---
title: 'Head of Growth & Acquisition at Prolific'
canonical: 'https://feeny.ai/job/head-of-growth-acquisition-prolific-united-states-6ef7zbj6vw3w'
type: 'job'
last_seen: '2026-11-08'
---

# Head of Growth & Acquisition at Prolific 

- **Company:** Prolific 
- **Location:** United States
- **Work type:** remote
- **Posted:** 2026-10-27
- **Last confirmed live:** 2026-11-08
- **Apply:** https://job-boards.eu.greenhouse.io/prolific/jobs/5017685101

## Job description

Head of Growth and Acquisition

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 prodcts and models.

## The role

As our Head of Growth & Acquisition, you'll lead the strategy and execution behind how Prolific attracts, activates, engages and retains the participants powering our platform. You'll own growth across the participant lifecycle, ensuring we have the right supply to meet evolving customer demand while delivering a great participant experience.

This is an opportunity to build and scale a growth engine at a pivotal stage of Prolific's journey. You'll challenge existing ways of working, develop new acquisition channels and partnerships, experiment with different approaches and build the systems and capabilities needed to support our next phase of growth.

You'll lead a multidisciplinary team spanning growth marketing, participant recruitment, partnerships and community. Working closely with Product, Engineering, Data Science and Operations, you'll combine strategic thinking with hands-on execution to turn new ideas into scalable growth initiative

## What you’ll be doing in the role

- Define and deliver Prolific's participant growth strategy across acquisition, activation, engagement and retention.
- Build and scale a sustainable growth engine, developing new channels, improving existing processes and driving innovation.
- Own our participant partnerships strategy, identifying and scaling relationships that unlock new geographies, skills and participant segments.
- Lead and develop a multidisciplinary team across growth marketing, recruitment, partnerships and community.
- Use growth metrics, cohort analysis and marketplace data to understand participant behaviour, identify opportunities and drive performance.
- Translate customer demand into acquisition and growth plans, ensuring the right participants are available to meet marketplace needs.
- Identify, test and scale new growth initiatives, building business cases and securing investment where needed.
- Partner with Product, Engineering and Data Science to improve participant journeys, automate processes and build scalable solutions.
- Drive a culture of experimentation, ownership and continuous improvement across the function.

## What you’ll bring to the role

- Experience in operations, ideally in marketplace or platform environments.
- Significant experience leading growth, acquisition or marketplace operations within a consumer, technology or marketplace business.
- Strong understanding of acquisition, activation, engagement and retention, with a track record of delivering measurable growth outcomes.
- Proven experience building and scaling growth functions, channels or operational capabilities, ideally in a fast-moving or evolving business.
- Strong analytical and commercial judgement, with experience using funnel metrics, CAC, LTV, cohort analysis and marketplace data to inform decisions.
- Experience developing strategic partnerships, improving acquisition channels and scaling user or participant growth.
- Proven people leadership experience, with the ability to develop multidisciplinary teams and drive accountability for performance.
- A strategic but hands-on approach, with the ability to identify opportunities, test ideas, build business cases and deliver results independently.
- Experience partnering with Product, Engineering and Operations to improve processes, leverage automation and create scalable solutions.
- Strong communication and stakeholder management skills, with the confidence to influence senior leadership and challenge existing ways of working.

Experience in two-sided marketplaces, AI data platforms or distributed workforce businesses would be particularly valuable, but we're equally interested in candidates who have built successful growth engines in other marketplace environments.

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 breath 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.

Links to more information on Prolific

[Benefits](https://www.notion.so/prolific/dbc97f2b3ff24f1bb6fa834a2c9c3283?v=4f874e88e46a4f54afd8bf62f1db19ed&p=9f2c1de05dfa43338d48c20362bfead1&pm=c)

[External Handbook](https://www.notion.so/prolific/dbc97f2b3ff24f1bb6fa834a2c9c3283?v=4f874e88e46a4f54afd8bf62f1db19ed)

[Website](https://www.prolific.com/)

[YouTube](https://www.youtube.com/@JoinProlific)

Privacy Statement

By submitting your application, you agree that Prolific may collect your personal data for recruiting and global organization planning. Prolific's [Candidate Privacy Notice](https://www.notion.so/prolific/Policy-Privacy-Notice-for-Candidates-f94a136a67544388b4888bc436451b57) explains what personal information Prolific may process, where Prolific may process your personal information, its purposes for processing your personal information, and the rights you can exercise over Prolific use of your personal information.

