I am a Front-End Engineer with 3 years of experience building React and TypeScript user interfaces that ship fast, reliable, and accessible. In 2023, I reduced load time by 70% and increased test coverage to 80% within two quarters, enabling 30% more features to reach production. I excel at working with Vite, Redux, Accessibility, REST/GraphQL, and maintaining tight cross-team collaboration. I am passionate about delivering high-quality frontend solutions that enhance user experience and streamline development processes. I am skilled in maintaining and integrating complex JavaScript widgets and have contributed significantly to styled brand-specific interfaces for luxury fashion retailers.

Khahan Mamedov

I am a Front-End Engineer with 3 years of experience building React and TypeScript user interfaces that ship fast, reliable, and accessible. In 2023, I reduced load time by 70% and increased test coverage to 80% within two quarters, enabling 30% more features to reach production. I excel at working with Vite, Redux, Accessibility, REST/GraphQL, and maintaining tight cross-team collaboration. I am passionate about delivering high-quality frontend solutions that enhance user experience and streamline development processes. I am skilled in maintaining and integrating complex JavaScript widgets and have contributed significantly to styled brand-specific interfaces for luxury fashion retailers.

Available to hire

I am a Front-End Engineer with 3 years of experience building React and TypeScript user interfaces that ship fast, reliable, and accessible. In 2023, I reduced load time by 70% and increased test coverage to 80% within two quarters, enabling 30% more features to reach production. I excel at working with Vite, Redux, Accessibility, REST/GraphQL, and maintaining tight cross-team collaboration.

I am passionate about delivering high-quality frontend solutions that enhance user experience and streamline development processes. I am skilled in maintaining and integrating complex JavaScript widgets and have contributed significantly to styled brand-specific interfaces for luxury fashion retailers.

See more

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
See more

Language

English
Advanced
Ukrainian
Advanced
Russian
Advanced

Work Experience

Frontend Engineer at MBUNITY DEVELOPMENT
November 1, 2024 - Present
Maintained a JavaScript sizing widget and integrated it on branded PDPs in under a month, delivering under 500ms compute times and 99.9% uptime with a lightweight implementation. Styled 10+ brand-specific widget variations, helping increase conversion rates by 3–9× and reduce returns by 25–40% for leading luxury fashion retailers in 6 months. Added WCAG 2.2 AA compliance checks and wired event hooks into client analytics dashboards, delivering real-time insights without impacting page speed within 20 weeks.
React Engineer at DDI DEVELOPMENT
November 30, 2024 - July 14, 2025
Configured GitHub CI pipelines, increasing release reliability to 90%, and supported 10+ weekly deployments while onboarding 2 new developers on the project. Delivered a finance app in 8 months, building a component-based React SPA with JWT authentication and 90% test coverage, successfully passing an external security audit. Refactored the internal CV builder from Angular to React, TypeScript, and React Query, reducing page load times from 6.5s to 1.9s and cutting development time by 50%.
Junior Frontend Developer at RUZYM OU
November 30, 2023 - July 14, 2025
Collaborated in a cross-functional team to deliver a Trello-style task app used by 1,000+ daily users. Reviewed PRs and shipped drag-and-drop boards built with React hooks. Implemented secure JWT authentication with silent refresh and route guards, and added Playwright tests for login, CRUD, and drag-and-drop flows, achieving an 80% pass rate in CI. Implemented code-splitting and lazy loading, reducing initial bundle size by 25% and improving First Contentful Paint to 2.8s, enhancing user experience within 3 months.
Intern Frontend Developer at EPAM
February 28, 2022 - July 14, 2025
Earned a spot in EPAM's 40-hour React/TypeScript internship and in 8 weeks delivered with the team an e-commerce SPA with Hooks, Context and a reusable Bootstrap component kit. Reached Lighthouse 80+ scores and full PWA status while working with a Scrum team that ran daily stand-ups, sprint demos, and Git-based reviews to keep work on track.
Frontend Engineer at MBU NITY Development
January 1, 2024 - Present
Maintained a JavaScript sizing widget and integrated it into branded PDPs within a month, delivering under 500ms compute times and 99.9% uptime using a lightweight implementation. Styled 10+ brand-specific leading luxury fashion retailers in six months. Added WCAG 2.2 AA compliance checks and wired event hooks into client analytics dashboards, delivering real-time insights without impacting page speed in 20 weeks.
React Engineer at DDID Development
January 1, 2024 - August 5, 2025
Onboarded two new developers onto the project. Delivered test coverage and successfully passed an external security audit. Refactored the internal CV builder by migrating it from Angular to React, TypeScript, and React Query, reducing page load times from 6.5s to 1.9s and cutting development time by 50%.
Junior Frontend Developer at Ruzyme OU
January 1, 2023 - August 5, 2025
Collaborated in a cross-functional team to deliver a Trello-style task app used by 1,000+ daily users. Reviewed PRs and shipped drag-and-drop boards built with React hooks. Implemented secure JWT authentication with silent refresh and route guards. Added Playwright tests for login, CRUD, and drag-and-drop functionality. Implemented code-splitting and lazy loading, reducing initial bundle size by 25% and improving First Contentful Paint to 2.8 seconds within 3 months.
Intern Frontend Developer at EPAM Systems
February 28, 2022 - August 5, 2025
Earned a spot in EPAM's 40-hour React/TypeScript internship and delivered an e-commerce SPA with Hooks, Context, and a reusable Bootstrap component kit within 8 weeks. Achieved Lighthouse scores of 80+ and full PWA status. Worked in a Scrum team with daily stand-ups, sprint demos, and Git-based reviews to keep work on track.

Education

Bachelor's at O.M. Beketov National University of Urban Economy in Kharkiv
September 1, 2018 - June 30, 2022
Bachelor's in Computer Science at O.M. Beketov National University of Urban Economy in Kharkiv
September 1, 2018 - June 1, 2022
Front-end Pro at Hillel IT School
February 1, 2021 - May 1, 2022
DevOps Stack Developer at Hillel IT School
February 1, 2021 - December 1, 2021

Qualifications

Front-end Pro
November 1, 2021 - May 31, 2022
DevOps Stack Developer
February 1, 2021 - December 31, 2021

Industry Experience

Software & Internet, Financial Services, Retail, Professional Services, Education, Healthcare, Transportation & Logistics