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.
Java
Java EE
Spring Boot
Hibernate
C/C++/C#
...
- 10+ years of experience in software development, developing web and enterprise applications using Java / J2EE, Spring Boot, and Hibernate technologies. - He has developed and implemented commercial products using modern technology and supported existing value-added services (VAS) systems. Has experience in the customization of PLM /CAD systems for the needs of the enterprise. He built solutions to integrate with external systems and 3PP. Maintenance of work VAS voice products. - Location: Ukraine - Available: ASAP
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Seniority Expert
Location Kyiv, Ukraine
.NET
React
Angular
Vue.js
...
- 9+ years of experience in designing, building, and maintaining .NET-based applications across various industries, from sports federations to healthcare and corporate infrastructure. - Proven ability to deliver scalable, high-performance web and back-end systems using C#, ASP.NET Core, Entity Framework, and Azure for cloud solutions. - Skilled in frontend technologies such as React.js, Vue.js, Angular, and HTML5, with a focus on building responsive, dynamic user interfaces that integrate seamlessly with back-end APIs. - Experienced in managing database schemas, optimizing queries, and implementing cloud-based data solutions using Azure technologies like Azure Table Store, Azure WebApps, and Azure Cognitive Search. - Demonstrated leadership in providing code reviews, offering constructive feedback to peers, and leading feature demos for customers and clients. - Strong communication skills with customers, providing technical assistance and collaborating to define project requirements and resolve issues.
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Seniority Senior
Location Lviv, Ukraine
Figma
HTML
CSS
Remote Work Fit
Design systems
...
I am an experienced UI/UX Designer with a focus on Figma, HTML and CSS. I have solid expertise in creating complex design systems and user-friendly interfaces for various digital products.In my 2+ years of designing user focused interfaces, I have gained experience in carrying out user research, creating wireframes & prototypes, coming up with responsive designs and working with cross-functional teams.I am academically backed with a BSc in Marketing from the University of Nigeria, with additional training in UI/UX Design from Dev and Design HQ and Genesys learnable.
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Seniority Middle
Location Enugu, Nigeria
Data Analysis
Excel
QuickBooks
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Engineer with in-depth knowledge in accounting principles, statistical analysis, and technology tools. Notable for their expertise in QuickBooks, MS Excel, and SPSS for financial and data analysis tasks. Proven track record in full-cycle accounting, budget forecasting, financial reporting, and optimization of financial operations through dynamic pricing models and statistical forecasting. Demonstrated ability to improve operational efficiency and decision-making in various roles, including public sector planning and private sector data analysis. Strong foundation in tax compliance, financial accounting, and performance reporting. High proficiency in data analysis, auditing, budgeting, and financial planning, supplemented with skills in Adobe Creative Suite and Canva for creative design and digital marketing.
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ASP.NET
C#
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- A Software Engineer with over 10 years of development experience in the IT industry; - Most of experience is related to the .NET platform and C# language, on both client and server-side development; - Solid experience working with cross-application integrations, Web API, and WCF Services; - Well-versed in release management on IIS and Azure; - Strong knowledge of SQL; - Experience in working with Dynamics 365 and Salesforce CRMs; - Advanced English;
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Seniority Architect/Team-lead
Location Lviv, Ukraine
PHP
JavaScript
Next.js
Laravel
React
...
An adept Full-Stack Developer with over 10 years of experience, specializing in creating robust web applications using front-end and back-end technologies. Holds a Master's degree in Computer Applications with a focus on software development for automated systems. Proven expertise in JavaScript, React, Next.js, Redux, Thunk, jQuery, PHP, Laravel, and various UI technologies, including MUI, HTML5, CSS3, along with MySQL and AWS services. Demonstrated ability to integrate third-party APIs and ensure optimal application performance. Well-versed in agile methodologies and version control using Git. Has a track record of successful project execution in collaborative team settings as well as independent roles, marked by strong problem-solving skills and attention to detail.
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Seniority Expert
Location Zaporizhzhya, Ukraine
bubble.io 3yr.
JetAdmin 2yr.
.NET Core
JavaScript
TypeScript
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- 5 years with Low-code/No-Code platforms: JetAdmin (2 years), bubble.io (3 years), Appsmith, SaltCorn including dashboards for sales and marketing, automation. - A software engineer with 5+ years of experience in backend and frontend development, focusing on .NET, Angular, React. - Focus on Data Science/Artificial Intelligence, ML, NLP, Time Series Forecasting & Analysis - GCP/Microsoft/AWS cloud services. - Master's degree in Data Science in progress.
