Worked on the babylonlabs-io/babylon, vigilante, and btc-staker repositories, focusing on blockchain backend development and operational reliability. Delivered a core upgrade by aligning dependencies with Cosmos SDK v0.53.2 and IBC v10, improving cross-chain compatibility and stability. Enhanced security by implementing Bitcoin public key validation for stake expansion and addressed critical bugs in selective slashing and unstake handling for expired outputs. Improved configuration management in vigilante by updating YAML settings for BTC staking tracker reliability. Emphasized thorough documentation and end-to-end testing, using Go, YAML, and GitHub Actions to ensure robust deployment workflows and maintainable, well-documented codebases.