wiktor malex
@wiktormalex
I’m a senior full-stack engineer delivering enterprise web apps with React, Node.js, cloud architecture.
What I'm looking for
I’m a Senior Full Stack Engineer with 6+ years of experience delivering enterprise-grade web applications across consulting and agency environments. I specialize in turning complex business requirements into production-ready solutions, with a strong track record of end-to-end delivery.
In my current role at Darly Solutions, I architected and delivered full-stack applications for high-traffic systems, improving delivery efficiency by 30%. I designed scalable backend services with Node.js (improving API response time by 40% under peak load) and built modern UI components using React.js and Tailwind CSS.
I focus on reliability, performance, and security—implementing JWT authentication and role-based access control, introducing structured logging and monitoring, and optimizing frontend rendering to reduce page load time by 25%. I also built CI/CD pipelines with automated workflows, reducing deployment time by 50%, while mentoring 4 junior engineers and improving onboarding time by 35%.
Previously at Infolet and Zaven, I worked across React, Node.js, Vue.js, and Angular, designing REST and GraphQL APIs, refactoring legacy systems, and integrating cloud services on AWS. I’ve strengthened code quality through automated testing and Agile collaboration, and I’m driven by continuous improvement in engineering standards.
Experience
Work history, roles, and key accomplishments
Senior Full-Stack Engineer
Darly Solutions
Apr 2024 - Present (2 years 2 months)
Architected and delivered enterprise full-stack applications, improving delivery efficiency by 30%. Reduced API response time by 40% under peak load, cut deployment time by 50% via CI/CD automation, and improved page load time by 25% through frontend performance optimization.
Full-Stack Engineer
Infolet
Apr 2023 - Apr 2024 (1 year)
Developed enterprise full-stack systems across React, Node.js, and Angular, supporting thousands of daily requests with stable performance. Built REST and GraphQL APIs, improved feature delivery time by 20%, and increased code reliability by reducing production bugs by 30% with automated testing.
Full-Stack Developer
Zaven
Jan 2022 - Aug 2023 (1 year 7 months)
Built and maintained full-stack applications using React, Vue.js, Node.js, and REST APIs for enterprise clients. Implemented GraphQL APIs to reduce redundant network calls, set up CI/CD for faster deployments, and improved frontend rendering performance by optimizing rendering logic to minimize unnecessary re-renders.
Frontend Developer
Mobitouch
Jan 2021 - Jan 2022 (1 year)
Developed responsive frontend applications using React.js, JavaScript, HTML5, and CSS3, translating UI/UX designs into production components. Improved website performance by reducing load time by 20%, maintained cross-browser compatibility, and integrated REST APIs with backend teams.
Education
Degrees, certifications, and relevant coursework
Hokkaido University
Bachelor of Science, Computer Science
2019 - 2023
Bachelor of Science in Computer Science at Hokkaido University from 2019 to 2023.
Tech stack
Software and tools used professionally
Availability
Location
Authorized to work in
Job categories
Skills
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