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Seniority Middle
Location Pakistan
.NET
C/C++/C#
SQL
...
Dynamic software engineer with a robust engineering background, transitioning from construction to software development. Over four years of problem-solving in design engineering, augmented by C# programming proficiency and a track record of successful project completion. Expertise in .NET, Entity Framework, and SQL, with recent focus on full-stack development projects like Nimble and GameOverflow. Exhibits a keen understanding of software development practices, adept at using modern technologies and methodologies. Recognized for optimizing performance, enhancing process efficiency, and meeting crucial deadlines.
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Seniority Junior
Location Sofia, Bulgaria
NFT 5yr.
Smart Contract
FDD
CI/CD
SOLID
...
Accomplished Blockchain Developer with over 5 years of expertise in designing and implementing advanced applications with a focus on blockchain technology, smart contract and dApp development. Strengths include hands-on experience with PoS/PoA sidechains, Ethereum, Binance, Tron, and a plethora of ERC standards, backed by robust skills in Golang, JavaScript, Solidity, and cloud technologies. Proficient in fostering innovative database design, API development, and server management, which are further enhanced by a seasoned track record in deploying blockchain solutions on AWS and GCP. Distinguished by participation in high-profile projects like decentralized exchanges and NFT platforms, showcasing not only technical prowess but also effective collaboration with cross-functional global teams and deployment of CI/CD pipelines.
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Seniority Senior
Location Indore G.P.O., India
TypeScript
JavaScript
Node.js
Express
NestJS
...
An accomplished Senior Backend Engineer with a solid 6-year track record in the tech sector, specializing in APIs, databases, and system optimization. Expertise in software architecture and Agile development using key technologies such as Node.js (NestJs, ExpressJs), React Native, TypeScript, and JavaScript. Proficient in CI/CD with CircleCI, containerization with Docker, and cloud deployment on AWS and GCP. Demonstrable success in leading development projects and teams, evidenced by the delivery of scalable and performant web/mobile applications and innovative software solutions. Holds a Bachelor's degree in Business Information Technology from the Technical University of Kenya.
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Seniority Senior
Location Nairobi, Kenya
Node.js 4yr.
Architecture and Design Patterns 1yr.
Spring model-view-controller (MVC) framework
Go
...
Senior Software Engineer with over 6 years of backend development expertise, specializing in Node.js, Java Spring Boot, and serverless architectures. Significant experience in building scalable solutions on AWS, leading technically challenging projects in the banking sector at Boubyan Digital Factory and Nomo Bank. Proven track record of implementing best practices and standards in coding, testing, and optimizing performance. Strong foundation in computer science with a Bachelor's in Structural Engineering from the German University in Cairo. Proficient in Go, Redis, and event-driven programming, coupled with Agile and Scrum methodologies. Multilingual with fluency in English, German, and Arabic.
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Seniority Senior
Location Cairo, Egypt
TypeScript 7yr.
JavaScript 7yr.
Azure 3yr.
React 3yr.
...
Proven Full-Stack Engineer with over 7 years of experience in building robust, secure, and scalable systems. Has a strong background in team leadership and project management, ensuring timely delivery within scope and budget. Holds a Master's degree in Computer Engineering complemented by advanced technical skills across a myriad of technologies including AWS, TypeScript, JavaScript, React, Node.js, and Microservices. Experienced with a variety of databases such as SQL, MongoDB, and DynamoDB, and tools like Docker, Kubernetes, and Terraform for DevOps. Demonstrates a keen ability to integrate third-party services and has a solid foundation in continuous integration and delivery practices.
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Seniority Senior
Location Munich, Germany
C/C++/C# 1yr.
Entity Framework 1yr.
React
...
Software engineer with a focused background in backend development, skilled in C#, .Net Core, Entity Framework, and front-end technologies including MVC and JavaScript. Proven track record of successful project delivery, reflected in the implementation of advanced features such as two-factor authentication, JWT tokens, and real-time communication using SignalR. Demonstrates strong analytical capabilities with experience in financial analysis during internship at Deloitte. Adept at working within the full software development life cycle, from initial design to testing, evidenced by an OOP project that integrated all four main principles and boasted an 80% unit testing coverage on back end. Educated at Queen Mary University with expected first-class honors in Economics and Finance, which complements technical abilities with robust analytical skills. A competitive triathlete, embodying resilience and dedication, essential qualities for high-performance environments.
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Seniority Junior
Location Sofia, Bulgaria
Salesforce 6yr.
...
