Solidity Developer
Senior Blockchain Engineer
Senior Blockchain Engineer with ~5 years building production-grade blockchain infrastructure across EVM, Cosmos SDK, and multi-chain ecosystems. Deep expertise in Go microservices, gRPC, transaction lifecycle management, and on-chain monitoring. Experienced with Fireblocks custody integration, deposit processing pipelines, and event-driven architectures. Proven track record shipping to mainnet with significant TVL — currently building crypto payment infrastructure at Noah (crypto payments, QuickNode + Fireblocks).
Experience: 5 years
Yearly salary: $100,000
Hourly rate: $50
Nationality: 🇮🇳 India
Experience
Senior Core Engineer — Blockchain & Backend Infrastructure
Noah 2025 - 2026
Extended Noah's blockchain transaction infrastructure by integrating QuickNode webhook pipelines alongside the existing Fireblocks custody setup — covering deposit-address registration, confirmation tracking, and settlement orchestration via AWS Step Functions Designed and maintained gRPC-based Go microservices for on-chain event processing, including webhook pipelines with auth hardening, retry/backoff logic, and idempotency guarantees for payment flows Implemented event-driven deposit monitoring and confirmation systems across EVM-compatible networks, with fee validation and safe production processing for crypto payment infrastructure Integrate new chains like Arbitrum, Celo, and tokens like PayPalUSD, USDT and USDC on those networks. Expanded reliability through API and E2E test coverage; maintained generated types, mocks, and codegen wiring for stable cross-service deployments Participated in on-call rotations and incident response for production blockchain infrastructure serving live payment flows
Senior Blockchain Engineer — Core Infrastructure
Catalysis Labs 2025 - 2025
Built a production-grade Go SDK from scratch for constructing AVSs on EVM — including consensus engines, P2P networking, ECDSA/BLS cryptographic schemes, and execution engines; shipped v0 with 80%+ test coverage Engineered distributed system primitives: idempotent task execution, distributed coordination patterns, and robust error handling across multi-node environments Built an integration test suite with live Anvil instances, multi-node deployers, and automated Solidity contract deployment and binding generation Created Lumos CLI for developer tooling — covering operator registration, project scaffolding, network management, and relay system coordination Established CI/CD pipelines, Docker containerization, and build systems for a team shipping EVM smart contract + Go infrastructure
Senior Blockchain Engineer — Chain Infrastructure & Smart Contracts
Quasar Labs / Tower 2023 - 2025
Contributed to TowerDex — a Rust-based DEX currently deployed on Babylon mainnet with $31M+ TVL (at peak) — from ideation through architecture and deployment Owned all chain operations: planned and emergency upgrades, governance proposals, node maintenance, IBC relayers, and chain state management across testnets and mainnet Built and maintained CosmWasm-based concentrated liquidity and LP vault smart contracts on Osmosis; deployed and maintained EVM vaults on Sepolia testnet and Arbitrum mainnet Designed and implemented transaction state machines, monitoring systems, and alert pipelines for continuous production observability across company products Sole contributor on E2E and Kubernetes-based testing environments replicating mainnet conditions; created Vault Based Incentives (VBI) — a new merkle proof-based incentives product Built monitoring and alerting infrastructure using Grafana, Firehose, and Graph Protocol indexers for real-time chain and vault anomaly detection
Blockchain Developer — Cosmos SDK & IBC Infrastructure
Persistence One 2021 - 2023
Played a significant role in shipping pStake liquid staking v3 — built on IBC, ICA, and ICQ — which accumulated $5M+ TVL within a month of launch Built and maintained the liquid staking module and orchestrator for v2 (CosmosSDK module), implementing signature aggregation, IBC packet handling, and RPC/gRPC communication patterns Maintained pBridge between Ethereum and Tendermint-based chains; deep experience with cross-chain message passing and finality handling Created robust CI/CD pipelines and Kubernetes-based testing environments designed to replicate mainnet behavior; managed mainnet/testnet upgrades for PersistenceOne (XPRT) Contributed to PersistenceSDK — an open-source Go framework for composable Cosmos blockchain modules, currently AssetMantle
Skills
solidity
english