Lifecycle Marketing Manager

About Prolific 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 2025 & 2024 and the Deloitte Technology Fast 50 in 2023.

Prolific

Building the biggest pool of quality human data in the world—for AI developers, researchers, and organizations.

crowdsourcingparticipant recruitmentonline researchaidata collectiondata labelingai traininghuman dataglobal participant poolai model development

P

prolific.com

51-200 employees

Software Development

London

2014

Privately Held

208k LinkedIn followers

Raised $33.5M

• Prolific’s self-serve motion is a core growth engine for Prolific. We’re looking for an experienced lifecycle marketer to scale and ship the foundations of our lifecycle programme: onboarding, activation, retention and reactivation across email and in-app, plus the product-qualified signals that tell Sales which accounts are worth a conversation.
• You’ll work with Product, Customer Success, Sales/RevOps and Product Marketing. We need someone who can get up to speed quickly, make sound calls with minimal direction, and deliver programmes, dashboards and documentation.
• This is not a traditional B2B SaaS marketing role. We’re looking for someone who has run lifecycle in a product-led, self-serve business, where users sign up and start on their own and marketing’s job is to drive behaviour in and around the product. Demand gen, MQL/SQL pipeline, events and sales-led nurture are not the right background.
• This is a full-time, 3 month fixed-term contract, with the potential to extend depending on business needs.
• Month 1: Diagnose and prioritise
• Audit current lifecycle programmes, journeys, segmentation and tooling (HubSpot, Pendo, Hex)
• Map the self-serve journey by customer segment and identify the biggest activation and retention gaps
• Agree a prioritised roadmap and success metrics with Growth Marketing, Product and Customer Success
• Ship at least one quick win, such as a fix to an existing onboarding email or in-app message
• Months 2-4: Build and launch and document
• Design, build and launch onboarding and activation programmes across email and in-app (Pendo), aimed at faster time to first value
• Launch retention, top-up and reactivation/win-back flows for lapsed and dormant users
• Define PQL and expansion signals with Sales/RevOps: behavioural thresholds, validation against conversion outcomes, and a CRM handoff process
• Start a structured experimentation programme across onboarding, email and in-app
• Report on results, learnings and experiment outcomes
• Document journeys, segmentation logic, triggers, PQL definitions, naming conventions and
• 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.

• 5-7 years in lifecycle, CRM, retention or growth marketing at a product-led / self-serve company, with a track record of moving activation, retention or expansion metrics (not just sending campaigns)
• Prior contract, consulting or agency experience, or a clear record of delivering scoped work independently to a deadline
• Hands-on ownership of lifecycle programmes for a freemium, free-trial or pay-as-you-go funnel
• Strong experience with email/CRM platforms (HubSpot or equivalent) and in-product messaging tools (Pendo, Appcues, Intercom, Braze, Customer.io, Iterable or similar)
• Experience defining activation, building behavioural segments and triggers, and using product usage data to drive messaging
• Analytical fluency: cohort analysis, activation and retention curves, funnel conversion, LTV. You can run your own analysis in HubSpot/Hex or equivalent without a data team
• Experience designing and running experiments, and knowing which results to trust
• Experience partnering with Sales/RevOps on PQL or usage-based handoff
• A clear communicator who can prioritise, push back and manage stakeholders without needing close supervision
• Comfortable with ambiguity in a small, high-output team

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