Bibek Timsina

AI Full-Stack Engineer

I build products end-to-end with TypeScript, Cloudflare, PostgreSQL, and LLMs for remote teams. Currently leading engineering for Proma.aiat Growthzilla.

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Featured Projects

A few projects that show how I think about product engineering, developer tooling, AI systems, and scale.

Proma.ai Engineering

Lead engineering and product direction for Proma's AI assistant: a front-office worker that answers a business's customers, works for the owner, and builds the systems the business runs on.

LocalJam

Listen together, in sync, over local Wi-Fi. One phone hosts and plays its own songs, and everyone nearby hears the same moment in their own headphones, from the app or a browser. No internet and no accounts. Built in Flutter on its own clock-sync protocol and native audio engines.

Doodleblaze

Multiplayer drawing race judged by AI. Everyone draws the same word at once, and the first doodle Cloudflare's Clef model recognizes past 75% wins the round. Built on Workers, Durable Objects and Workers AI.

Flaremender

Open-source agent that explores your app in a real browser, writes and repairs Playwright tests, and runs them on a schedule. Self-hosted on your own Cloudflare account with a one-click deploy.

Callbreak Multiplayer

Real-time multiplayer card game built from zero to 1,000,000+ Google Play downloads, with Firebase-backed matchmaking and rejoin flows.

Flutter Templates

Open-source catalog of production-focused Flutter widgets and full app templates, built to help developers start polished mobile interfaces faster.

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Experience

Growthzilla

Lead Engineer · Full-time

Jul 2022 - Present

Remote

Lead engineering and product direction for the Proma.ai assistant, an AI front-office worker that answers a business's customers, works for the owner, and builds the systems the business runs on.
Led the research into what the assistant should be and how to build it, and wrote the architecture the team builds against.
Built the state engine that decides what the assistant may do, plus the prompt and tooling infrastructure behind its AI features.
Own full-stack architecture with a remote US-based team, from database design and LLM integration to production deployment on Cloudflare.
Designed real-time collaboration features using WebSockets and optimized client/server state management.

Khellabs

Co-Founder and CTO · Full-time

Jan 2020 - Jul 2022

Remote

Co-founded and built Callbreak Multiplayer from zero to 1,000,000+ downloads on Google Play Store.
Architected Firebase-backed real-time multiplayer infrastructure for mobile networks with frequent disconnects.
Implemented matchmaking, private rooms, room lifecycle state, and rejoin flows for concurrent players.
Optimized data synchronization and read patterns to keep real-time infrastructure affordable at scale.
Led retention experiments and product iteration from analytics, player feedback, and release outcomes.
Managed the full product lifecycle: from initial development and launch to marketing and rapid iteration.

Hamro Patro

Mobile Software Engineer · Part-time

Oct 2019 - Jul 2020

Nepal

Conducted a feasibility study for migration of a native Android app to Flutter.
Experimented with adding Flutter views in an existing native Android app.

Acme Software

Mobile Application Developer · Part-time

Jan 2019 - Dec 2020

Remote

Developed a podcast app using Flutter, with a focus on performance optimization.
Implemented a custom audio player with support for offline playback.
Wrote unit and integration tests to ensure code quality and reliability.

Sastodeal

Freelance Mobile Engineer · Contract

Feb 2020 - Apr 2021

Kathmandu

Led the development of a mobile application for Sastodeal, a leading e-commerce platform in Nepal.
Led the handover of the project to the client and provided training to the client's team.

View Resume