Lexsi Labs is a frontier AI lab focused on building aligned, interpretable, and safe superintelligent systems. Our work spans alignment methodologies, interpretability-led system design, and foundational model research across structured, tabular, and enterprise data. We build AI systems intended for real-world deployment, where transparency, auditability, and robustness are first-class constraints.
We operate with a flat structure, high autonomy, and a robust bias toward engineers who take full ownership of what they build, from architecture to production behavior.
The Role
We are building a high-autonomy AI Engineering Agent that can execute end-to-end AI engineering workflows on top of the Lexsi backend. The system is designed to reason over complex objectives, plan multi-step actions, interact with tools and data systems, evaluate outcomes, and iterate over long horizons while remaining interpretable and aligned.
As a Sr AI Agent Engineer, you will be responsible for defining and building the core agent architecture. You will make foundational decisions about how the agent reasons,



plans and executes actions, maintains memory and state, and has its decisions inspected and explained. This role requires deep hands-on engineering and the ability to operate in ambiguous environments with ownership from day one.
What You’ll Build
End-to-end AI Engineering Agents that can autonomously perform tasks such as experiment design, evaluation, analysis, and reporting, rather than merely assisting a human in these workflows.
Harness Engineering: Able to design and maintain complex harness components that support agents' scale exponentially for complex tasks.
Agent architectures that combine reasoning, planning, tool orchestration, and memory, with explicit handling of long-horizon execution, partial failures, and self-correction.
Deep integrations with the Lexsi backend, including internal evaluation systems, data pipelines, and alignment tooling, as well as enterprise APIs an

📌 Sr AI Agent Engineer (Bengaluru)
🏢 Lexsi Labs
📍 Bengaluru