Director, Conversion Rate Optimization

Responsibilities

• Own the CRO strategy and results for a portfolio of clients, with the goal of building a team under you to execute the work as demand grows
• Run A/B and multivariate programs where volume allows: hypothesis backlog, prioritization, test design, sample-size and duration math, QA, analysis, rollout
• Run research-led optimization for low-volume sites: blog post CRO improvements, heuristic audits, moderated user tests, session replay and heatmaps, on-site and post-conversion surveys, message testing, competitive teardowns
• Turn findings into specific, buildable recommendations (wireframes, copy, annotated mockups, acceptance criteria) and hand them to Siege designers and developers for implementation; QA what ships
• Measure impact honestly: test readouts at agreed confidence for testable sites; pre/post KPI reads with seasonality control for the rest; no p-values where they don't belong
• Build the practice: methodology, deliverable templates, tiering rules (when we test vs. recommend), tooling stack, pricing inputs, and case studies
• Support sales: scope CRO for prospects, contribute to proposal decks and calls, and run a fixed-scope CRO audit product for clients below the testing threshold
• Partner with SEO/GEO, Content, and Analytics teams so landing pages built for traffic are also built to convert, and so conversion tracking is in place before optimization starts
• Hire and manage CRO strategists and analysts as the practice grows

Requirements

• 6+ years in CRO or experimentation, with at least 3 years client-facing at an agency or consultancy
• Documented results on both kinds of site: powered A/B programs and low-traffic, research-led optimization (we will ask for examples of each)
• Fluency in GA4, a testing platform (VWO, Optimizely, Convert, or similar), session replay and heatmap tools (Hotjar, Microsoft Clarity, FullStory, Contentsquare), and a user-testing platform (UserTesting, Maze, Wynter)
• Working statistics: power, minimum detectable effect, peeking, Bayesian vs. frequentist reads, and when none of it applies
• UX and persuasion judgment: you can critique a page without data and be right most of the time, and explain why
• Strong writing and presentation: client recommendations that a CMO acts on and a developer can build from
• Enough HTML/CSS/JS and tag-management knowledge to QA tests and implementations
• Experience building a service, playbook, or team from zero is a strong plus (note: included in nice_to_have to avoid duplication)
• B2B SaaS and lead-gen experience is a strong plus; Shopify and ecommerce experience is a plus (note: included in nice_to_have to avoid duplication)

Preferred

• Experience building a service, playbook, or team from zero is a strong plus
• B2B SaaS and lead-gen experience is a strong plus
• Shopify and ecommerce experience is a plus