Senior Software Engineer at UnlikelyAI

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Job Title: Senior Software Engineer

Company Description: UnlikelyAI - Series A neurosymbolic AI startup

Job Description:
Join the team building the future of reliable AI by combining LLMs with proprietary symbolic reasoning. You will architect a new public API and platform experience, transitioning bespoke enterprise technology into a scalable product. Work on novel problems at the intersection of probabilistic machine learning and deterministic classical computing for top-tier financial institutions.

Location: London, UK

Why this role is remarkable:

- Work on a unique neurosymbolic stack that bridges the gap between LLMs and deterministic logic, founded by the creator of Amazon Alexa.

- Join a Series A company already delivering high-stakes solutions to top-tier financial institutions and accountancy firms where accuracy is non-negotiable.

- Play a pivotal role in a major architectural shift from bespoke customer engagements to a global, scalable public API platform.

What you will do:

- Design and build the infrastructure for a new public API, including authentication systems, scalability patterns, and developer documentation.

- Develop symbolic reasoning engines that represent complex regulatory knowledge as machine-evaluable rules and knowledge graphs.

- Scale document ingestion pipelines and evaluation frameworks to measure and improve system accuracy across diverse enterprise data formats.

The ideal candidate:

- Exceptional Python engineer with experience writing well-typed, production-quality code in a collaborative monorepo environment.

- Strong ba...