Available to hire
Hi, I’m Anna Shymanovich, a Senior Frontend Developer with 5+ years of experience in React, Next.js, TypeScript, and JavaScript. I have a strong full-stack foundation (ASP.NET Core, Node.js) and a track record of delivering zero-bug production stability by rebuilding life-critical modules and leading a cross-functional team to ship an across-project UI Kit.
I excel in remote freelance environments, mentor junior developers, and focus on scalable architectures, code quality, and performance. I’m actively seeking world-wide remote contractor roles and eager to bring high-impact frontend solutions to your team.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Language
English
Fluent
Russian
Fluent
Work Experience
Senior Frontend Developer (Contract) at Efficiently – Productivity Partner that provides tools to increase business efficiency
April 1, 2025 - November 1, 2025Led the setup, development, and automated testing of a cross-project responsive UI Kit (pnpm library), reducing duplicate code by 30% and accelerating feature delivery by up to 35% across product teams. Mentored junior developers and led a 4-person frontend team, managing task estimation, planning, and distribution, increasing team productivity by 20% and ensuring consistently high delivery quality. Introduced Storybook-driven development, standardizing UI components and cutting UI-related bugs by 40%. Proactively clarified requirements with BAs and designers before development, reducing rewrite and requirement-related defects by 35%.
Senior Full-Stack Developer at Itransition
June 1, 2021 - April 1, 2025Re-engineered the product’s high-impact and failure-prone modules – including life-critical core logic and PDF generation – into scalable, fully tested architectures, eliminating 100% of related issues and delivering 18+ months of zero-bug stability in production. Executed a full migration to TypeScript and introduced ESLint and Prettier, reducing runtime errors by 30% and significantly enhancing code quality, consistency, and maintainability. Built a fake-based test data framework, cutting test writing time by 50% and increasing test coverage from 35% to 65%, lowering regressions by 25%. Optimized frontend performance by reducing bundle size by 30%, increasing page load speed by up to 50% and boosting Lighthouse scores across core pages by 20 points. Led frontend code reviews, preventing issues early and cutting post-merge bugs by 25%.
Senior Frontend Developer (Contract) at Efficiently – Productivity Partner
April 1, 2025 - November 1, 2025Led the setup, development, and automated testing of a cross-project responsive UI Kit (pnpm library), reducing duplicate code by 30% and accelerating feature delivery by up to 35% across product teams. Mentored junior developers and led a 4-person frontend team, managing task estimation, planning, and distribution, increasing team productivity by 20% and ensuring consistently high delivery quality. Introduced Storybook-driven development, standardized UI components, and cut UI-related bugs by 40%. Proactively clarified requirements with BAs and designers before development, reducing rework and requirement-related defects by 35%.
Senior Full-Stack Developer (Contract) at ITransition – Top-rated software engineering company
June 1, 2021 - April 1, 2025Re-engineered the product’s high-impact and failure-prone modules – including life-critical core logic and PDF generation – into scalable, fully tested architectures, eliminating 100% of related issues and delivering 18+ months of zero-bug stability in production. Executed a full migration to TypeScript and introduced ESLint + Prettier, reducing runtime errors by 30% and significantly enhancing code quality, consistency, and maintainability. Built a faker-based test data framework, cutting test writing time by 50% and increasing test coverage from 35% to 65%, lowering regressions by 25%. Optimized frontend performance by reducing bundle size by 30%, increasing page load speed by up to 50%, and boosting Lighthouse scores across core pages by 20 points. Led frontend code reviews, preventing issues early and cutting post-merge bugs by 25%.
Senior Frontend Developer (Contract) at Efficio
April 2, 2025 - November 2, 2025Led the setup, development, and automated testing of a cross-project responsive UI Kit (npm library), reducing duplicate code by 30% and accelerating feature delivery by up to 35% across product teams. Mentored junior developers and led a 4-person frontend team, managing task estimation, planning, and distribution, increasing team productivity by 20% and ensuring consistently high delivery quality. Introduced Storybook-driven development, standardizing UI components and cutting UI-related bugs by 40%. Proactively clarified requirements with BAs and designers before development, reducing rework and requirement-related defects by 35%.
