Lexsi Labs is the leading frontier AI lab focused on building aligned, interpretable, and secure superintelligent systems. While that is the vision, the mission to build safety aware autonomous system in the extreme near term. Our research work spans around areas like AI alignment methodologies, interpretability led system design, and foundational model research across structured, tabular, and new autonomous system designs. We published about 25+ papers in the past 15 months across leading conferences ICLR, ICML, WWW, IJCNN, MICCAI, Eurips etc. Our labs are located in India (Mumbai & remote), Paris, & London.

We operate with a flat structure, high autonomy, and a strong bias toward engineers who take full ownership of what they build, from architecture to production behavior.
The Role

Most of the variance in agent performance comes from the system around the model, not the model itself. This role researches that system. The coding agent is the primary testbed: it takes an objective, works on a repository, verifies its own changes, and produces a record of what it did.



It runs inside a customer's network, usually with no internet egress, against codebases that are large, old, thinly tested and load-bearing. Small models under real latency and cost budgets are a target, not a fallback.

Three areas:

Harness. Action space and tool surface design, context construction policy, where deterministic program analysis should replace model inference, control topology (single loop versus decomposition), verification design, and allocation of inference-time compute.

Memory. Schemas for execution state held outside the context window, compaction policy and what it destroys, retrieval under closed-world constraints, and whether an agent measurably improves on a repository over time.

Evals. Task construction from real repository history with executable verification, scoring partially-checkable long-horizon work, variance and contamination control, and failure taxonomies that att

📌 Research Engineer — Agent Architectures (Mumbai)
🏢 AryaXAI
📍 Mumbai