Growth Product Manager

Who are PortSwigger PortSwigger exists to enable the world to secure the web. We build the tools practitioners trust, the knowledge that trains security professionals, and a community that makes anyone who cares about security better — so anyone can make the internet safer. Our products are crafted with care, backed by deep research, and we lead through generous innovation: winning by setting the bar higher and sharing what we create, turning commercial success into wider positive impact. Our culture didn't happen by accident — it was built deliberately, and it's something we protect with the same care we put into everything we make. We default to trust — brilliant people doing brilliant work, free from micromanagement. We aim for excellence, and we do it with care; performance and compassion go hand in hand. Joy, mastery and purpose belong together here — and if the work stops feeling good, we take that seriously. The Product tribe shapes what we build and why. Product teams turn customer insight and research into clear product direction, fast experiments and polished, useful experiences. The tribe is about answering the tough questions — what to build, for whom, and how we measure success. What you'll be doing own difficult, ambiguous product growth problems and turn incomplete information into measurable customer and commercial outcomes. identify where growth is constrained across acquisition, activation, adoption, retention, expansion, monetisation, pricing, packaging, positioning, or market share. define target outcomes, leading indicators, success metrics, guardrail metrics, stopping criteria, and follow-up decisions for growth work. create fast, credible learning loops through pragmatic experimentation, including prototypes, narrow launches, manual approaches, or temporary solutions where appropriate. work closely with engineering, design, data, marketing, sales, customer success, and leadership to align around shared problems, explicit trade-offs, and proportionate routes to learning. translate product behaviour into commercial value, using customer insight, behavioural data, funnel analysis, cohort patterns, and experiment results. make risks, dependencies, uncertainty, evidence quality, and trade-offs visible early, especially where growth experiments touch technical, operational, or security constraints. adapt plans when evidence changes, priorities move, or resources are redirected, keeping momentum without becoming attached to one solution. kill, narrow, pivot, scale, remove, or replace work based on evidence and explicit follow-up decisions. hold a high performance bar by creating organisational clarity, moving with urgency without recklessness, and making the people around you better through clear thinking, generous credit, and constructive challenge. Requirements personally drive measurable growth for a software product, with clear evidence of commercial impact rather than only feature delivery, traffic…