NLP Data Scientist - UK

We're hiring an NLP Data Scientist to work on challenging NLP problems that underpin Quantexa’s entity resolution product: messy and multilingual text, creating training data from scratch, and careful evaluation.

The role sits in our NLP Centre of Excellence, which builds NLP capabilities for Quantexa's products - an increasingly important area as the platform is applied to unstructured text. Our work ranges from shipping production models for tasks like named entity recognition, relation extraction, and text classification, through to more exploratory research that drives improvements in our products and the wider field. We work on the full spectrum of model complexity - from fast, explainable models, to fine-tuned small language models to agentic LLM-based systems.

As a NLP Data Scientist, you'll develop these NLP components end-to-end from framing the problem and building training and testing datasets, training and evaluating models, handover for production, and improving accuracy based on feedback. Near-term, this is focused on building lightweight, fast NLP models where careful design of training data and evaluation benchmarks is critical.

You’ll be involved in:

• Translating underspecified business problems into well-scoped ML tasks

• Training, evaluating, improving NLP models end-to-end through reproducible pipelines

• Sourcing, building, curating training and evaluation datasets from heterogeneous, often imperfect inputs

• Working across languages and scripts, such as Arabic, Japanese, Chinese, and others

• Developing and using LLM-assisted workflows for dataset generation, error analysis, and model improvement iterations

• Collaborating with engineering and product teams to turn ideas into integrated product features; presenting findings to stakeholders

What you’ll bring

• Degree in computer science, computational linguistics, artificial intelligence, mathematics, physics, engineering, or related field

• Familiarity with NLP and machine learning proven through personal, university or work projects

• Experience building or adapting machine learning models end-to-end, with the ability to explain the decisions made

• Proficiency in Python (or similarly complex programming language), which is the primary programming language used

• Willingness to learn about unfamiliar languages and scripts

Nice to have

• Master's degree in relevant field

• Familiarity with the scientific and ML-related Python stack: NumPy, SciPy, scikit-learn, TensorFlow, PyTorch, PySpark, Hugging Face Transformers, spaCy

• Familiarity working with LLMs, LLM APIs, agentic systems

• Experience in working with multiple languages and scripts

• Experience with integrating the results of research into user-facing products

About Quantexa

Quantexa was founded in 2016 with a vision of enabling better decision making through better data-driven intelligence. Our technology started out in FinTech, helping tackle serious criminal activity. 10 years, 16 locations and 800+ employees later, we've gained "Unicorn" status, and we still believe in our original Decision Intelligence Platform. We've completed our first acquisition, combining Aylien's advanced AI and Natural Language Processing into the Platform, and reached Centaur status ($100M in ARR).

We're made up of people from 47 nationalities who speak over 20 languages, and nearly half of our colleagues come from an ethnic or religious minority background.

If this sounds like a place you'd want to work, we'd love to hear from you!

Our perks and quirks.

What makes you Q will help you to realize your full potential, flourish and enjoy what you do, while being recognized and rewarded with our broad range of benefits.

We offer:

Competitive salary & Company bonus

25 days annual leave (with the option of buying up to 5 days, and rolling over up to 10), plus national holidays + your birthday off!

Pension scheme with a company contribution of 6% (when you contribute 3%)

Private Healthcare, including dental & optic cover

Life Insurance and Income Protection

Regularly bench-marked salary rates

Enhanced Maternity, Paternity, Adoption, or Shared Parental Leave

Well-being days

Volunteer Day off

Work from Home Equipment

Commuter, Tech and cycle to work schemes

Free Subscription to a meditation, relaxation and sleep app

Continuous Training and Development

Spend up to 2 months working outside of your country of employment over a rolling 12-month period with our ‘Work from Anywhere’ policy

Team Social Budget & Company-wide Socials

Our mission.

We have one mission. To help businesses grow. To make data easier. And to make the world a better place. We’re not a start-up. Not anymore. But we’ve not been around that long either. What we are is a collection of bright, passionate minds harnessing complexities and helping our clients and their communities. One culture, made of many. Heading in one direction – the future.

It’s all about you.

We want you to feel welcome, valued, and respected - because it’s your individuality and passion that make you Q. We see that, and we celebrate it. That’s why we’re proud to be an Equal Opportunity Employer.

We are committed to fostering an inclusive and diverse work environment, continuously improving to ensure everyone belongs. Our recruitment process is designed to be inclusive and accessible. If you need any reasonable adjustments or accommodations, please let our Talent Acquisition Team know - we’re happy to assist.

No matter your race, beliefs, color, national origin, gender, sexual orientation, age, marital status, neurodiversity, or abilities—whoever you are—if you're a passionate, curious, and caring human eager to push the boundaries of what’s possible, we want to hear from you.