Full-Time

Senior Applied Scientist

Posted on 6/3/2025

Unlikely AI

Unlikely AI

11-50 employees

Neurosymbolic AI platform for trusted automation

No salary listed

London, UK

Hybrid

Hybrid work with a small office near Holborn; occasional in-person team days.

Category
AI & Machine Learning (2)
,
Required Skills
LLM
Python
Tensorflow
Pytorch
Data Analysis
Requirements
  • Deep learning expertise with significant industry experience, and c. 2+ years applying it to language generation, including working with Large Language Models, neurosymbolic integration and knowledge representation.
  • Experience with Python and common ML Frameworks like PyTorch, HF Transformers, TensorFlow, JAX.
  • Track record working as an independent contributor capable of end-to-end development with demonstrable experience in utilising and deploying transformer models.
  • Deep knowledge of machine learning fundamentals and cloud experience.
  • Enthusiasm to learn and get up to speed with cutting-edge technologies which you may not already be deeply familiar with.
  • Excellent verbal and written communication skills with a proven track record of mentoring and coaching others.
  • Capable of working collaboratively and proactively in a fast-paced environment with scientists, engineers, and non-technical stakeholders.
Responsibilities
  • Convert cutting-edge research in neurosymbolic AI into real, production-grade language generation systems.
  • Design and experiment with hybrid neurosymbolic architectures that challenge current thinking in reasoning and planning.
  • Lead applied research projects end-to-end: from ideation and literature review to prototyping and deployment.
  • Write high-quality, robust code that integrates neural and symbolic components.
  • Collaborate with a team of scientists and engineers, articulating complex ideas clearly to technical and non-technical audiences.
  • Analyse and inspect large-scale datasets to support neural training and symbolic extraction.
Desired Qualifications
  • Use of Python libraries that encourage best practices such as pytest, pylint, black etc.
  • Experience with symbolic reasoning engines and integration with neural networks.
  • Strong technical writing skills as evidenced by relevant publications or blogs.
  • Start-up experience.
  • Git/Github
  • Proficiency working with cloud platforms for deploying hybrid AI systems.

Unlikely AI builds a neurosymbolic platform that combines large language models with symbolic and algorithmic methods to run highly intelligent automated systems for diverse clients. The system uses LLMs for flexible reasoning and natural language understanding, while symbolic components enforce rules and verifiable logic to produce auditable, compliant outputs. Unlike systems that rely only on probabilistic models, it emphasizes transparency and safety through the integration of statistics with rule-based checks. The company aims to make intelligent automation trustworthy and controllable, and grows by licensing its platform, delivering tailored AI solutions, and offering expert guidance.

Company Size

11-50

Company Stage

Seed

Total Funding

$21.5M

Headquarters

London, United Kingdom

Founded

2018

Simplify Jobs

Simplify's Take

What believers are saying

  • Lloyds Banking Group partners to test neurosymbolic AI for banking innovation.
  • $20M oversubscribed seed raised September 2022 from Amadeus and Octopus.
  • Founder William Tunstall-Pedoe leverages Alexa expertise as CTO.

What critics are saying

  • OpenAI o1 outperforms neurosymbolic on benchmarks, eroding differentiation now.
  • UK AI Safety Institute rejects Ross proof-of-concept, halting Lloyds pilot.
  • DeepMind AlphaReasoner obsoletes Crossword Genius demo immediately.

What makes Unlikely AI unique

  • Unlikely AI pioneers neurosymbolic platform fusing LLMs with symbolic methods.
  • Universal Language bridges probabilistic ML and deterministic systems.
  • Eliminates AI hallucinations, bias, and black-box decisions entirely.

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Benefits

Hybrid Work Options

Stock Options

Growth & Insights and Company News

Headcount

6 month growth

-2%

1 year growth

-6%

2 year growth

4%
Lloyds Banking Group
Jul 2nd, 2025
Lloyds Banking Group partners with UnlikelyAI to test groundbreaking AI technology

Lloyds Banking Group has announced it is partnering with UnlikelyAI to explore how cutting-edge artificial intelligence can support innovation and enhance customer experience.

Tech Funding News
Sep 16th, 2022
Alexa developer's brainchild, Unlikely AI scores $20M funding — TFN

Unlikely AI, an Artificial Intelligence startup based in London, has scored $20 million in seed funding.

Unlikely AI
Sep 12th, 2022
Unlikely AI raises $20m in oversubscribed seed round

Unlikely AI has today announced the close of a $20m seed round involving a range of prominent UK venture capital funds and angel investors.

INACTIVE