SFSviatoslav Fedorov
@sviatoslavfedorov
Senior Front-End Developer with 8+ years building performant React/Next.js applications and strong TDD focus.
SpainWhat I'm looking for
I am a Senior Front-End Developer with over eight years of experience specializing in React and Next.js, TypeScript, and test-driven development. I design scalable front-end architectures, implemented core architecture for large-scale projects, and led migrations that measurably improved Time to Interactive.
My work has driven business outcomes: I helped a startup become profitable within its first year, increased newsletter subscriptions by 23.7% through analytics integration, expanded test coverage to 80.8%, and reduced QA and design review times substantially via standardized design tokens.
I mentor engineers, conduct technical interviews, and deliver mission-critical projects ahead of schedule. I value measurable impact, high code quality, and collaborative teams that prioritize user experience and performance.
Experience
Work history, roles, and key accomplishments
Senior Front-End Developer
FlexMade
Jun 2022 - Present (3 years 4 months)
Designed and implemented core architecture for two large-scale projects, delivering first release 4 months ahead of schedule and leading features that helped the startup become profitable within the first year.
Senior Front-End Developer
TGA Digital
Mar 2020 - Jun 2022 (2 years 3 months)
Delivered a mission-critical project two weeks early during COVID-19, securing company stability and a $2M+ client; implemented localization to five languages and mentored developers while improving validation and release speed.
Front-End Developer
Akvelon Inc
Dec 2018 - Mar 2020 (1 year 3 months)
Rewrote a legacy React project to achieve 30% faster load and halve bugs, resolved ~60 critical production errors, implemented lazy loading and Azure deployment reducing latency significantly.
Education
Degrees, certifications, and relevant coursework
Sviatoslav hasn't added their education
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Location
SpainAuthorized to work in
Job categories
Skills
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