Software engineer with 6+ years' expertise in the Salesforce Enterprise Platform, including Sales Cloud and Salesforce CPQ. Proficient in platform configuration, process automation, and security setup. Adept at Apex programming, LWC, and has contributed to a variety of projects as a solution architect and developer. Holds certifications such as Salesforce Administrator, Platform Developer I & II, and others. Versatile with integrations including SAP, QuickBooks, and AWS S3. Recognized for advanced technical skills, engineering acumen from a B Tech in Computer Science, and a track record of delivering complex solutions in high stakes environments.
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Project Management
...
- Project manager with over 4 years of management experience, successfully sourced, negotiated, and closed tens of projects. - Worked as a sales manager, account manager, project manager, and manual QA. - Proven track record in developing task backlogs, organizing development into sprints, and coordinating sprint goals with cross-functional teams to ensure timely delivery of projects. - Skilled in planning and conducting daily/weekly meetings, tracking progress, and ensuring adherence to project deadlines. - Expertise in implementing quality assurance measures, including preparing and managing bug reports, overseeing issue resolution, and incorporating customer feedback to enhance product functionality and performance.
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Seniority Middle
Location Spain
C#
...
- Over 4 years of experience developing and deploying complex web and mobile applications across diverse industries, focusing on integrating modern front-end and back-end technologies. - Proficient in front-end and back-end development, utilizing frameworks such as Blazor WebAssembly, ASP.NET Core, and modern JavaScript libraries to build robust and user-friendly applications. - Skilled in deploying and managing applications on cloud platforms, including AWS and Azure, with a solid background in using tools like GitHub Enterprise and SonarQube for code management and quality assurance. - Competent in integrating cloud services with existing applications, managing serverless solutions, and ensuring scalable and reliable infrastructure. - Experienced in building and optimizing APIs using RESTful and OData architectures and implementing front-end solutions with Blazor and .NET.
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Seniority Middle
Location Ukraine
Architecture and Design Patterns
Black-box Testing
SDLC
STLC
API testing
...
Software engineer with over 3 years of expertise in software testing and QA, specializing in black box testing for web applications and robust knowledge of SDLC and STLC. Proficient in API testing using Postman and Swagger, and experienced in mobile application testing. Demonstrates proficiency in integrating automation testing within CI/CD pipelines, leveraging Selenium WebDriver for automated regression testing. Versed in defect identification and management using tools such as JIRA and Zephyr. Capable of performing various types of testing including but not limited to functional, integration, regression, smoke, and ad-hoc testing, as evidenced by a history of uncovering and reporting software bugs. The engineer's technical acumen and practical experience are complemented by strong communication skills.
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Seniority Middle
Location Indore G.P.O., India
Figma
Adobe Photoshop
...
- Has extensive experience as a Lead Designer, managing multiple projects simultaneously while mentoring junior designers. - His portfolio includes designing complex interfaces for industries like cryptocurrency platforms, AI-powered iOS apps, legal tech services, and B2B platforms. He's responsible for setting UX/UI design direction, ensuring high design standards, and collaborating with developers to ensure smooth implementation. - His work emphasizes cross-device optimization, user engagement through analytical tools, and a focus on seamless performance across mobile and desktop platforms. - Design Tools: Proficient in Figma, Photoshop, Illustrator - Animation: Skilled in web design animation and beyond
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Seniority Expert
Location Kosice, Slovakia
PHP
NestJS
microservices architecture
TypeScript
React
...
Senior Full Stack Developer with a Master’s in Computer Science and a depth of experience in front/backend technologies across multiple domains. Practical knowledge of Python, Django, Next.js, NestJS, and a robust foundation in PostgreSQL. Proven capability in leading development projects, optimizing database schemas, and leveraging CI/CD pipelines with Docker and Kubernetes. Skilled in Agile methodologies, project management, and UI/UX design paired with a substantial background in IoT solutions, showcasing versatility and technical prowess. Recognized for streamlining operations, reducing costs through automation, and advancing retail technology platforms.
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Seniority Senior
Location Frankfurt, Germany
C/C++/C# 1yr.
ASP.NET Core Framework 1yr.
Entity Framework 1yr.
AWS Security Groups 1yr.
HTML
...
Proactive software engineer with practical experience in C#, ASP.NET Core, Entity Framework, and JWT Security. Adept at full-stack development, illustrated by projects like a virtual wallet system and a gaming forum. Proven expertise in utilizing tools like Swagger, Zabbix, and Cloudinary, with particular success in integrating external APIs and optimizing cloud engineering workflows. Fluent in English and intermediate in German, with solid analytical and conflict resolution skills underpinning a distinctive ability to enhance team and customer experiences. Holds a Master’s in Software Engineering in-progress, with a foundation rooted in a Bachelor's in Software and Internet Technologies.
