Web Testing

We are looking for a hands-on Web Testing & Optimisation professional to help grow and optimise our digital presence.

You will turn customer insight and behavioural data into structured experimentation that drives measurable improvements in customer experience and commercial performance.

Working across data, UX, and development, you will manage the optimisation process from identifying opportunities and developing hypotheses through to test design, implementation, analysis, and rollout.

This is a hands-on role working closely with digital product, commercial, marketing, and development teams to build a culture of evidence-led decision making.

Key Responsibilities

• Own the end-to-end web testing and optimisation programme across key digital properties.
• Develop and prioritise an experimentation roadmap aligned to customer and commercial goals.
• Design, build, QA, and analyse A/B and multivariate tests using Optimizely.
• Conduct UX research, including heuristic reviews, usability testing, heatmaps, session recordings, and customer journey analysis.
• Use GA4, BigQuery, Looker Studio, and similar tools to identify opportunities and measure performance.
• Translate data and research into clear UX recommendations, wireframes, hypotheses, and test briefs.
• Work closely with developers and product teams to ensure effective implementation of tests and UX improvements.
• Maintain a structured experimentation backlog and repository of test learnings.
• Analyse test results rigorously and communicate clear, actionable recommendations to stakeholders.
• Report on testing performance, key learnings, and commercial impact.
• Stay up to date with web testing, UX, CRO, analytics, and experimentation best practice.

What You'll Do

Web Testing & Experimentation

• Own the full testing lifecycle: ideation, hypothesis development, design, QA, launch, analysis, and rollout.
• Build and manage experiments in Optimizely, including targeting, segmentation, and traffic allocation.
• Prioritise experiments based on potential impact, customer value, and implementation effort.
• Ensure testing is statistically robust and results are clearly communicated.

UX & Customer Insight

• Identify friction, intent, and drop-off across key customer journeys.
• Use heatmaps, session recordings, funnel analysis, and user research to uncover optimisation opportunities.
• Produce UX audits, journey maps, wireframes, and recommendations.
• Collaborate with product and design teams to turn insights into improvements.

Analytics & Data

• Support the measurement framework for digital performance, including GA4, event tracking, and conversion goals.
• Build and maintain dashboards and reports for key conversion KPIs.
• Work with developers and tag management tools such as Google Tag Manager to ensure accurate data collection.
• Go beyond reporting to understand why performance changes and what should happen next.

Collaboration

• Work as an embedded member of the digital product team and participate in agile ceremonies.
• Partner with marketing, commercial, and customer service teams to align testing with business priorities.
• Communicate insights and recommendations clearly to technical and non-technical stakeholders.
• Help develop a culture of experimentation and evidence-led decision making.

Qualifications

• 5+ years’ experience in web testing, CRO, UX, or digital optimisation.
• Hands-on experience with Optimizely, GA4, and A/B testing.
• Strong analytical, UX, and problem-solving skills with a focus on measurable results.

Desirable Experience

• Experience in B2B, B2C, or ecommerce environments.
• Familiarity with BigQuery, Looker Studio, or similar data tools.
• Experience with personalisation, feature flagging, or experimentation platforms.
• Understanding of HTML, CSS, and JavaScript.
• Experience working within cross-functional agile teams.
• Background in UX design, human factors, digital product, or a related discipline.