Senior Frontend Developer (Contract) at Itransition
June 1, 2021 - April 2, 2025Re-engineered the product's high-impact and failure-prone modules (including life-critical core logic and PDF generation) into scalable, fully tested architectures, eliminating 100% of related issues and delivering 18+ months of zero-bug stability in production. Executed a full migration to TypeScript and introduced ESLint + Prettier, reducing runtime errors by 30% and significantly enhancing code quality, consistency, and maintainability. Built Faker-based test data generation to cut test writing time by 50% and improve data realism; test coverage rose from 35% to 65%, lowering regressions by 25%. Optimized frontend performance by reducing bundle size by 30%, increasing page load speed by up to 50%, and boosting Lighthouse scores across core pages by 20 points. Led frontend code reviews, preventing issues early and cutting post-merge bugs by 25%.
Senior Frontend Developer (Contract) at Itransion
June 1, 2021 - April 1, 2025Reengineered the product’s high-impact and failure-prone modules – including life-critical core logic and PDF generation – into scalable, fully tested architectures, eliminating 18+ months of zero-bug stability in production. Executed a full migration to TypeScript and introduced ESLint + Prettier, reducing runtime errors by 30% and significantly enhancing code quality, consistency, and maintainability. Built a faker-based test data infra, cutting test writing time by 50% and improving data realism; increased test coverage from 35% to 65%, lowering regressions by 25%. Optimized frontend performance by reducing bundle size by 30%, increasing page load speed by up to 50%, and boosting Lighthouse scores across core pages by 20 points. Led frontend code reviews, preventing issues early and cutting post-merge bugs by 25%.
Senior Frontend Developer (Contract)
April 1, 2025 - November 1, 2025Led the setup, development, and automated testing of a cross-project responsive UI Kit (npm library), reducing duplicate code by 30% and accelerating feature delivery by up to 35% across product teams. Mentored junior developers and led a 4-person frontend team, managing task estimation, planning, and distribution, increasing team productivity by 20% and ensuring delivery quality. Introduced Storybook-driven development, standardizing UI components and cutting UI-related bugs by 40%. Proactively clarified requirements with BAs and designers before development, reducing rework and requirement-related defects by 35%.
Senior Full-Stack Developer
June 1, 2021 - April 1, 2025Reengineered the product’s high-impact, failure-prone modules—including life-critical core logic and PDF generation—into scalable, fully tested architectures, eliminating 100% of related issues and delivering 18+ months of zero-bug stability in production. Executed a full migration to TypeScript and introduced ESLint + Prettier, reducing runtime errors by 30% and significantly enhancing code quality, consistency, and maintainability. Built a Faker-based test data infrastructure, cutting test writing time by 50% and increasing test coverage from 35% to 65%, lowering regressions by 25%. Optimized frontend performance by reducing bundle size by 30%, increasing page load speed by up to 50%, and boosting Lighthouse scores across core pages by 20 points. Led frontend code reviews, preventing issues early and cutting post-merge bugs by 25%.
Education
Bachelor’s Degree in Computer Science and Software Engineering at Belarusian State University of Informatics and Radioelectronics
January 11, 2030 - January 1, 2020Bachelor's Degree in Computer Science and Software Engineering at Belarusian State University of Informatics and Radio Electronics
January 11, 2030 - January 1, 2020Bachelor's Degree in Computer Science and Software Engineering at Belarusian State University of Information and Radio Electronics
January 11, 2030 - January 1, 2020Bachelor’s Degree in Computer Science and Software Engineering at Belarusian State University of Informatics and Radio Electronics
January 11, 2030 - January 1, 2020Bachelor's Degree at Belarusian State University of Informatics and Radio Electronics
January 11, 2030 - January 1, 2020Qualifications
Industry Experience
Software & Internet, Professional Services, Media & Entertainment
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Hire a Front-End Developer
We have the best front-end developer experts on Twine. Hire a front-end developer in Minsk today.