Prolific

Security Engineer

• Monitor for security threats, vulnerabilities, and incidents across our infrastructure, applications, and tooling.
• Triage, investigate, and respond to security alerts using SIEM tooling (e.g. Datadog).
• Help maintain and improve our endpoint security, vulnerability scanning (e.g. Snyk), and cloud security posture across GCP and AWS.
• Work hands-on with cloud infrastructure — including Kubernetes and Terraform/IaC — to identify and remediate security risks.
• Support incident response efforts, contributing to containment, recovery, and post-incident analysis.
• Assist with penetration testing coordination and remediation tracking.
• Support the maintenance of ISO 27001, SOC 2, and Cyber Essentials certifications, helping keep documentation and evidence audit-ready.
• Contribute to external audit preparation, gathering evidence and coordinating with internal teams.
• Help maintain security policies, procedures, and guidelines, ensuring they stay current and relevant.
• Assist with GDPR and data privacy requirements, working with legal and our DPO as needed.
• Help integrate security into CI/CD pipelines, code review processes, and infrastructure-as-code workflows.
• Work with engineering and platform teams to promote secure development practices and cloud security best practices.
• Contribute to security awareness efforts across the business.
• Help identify and assess emerging threats and vulnerabilities, contributing research and recommendations to the wider security function.
• Monitor trends in the cyber threat landscape and share relevant insights with the team.

Security & Compliance Engineer

Artificial Intelligence

• Completing AI training tasks such as analyzing, editing, and writing in Dutch
• Judging the performance of AI in performing Dutch prompts
• Improving cutting-edge AI models

AI Trainer – Advanced Dutch Fluency

Operations

• Lead, coach and develop a team of 3–5 TechOps specialists, running regular 1:1s, setting clear goals, and providing meaningful feedback that helps people grow.
• Own the TechOps roadmap — working with department leaders across Engineering, People, Finance and Security to understand their needs and translate them into a prioritised plan.
• Build strong relationships with stakeholders across the business, positioning TechOps as a proactive, strategic partner rather than a reactive support function.
• Drive hiring as the team grows, defining roles, raising the bar in interviews, and shaping the team you want to build.
• Foster a team culture of ownership, automation-first, process thinking, and clear documentation.
• Own and drive complex technical projects from problem identification through to delivery, including scoping solutions, evaluating trade-offs, and making recommendations.
• Act as the senior escalation point for the TechOps team, providing technical guidance and helping unblock issues across the stack.
• Design, build and maintain automation that reduces manual toil and scales our operations — from access provisioning to onboarding workflows and beyond.
• Take ownership of critical areas of our technical infrastructure and tooling, ensuring they remain secure, well-documented and fit for purpose as the company grows.
• Support and contribute to our information security and compliance programme, working closely with our Information Security and Compliance teams to maintain certifications like ISO 27001, SOC 2 and Cyber Essentials.
• Manage supplier relationships and budgets, ensuring we get value from our software stack and that renewals are planned and executed on time.
• Write and maintain clear, useful documentation that supports the team and the wider business.

TechOps Manager

• Own and drive technical projects from problem identification through to delivery, including scoping solutions, evaluating trade-offs, and making recommendations with minimal direction.
• Act as an escalation point for the wider TechOps team, providing technical guidance and helping unblock issues across the stack.
• Design, build and maintain automation that reduces manual toil and scales our operations, from access provisioning to onboarding workflows and beyond.
• Take ownership of areas of our technical infrastructure and tooling, ensuring they remain secure, well-documented and fit for purpose as the company grows.
• Support and contribute to our information security and compliance programme, working closely with our Information Security and Compliance teams to maintain certifications like ISO 27001, SOC 2 and Cyber Essentials.
• Manage supplier relationships, ensuring we get value from our software stack and that renewals are planned and executed on time and within budget.
• Write and maintain clear, useful documentation that supports the team and the wider business.
• Provide direct technical support to Prolificos and help develop the processes and self-service tooling that reduce the need for it over time.
• Help mentor and support junior team members, contributing to their development and the overall growth of the team.

Senior TechOps Specialist

Growth Marketing

• The "Un-Marketing" strategy: You will drive growth through credibility. This could also mean organizing technical roundtables, sponsoring hackathons, engaging in Hugging Face/Discord communities, and distributing technical white papers that solve actual engineering problems.
• Technical storytelling: You will translate our platform’s capabilities into the language of the researcher. You aren't talking about "surveys"; you are talking about "reducing hallucination rates via high-quality RLHF" and "adversarial testing workflows."
• Full funnel ownership: You connect the dots between a researcher reading our documentation and a procurement deal for enterprise-grade data access. You will work lockstep with our sales and services team to accelerate deal velocity and develop deal opportunities.
• Precision performance execution: You will treat every channel—from technical newsletter sponsorships and paid social to programmatic outbound and AEO - as a laboratory. You bring deep fluency in performance marketing mechanics (bidding strategies, A/B testing, and conversion API integration). You prioritize pipeline quality over vanity metrics.
• Orchestrating signal-based GTM: You will move beyond generic ABM. You will build systems that ingest technical signals (e.g., new repo stars on GitHub, Arxiv paper publications, and funding rounds for foundation model startups) to trigger hyperrelevant, low-volume, high-impact outreach or digital marketing campaigns.
• AI-augmented execution: You will build your own stack. You’ll use AI to scrape public data, personalize outreach at scale, analyze channel health, and generate content variations. If you are doing manual data entry, you are doing it wrong.

Growth Marketing Manager

• Reviewing AI-generated responses to clinical scenarios and rating them for accuracy, clinical appropriateness, safety, and reasoning quality
• Comparing multiple model answers and selecting/justifying the best response
• Writing improved exemplars, rationales, or structured feedback to help models learn where they fall short

AI Trainer – Clinicians

General Counsel

• 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 labor and employment law, and worker classification
• Advise on broader commercial matters as they arise, including marketing, IP, and consumer issues.

Legal Counsel, Commercial

Research Engineer

• Serve as Prolific's technical research partner on customer engagements with AI labs and enterprise AI teams
• Advise and prototype bespoke solutions like evaluation methodology, rubric design, and data collection approaches
• Own methodology for projects - from scoping through delivery
• Build trusted relationships with customer research and engineering teams
• Surface patterns from customer work that should become platform capabilities
• Work with Services and Account teams to qualify opportunities
• Share learnings across the Research Engineering function
• Collaborate with product teams to translate research insights into practical applications
• Mentor team members on advanced AI concepts

Field Research Engineer

Product Designer

• You'll bring your varied Product career experience to bear to solve customer problems and create new opportunities for users to fall in love with Prolific.
• You'll raise the bar of our product - and Product team - by making bets and building products that customers love and which drive commercial value for our business.
• You will be an unblocker and simplifier of complexity: colleagues will bring you problems, and emerge optimistic, with solutions.
• You'll partner productively with Product Design, User Research, Analytics, and Engineering to find ways to deliver products in a test-learn-iterate fashion.

Senior Product Designer

• Completing AI training tasks such as analyzing, editing, and writing annotations
• Judging the performance of AI in performing
• Improving cutting-edge AI models

Security & Compliance Engineer

AI Trainer – Advanced Dutch Fluency

AI Trainer – Advanced Dutch Fluency

TechOps Manager

Senior TechOps Specialist

Growth Marketing Manager

AI Trainer – Clinicians

Legal Counsel, Commercial

AI Trainer – Clinicians

AI Trainer – Clinicians

AI Trainer – Clinicians

AI Trainer – Clinicians

Field Research Engineer

Senior Product Designer

AI Training Expert