Online Growth Marketing Manager (In digital agency growing their data team)
Team: Data
Reports to: Head of Data
Location: Leeds
Type: Full-time, hybrid / flexible working
Salary: £30,000 to £45,000 DOA
About the Role
We’re looking for an Online Growth Marketing Manager to join the Data team in a leading digital agency and lead experimentation strategies that drive measurable improvements for our clients’ websites and apps. Working closely with Digital Analysts and cross-functional teams, you’ll design and deliver data-driven optimisation strategies based on detailed analysis and post-test insights. Your work will focus on improving conversion rates through structured testing, statistical analysis, and continuous experimentation. This role requires a systematic and analytical mindset, using industry-leading tools to develop and execute A/B testing strategies. You’ll collaborate with data specialists, experience design teams, and client stakeholders to maximise performance and deliver meaningful results.
Key Responsibilities
* Conversion Optimisation
o Improve and optimise client conversions through data-driven ideation, execution, reporting, and analysis.
* Experimentation & Testing
o Run A/B tests and experimentation programmes, developing hypotheses and recommendations for website improvements.
o Use qualitative and quantitative research to inform testing strategies.
* Quality Assurance
o QA test implementations before client previews to ensure accuracy and alignment with hypotheses.
* Reporting & Insights
o Report results, findings, and learnings to stakeholders and marketing managers.
o Provide actionable insights and recommendations to support client KPIs and performance targets.
* Continuous Optimisation
o Deliver ongoing recommendations to improve user experience and website performance through continuous testing.
* Cross-Team Collaboration
o Work closely with other marketing teams (e.g. SEO and PPC) to align optimisation strategies with wider marketing activity.
* Stakeholder & Client Engagement
o Present testing performance and strategy in internal meetings.
o Participate in client calls, meetings, and presentations.
o Deliver pre-campaign, mid-campaign, and post-campaign analysis.
* Additional Duties
o Support wider business needs where required, including training and additional tasks assigned by your manager.
Knowledge, Technology & Qualifications
* Degree in a relevant field or equivalent experience (e.g. Mathematics, Science, Research, Statistics, Marketing, Advertising).
* Experience designing and executing A/B testing and experimentation programmes.
* Familiarity with testing platforms such as Optimizely, VWO, Webtrends.
* Experience with analytics platforms such as Google Analytics.
* Basic knowledge of HTML, CSS, and JavaScript is beneficial.
Skills & Competencies
* Ability to use analytics, customer experience data, and research insights to drive experimentation strategies and conversion improvements.
* Ability to quality assure CRO campaigns and ensure high standards and timely delivery.
* Strong written and verbal communication skills with the ability to clearly present ideas and insights.
Personal Attributes
* Proactively challenges the status quo to drive improvement.
* Collaborates effectively across teams to achieve shared success.
* Open to new ways of working, ideas, and perspectives.
* Curious and proactive in learning new skills and industry developments.
Benefits
* 25 days holiday (+bh) increasing yearly to 30
* Birthday off
* Flexible working
* Life assurance and salary sacrifice pension
* Volunteering and wellbeing portal, perkbox discounts
Got what it takes to own this fantastic role? Apply now!
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