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Niraj Kamdar

Senior Backend Engineer

Dubai, UAE

🔴HODLing

Backend engineer with 5+ years owning production services end-to-end for high-availability DeFi/fintech systems in TypeScript/Node.js, Python, and Rust. Architected backend infrastructure serving 7M+ wallets and 1M+ daily JSON-RPC calls. Expertise in DeFi protocols, real-time indexing, TDD, and DevOps.

Skills

TypeScript/Node.js9/10
Python9/10
REST API Design9/10
TDD / Testing (unit, integration, E2E, fuzz)9/10
DeFi Protocol Integration9/10
Event-Driven Architecture (9/10)On-chain Event Indexing (Ponder/Subgraphs) (9/10)PostgreSQL (9/10)Docker / CI/CD (GitHub Actions) (8/10)ethers.js / viem (8/10)Solidity (7/10)Rust (7/10)

Work Experience

Core Protocol / Backend Engineer

Zenchain

Feb 2024 — Jan 2026

Architected a cross-chain message relayer (Bitcoin↔EVM) on a service-oriented, database-centric design using PostgreSQL stored procedures for ACID-compliant atomic state transitions. Built transaction-management infrastructure with finality monitoring; custom input-selection algorithm cutting transaction costs by 60%. Reduced build/release pipeline cycles from 8 hours to 22 minutes (95% reduction).

Software Engineer

AITV (Polywrap)

Aug 2021 — Nov 2023

Spearheaded 'DeFiWrapper' TypeScript SDK integrating 10+ DeFi protocols (Uniswap, Aave, Compound). Led Polywrap Python client (45K+ PyPI downloads) and core CLI toolchain. Architected an AI agent service (FastAPI + LLM) executing DeFi actions from natural-language intent. Winner of Safe Agent Hackathon.

Backend Engineer

dOrg

May 2021 — Present

Engagements across multiple DeFi clients including lending/borrowing protocol (off-chain Health Factor indexer, REST API with Hono/Node.js), event-driven automation with LISTEN/NOTIFY Postgres backbone, Coordinape Merkle distributor backend, Opolis GraphQL indexing subgraphs (100K+ queries/month), and Altworth Solana-based trading-card game backend.

Education

Dhirubhai Ambani Institute of Information and Communication Technology

B.Tech · Information and Communication Technology

2017 – 2021