Open to opportunities

Tenith Hasintha

@tenith

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Lead Full-Stack Engineer building scalable Python backends and AI-powered real-time systems.

Sri Lanka

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What I'm looking for

I’m looking for a team where I can own end-to-end delivery—shipping production APIs and AI-powered real-time features. I want to build with FastAPI/LangChain/LangGraph and lead cross-functional engineering while turning ambiguity into maintainable systems.

I’m a Lead Full-Stack Engineer with 4+ years of experience building scalable Python backends, AI-powered applications, and real-time data systems. I’ve designed and deployed production-grade REST APIs with FastAPI and Flask, and I’m comfortable owning full-stack delivery from database architecture through to containerized deployment.

At Metarune Labs, I’ve driven an AI-first transition by leading LLM integrations across multiple products using LangChain, LangGraph, and MCP, including model fine-tuning via Unsloth and Hugging Face—improving development cycle times while expanding feature capability. I also engineered real-time NestJS backends on the Bitcoin blockchain with scalable parallel UTXO indexing and Socket.IO multi-user sync, showcased at Token 2049 Singapore.

I bring strong technical leadership through mentoring and cross-functional ownership, translating ambiguous product requirements into reliable, maintainable systems. My work also spans live AI tooling in production (LangChain/LangGraph, RAG systems, vector stores) and hands-on engineering across frontend, backend, Web3, and infrastructure—so I can ship under pressure without losing quality.

Experience

Work history, roles, and key accomplishments

Current

Lead Software Engineer

Current

Metarune Labs (Pvt) Ltd

Jan 2024 - Present (2 years 5 months)

Led LLM integration adoption across multiple products using LangChain, LangGraph, and MCP, including fine-tuning workflows with Unsloth and Hugging Face. Engineered real-time blockchain backends and Socket.IO multi-user synchronization for Bitcoin-based applications, showcased at Token 2049.

LLMs (LangChain LangGraph MCP UnSloth Hugging Face NestJS Socket.IO TypeScript UTXO Indexing

Full-Stack Engineer

Metarune Labs (Pvt) Ltd

Jan 2022 - Jan 2024 (2 years)

Architected Draftables, a Unity American football manager game, including a custom MVCS client architecture and Firebase (Auth/Firestore) integration. Shipped Solidity/ThirdWeb smart contract features for in-game NFT mechanics and built the Ethos Chrome Extension for real-time X credibility scoring.

Unity C#Firebase Firestore Solidity Thirdweb TypeScript Vite Chrome Extension development Socket Real Time DOM Extraction

Technical 3D Artist

Picaroon

Jan 2021 - Jan 2022 (1 year)

Built Python/Blender automation scripts for batch procedural NFT generation and automated After Effects compositing, reducing manual pipeline work. Owned the full 3D-to-render pipeline for high-volume NFT asset creation.

Python Blender After Effects 3D Modeling Texturing