CRO Manager

Harnham; Greater London; Hybrid; GBP 30,000 - 50,000; Full time

Job summary

Harnham in London is seeking an Experimentation (CRO) Manager to lead and deliver CRO programmes, shaping testing strategies and driving measurable digital performance for a diverse client portfolio.

You will design and implement A/B and multivariate tests on Optimizely, AB Tasty, or VWO, analyse results with GA4, and translate insights into clear business recommendations for stakeholders.

Qualifications

• Proven CRO/experimentation experience across digital channels.
• Strong analytics mindset and data-driven decision making.
• Understanding of UX and conversion optimisation principles.
• Experience translating insights into business recommendations.

Responsibilities

• Lead and deliver experimentation programmes for client projects.
• Develop CRO strategies and testing roadmaps.
• Build and manage client relationships and programme management.
• Analyse user journeys to identify conversion barriers using analytics.
• Design, implement, and evaluate A/B and multivariate tests on leading platforms.
• Monitor live experiments and deliver actionable recommendations.
• Present findings and strategic recommendations to stakeholders.
• Mentor team members and promote best practices in experimentation.

Skills

CRO

Experimentation

Digital analytics

GA4

UX understanding

Paid media

Stakeholder collaboration

Communication

Tools

Optimizely

AB Tasty

VWO

Job description

Experimentation (CRO) Manager

London, Hybrid

Salary up to £50,000

This is an opportunity to join a growing digital optimisation business where experimentation, analytics, and customer insight sit at the heart of decision-making. You'll play a key role in shaping testing strategies, improving digital experiences, and driving measurable results for a diverse client portfolio.

The Company

They are a specialist digital consultancy that helps organisations improve online performance through experimentation, digital analytics, and customer insight. Working across websites, applications, and digital customer journeys, they use data-led recommendations to improve user experience and conversion performance. They have built a collaborative and innovative culture where learning, development, and professional growth are actively encouraged.

The Role

You will lead and deliver experimentation programmes that help clients improve digital performance and customer outcomes.

• Developing and executing experimentation and CRO strategies for client projects.
• Building strong client relationships and supporting ongoing programme management.
• Analysing user journeys and identifying conversion barriers using analytics and behavioural insight tools.
• Designing, implementing, and evaluating A/B and multivariate tests using leading experimentation platforms.
• Monitoring live experiments and delivering actionable recommendations to improve website performance.
• Presenting findings and strategic recommendations to stakeholders and clients.
• Supporting and mentoring team members while promoting experimentation best practice.
• Keeping up to date with developments across experimentation, analytics, UX, and digital optimisation.

Your Skills & Experience

• Strong commercial experience within CRO, experimentation, digital analytics, or a related optimisation function.
• Hands-on experience with experimentation platforms such as Optimizely, AB Tasty, VWO, or similar tools.
• Experience using GA4 and digital analytics platforms to uncover insights and guide testing strategies.
• Good understanding of UX principles, customer behaviour, and conversion optimisation techniques.
• Knowledge of paid media channels and digital acquisition performance.
• Ability to manage multiple projects and collaborate effectively with technical and non-technical stakeholders.
• Strong communication skills with the ability to translate data into clear business recommendations.