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NeN

AI Engineer

San Francisco, United States Onsite Posted 25 February 2026
Contract
full time

Overview

Be one of the founding engineers at Nen, shaping the AI layer that powers automation across enterprise desktop environments at scale. The role - Build and extend a multi-model agent loop across leading AI providers - Benchmark models across cost, latency, and reliability — and own the framework for doing so continuously - Improve agent reliability through better perception, grounding, and structured context - Instrument traces and build the data foundation for future fine-tuning - Shape the Python workflow SDK so improvements are transparent to users Requirements - Hands-on experience building with LLMs in production - Strong Python; comfortable working across SDK, API, and model integration layers - Experience evaluating and benchmarking models with structured evals, not just vibes - Familiarity with agent architectures, tool use, and multi-step reasoning loops - Curiosity about the computer-use model landscape and how it's evolving fast