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Seniority Junior
Location Dobrich, Bulgaria
DigitalOcean 7yr.
Team Leadership 3yr.
FDD
MS SQL Server Management Studio
seo
...
- Over 7 years of experience in Digital Marketing, 3 of which are in the Trading Ecosystem as a Director Marketing/Team Lead Marketing - Skilled in using major tools like Facebook Ads, LinkedIn Ads, Google Analytics, GTM, and Data Studio, as well as newer platforms like TikTok Ads. Demonstrated success in managing large budgets, leading cross-functional teams, and launching products in the US and European markets, primarily in the EdTech and FinTech sectors. - Proficient in SEO, comprehensive analytics, and the creation of data-driven marketing sales funnels, specializing in formulating digital promotion strategies that enhance lead generation and customer segmentation for SaaS products. - Upper-Intermediate English
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HTML
CSS
Ant Design
Python
PHP
...
A result-driven software engineer with a background in Agricultural and Environmental Engineering, and extensive experience in customer service roles. Versed in both front-end and back-end development, and adept at using React.js, Python, PHP, and JavaScript alongside HTML and CSS. Demonstrates a solid understanding of software development practices with practical experience in using CRM, Freshdesk, Paystack, and SEO tools. A proven track record in handling customer communications and feedback, complemented by excellent interpersonal skills and an ability to foster team collaboration. The engineer brings a strong problem-solving ethos, and is proficient in MS Office applications, with strengths in multi-tasking and adapting to new technologies.
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Seniority Junior
Location Ibadan, Nigeria
Python 2yr.
FDD
AWS ML (Amazon Machine learning services)
Unix
...
A seasoned software engineer with a strong background in Computer Engineering from Cairo University, the engineer brings both a deep understanding of theoretical principles and a rich hands-on experience in multiple software domains. Key strengths lie in web and mobile development, embedded systems, and machine learning, underscored by expertise in Python, Django, React, and AWS among other technologies. The profile showcases a proven track record of designing, coding, and maintaining sophisticated software solutions, notably in the healthcare sector with enterprise software contributions. This engineer is recognized for a systematic approach to analysis, design, and implementation across the software development life cycle. Revered personal projects such as an embedded system for CCTV face recognition signify a blend of innovation and practicality. With professional fluency in English and Arabic and having completed an IBM Big Data Engineer Certification, the candidate stands out for versatile skill sets and distinguished technical mastery.
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Seniority Senior
Location Giza, Egypt
Node.js
PHP
JavaScript
jQuery
React
...
With over 4 years of professional experience in software development, the engineer is proficient in full-stack technologies including Node.js, React, and PHP, complemented by substantial expertise in database management systems like MySQL and MongoDB. Demonstrated history of successful project execution illustrated by roles in the development of complex systems such as a RESTful chat system and an online car auction platform. Strong educational foundation with a Bachelor's in Computer Engineering and importantly, an impressive track record in leading projects, innovation in deployment of applications, and mentoring team members. Technical acumen is enriched by adeptness in LAMP stack, modern JavaScript frameworks, version control using GIT, and the implementation of cloud services and server management.
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Seniority Senior
Location India
Go 5yr.
PHP 5yr.
Symfony 5yr.
MySQL 5yr.
MongoDB 5yr.
...
Software engineer with 5 years of professional experience in application development using languages and frameworks such as Golang, Symfony, and PHP. Demonstrated expertise in Go, PHP Frameworks, MySQL, Mongo, and front-end technologies including JavaScript, jQuery, and Ajax. Proficient in frameworks like Echo, Symfony 2, and Laravel, and familiar with web servers like Apache. Holds a BE in Information Technology from RGPV Bhopal and is well-versed in both Windows and Linux environments. Proven track record of project management skills with a focus on research, modular design, and hands-on implementation. Instrumental in developing payment gateway APIs, internal APIs, community websites, and performing database migration with a knack for optimizing SDLC and software development practices. Capable of leading teams, mentoring peers, and efficiently resolving technical challenges.
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Seniority Senior
Location Indore, India
JavaScript
TypeScript
Express
Node.js
Angular
...
