Senior Machine learning Engineer (GraphRAG)

BenchSci

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profile Job Location:

London - UK

profile Monthly Salary: Not Disclosed
Posted on: 06-11-2025
Vacancies: 1 Vacancy

Job Summary

We are looking for a Senior Machine learning Engineer (GraphRAG & Retrieval Tools) to join our Knowledge Graph Retrieval team.

You will help design and build robust reusable retrieval tools and services that empower consumer teams to leverage our large-scale Knowledge Graph. You will be building the core platform that powers sophisticated Graph-based Retrieval-Augmented Generation (GraphRAG) and automated querying applications. You will work alongside some of the brightest minds in tech enabling state-of-the-art approaches to data retrieval and reasoning. Your work is at the core of this challenge ensuring our internal teams can easily and effectively build applications on top of our graph data.

Your primary focus will be to build tools that abstract the complexity of graph traversal and retrieval. This includes developing sophisticated models for automated querying creating high-performance retrieval services and building developer-friendly APIs and libraries.

You are comfortable working in a team that pushes the boundaries of what is possible with cutting-edge ML/AI challenges the status quo and is laser-focused on value delivery in a fail-fast environment.

You Will:

    • Design build and maintain scalable retrieval tools and services (APIs libraries) for internal consumer teams focusing on our Knowledge Graph.
    • Develop and optimize automated querying systems including Text-to-Query models (e.g. Text-to-Cypher) to translate natural language questions into efficient graph queries developing Cypher templates and query stitching.
    • Partner with consumer teams to understand their needs provide high-quality and well-documented tools and drive the adoption of your retrieval platform.
    • Own the end-to-end lifecycle of the ML models that power these tools from data preparation and training to deployment monitoring and iteration.
    • Collaborate cross-functionally with data engineers ML engineers and product managers to build a cohesive and powerful retrieval ecosystem.

You Have:

    • Minimum 3 ideally 5 years of experience as an ML engineer or data scientist with a proven track record of delivering complex ML projects.
    • A strong platform-building mindset: Experience building and maintaining ML-powered tools APIs or platforms for other developers or internal teams.
    • Deep hands-on experience with Graph Data Science (GNNs link prediction) and Knowledge Graphs (e.g. Neo4j Neptune) using query languages like Cypher.
    • Strong demonstrable experience with LLMs and RAG pipelines with a specific focus or passion for query generation and retrieval optimization.
    • Mastery of the Python data science and ML ecosystem (Pandas PyTorch scikit-learn) and experience with the full ML development lifecycle. Experience deploying services (e.g. FastAPI Docker) is a plus.
    • Degree (preferably PhD or Masters) in Computer Science Data Science or a related field.
    • Excellent communication and collaboration skills with a customer-centric mindset for understanding and supporting your internal consumer teams.
Benefits and Perks:
* A great compensation package that includes BenchSci equity options
* A robust vacation policy plus an additional vacation day every year
* Company closures for 14 more days throughout the year
* Flex time for sick days personal days and religious holidays
* Comprehensive health and dental benefits
* Annual learning & development budget
* A one-time home office set-up budget to use upon joining BenchSci
* An annual lifestyle spending account allowance
* Generous parental leave benefits with a top-up plan or paid time off options
* The ability to save for your retirement coupled with a company match!

About BenchSci:
BenchScis mission is to exponentially increase the speed and quality of life-saving research and development. We empower scientists to run more successful experiments with the worlds most advanced biomedical artificial intelligence software platform.

Backed by Generation Investment Management TCV Inovia F-Prime Golden Ventures and Googles AI fund Gradient Ventures we provide an indispensable tool for scientists that accelerates research at top pharmaceutical companies and leading academic centers.

Our Culture:
Our culture fosters transparency collaboration and continuous learning.

We value each others differences and always look for opportunities to embed equity into the fabric of our work. We foster diversity autonomy and personal growth and provide resources to support motivated self-leaders in continuous improvement.

You will work with high-impact highly skilled and intelligent experts motivated to drive impact and fulfill a meaningful mission. We empower you to unleash your full potential do your best work and thrive. Here you will be challenged to stretch yourself to achieve the seemingly impossible.

Diversity Equity and Inclusion:Were committed to creating an inclusive environment where people from all backgrounds can thrive. We believe that improving diversity equity and inclusion is our collective responsibility and this belief guides our DEI journey. Learn more about ourDEI initiatives.

Accessibility Accommodations:Should you require any accommodation we will work with you to meet your needs. Please reach out toemailprotected.
We may use artificial intelligence (AI) tools to support parts of the hiring process such as reviewing applications analyzing resumes or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed please contact us.

Required Experience:

Senior IC

We are looking for a Senior Machine learning Engineer (GraphRAG & Retrieval Tools) to join our Knowledge Graph Retrieval team.You will help design and build robust reusable retrieval tools and services that empower consumer teams to leverage our large-scale Knowledge Graph. You will be building the ...
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BenchSci is a world leader in AI solutions for preclinical R&D. Using proprietary technology, we help decode the complexity of biomedical research.

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