## About Prolific 

## Company Overview
- **One-liner**: Prolific is a technology company that provides a platform for collecting high-quality, human-derived data from verified participants, used by AI developers, researchers, and organizations for AI training, surveys, and user research.
- **Entity Type**: Private (Series A)
- **Headquarters**: London, UK (with a New York City hub and remote presence across the US and UK)
- **Founded**: 2014
- **Founders**: Phelim Bradley, Ph.D. (CEO & Co-founder)

## Core Business
- **Primary industry/industries**: AI data services, market research, academic research, human-in-the-loop AI
- **Target customers**: B2B — AI developers, academic researchers, product teams, and enterprise organizations (35,000+ data collectors use the platform)
- **Mission or purpose statement**: "To help thinkers, creators, and innovators make the impossible possible" by building a future where human insight drives breakthroughs in science, technology, and society.

## Products & Services
- **Prolific Platform**: A web-based platform that connects researchers and AI developers with a pool of 200,000+ active, verified participants for online studies. Studies launch every 2 minutes, with a 97% completion rate and data sets delivered in under 2 hours on average.
- **AI Training & Evaluation**: Human feedback from representative populations for preference tuning, safety evaluations, and benchmarks. Used to defend AI model quality.
- **Research Services**: Accelerated research through insights from verified participants, supporting behavioral research, surveys, and user testing.
- **Participant Marketplace**: A paid participant side where individuals can join paid online studies with flexible scheduling and real payouts.

## Market Standing
- **Valuation/Market Cap**: Not publicly disclosed
- **Key Metric**: $32 million in Series A funding (secured in 2023)
- **Notable Investors/Partners**: Series A funding of $32M (lead investors not specified in available data); trusted by thousands of organizations including cutting-edge AI startups and Ivy League universities.
- **Growth Signals**: 
  - Expanded into the US with a New York City hub (announced February 2024)
  - 172 open job listings across multiple departments (as of mid-2026)
  - 700+ studies launch every day on the platform
  - Participants from 38+ countries speaking 80+ languages
  - 10,000+ organizations use Prolific
  - 35,000+ data collectors use the platform

## Competitive Advantages
- **Verified participant pool**: All participants are actively vetted, verified, and fairly paid, ensuring high-quality, trustworthy data without the noise of typical survey platforms.
- **Speed and reliability**: Data sets are delivered in under 2 hours on average, with a 97% study completion rate — a significant moat for time-sensitive AI and research projects.
- **Representative populations**: Ability to source diverse, representative participant pools for AI safety evals and benchmarks, critical for regulatory compliance and model defensibility.
- **Trusted brand**: 10 years of operation, trusted by leading academics, AI developers, and Ivy League universities.

## Strategic Focus
- **AI and human data**: Continuing to build the "biggest pool of human-derived data in the world" with a focus on powering AI training, safety evaluations, and benchmarks.
- **US expansion**: Opening a New York City hub and hiring across the US (San Francisco, Seattle, New York) signals a major push into the North American market.
- **Product development**: Active hiring for product, engineering, data science, and AI research roles indicates ongoing platform innovation and scaling.
- **Enterprise growth**: Hiring for Strategic Customer Success Managers, Solutions Engineers, and Strategic Account Executives suggests a focus on enterprise and strategic accounts.

## Why Work Here
- **Remote-first culture**: Prolific is remote-first with flexible work arrangements. Employees report high satisfaction with working location freedom (FlexScore data). Regular company-wide and team meet-ups, plus an annual in-person get-together.
- **Autonomy and flexibility**: 81% of employees feel they have complete autonomy over their work; 83% are happy with flexible hours; 78% report good work-life balance.
- **Benefits**: Home office budget for new joiners with annual top-up, personal learning and development budget, share options, and competitive benefits (86% employee satisfaction with benefits).
- **Diversity and inclusion**: Strong DEI focus with a formal Diversity, Equity and Inclusion Monitoring statement; a culture that celebrates differences and removes barriers.
- **Growth opportunity**: Join a fast-scaling business backed by $32M in Series A funding with a clear mission and strong product-market fit.
- **Culture principles**: "We care deeply about our customers," "We embrace change," "We aim high," "We win together," "We make every minute count," "We are optimistic and find a way."
- **Hiring process**: Structured 4-stage process (talent call, hiring manager interview, panel interview with task compensation, final principles interview) with feedback surveys to continuously improve.

## Sources
1. [prolific.com](https://www.prolific.com/)
2. [prolific.com/about](https://www.prolific.com/about)
3. [prolific.com/careers](https://www.prolific.com/careers)
4. [job-boards.greenhouse.io/prolific](http://job-boards.greenhouse.io/prolific)
5. [linkedin.com/company/prolific-com](https://www.linkedin.com/company/prolific-com)

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