A senior software developer with over 3 years of expertise in MEAN stack development, skilled in JavaScript, TypeScript, and advanced web technologies including Angular 2x-13x, Ionic 5x-6x. Demonstrated experience in full-stack development, proficient in both frontend and backend technologies with a keen understanding of ExpressJs, Node.js, Angular, and React. Strong background in cloud services like AWS and GCP, and in employing version control with GIT/GITHUB. Established track record in working with databases such as MySQL and MongoDB, and integrating payment gateways like RazorPay, PayPal, and Stripe. Computer Science graduate from Jabalpur Engineering College with a firm foundation in DBMS, programming languages, and machine learning. Proven ability in leading the development lifecycle of software applications, optimizing for performance and scalability, and contributing to high-quality, reusable code.
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Seniority Middle
Location India
Java 6yr.
JavaScript 3yr.
C++ 3yr.
Go 2yr.
...
Software engineer with extensive experience in the design, development, and testing of web services and desktop applications across fintech, telecom, e-commerce, banking, insurance, and education sectors. Technical expertise includes RESTful API development, client-server architecture, and internet-protocols, with proficiency in programming languages such as Golang, Java, JavaScript, PHP, and C++. Strong background in both the Software Development Life Cycle (SDLC) and in software test engineering, excelling in various testing methodologies including functional, GUI, cross-browser/platform, and integration testing. Adept in agile and test-driven development practices, the candidate brings a solid engineering education with a specialized computer science focus and hands-on experience with AWS, Google Cloud Platform, IBM Cloud, and Azure. Known for a problem-solving approach, efficient communication within teams, and contributing to QA through strategy, automation, and root cause analysis.
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Seniority Senior
Location Chernihiv, Ukraine
Ruby on Rails 5yr.
Vue.js
AngularJS
...
Accomplished Senior Full-Stack Software Engineer with a focus on Ruby on Rails development, boasting extensive experience in building scalable web platforms and mobile applications compliant with HIPAA regulations. Possesses a strong command of front-end and back-end technologies including Ruby on Rails, Vue.js, React.js, Angular.js, PostgreSQL, MongoDB, and expertise with various APIs and integrations. Proficient in implementing sidekiq for efficient background job processing and skilled in deploying applications on Heroku along with AWS services management. Holds a Master’s Degree in Software Development from Cherkasy Engineering and Technological Institute, underpinning a solid theoretical foundation with hands-on experience in the end-to-end software development lifecycle. Demonstrated leadership capabilities in architecting robust solutions and leading technical teams. Brings over a decade of industry experience across healthcare, financial, and social media marketing sectors.
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Android 7yr.
React Native 4yr.
JavaScript 4yr.
...
- 7 years of software development - 4 years of experience with React Native - 7 years of experience with Android - Significant experience with CI/CD pipelines - Available to start ASAP - Upper-Intermediate English
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Seniority Senior
Location Egypt
Node.js
React
.NET
React Native
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A seasoned Senior Software Engineer with a robust background in Computer Science from Menofia University, boasting extensive experience in backend and mobile solutions. Demonstrates deep expertise in cloud-native technologies, microservices architectures, and Agile project management methodologies. Strong track record in leading development teams, executing full SDLC, and elevating product quality through rigorous testing practices, including unit and integration tests. Advanced proficiency in a suite of technologies, including Node.js, React Native, AWS Services, Docker, and K8s, coupled with a commitment to best practices in software engineering, notably in database optimization, API design, and DevOps techniques.
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Seniority Senior
Location Alexandria, Egypt
Azure
...
- Сertified Azure DevOps Engineer with more than 20 years of experience in software and database development (С# and VB.NET) - 5+ years of experience in managing distributed development teams. I have participated in more than 15 projects, mostly of middle and large size, and have been involved in all stages of the release cycle, including analysis, design, coding, deployment, development and testing. I am versed in supporting new applications and developing new features for existing complex applications. - Skilled in refactoring, migration, and performance optimization, as well as in extending the functionality and maintaining the existing features. - Open-minded and goal-oriented team player with strong interpersonal and communicational skills. - Can learn quickly under tough deadlines. - Constantly looking for opportunities to improve my skills and knowledge in system design and algorithms.Industries: Logistics and transportation, banking and finance, information technology and services, professional services, computer software.
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Seniority Middle
Location Kyiv, Ukraine
React 7yr.
PHP 7yr.
Node.js 5yr.
...
- Software Developer with over 7 years of experience - Experience with React over 7 years - Experience with React Native over 3 years, which included migration from Java to React Native and building a medical platform - Experience of work in mixed teams - Upper-Intermediate English
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Seniority Middle
Location Nigeria
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