Sambhav Jain

Builder focused on Ethereum infrastructure, distributed systems, and DeFi Analytics. Recently worked on Defillama dimension adapters, adding fees, revenue and volume metrics for 20+ protocols and chains. Before that, Worked on the Nethermind execution client, fixing parity issues, implementing JSON-RPC bugs and features, improving RPC testing frameworks, and building devops workflows.

In Devops experience with Kubernetes, Argo CD, Prometheus, Grafana, and Terraform in production environments. Previously built routing and indexing systems for DeFi protocols at Anthias Labs and contributed to Protocol Labs ecosystem projects. Currently serving as President of BlocSoc IIT Roorkee, leading hackathons, events, and blockchain-focused initiatives.

Ethereum Core Developer & DevOps Engineering Intern at Nethermind (2026-03 – 2026-06)

• Fixed multiple bugs and client-parity issues in the Nethermind Ethereum execution client, improving compatibility across clients.
• Implemented JSON-RPC features including block overrides, fork overrides, and streaming support and fixed bugs and compatibility issues in eth_* methods, also worked to correct them as per hive expects also fixed some bugs in engine/syncs/etc
• Refactored Erigon's black-box RPC testing framework for nethermind added a lot of test cases for eth_* rpc methods, changed tests to work with node type & refactored archive tests to work with full/pruned nodes, then built automated workflows for cross-client RPC testing and compatibility validation.
• Operated production infrastructure with Argo CD, Kubernetes, Prometheus Operator, Grafana, Terraform, Sedge, and Helm charts across internal DevOps projects.

DeFi & AWS Engineering Intern at Anthias Labs (2025-03 – 2025-10)

• Implemented Uniswap V2/V3, Kittenswap, and Hyperswap routing logic in Python, delivering optimized routes in under 2 seconds via custom indexers.
• Built liquidity-source testing frameworks and indexers backed by pyrevm and DynamoDB state storage.
• Interacted directly with CoreWriter contracts.
• Maintained the complete AWS infrastructure, including deployment and maintenance of HyperEVM nodes, other backend and indexer instances, serverless functions, and DynamoDB.

Fellow (Cohorts 4, 5, 6) at Protocol Labs – Dev Guild (2025-08 – 2026-03)

• Improved deployment scripts and smart-contract logic for FilOZ; fixed SDK and Lotus client issues.
• Worked with Storacha on their rclone-compatible storage project.

President at BlocSoc IIT Roorkee (2026-06 – Present)

• Built team-management logic and cross-chain functions using Axelar; wrote Huff fuzz tests for mathematical primitives.
• Won multiple hackathon tracks including Based India; organized lectures and hackathons for university freshmen.

Samudai (2024)

• Delivered a short-term engagement building an ERC-20 token template in Solidity with role-based access and token functionality.

B.Tech in Metallurgical and Materials Engineering – Indian Institute of Technology, Roorkee (2023-08)