About OptexityOptexity is a product-driven research lab building clinical reasoning and computer use models on data no other lab can reach. We deploy directly inside clinics and hospitals - including systems with no APIs, using integration infrastructure we've built and open-sourced - and in return become their preferred partner. That gives us proprietary clinical reasoning trajectories from practicing physicians, and a feedback loop between real patient encounters, our models, and the products built on top of them.
We're a small, fast-moving founding team with multiple published papers in NeurIPS, ICML, CVPR etc and background from Apple, Amazon, Microsoft, CMU, IIT.
We are backed by world-class investors and leaders like Jeff Dean, Neotribe VC, PearVC, Together Fund and Zapier Fund.
How we work- Customer obsession - we start with the customer and work backwards
- Intellectual honesty - ideas matter more than titles; we communicate directly and assume good intent, even in disagreement
- Bias for action - we build and learn with customers rather than debate in the abstract
- Extreme ownership - we own outcomes, not just tasks, and see problems through
Why this role existsMost research roles at this stage hand you a dataset everyone already has and ask you to be marginally better than the last person who tried. Here you get data nobody else has - real clinical reasoning trajectories from practicing physicians - and the room to figure out what to do with it. This is a founding research hire: you'll define the agenda as much as execute it, with direct founder access, real compute, and nothing between an idea and an experiment.
What you'll do- Work with real, proprietary clinical data from hospital and clinic partners to surface insights that shape model and product direction
- Build clinical reasoning models that improve physician and clinic workflows
- Design and publish benchmarks that expose where current LLMs fall short on real clinical reasoning
- Evaluate computer-use models on real-world tasks
- Own the training and evaluation pipeline end to end
- Take open-ended problems from question to working model, with minimal predefined structure
- Write up findings as technical reports and papers
Ideal candidate- Has real research experience - can define a problem, not just execute a known one
- Has trained models before (not just fine-tuned APIs) and is fluent in Python
- Master's or higher in ML or a related field
- Energized by open-ended problems and ambiguity
- Wants to publish, not just ship
- Takes ownership without needing to be guided
- Genuinely wants a startup over big tech - speed and ambiguity as defaults, not exceptions
Nice to have- Prior founder or founding-engineer experience
- Strong product taste
- Worked on healthcare datasets before
- Built LLM-powered products before
- Ambitions to start your own company someday - we'll support that path
What you get- Direct, daily work with the founders, plus exposure to board and investor conversations
- Real ownership of technical direction, with scope that grows as the company does
- Full compute and data to do the work properly
- Competitive salary and meaningful equity
- Visa sponsorship available
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