Legal Counsel (Commercial) in Slough

Prolific is not just another player in the AI space – we are the architects of the human data infrastructure that’s reshaping the landscape of AI development. In a world where foundational AI technologies are increasingly commoditized, it’s the quality and diversity of human-generated data that truly differentiates products and models.

The role

As the Commercial Legal Counsel at Prolific, you’ll lead our commercial contracting work and provide clear, pragmatic legal support across the business. You’ll work closely with Sales, Partnerships, Services and other key stakeholders to drive efficient contracting, enable growth, and help teams make informed decisions. This is a high-impact role for someone who thrives in fast-moving environments and enjoys combining autonomy with cross-functional collaboration. Join us in shaping a scalable, efficient, and business-aligned legal function at Prolific — ideal for someone who is adaptable, clear-thinking, and driven to make meaningful impact.

What you’ll be doing in the role

• Lead on drafting, reviewing, and negotiating commercial contracts with clients, suppliers, and partners.
• Maintain and improve standard terms, templates, and contracting processes to speed up deal cycles.
• Support RFPs and tender submissions, particularly for government and academic institutions.
• Provide clear, commercially focused legal advice to internal stakeholders.
• Develop contracting playbooks, training materials, and scalable legal workflows.
• Collaborate closely with Sales and other key stakeholders to support commercial aims and risk mitigation.
• Coordinate work with external counsel when needed.
• Advise on broader commercial matters as they arise, including marketing, IP, and consumer issues.

What you’ll bring to the role

• 6+ years PQE; UK or EU qualified (US-qualified also considered).
• Significant experience drafting, reviewing, and negotiating a wide range of commercial agreements (in-house or private practice).
• Confident engaging with counterparties across the UK, US, and Europe.
• Experience supporting RFPs/tenders, ideally including public sector and academia.
• Ability to streamline contracting processes and develop playbooks, templates, and training.
• Strong communicator able to translate legal issues clearly for non-legal stakeholders.
• Comfortable working independently and under pressure, with excellent stakeholder management skills.
• Some working knowledge of employment law and worker/employee status.

Why Prolific is a great place to work

We’ve built a unique platform that connects researchers and companies with a global pool of participants, enabling the collection of high-quality, ethically sourced human behavioral data and feedback. This data is the cornerstone of developing more accurate, nuanced, and aligned AI systems. We believe that the next leap in AI capabilities won’t come solely from scaling existing models, but from integrating diverse human perspectives and behaviors into AI development. By providing this crucial human data infrastructure, Prolific is positioning itself at the forefront of the next wave of AI innovation – one that reflects the breadth and the best of humanity.

Working for us will place you at the forefront of AI innovation, providing access to our unique human data platform and opportunities for groundbreaking research. Join us to enjoy a competitive salary, benefits, and remote working within our impactful, mission-driven culture.