation and long-term project maintenance across diverse domains.
Middle
Andoharanofotsy, Madagascar
JavaScript 2yr.
TypeScript 2yr.
NestJS 1yr.
Ext JS 1yr.
React 1yr.
Software engineer with extensive experience in scalable backend development using NestJS, Kafka, and BullMQ, coupled with frontend expertise in Next.js and React. Skilled in designing optimized RESTful APIs, complex data querying with MySQL, MongoDB, and ClickHouse, and implementing microservices architectures. Proficient in TypeScript, JavaScript, and advanced DevOps tools including Docker, AWS EC2, and Jenkins CI/CD. Demonstrated ability to build high-performance platforms with real-time data processing, pagination, and responsive UI, supported by strong open-source contributions and problem-solving proficiency evidenced by 250+ DSA problems solved.
Intern
Gandhinagar, India
React
Ext JS
SOLID
Node.js
Python
Engineer with 8 years in Web3 and AI/ML development, specializing in decentralized applications and scalable web platforms using React, Next.js, Laravel, and EVM-based blockchain tech. Proficient in Solidity, Python, Node.js, and Rust, with expertise in smart contracts, Web3.js, and AI integration. Experienced in Agile/Scrum methodologies, CI/CD pipelines, and remote collaboration. Holds a Computer Science degree from University College London and has led projects for Ocean Protocol and major streaming platforms using Next.js for high-performance, SEO-optimized frontends.
Senior
Denver, United States
Node.js 2yr.
NestJS 2yr.
RESTful API 2yr.
GraphQL 1yr.
Web3.js 1yr.
Experienced Backend Developer with a strong foundation in Computer Science and over 3 years in fintech, Web3, and real estate domains. Proficient in TypeScript, NestJS, PostgreSQL, MongoDB, and blockchain tools such as Web3.js and Ethers.js. Led major projects including Bloomvest V2 migration to PostgreSQL and scalable API design, Trilla's real estate fractional ownership platform, and high-performance blockchain indexers. Skilled in modular architecture, real-time communication via WebSockets, and secure multi-role backend systems, delivering robust, scalable decentralized and centralized applications.
Architect/Team-lead
Abuja, Nigeria
C/C++/C# 2yr.
.NET Core 2yr.
Entity Framework 2yr.
ASP Web API 1yr.
.NET Core Web API 1yr.
Experienced .NET Developer with over 4 years in full-stack development, proficient in C#, .NET Core, ASP.NET MVC, Web API, and Entity Framework. Skilled in front-end technologies including HTML, CSS, jQuery, AJAX, and foundational React. Expertise in Microsoft Dynamics 365 (Navision) integrations using Codeunits, XMLports, and SOAP, along with advanced T-SQL database modeling and optimization. Demonstrated ability in developing middleware solutions for retail POS systems and backend services for real estate applications. Holds a Bachelor of Science in Computer Science and has applied software engineering principles to deliver scalable ERP and reporting solutions.
Middle
Quezon City, Philippines
VoIP 2yr.
SIP 2yr.
Python 1yr.
Django REST framework
Software engineer with 3+ years of experience specializing in VoIP technologies including SIP trunking, WebRTC, and voice API integration. Holds a Bachelor's in Electrical and Computer Engineering and pursuing MS in Electrical, Electronic, and Communications Engineering. Proven expertise in designing scalable microservices architectures, asynchronous processing, and implementing CI/CD pipelines with infrastructure-as-code. Skilled in Python, Django, REST/GraphQL APIs, and full-stack development delivering real-time, reliable voice and web platforms.
Middle
Islamabad, Pakistan
React 10yr.
TypeScript
Node.js
Vue.js
AWS
- Full-Stack Engineer with 10 years of experience building and scaling web and SaaS products across fintech, edtech, martech, crypto, energy, and AI-driven domains.
- Skilled in JavaScript, TypeScript, and Python, with hands-on experience in frontend development using React, Next.js, and Vue.js, and backend development with Node.js, NestJS, Express, and Python-based frameworks.
- Designed and implemented system architectures for complex platforms, including distributed systems, microservices, real-time applications, and API-driven products with PostgreSQL, MongoDB, Redis, ClickHouse, and Elasticsearch.
- Led full-cycle development of high-load platforms such as crypto trading systems, communication automation tools, educational video platforms, and SaaS products, from requirements and architecture to production launch and scaling.
- Integrated AI and machine learning components into production systems using OpenAI APIs, LangChain, FAISS, PyTorch, and other AI tooling for personalization, automation, and content generation.
- Built and maintained infrastructure using Docker, Kubernetes, Terraform, and CI/CD pipelines, working extensively with AWS and Google Cloud environments.
- Experienced in technical leadership, including frontend architecture ownership, mentoring engineers, hiring, and organizing engineering teams across multiple projects.
Senior
Valencia, Spain