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Job Title


Senior CRM Manager


Company : Harnham


Location : slough, south east england


Created : 2025-09-10


Job Type : Full Time


Job Description

SENIOR CRM MANAGERUP TO £60,000 HYBRID – LONDON, 3 DAYS A WEEKPlease note, the company is unable to offer sponsorship and you must be a UK resident to applyCompanyThis growing retention agency is dedicated to helping ambitious ecommerce brands build lasting customer relationships. With a specialist focus on CRM and email marketing, the team of 11 partners with direct-to-consumer brands to deliver high-impact lifecycle strategies. They work exclusively with Klaviyo and Shopify, positioning themselves as true experts in their niche. Collaboration, accountability, and culture are at the heart of the business. With a new East London office and a people-first mindset, they’re proud of their vibrant, social environment and growth-focused outlook.The RoleThis agency is seeking a CRM leader to take ownership of retention strategy across a diverse client portfolio. You’ll manage and mentor a team of three CRM specialists, act as the go-to expert on Klaviyo, and oversee CRM execution across up to 20 ecommerce accounts.This is a hands-on leadership role where you’ll partner directly with clients to elevate their retention performance, while balancing team management, client strategy, and campaign optimisation.Key Responsibilities:Lead and mentor a team of 3 CRM specialists, ensuring consistent delivery across accounts.Act as the strategic lead for client CRM/retention programmes, advising on lifecycle strategies and optimisation.Oversee all CRM briefs and execution across 20+ client accounts.Own and report on CRM KPIs across accounts, ensuring measurable client growth.Drive campaign testing, measurement, and optimisation.Collaborate with account managers, designers, and copywriters to deliver best-in-class campaigns.Role RequirementsMust-haves:Strong Klaviyo expertise and enthusiasm (active in the community, e.g. events).Proven experience with ecommerce retention, ideally within Shopify.CRM leadership experience (managing at least one direct report).Strategic background in CRM, ideally across multiple accounts.Strong time management skills and ability to balance leadership with hands-on strategy.Nice-to-haves:Agency background or experience in a fast-growth ecommerce brand.Ambition to step into a Head of CRM role, with a roadmap for progression in place.