Prolific

Full-stack Engineer

• As a member of a cross-functional, stream-aligned team, you will work collaboratively with the teams’ engineering manager, product manager, designer, and up to 4-5 other engineers, including a tech lead
• Using agile software development practices and a product mindset, you will work as a team to plan, build and support software that our customers love
• You will be highly self-motivated and energetic and enjoy working in a fast-paced environment with a bias for action
• Collaborating with teams outside of product engineering, working closely with customers and understanding their needs
• Be happy working in all the major cloud providers: AWS, GCP & Azure
• With a You Build It, You Run It mindset, you will have intimate knowledge of our products from code commit through to production operation
• Supporting production systems with monitoring tools such as Datadog
• Strive for stable systems observability
• You will champion our principles, fuel a growth mindset by getting involved in communities and help improve our engineering culture
• Pushing the boundaries, questioning the status quo, ensuring what we are doing and what we are building has high value and impact for our users

Senior Software Engineer

Solutions Engineer

• As a Solutions Consultant, you will be a trusted advisor and strategic partner across the pre-sales customer journey—from initial discovery through to Closed Won.
• You will work alongside frontier AI labs and enterprise customers, ensuring they understand and believe in the value of Prolific's human data offerings.
• You will be the driving force behind building the trust and momentum needed to win their business.
• This role sits at the intersection of sales and technology—owning solution scoping, proposal design, and AE partnership from first discovery through Closed Won.
• You will hand off cleanly to our Services and Client Delivery teams.
• Conduct deep discovery sessions with AI researchers, technical program managers, and enterprise stakeholders to understand workflows, pain points, and strategic objectives.
• Deliver customized demonstrations and presentations that articulate value and competitive differentiation for both technical and non-technical audiences.
• Serve as the primary technical point of contact during the sales cycle, addressing complex questions related to data security, privacy, platform architecture, API integrations, participant quality and solution design.

Solutions Consultant

Backend Engineer

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

AI Trainer – Advanced JavaScript Developer

Software Engineer

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

AI Trainer – Advanced SQL Developer

Graphics Designer

• Evaluate two candidate designs (e.g., Google Slides, posters, or advertisements) on the same topic and determine which better meets professional standards.
• Judge candidates based on specific design dimensions, including readability, text density, information hierarchy, and overall professionalism.
• Review "before and after" style tasks to determine which AI output better satisfied a specific design edit or change request.
• Take part in new, narrow tasks aimed at refining how AI handles concise visual communication.

AI Trainer – Visual & Graphic Design Expert

Artificial Intelligence

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

AI Training Specialist

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

• 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.

Senior Software Engineer

Solutions Consultant

AI Trainer – Advanced JavaScript Developer

AI Trainer – Advanced SQL Developer

AI Trainer – Visual & Graphic Design Expert

AI Trainer – Visual & Graphic Design Expert

AI Training Specialist

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