Growth Marketing Manager, Prolific
High-quality human-powered data at scale
Be an early applicant
High-quality human-powered data at scale
101-200 employees
Be an early applicant
101-200 employees
Company mission
To accelerate human understanding.
Role
Who you are
- You speak "Engineer": You might not write production code, but you understand the AI lifecycle. You know the difference between SFT and RLHF. You enjoy reading published research on complex topics
- You are an AI native builder: You don’t wait for Ops to build you a report. You are comfortable with tools like Clay, Zapier, Cowork, Skills or custom GPTs to hack together a workflow that gets the job done today, not next month
- Comfortable with change: You are a high velocity learner. The AI landscape changes weekly. You are relentless when it comes to keeping abreast of what’s happening in the model development space
- You are a commercial killer: While you love the tech, you are here to drive revenue. You are obsessed with pipeline contribution, conversion rates, and CAC efficiency. You treat growth as a science experiment where ROI is the only metric that matters
- Execution bias: You have a database of initiatives where you identified a problem, built the solution, and measured the impact - all without waiting for permission
What the job involves
- We aren’t looking for a standard "lead generator." We are looking for a technical growth marketing manager to support the GTM motion for the most critical layer of the AI stack - the human data that powers frontier models
- Your audience isn't a generic "marketing director." You are targeting the builders at the world’s leading AI labs. You understand that "Growth" in this sector doesn't mean spamming emails. It means demonstrating technical competency, signal based intent, and positioning Prolific as the inevitable infrastructure for safe and capable AI
- We believe the future of marketing is AI-native. You shouldn't just be marketing to AI companies. You should be operating like a team of five by utilising the latest technology to handle the grunt work, leaving you free to focus on high level strategy, creative execution and delivering outcomes
- 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
Our take
Founded in 2014, Prolific is a marketplace and data analysis company that provides researchers with a network of test participants. From eye-tracking to human-facing AI applications, Prolific’s network acts as both a recruiter for test participants and as a marketplace for researchers scientists to hire said participants.
Founded in 2014, it’s already used by the likes of Google, Stanford, Oxford and Kings College London Universities to test new AI products, providing “stress tests” for its clients. Prolific’s user base now counts over 2000 potential test subjects, whilst researchers leverage its network to launch surveys, tests and evaluation tasks every 2 minutes.
An indicator of Prolific’s success is maintaining of profitability for years after its initial Y Combinator investment. In 2024, it raised $32 million in Series A to maintain its healthy position. This funding will allow it to expand its operations.
Freddie
Company Specialist at Welcome to the Jungle
Insights
Company
Funding (1 round)
Jul 2023
$33.8m
Series A
Total funding: $33.8m
Company benefits
- Bank holiday swaps
- Enhanced sick pay
- L&D budget – £1000 per year
- 25 days annual leave + bank holidays
Company values
- We win together
- We care deeply about our customers
- We make every minute count
- We're optimistic and find a way
- We embrace change
- We aim high
Company HQ
Kings Cross, London, UK
Leadership
Phelim Bradley
(Co-Founder & CEO)Currently also Venture Partner at Pioneer Fund. Previously Dphil at Wellcome Trust Centre for Human Genetics, Bioinformatics Intern at Illumina and MPhil of Computer Biology at University of Cambridge.
Salary benchmarks
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Diversity, Equity & Inclusion at Prolific
- At Prolific, we want all of our employees, researchers, and participants to be included and so we commit to having ongoing discussions about diversity and inclusion and regularly look at areas where we can improve. This policy aims to: - treat all our employees fairly and respectfully, regardless of their job status, location, or work hours ⏰ - avoid any illegal discrimination based on age, disability, gender, gender identity, marriage or civil partnership, pregnancy and maternity, race or ethnicity, religion or belief, sexual orientation, and traveler status. These are protected by the UK Equality Act (2010), Ireland Employment Equality Act (2004), Americans with Disabilities Act (ADA) at the federal level and the New York State Human Rights Law (NYSHRL) at the state level. ⚖️ - refuse to tolerate any kind of illegal discrimination 🙅🏻♀️. This includes pay and benefits, work conditions, grievance and discipline handling, termination, redundancy, parental leave, flexible working requests, employment selection, promotion, training, and other opportunities for development.
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