Growth Marketing Strategist

The Growth Foundation; Greater London; On-site; GBP 70,000 - 100,000; Full time

Job summary

The Growth Foundation is seeking a Customer Growth Strategist in London to help global DTC/eCommerce brands optimise customer engagement and revenue through data-led strategies.

You'll work at the intersection of client strategy, data analytics and account management, analysing campaigns, designing experiments, and turning insights into practical recommendations for multi-market campaigns.

Qualifications

• Experience with international DTC/eCommerce brands.
• Strong analytical skills for interpreting customer data.
• Able to design and run experiments (A/B testing).
• Excellent client facing communication and relationship management.
• Commercial mindset linking marketing to revenue growth.

Responsibilities

• Manage global client relationships and identify growth opportunities.
• Analyse customer data to uncover trends and segments.
• Design and manage A/B tests; translate results into actionable recommendations.
• Optimize lifecycle campaigns across acquisition, retention, and reactivation.
• Collaborate with product and engineering to drive platform improvements.
• Present insights to clients and guide campaign delivery.
• Scale programs by testing new ideas and expanding successful initiatives.
• Influence product development with client feedback.

Skills

Analytical thinking

Client relationship management

eCommerce growth

CRM strategy

A/B testing

Campaign optimisation

Data storytelling

Tools

Shopify

Klaviyo

Job description

The opportunity

We're partnering with an exciting, fast-growing global marketing technology business that's transforming how some of the world's leading DTC and eCommerce brands connect with their customers.

Operating internationally, with a presence in London, New York and Miami, the business combines the intelligence of digital marketing with the impact of physical direct mail, helping brands reach customers who are no longer engaging through traditional digital channels.

Through innovative technology, customer data and intelligent experimentation, they're helping global consumer brands improve customer retention, drive reactivation and unlock measurable incremental revenue.

As the business continues its international growth, they're looking for a commercially minded, analytically strong Customer Growth Strategist to join their team in London.

This is a fantastic opportunity for someone who enjoys working with global brands, getting under the skin of customer data and using insight-led strategies to deliver real commercial results.

The role

Sitting at the intersection of client strategy, data analytics and account management, you'll work closely with a portfolio of leading international DTC and eCommerce brands, helping them maximise the performance of their customer marketing campaigns.

You will take a consultative approach to understanding each client's business, identifying opportunities across their customer lifecycle and developing data-led strategies to improve engagement, retention and revenue.

A significant part of the role will involve designing and managing A/B tests, analysing campaign performance and translating complex data into clear, actionable recommendations.

You will also act as a key strategic partner to your clients, building strong relationships and collaborating with internal data, product and engineering teams to deliver successful campaigns and continuously improve performance.

What you'll be doing

• Manage global client relationships: Act as a trusted strategic partner to leading international DTC and eCommerce brands, understanding their commercial objectives and identifying opportunities for growth.
• Analyse and identify opportunities: Dive into customer and campaign data to uncover trends, identify high-value segments and develop recommendations that drive incremental revenue.
• Design and manage experiments: Develop hypotheses, structure A/B tests and measure campaign effectiveness to understand what genuinely drives performance.
• Optimise customer lifecycle campaigns: Identify opportunities across customer acquisition, retention, reactivation, loyalty and repeat purchase.
• Turn data into strategy: Interpret performance metrics, including ROAS, response rates and incremental lift, and confidently present insights and recommendations to clients.
• Drive campaign delivery: Coordinate campaigns from initial strategy through to execution, working with internal teams to ensure successful delivery.
• Identify opportunities to scale: Use campaign results and customer insights to recommend new tests, optimise existing activity and expand successful programmes.
• Influence product development: Share client feedback and performance insights with internal product and engineering teams to help shape future platform improvements.

What we're looking for

We're looking for someone who combines strong analytical thinking with excellent client relationship skills and a genuine understanding of eCommerce growth.

You could currently be working in customer growth, CRM, lifecycle marketing, marketing analytics, client strategy or a commercially focused role within a MarTech business or specialist agency.

You'll ideally bring:

• Experience working with DTC or eCommerce brands, ideally within an international or multi-market environment.
• Strong analytical skills, with hands-on experience interpreting customer data, measuring campaign performance and identifying opportunities for optimisation.
• Practical experience of A/B testing and experimentation, including developing hypotheses, evaluating results and making data-led recommendations.
• A good understanding of CRM, customer lifecycle marketing, segmentation, retention and repeat purchase strategies.
• Experience managing client or stakeholder relationships, with the confidence to challenge thinking, present insights and influence decisions.
• A commercially minded approach, with an understanding of how marketing activity translates into customer value and revenue growth.
• Strong organisational and project management skills, with the ability to manage multiple campaigns and stakeholders.
• A proactive, curious and solutions-focused mindset, with a genuine interest in testing new ideas and continuously improving performance.

Experience with platforms such as Shopify, Klaviyo or similar eCommerce and CRM technologies would be advantageous.

You don't need previous direct-mail experience. We're much more interested in your ability to understand customer behaviour, work confidently with data and help brands make smarter commercial decisions.

Why consider this opportunity?

Work with leading global brands. Partner with ambitious international DTC and eCommerce businesses, helping them solve customer engagement and retention challenges across different markets.

Combine strategy with measurable results. Develop hypotheses, test ideas, analyse results and see the commercial impact of your recommendations.

Be part of a global growth story. Join an ambitious international MarTech business with a presence in London, New York and Miami, and the opportunity to contribute to its continued expansion.

Have real influence. Your insights will help shape client strategy, campaign performance and the ongoing development of the platform.

Explore an innovative marketing channel. Work at the intersection of digital intelligence, customer data and physical marketing, helping brands unlock new opportunities for growth.

The Growth Foundation Talent is deeply committed to building a diverse & inclusive workplace and welcomes applications from all sections of the community.