Senior Software Engineer at Series A neurosymbolic AI startup founded by Alexa creator

Job Title

Senior Software Engineer

Salary

Not Disclosed

Company Description

Series A neurosymbolic AI startup founded by the creator of Amazon Alexa

Location

London, UK

Job Description

You will architect the future of reliable AI by merging LLMs with proprietary symbolic reasoning technology. As a senior engineer, you’ll transition bespoke enterprise solutions into a scalable public platform, building high-performance APIs and document pipelines that deliver deterministic, explainable outcomes for top-tier financial institutions where accuracy is non-negotiable.

Why this role is remarkable

• Work under the leadership of William Tunstall-Pedoe, the founder behind Evi (the technology that became Alexa), alongside a team from Google and Amazon.
• Solve the hallucination problem in AI by building neurosymbolic guardrails that bridge the gap between probabilistic machine learning and deterministic computing.
• Join at a pivotal Series A transition point as the company moves from bespoke enterprise deployments to a global, developer-facing public API platform.

What You Will Do

• Design and build the infrastructure for a new public API, including authentication, high-scale architecture, and developer experience tooling.
• Develop complex symbolic reasoning engines that represent regulatory knowledge as machine-evaluable rules and knowledge graphs.
• Scale production-grade document ingestion pipelines to handle sophisticated data extraction and OCR across multiple jurisdictions and formats.

The ideal candidate

• Expert-level proficiency in Python with a track record of shipping well-typed, production-quality code in collaborative monorepo environments.
• Deep experience with complex algorithms and data structures, specifically applied to non-trivial engineering problems or symbolic AI.
• Proven ability to lead the end-to-end lifecycle of new software systems from initial ideation to large-scale production deployment.

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