Andrii

ANDRII SOVTUS
Frontend Engineer | React | Next.js | TypeScript
Ivano-Frankivsk, Ukraine | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section)
[open contact info](look above in the "contact info" section) | English: Upper-Intermediate | 4.5+ years commercial experience

PROFESSIONAL SUMMARY
Frontend Engineer with 4.5+ years of commercial experience building and modernizing React and Next.js applications with TypeScript.
Strong in frontend architecture, performance optimization, data-heavy interfaces, code review, mentoring, and technical estimation.
Experienced coordinating small cross-functional teams and working closely with PM, CTO, Backend, QA, Design, and DevOps.

CORE SKILLS
Frontend: React, Next.js, TypeScript, JavaScript, Vite, HTML5, CSS3, SCSS
State & Data: Redux, Redux Toolkit, Zustand, MobX, Recoil, RTK Query, REST API, WebSocket, Socket.IO, react-window
UI & Forms: Material UI, Ant Design (AntD), MUI Charts, Tailwind CSS, styled-components, react-hook-form, Yup, i18n
Testing: Playwright, Cypress
Backend: Node.js, NestJS, MySQL, SQL
Tools: Git, GitHub, Docker, Firebase, Vercel, Husky, Prettier, Day.js, Moment.js
AI-assisted: Claude, OpenAI Codex, GitHub Copilot

PROFESSIONAL EXPERIENCE
Frontend Developer | Forbus Tech 07/2023 - Present
Ivano-Frankivsk, Ukraine | Remote / Office
Large product ecosystem with 5 major frontend applications plus 3 smaller products.
• Worked as the most experienced frontend engineer across 5 major frontend applications and 3 smaller products, owning complex features
and contributing to architectural decisions.
• Modernized the frontend platform by migrating multiple applications from Create React App to Vite and consolidating shared code into a
monorepo, reducing duplication and cutting build time by approximately 3x.
• Built complex calculators for profit and other business indicators, as well as data-heavy interfaces with large tables, advanced filters, and
virtualization for efficient rendering.
• Optimized WebSocket and state-management flows, reducing unnecessary React renders and improving real-time client performance.
• Implemented real-time-env based runtime environment configuration and JSON-config-driven UI variants, allowing multiple designs and
product versions to reuse shared application logic.
• Analyzed and adapted date-picker internals from a major UI library to implement custom product-specific behavior.
• Maintained cross-browser compatibility and responsive/adaptive behavior across production applications; introduced Playwright end-to-
end testing into local workflows with Husky.
• Performed code reviews, mentored developers, estimated large initiatives, and coordinated Frontend, Backend, Design, QA, and
Automation QA; participated in business-logic discussions with PM and CTO.
• Worked directly with DevOps on releases and infrastructure-related tasks; also handled selected Node.js/NestJS tasks, scripts, and MySQL
queries when needed.
• Built several small projects from scratch with AI-assisted development using Claude, OpenAI Codex, and GitHub Copilot for architecture,
implementation, refactoring, and documentation.

ANDRII SOVTUS | Frontend Engineer
PROFESSIONAL EXPERIENCE - CONTINUED
Frontend Developer | Expletech 06/2022 - 07/2023
Ivano-Frankivsk, Ukraine | Office
Outsource / Outstaff
• Built and maintained responsive React applications from scratch, collaborating with Backend, QA, Design, and stakeholders.
• Implemented REST API integrations, complex forms, dashboards, adaptive layouts, cross-browser interfaces, and data-driven functionality.
• Worked on multiple commercial products, taking ownership of features from estimation through delivery.
• Redesigned and improved existing products, resolved production issues, and maintained code quality in team-based development
workflows.

SELECTED PROJECTS
NDA Project - Large confidential product ecosystem with real-time functionality, complex calculations, high-volume data tables, filters,
configurable UI, and performance-focused frontend architecture.
KnotAPI - Merchant and payment connectivity platform with pixel-perfect UI, API integration, and responsive/adaptive development.
JanusAI / Tender Automation - AI-driven tender automation platform: new functionality, API integration, redesign, and business-logic
collaboration.
High Tech Catalog - Freelance - Built the project from scratch, including estimation, planning, technical requirements, implementation, and
independent delivery.

EDUCATION & LANGUAGES
Bachelor's Degree in Computer Software Engineering - Vasyl Stefanyk Precarpathian National University, 2021-2025
English - Upper-Intermediate | Ukrainian - Native