Available to hire
Hi, I’m Viktar Zamulka, a Senior Frontend Engineer with 8+ years of experience building scalable, secure and testable web applications. I specialize in React, TypeScript, frontend architecture, accessibility, and collaborating with distributed teams.
I enjoy turning complex requirements into robust UI solutions and have a track record of delivering accessible, SOC2-aligned patterns, mentoring juniors, and leading UI library consolidation across teams. I’ve worked across fintech, media, and enterprise tech, integrating legacy AngularJS and modern frameworks to drive measurable improvements.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Language
English
Fluent
Polish
Intermediate
Work Experience
Senior Frontend Engineer at VISA
January 1, 2024 - November 4, 2025Built secure, scalable UI components used by 10K+ internal users. Reduced incident reports by 25% via accessibility audits & tests. Unified code style & components, onboarding faster by ~30%. Mentored 2 juniors; one promoted in 3 months. Optimizations led to ~7% dev cost savings.
Frontend Engineer at J.P. Morgan Chase
November 30, 2023 - November 30, 2023Contributed to finance web apps in a global team. Improved accessibility (WCAG 2.1). Supported SOC2 readiness. Introduced GraphQL patterns; cut bugs by 30%.
Frontend Engineer at Noumena
August 31, 2023 - August 31, 2023Built finance tools for 10K+ freelancers. Modularized 20+ UI components. Reduced cold start time by 25%, improved session length.
Frontend Engineer at Oxagile
February 28, 2023 - February 28, 2023Developed OTT platform for 13+ clients. Integrated Kaltura video stack. Reduced QA cycle by 40% via automated tests.
Frontend Developer at Forte Group
October 31, 2020 - October 31, 2020Migrated 3 projects to React/TS; defect rate -30%. Built 25+ reusable UI modules; time-to-feature -40%.
Frontend Engineer at Oxagile
January 1, 2021 - February 1, 2023Delivered OTT apps for 13+ clients. Integrated Kaltura. Reduced QA cycle by 40%. Maintained AngularJS admin panels.
Frontend Developer at Forte Group
April 1, 2018 - December 1, 2020Migrated legacy systems to React/TS. Built 25+ reusable modules. Supported AngularJS legacy code.
Education
BSc Web Development at University of London
January 11, 2030 - February 6, 2026MSc in Engineering at Goldsmiths, University of London
January 11, 2030 - February 6, 2026BA in Management at Goldsmiths, University of London
January 11, 2030 - February 6, 2026Qualifications
MSc in Engineering
January 11, 2030 - November 4, 2025BA in Management
January 11, 2030 - November 4, 2025Single Page Web Applications with AngularJS
January 11, 2030 - February 6, 2026Industry Experience
Software & Internet, Financial Services, Professional Services, Media & Entertainment
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Hire a Front-End Developer
We have the best front-end developer experts on Twine. Hire a front-end developer today.