Worked on backend stability and correctness for the langchain-ai/langchain-nvidia and NVIDIA/NeMo-Agent-Toolkit repositories, focusing on Python-based API and package development. Addressed two critical bugs by refining SSL parameter handling in the ChatNVIDIA HTTP client, ensuring verify_ssl was applied at the transport layer rather than leaking into model payloads. Upgraded backend dependencies to align with the latest LangChain NVIDIA endpoints, updating lockfiles and documentation to support maintainability. Emphasized dependency management and unit testing to validate changes, resulting in improved production reliability for NAT NIM workflows. Demonstrated depth in backend engineering, Python, and integration with LangChain technologies.