Seeking a full-time, fully remote Frontend, Lead Frontend, or Fullstack role at a company with an engineering culture that values clean architecture, design systems, and AI-assisted workflows. I bring experience owning product architecture, mentoring engineers, and building high-performance web applications — and I'm looking for a team where I can do the same.
Looking for a job
Mykhailo Y.
@mike_qa_engineer
QA Engineer with over 5 years in web and mobile automation and manual testing with web development background.
UkraineWhat I'm looking for
I’m a QA Engineer with 5+ years of experience with web and mobile apps across AI SaaS, FinTech, EdTech, Blockchain MusicTech and LegalTech platforms. The most recent is Detector,io and EssayPro, a platforms serving 1.5M+ users where I wrote automation tests and tested high-traffic CRM systems and cabinets for more than 20 user roles and implemented analytics and experimentation using GTM, Mixpanel and GrowthBook.
Deep expertise in testing React, Next.js (SSR/SSG), Angular and TypeScript. Comfortable to take ownership and collaborating closely with cross-functional product teams in Agile (Scrum/Kanban) environments. Fluent in AI-assisted development workflows (Cursor, Claude Code, Copilot)
Experience
Work history, roles, and key accomplishments
DE
Senior Frontend Engineer
Develux
Feb 2025 - Apr 2026 (1 year 2 months)
Architected and scaled EssayPro (1.5M+ users) across React/Next.js and Angular in 6 domains, hitting Lighthouse scores of 95-100. Led migration to an Nx monorepo, cutting PR volume by 50% and build times from 20 to 10-14 min. Integrated headless CMS (Strapi, Bettermode) and automated workflows via ClickUp API, saving teams 8-10 hrs/week.
DE
Frontend Engineer
Develux
Sep 2022 - Feb 2025 (2 years 5 months)
Built real-time features (live chat, order tracking, bidding) via WebSockets across 20+ role-based permissions. Integrated REST APIs and microservices with scalable NGXS state management. Diagnosed and fixed a token-refresh bug causing 2,000+ daily Sentry errors, rebuilding auth flows with HTTP interceptors to eliminate it entirely.
Delivered production-ready Angular frontends for NymCard, a MENA BaaS platform ($22.5M funding round) spanning 150+ APIs. Owned Admin CRM architecture for Soundblock and built data-rich dashboards with Chart.js. Built complex reactive forms (15-25+ field types) for a LegalTech platform. Mentored 5 engineers and grew Jest coverage from 20% to 80%+.
GO
Frontend Developer
GoIT
Nov 2020 - May 2021 (6 months)
Optimized page load speeds by 22% for 3,000+ daily active users using React performance best practices (memoization, lazy loading, code splitting). Refactored duplicated frontend logic into scalable, modular, component-based code.
Built 5 pixel-perfect, mobile-first SPAs with cross-browser compatibility using semantic HTML5, SCSS, and JavaScript, improving rendering performance by 17%.
Education
Degrees, certifications, and relevant coursework
GoIT
Certificate, Fullstack Developer
2020 - 2021
Availability
Looking for a job
Location
UkraineAuthorized to work in
Salary expectations
45k-65k USD
Social media
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