Lead CRO Engineer

Lead CRO program across the full user journey from landing to activation Design, build, and run multivariate experiments to improve conversion and signup quality Own the experimentation infrastructure: frameworks, stats, rollout decisions Use data and qualitative insights to identify high-leverage opportunities Build features and flows; full-stack engineering; ship code Collaborate with Marketing to align CRO with acquisition funnels Proven CRO/growth or software engineer with measurable conversion gains Detail-oriented with UX focus; CSS/React animations; comfortable with large experiments Deep understanding of consumer psychology and why certain words/layouts drive action Proficient in TS, React, Next.js, TailwindCSS, ShadCN, React Query, serverless Knowledge of B2B SaaS growth & experimentation stack: feature flags, CRM, event tracking Comfortable with quantitative rigour and qualitative instincts; know when to run interviews vs queries Fast-tracked to senior roles and responsibilities Ownership and autonomy in your work Equity participation Hybrid in-office/flexible work arrangement (London) Small, high-performance team culture Work with cutting-edge AI and growth loops