Jevgenijs L.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Jul 17, 2026.

I am an automation expert and full stack developer with long term experience building high quality software for enterprise level companies. For years I have worked on complex systems used by global organizations such as Invitae SupplyShift and SwissRe. My focus has always been reliability clean architecture and predictable delivery. I take ownership of my work communicate clearly and make sure every feature is built with long term stability in mind. At Quantumsoft I worked as a fullstack developer involved in large scale projects for Invitae and SupplyShift. I designed reusable frontend architectures built internal frameworks and improved the entire development process. I helped translate product requirements into technical plans and supported communication across teams. My work included improving automated testing snapshot testing screenshot testing unit tests regression testing and raising overall code quality. I also refined the build process introduced modern tools and strengthened documentation practices. Many of the workflows I introduced are still part of the team’s process today. At CTCo I served as a lead developer on long running projects for SwissRe. I managed a frontend team provided technical planning and drove UI development across several large applications. I delivered new features improved legacy codebases and supported the migration of older systems from ZK framework to AngularJS. My role included mentoring developers reviewing architecture decisions and ensuring that product expectations were met on time. The work covered JavaScript CSS SASS GWT Java Angular and Node and involved deep collaboration with design and backend teams. Additional experience that strengthens my work Building internal UI component libraries and shared design systems used across multiple products Leading performance optimization efforts including reducing bundle sizes improving caching and removing bottlenecks Helping teams transition to modern development practices including CI pipelines automated tests and code quality tools Refactoring legacy codebases into modular maintainable structures without disrupting production Introducing analytics tooling and monitoring solutions to help product teams understand user behavior and system health What I bring to every project Clear communication and reliability Strong architectural thinking with a focus on long term maintainability Ability to take high level ideas and convert them into stable technical solutions Clean scalable and future ready code A habit of solving problems calmly logically and consistently If you want someone experienced dependable and capable of elevating both your product and your development process I would be glad to join your project and help you move it forward. Tech Stack Overview CRM Automation: PreciseFP, ShareFile, WealthBox, Zapier, N8N, GHL, Hubspot, Make, Monday Frontend Development: React, Next.js, AngularJS, Vue.js, Svelte, TypeScript, JavaScript, Redux, Zustand, Recoil, RxJS, Webpack, Vite, Babel, D3.js, Chart.js, Three.js, Framer Motion I build fast, interactive, and visually refined interfaces with modern architecture and best practices. Backend Development: Node.js, Express, Nest.js, Django, Flask, FastAPI, Spring Boot, Java, Python, Go, PHP, Laravel, WordPress, MySQL, PostgreSQL, MongoDB, Redis, GraphQL, Prisma, REST APIs, Microservices, Elasticsearch I design and deliver reliable, secure, and maintainable backend systems of any scale. UI and UX Design Figma, Adobe XD, Photoshop, Illustrator, Sketch, InVision, Zeplin, Miro, Canva I turn ideas into smooth, intuitive, and user focused experiences. UI and Styling: Tailwind CSS, MUI, Chakra UI, Bootstrap, Ant Design, SCSS, SASS, Styled Components, HTML5, CSS3, Responsive Design, Accessibility WCAG I create clean, consistent, and accessible interfaces for all devices. Cloud, DevOps, and Automation: Python, TypeScript, Playwright, Selenium, Cypress, Robot Framework, REST API automation, Postman, PyTest, Jest, GitHub Actions, GitLab CI, Jenkins, Docker, AWS basics, k6, Locust, Git, Sentry, Grafana, AI automation with OpenAI API, Test Architecture including POM and Modular Design I automate workflows, improve development speed, and ensure system stability. Testing and Quality: Jest, Mocha, Chai, Cypress, Playwright, Selenium, React Testing Library, Postman, SonarQube I prioritize clean code, strong testing practices, and long term maintainability. Additional Expertise: WebSockets, JWT, OAuth2, Web3.js, Ethers.js, Solidity, Blockchain integration, SEO, Google Analytics, Segment, Performance Optimization, Jira, Agile Scrum I bring flexibility and deep knowledge across modern web development, automation, and emerging technologies.