Artur Nesterenko

Senior frontend developer | 6+ years of experience

Frontend developer · Tray.aiWarsaw, Poland🇺🇦 Ukrainian

Joined Oct 2026

Frontend developer with 6 years of commercial experience, working in teams ranging from 2 to 30 members
within engineering organisations of 100+ engineers. Have 1 year of team-leading experience. Built a full
development lifecycle: from gathering product owner requirements to establishing a fully automated release
process with high test coverage, top page speed score and CI/CD. Designed and implemented a no-code
frontend builder, enabling non-technical users to create and customize interactive web pages. Built the login,
cross-domain authentication and security-compliance features of an enterprise AI orchestration / iPaaS platform
(3× Gartner Magic Quadrant Visionary) used by Cisco, Airbnb, GitHub and DocuSign.

Experience

Frontend developer
Tray.ai
Feb 2026 - Present · 9 months · Remote · Full time
• Cut circular dependencies in an Nx monorepo (18 apps, ~200 libs) from 471 to 53 (−89%), reducing CI time from ~42 to ~13 min (−69%) and flaky CI failures from ~33% to under 9% of runs
• Delivered Log Masking - an enterprise security feature hiding PII and credentials in execution logs of a platform running 1T+ processes a year, with admin-only reveal and full audit trail
• Built a new authentication app (login, SSO, OAuth2 consent) and moved the entire platform to a new domain with 0 forced re-logins, unifying sign-in for 2 products including a newly launched product line
ReactTypeScriptReduxNxWebpackJestTesting LibraryPlaywrightStorybookshadcn/uiREST APIOAuthJWTSingle Sign-OnGitHub ActionsLaunchDarklyAmazon S3
Frontend developer
Pikt
Jun 2024 - Feb 2026 · 1 year 8 months · Remote · Full time
- Developed a no-code website builder used by over 4 million private businesses across all sectors in France
- Raised the average Google Lighthouse/PageSpeed score of generated websites from 64.7 to 88.9
- Consolidated 5 domain-related projects into a unified mono-repo, streamlining dependency management
- Boosted reuse of the homemade component library by 75% through the mono-repo consolidation
Web PerformanceMonoreposLow-CodeNext.jsTypeScriptReduxFastAPITurborepoSassLighthouse