Senior Software Engineer at UnlikelyAI

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers.

She will pick the best candidates from Jack's network

The next step is to speak to Jack.

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 background in complex algorithms and data structures, capable of solving non-trivial problems in symbolic AI or knowledge representation.

• Proven track record of end-to-end ownership, taking brand-new software systems from ideation through to production in a fast-paced environment.

Who are Jack & Jill?
Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.

Next steps
Step 1. Visit our website.
Step 2. Click 'Talk to Jack'.
Step 3. Talk to Jack so he can understand your experience and ambitions.
Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role.
Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction.
Step 6. If not, Jack will find you excellent alternatives. All for free.

We never post fake jobs
This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.
Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.
We appreciate this can make them look a bit suspect, but there isn't much we can do about it.
Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.