Sr. Data Scientist, Retrieval & Agentic Systems

Company: kharon
Location: London, Greater London
Type: hybrid
Posted: Oct 28, 2026
Views: 1

✨ AI Summary

Kharon, a global security and risk intelligence provider, is hiring a Senior Data Scientist for Retrieval and Agentic Systems in London. The role focuses on hybrid search, RAG pipelines, and LLM-powered applications using Python, BM25, and vector search. Candidates need 3+ years of experience in Data Science or ML Engineering with strong production software skills. The position offers a hybrid 3-day office schedule, a salary of £105,000 to £120,000, and private health insurance.

Location: London, UK
Annual Remuneration: £105,000 - £120,000 and discretionary annual bonus
Pay Frequency: Monthly
Probationary Period: 180 days
Work Arrangement: Hybrid, 3-days per week

TL;DR Kharon is seeking a full-time Senior Data Scientist, Retrieval & Agentic Systems based in London.
  • Own and advance content discovery in Corestream, improving how customers find, explore, and engage with relevant risk intelligence, while helping shape the technical direction of discovery capabilities across Kharon's products.
  • Redesigning and improving Kharon's hybrid search capabilities, opening new avenues for content discovery — drawing on modern approaches including BM25 tuning, semantic distance, RAG, reranking, and graph-based signals that go beyond traditional semantic similarity.
  • Explore and build new discovery experiences, including agentic search, intelligent content categorization, personalized feeds, and systems that surface relevant connections across large collections of intelligence.
  • Driving the evolution of Kharon's narrative generation pipeline — how we take graph and analytical data and transform it into compelling, accurate written intelligence for customers.
  • Own problems end to end, from identifying opportunities and evaluating approaches to prototyping, implementing, deploying, and continuously improving production systems.
  • Collaborate closely with Product, Data Science, and Engineering, influencing priorities and architectural decisions while maintaining a strong hands-on contribution.

  • A proven interest or experience in global security, financial crimes, sanctions, export controls, or related domains
  • 3+ years of experience in Data Science, AI Engineering, ML Engineering, or related software engineering roles
  • Hands-on experience in information retrieval, including experience with some combination of lexical search, embeddings, vector search, hybrid retrieval, ranking, reranking, and retrieval evaluation
  • Practical experience building LLM-powered applications, RAG pipelines, or agentic workflows.
  • Strong Python skills and the software engineering ability to take an idea from prototype to a reliable, maintainable production implementation
  • Demonstrated initiative and technical ownership — a track record of tackling ambiguous problems independently, challenging assumptions, and driving solutions forward while working with stakeholders
  • Curiosity and a willingness to experiment with emerging approaches while maintaining a pragmatic focus on what actually works
  • Bonus: Experience with graph-aware search or integrating knowledge graph outputs into retrieval systems

Kharon operates at the nexus of global security and is on a mission to revolutionize the current landscape. We take complex data as it relates to global security and empower our clients to not only understand the risk associated with their potential business relationships but to operationalize that data so that they can make the best and most informed decisions possible.

From financial crimes and sanctions to export controls and threat identifications, our tools optimize protection against the types of risks that could otherwise be incredibly dangerous and excessively costly to any business. Serving many of today’s leading global financial and multinational institutions, Kharon products are the most powerful in the space with a precision and depth that is absolutely unparalleled.

When you look at any major global crisis event, we’re providing intelligence that’s at the heart of those circumstances. We connect the dots in a way that’s meaningful. As the world continues to evolve in complexity, so too does the demand for our products. Given the significance of our work and the increasing global reliance on our insights, we are looking for a Sr. Data Scientist, Retrieval & Agentic Systems to join us as we work to shape the way businesses perceive and navigate global risks.

Company Benefits
  • Fully-sponsored private health insurance
  • Pension plan with 3% employer contribution
  • Annual leave plus bank holidays

DISCLOSURES
Kharon is committed to cultivating and maintaining a workplace that is free from harassment and discrimination. All qualified applicants will receive consideration for employment without regard to race, religion, color, national origin, ethnicity, gender, gender identity or expression, sexual orientation or identity, neurodiversity, appearances, age, protected veteran status, or status as a qualified individual with disability.

We are committed to making reasonable adjustments to support disabled applicants and employees. If you require any adjustment to participate in the recruitment process, please contact [email protected]

You must have the right to work in the UK. Kharon is unable to offer visa sponsorship for this role.


UNITED KINGDOM Candidate Privacy Notice

Kharon is committed to protecting your personal data in accordance with the UK General Data Protection Regulation (UK GDPR) and the Data Protection Act 2018. We collect the personal data you submit as part of your application — including your name, contact details, employment history, and qualifications — to assess your suitability for the role. Our lawful basis for processing is legitimate interests (Article 6(1)(f) UK GDPR).

If your application is unsuccessful, your data will be retained for up to 12 months before being securely deleted. If you accept a role, your data will transfer to your employee record.

You have the right to access, correct, or request deletion of your data, to object to or restrict its processing, and to lodge a complaint with the UK data protection authority, the ICO, at www.ico.org.uk. To exercise your rights, contact us at [email protected].

Apply Now ♡ Save Job

About the Company

Name: kharon
Website: https://kharon.pinpointhq.com

Join us as we shape the future of technology and drive digital transformation across industries. Contact us today to learn how Kharon can help your business thrive in the digital age.

View Company Profile

More jobs at kharon