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Oleksandr
Frontend Engineer
- Age:
- 25 years
- City of residence:
- Kyiv
- Ready to work:
- Kyiv, Remote
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OLEKSANDR KOLOMIIETS
Frontend Engineer
Kyiv, Ukraine (Remote) | [open contact info ](look above in the "contact info" section) | [open contact info ](look above in the "contact info" section) |
Telegram: t.me/sashakolomiiets | [open contact info ](look above in the "contact info" section)
SUMMARY
Frontend Engineer with 4+ years of commercial experience building large React and TypeScript web
apps for multi-tenant SaaS and ERP products. Owns features end to end, from requirements and
estimates to tests and release.
SKILLS
Languages: JavaScript, TypeScript, HTML, CSS
Frontend: React, React Router, Redux, Zustand, React Hook Form, Zod, TanStack Table/Virtual,
Tailwind CSS, SASS, i18next, PWA
API & Data: GraphQL, REST API, Apollo Client, React Query
AI Tools: Claude Code, Cursor
Testing & Tools: Vitest, Storybook, Vite, Turborepo (monorepo), Git
WORK EXPERIENCE
Frontend Engineer — Ronis | Feb 2023 – Present
Owned core OMS/WMS modules of a multi-tenant eCommerce and logistics SaaS (MENA)
Led features end to end: requirements, estimates, implementation, tests, release
Used Claude Code and Cursor daily to delegate tasks through to a PR and review results
Built access control for 7 roles + POS with field-level rules in 40+ areas
Delivered 12+ external integrations: Shopify, Magento 2, Salla, Noon, MS Dynamics 365
Developed monitoring UIs for integration onboarding, data mapping and resync
Cut build time from 1m20s to 10s (~8x) by moving the monorepo to Rolldown-Vite
Eliminated UI freezes in large tables via virtualization (TanStack Virtual)
Implemented OpenAI-powered translation, speeding up the rollout of new locales
Introduced Vitest and Storybook tests for the ERP frontend
Reviewed pull requests and mentored junior developers
Redesigned a Magento 2 store and migrated two UK retail brands to Shopify
Intern (React.js / Node.js) — Lambda Team | Jan 2023 – Feb 2023
Built a React finance dashboard on a bank API: spending categories, budgets, alerts
Designed Node.js REST APIs with webhooks, rate limiting and secure token storage
EDUCATION
Bachelor's Degree in Economics — National University of Kyiv-Mohyla Academy | 2018 – 2022
LANGUAGES
English — Upper-Intermediate (B2) · Ukrainian — Native
Frontend Engineer
Kyiv, Ukraine (Remote) | [
Telegram: t.me/sashakolomiiets | [
SUMMARY
Frontend Engineer with 4+ years of commercial experience building large React and TypeScript web
apps for multi-tenant SaaS and ERP products. Owns features end to end, from requirements and
estimates to tests and release.
SKILLS
Languages: JavaScript, TypeScript, HTML, CSS
Frontend: React, React Router, Redux, Zustand, React Hook Form, Zod, TanStack Table/Virtual,
Tailwind CSS, SASS, i18next, PWA
API & Data: GraphQL, REST API, Apollo Client, React Query
AI Tools: Claude Code, Cursor
Testing & Tools: Vitest, Storybook, Vite, Turborepo (monorepo), Git
WORK EXPERIENCE
Frontend Engineer — Ronis | Feb 2023 – Present
Owned core OMS/WMS modules of a multi-tenant eCommerce and logistics SaaS (MENA)
Led features end to end: requirements, estimates, implementation, tests, release
Used Claude Code and Cursor daily to delegate tasks through to a PR and review results
Built access control for 7 roles + POS with field-level rules in 40+ areas
Delivered 12+ external integrations: Shopify, Magento 2, Salla, Noon, MS Dynamics 365
Developed monitoring UIs for integration onboarding, data mapping and resync
Cut build time from 1m20s to 10s (~8x) by moving the monorepo to Rolldown-Vite
Eliminated UI freezes in large tables via virtualization (TanStack Virtual)
Implemented OpenAI-powered translation, speeding up the rollout of new locales
Introduced Vitest and Storybook tests for the ERP frontend
Reviewed pull requests and mentored junior developers
Redesigned a Magento 2 store and migrated two UK retail brands to Shopify
Intern (React.js / Node.js) — Lambda Team | Jan 2023 – Feb 2023
Built a React finance dashboard on a bank API: spending categories, budgets, alerts
Designed Node.js REST APIs with webhooks, rate limiting and secure token storage
EDUCATION
Bachelor's Degree in Economics — National University of Kyiv-Mohyla Academy | 2018 – 2022
LANGUAGES
English — Upper-Intermediate (B2) · Ukrainian — Native
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The candidate's resume is posted at https://www.work.ua/resumes/20765167/