Senior Product Engineer (Agent Training and Evals)

Senior Product Engineer (Agent Training and Evals)

Engineering

Prolific

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 a Senior Product Engineer, you'll be one of the early engineers in our Agentic Training & Evals team.

You'll build the infrastructure that lets us evaluate AI agents, alongside real human expert work in safe and secure environments.

This is a genuine 01 role. There isn't a well-established playbook or existing architecture for you to simply maintain. You'll have significant influence and ownership over the technical direction of the team and the products we build.

You'll work closely with engineering, product and AI research to turn ambiguous problems into scalable systems, and you'll see the impact of what you build directly.

What you’ll bring to the role

• Strong experience building scalable infrastructure or distributed systems in the cloud

• Solid understanding of how systems are deployed, scaled and secured

• Hands-on experience with evaluating AI models or agents

• Interest in how AI agents are trained, evaluated and improved

• Bonus: experience with image, video, or audio processing

• Strong product mindset with a focus on delivering business and customer value

• Comfort with ambiguity, and the ability to move quickly from idea to working system

• Strong communication and collaboration skills

• Python experience is useful, but not essential

What you’ll be doing in the role

• Solve hard problems around compute, orchestration, scaling, security and reliability

• Help develop approaches for training, benchmarking and evaluating AI agents

• Work with emerging agentic AI technologies and rapidly evolving models

• Make pragmatic technical decisions in a highly ambiguous environment

• Partner closely with product engineering and AI research to turn customer problems into working products

• Drive direct impact in a fast-moving, high-ownership, cross-functional team

Key Technologies

• Cloud Platfo