Prolific

About the Company

Prolific is a technology company building the biggest pool of quality human data in the world—and the ultimate platform to access it.

Over 35,000 AI developers, researchers, and organizations use Prolific to gather data from real, engaged participants—with a new study launched every 2 minutes.

Prolific has been ranked among the fastest-growing businesses in the Financial Times 1000 in 2024 and the Deloitte Technology Fast 50 in 2023.

Listed Jobs

Company Name

Prolific

Job Title

AI Engineer

Job Description

**Job Title:** AI Engineer **Role Summary:** Design, build, and ship scalable AI systems that collect and validate human-generated data, improving training, evaluation, and alignment of large language models. Lead technical strategy, mentor peers, and collaborate across data science, platform engineering, and research teams. **Expectations:** - Deliver production‑grade AI services that enhance human‑feedback pipelines. - Apply cutting‑edge research to real‑world problems while maintaining reliability and scalability. - Mentor and influence technical culture and best practices. **Key Responsibilities:** - Architect and implement AI solutions (e.g., fraud detection, quality assurance, participant‑task matching). - Develop and deploy LLM‑based agents for data tagging, evaluation judges, and experimental synthetic personas. - Design vector‑search pipelines, advanced profile representations, and scalable storage. - Build observability, evaluation, and monitoring for LLM performance and reliability. - Lead prompt engineering, fine‑tuning, and Retrieval‑Augmented Generation (RAG) initiatives. - Collaborate with cross‑functional teams to create end‑to‑end human‑AI interaction workflows. - Mentor junior engineers and set technical direction across the AI platform. **Required Skills:** - Strong background in Python (FastAPI, Django) and scalable service architecture. - Deep knowledge of modern AI engineering stack: RAG, vector databases, prompt engineering, fine‑tuning, evaluation frameworks. - Proven experience delivering AI/ML features that solve business problems. - Expertise in either software engineering & systems design or machine learning engineering & research. - Familiarity with ML frameworks (PyTorch, TensorFlow, Hugging Face). - Excellent problem‑solving skills and an experimental mindset. **Preferred / Bonus Skills:** - Experience with LLM orchestration (LangChain, LlamaIndex, DSPy, LangGraph). - Agentic system design, tool‑calling, and RLHF pipelines. - Human‑in‑the‑loop data annotation or synthetic data experience. - Building robust AI/ML monitoring and observability systems. **Required Education & Certifications:** - Bachelor’s or Master’s degree in Computer Science, Engineering, Machine Learning, or related field. - Relevant certifications in AI/ML or cloud services are a plus.

London, United kingdom

On site

17-12-2025

Company Name

Prolific

Job Title

Community Lead, Research

Job Description

**Job Title** Community Lead, Research **Role Summary** Lead the growth and engagement of Prolific’s academic and industry research community. Build authentic, grassroots relationships with researchers, cultivate advocacy networks, and shape community-led growth strategies that drive institutional adoption of the platform. **Expectations** - Create and nurture long‑lasting, trust‑based relationships that transform researchers into advocates. - Drive community expansion through tailored outreach, content, and events that meet real research needs. - Translate researcher pain points into actionable product and go‑to‑market insights. - Measure and report community health using engagement quality, advocate activity, and organic referrals. **Key Responsibilities** - Build 1:1 and 1:many relationships with researchers across disciplines, converting them into champions. - Develop and maintain a network of research champions at leading universities and institutions. - Produce high‑value content (methodology guides, best‑practice resources, case studies, data‑quality articles) that addresses researchers’ challenges. - Own the academic and industry events strategy: plan, coordinate, and represent Prolific at conferences, workshops, and webinars. - Facilitate online and offline community interaction through meetups, forums, and knowledge‑sharing webinars. - Establish direct feedback loops from researchers to GTM and product teams. - Track and analyze community health metrics to inform strategy and demonstrate impact. **Required Skills** - In‑depth knowledge of research methodologies in behavioral sciences, social sciences, and human‑computer interaction. - Proven track record building authentic relationships and driving advocacy within academic or industry research communities. - Experience creating bottom‑up growth programs that scale through individual champion influence. - Strong communication and content creation skills; ability to distill complex research concepts into clear, actionable materials. - Event planning and execution experience, including content curation and speaker management. - Ability to navigate both academic and corporate research environments with credibility. - Analytical mindset for measuring community engagement beyond vanity metrics. **Required Education & Certifications** - Bachelor’s degree (or higher) in psychology, sociology, research methods, or a related field. - Advanced degree (MSc, PhD) or extensive research experience preferred. - Proven record of peer‑reviewed publication or active engagement in research dissemination.

London, United kingdom

Remote

Senior

30-01-2026

Company Name

Prolific

Job Title

AI Trainer - Computer Scientist (UK)

Job Description

**Job Title** AI Trainer – Computer Scientist **Role Summary** Provide expert training and evaluation for AI models in computer science domains. Perform content analysis, editing, and writing tasks; judge model performance on programming, algorithms, data structures, and system prompts; and contribute improvements to AI capabilities through domain expertise. **Expectations** - Complete paid tasks requiring up to one hour of uninterrupted work. - Demonstrate strong attention to detail and sustained focus. - Maintain reliable, high‑speed internet and a suitable computer setup. - Use a PayPal account for receiving payments. **Key Responsibilities** - Review and edit AI‑generated computer science content. - Assess AI responses to programming, algorithm, data‑structures, and systems prompts. - Identify gaps and suggest enhancements to improve model accuracy. - Participate in skill verification tests and ongoing quality‑control activities. **Required Skills** - Solid foundation in computer science concepts (programming languages, algorithms, data structures, software systems). - Analytical and evaluative thinking for AI content. - Attention to detail, strong concentration, and time‑management. - Basic proficiency with digital tools and fast internet connectivity. **Required Education & Certifications** - Bachelor’s degree in Computer Science or a closely related field (or equivalent experience). - No mandatory certifications, but a proven track record in software engineering or computational thinking is preferred.

London, United kingdom

Remote

10-02-2026

Company Name

Prolific

Job Title

AI Training - Research Scientist (UK)

Job Description

**Job Title** AI Training – Research Scientist (Self‑Employed) **Role Summary** Perform AI training and evaluation tasks as a Domain Expert participant, applying research expertise to analyze, edit, and generate research‑focused content, assess AI performance on scientific prompts, and help improve cutting‑edge models for leading AI labs. **Expactations** - Complete a 10‑ to 15‑minute skills verification test. - Accept paid assignments requiring up to one hour of uninterrupted focus (many shorter). - Work remotely with a reliable high‑speed internet connection and a computer. - Receive payment via PayPal and manage self‑employment tax obligations. **Key Responsibilities** - Analyze, edit, and write research‑oriented content for AI training tasks. - Judge AI outputs on research design, methodology, and scientific reasoning. - Provide feedback to enhance model performance based on experimental expertise. - Maintain high attention to detail and data quality throughout tasks. **Required Skills** - Proven experience as a Research Scientist or in a closely related research role. - Strong grasp of scientific methodology, experimental design, and data analysis. - Ability to concentrate on complex tasks for up to one hour without interruption. - Excellent written communication and critical‑thinking skills. - Reliable high‑speed internet and computer access. - PayPal account for receiving payments. **Required Education & Certifications** - Minimum: PhD or equivalent terminal degree in a scientific discipline (e.g., biology, physics, computer science, psychology, etc.). - Relevant research publications or demonstrated research track record preferred.

London, United kingdom

Remote

10-02-2026