Hovhannes Hovhannisyan

Ping me here: Telegram, Email

Software engineer focused on mobile and web. I build reliable, user-centric products, and I explore AI tools and LLMs to make apps smarter.

Open source

expo-cutout

On-device background removal for Expo. Apple Vision on iOS 17+ turns a local photo into a transparent PNG. No server, no API key. How I built it

ExpoiOSApple Vision

Experience

ONEX.AM

ONEX.AM

Mobile Software Engineer / React Developer

Aug 2025 - Present

1 year 1 month

Mobile Development (Core Experience)

I work on the company's main mobile apps across iOS and Android — shipping features, fixing platform-specific bugs, and improving performance. I collaborate closely with designers and PMs.

  • Maintained production apps used by thousands of people.
  • Reduced crash rates with targeted bug fixes and performance work.
  • Shipped new features on iOS and Android with design and product partners.
  • Fixed platform-specific issues that hurt performance and UX.

Web Development

  • Built responsive web interfaces with a focus on clarity and reliability.
  • Used solid frontend practices and worked with the team to keep the code maintainable.
React NativeExpoReactNext.jsTypeScriptVercelTanStack QueryTailwind
Flash Labs

Flash Labs

Software Engineer

Jan 2024 - Aug 2025

1 year 7 months

Founding Software Engineer

As founding engineer at Flash Labs AI, I helped build mobile ed-tech apps for gamified learning. We used React Native to ship responsive, performant apps that could scale.

  • Built features with React Native and Expo that improved engagement and learning flow.
  • Worked with product and design to ship software that matched product goals.
  • Set up development processes and architecture for long-term maintainability.

Junior React / React-Native Engineer

Built web interfaces with React (Next.js) and mobile apps with React Native and Expo. Wired up Node.js and Supabase backends for data-driven features. Debugged performance issues and worked with design and product to keep the UX clear.

React NativeReactNext.jsExpoNode.jsSupabaseVercelTanStack QueryTailwind
HYE Box

HYE Box

Fullstack Frontend Developer

Jun 2023 - Jan 2024

7 months

Fullstack Frontend Developer

Built an e-commerce platform for subscription purchases of Armenian souvenir boxes. Users picked a tier, set preferences, and checked out. I handled payments and automated order sync to databases and Google Sheets so ops stayed simple.

  • Built subscription checkout flows that improved conversion and UX.
  • Integrated payments and automated order processing.
  • Synced order data to databases and spreadsheets for ops.
  • Kept the purchase path reliable and easy to use.