Biotechnology Company (Cambridge)

Sourcing a Senior Data Scientist to Strengthen Machine Learning Capability Across Complex Biological Data

The Challenge

Our client was a biotechnology company based in Cambridge, working with complex biological datasets across genomics, assay, and imaging research. They needed a Senior Data Scientist who could bring strong machine learning skills and enough life sciences understanding to work meaningfully with the science, not just the data infrastructure around it. That combination is genuinely rare.

Cambridge is one of the most competitive hiring markets in the UK for this kind of role. The people they needed were already employed, largely invisible to job boards, and being approached by well-funded competitors with strong employer brands. Relying on inbound applications was not a realistic option. The search needed to reach people who were not looking and give them a compelling reason to listen.

The Solution

Xist4 ran a targeted direct search, focused entirely on passive candidates with the right technical depth and sector fit. The approach was built around understanding the market first, then going to it deliberately.

• Worked with the client to clarify what the role actually needed to deliver, moving beyond the job description to define the candidate profile and the real selling points of the opportunity.
• Mapped the passive candidate landscape in Cambridge and beyond, identifying data scientists with relevant experience in biotech, life sciences, genomics, or other complex scientific data environments.
• Built outreach messaging that positioned the role clearly, making the hybrid setup, the scientific challenge, and the team context easy for candidates to understand and assess quickly.
• Spoke to candidates in depth before presenting anyone, assessing technical strength, problem-solving approach, communication style, and motivation to move.
• Managed the candidate journey consistently throughout, keeping people informed and engaged so momentum did not drop between stages.

The Result

Xist4 delivered a qualified shortlist within four weeks. Every candidate on it had the right mix of machine learning capability and relevant biological data experience.

The client hired a Senior Data Scientist who was able to contribute to the team’s research work from an early stage. In a market where this profile is genuinely hard to find, getting to a strong shortlist in four weeks, without relying on job boards, is the part that mattered most.