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Mikhail Zhuk

@mikhailzhuk

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Senior Frontend Engineer at Spiry who shipped an AI voice assistant and doubled ATS application speed.

Georgia

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At Spiry, I built documentation for AI interactions and established a PostHog analytics pipeline with A/B testing. I also created a Playwright E2E suite that raised test coverage from 0% to 60%.

At Prohiring, I doubled the ATS application’s performance and developed its AI candidate search interface. I also built a real-time voice assistant using the OpenAI Realtime API and reduced CI/CD pipeline duration by 30%.

Experience

Work history, roles, and key accomplishments

Senior Frontend Engineer

Spiry

Feb 2025 - Jun 2026 (1 year 4 months)

Built documentation for AI interactions and established product analytics with PostHog. Developed E2E testing with Playwright and integrated Sentry for error monitoring.

React Vite Tailwind Tanstack Query TypeScript Sentry Playwright Storybook Chromatic PostHog A B Testing E2E Testing Error Monitoring

Frontend Developer

Prohiring

Nov 2021 - Feb 2025 (3 years 3 months)

Doubled application performance and developed AI-powered candidate search and real-time voice assistant. Reduced CI/CD pipeline duration and mentored junior developers.

React Next.js TypeScript Firebase Firestore NodeJS Jest Playwright MUI PWA HTML CSS WebSockets OpenAI API Pinecone CI CD Performance Optimization

Full-stack Developer

SoftBuro

Apr 2020 - Oct 2021 (1 year 6 months)

Introduced unit testing with Jest and React Testing Library, reducing regression bugs. Created a standardized Next.js boilerplate that reduced project setup time.