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Konstantin Chirkov

@konstantinchirkov

Product Engineer at Ownima building web and mobile products, with frontend architecture that cut development time by 40%.

Singapore

Message

What I'm looking for

I'm looking for a Product Engineer role in an AI-first team where I can own features end to end.

At Ownima, I lead the frontend team and drive product engineering across three web and mobile products. I built a modular frontend architecture that shortened development time by 40%, and improved app performance by 30% through rendering optimizations.

At AiThink, I shipped a production Next.js app for real-time analysis and trained a Python computer vision model for object detection and tracking with 95% recognition accuracy. I use Claude Code and other AI tools in my engineering workflow, reviewing every AI-generated change before it ships.

Experience

Work history, roles, and key accomplishments

Current

Lead Product Engineer

Current

Ownima

Dec 2024 - Present (1 year 11 months)

Ownima is a SaaS platform for vehicle rentals. I lead the frontend team and drive product engineering for 3 products: React / React Native web and mobile clients, a Vue.js app and a Nuxt.js app.

• Own features end to end with product and backend: from analytics and user feedback to UI, API contract and release
• Boosted app performance by 30% by optimizing component rendering and eliminating unne

Senior Frontend Software Engineer

themCodes OÜ

Mar 2022 - Sep 2024 (2 years 6 months)

themCodes is an Estonian product company building a LegalTech platform for digitizing legal services.

• Launched a cross-platform mobile app on React Native and Expo, lifting app performance by 40%
• Grew website traffic by 30% by building a fast, SEO-optimized company website with Next.js, React and TypeScript
• Cut server response times by 25% by designing the Supabase (PostgreSQL) data model a

Frontend Software Engineer

AiThink

Feb 2024 - Jun 2024 (4 months)

AiThink builds AI solutions for small businesses.

• Shipped an end-to-end AI product: a production Next.js and TypeScript web app for real-time visualization of production capacity data, from design to release
• Trained a Python computer vision model for object detection and tracking with 95% recognition accuracy
• Integrated model inference into the web app for real-time analysis, connecting ML

System Administrator

LLC ''VILDIS Technologies''

Aug 2021 - Nov 2022 (1 year 3 months)

VILDIS Technologies is a company developing forensic examination equipment, software systems and automation solutions.

• Kept infrastructure uptime at 99% with monitoring in Nagios and SolarWinds
• Lowered network latency by 30% by reconfiguring routers, switches and access points
• Developed information security training that raised employee awareness of cybersecurity threats by 40%
• Prepared d

Middle Frontend Software Engineer

themCodes OÜ

Jan 2021 - Mar 2022 (1 year 2 months)

• Built 15+ screens for the React Native / Expo mobile app, including document upload, e-signature flow and push notifications
• Raised the Lighthouse performance score of the Next.js company website from 68 to 92 using SSG, image optimization and code splitting
• Cut client dashboard load time by 20% by refactoring React components with memoization and lazy loading
• I implemented Supabase (Postg

Junior Frontend Software Engineer

themCodes OÜ

Jan 2020 - Jan 2021 (1 year)

• Built 30+ reusable UI components in React and Tailwind CSS for the client portal and internal admin panel
• Fixed 120+ UI bugs reported by QA, helping cut the open-bug backlog by 40% before the first public release
• Made 25+ pages responsive and cross-browser compatible, increasing mobile session duration by 10%
• Implemented legal document request forms with client-side validation using React