Marketing Manager in London

Location: Hybrid

Function: Client Services

Reports to: COO / Head of Client Services

Direct reports: Marketing Executive

Growth responsibility: Supporting 20% organic client growth

Company: Ouma

About Ouma

We are Ouma. Ouma drives measurable growth for brands through boardroom-level marketing leadership and an on-demand expert network. We are an agile micro-agency with global reach, scaling what works and enabling sustainable growth for ambitious brands. We are your growth partner.

The Role

We’re looking for a commercially minded, strategically sharp and highly organised Marketing Manager to take ownership of a portfolio of Ouma clients. This is a hands‑on, high‑impact role spanning client management, marketing strategy, campaign execution, reporting, performance analysis and client growth. You’ll be responsible for building strong client relationships, creating and activating marketing plans, overseeing delivery across multiple channels and ensuring clients see measurable progress. You’ll work closely with internal teams, external partners and our expert network to deliver high‑quality marketing activity that drives real business outcomes.

Key Responsibilities

• Client Management

You’ll take responsibility for the day‑to‑day success of your accounts, partnering closely with the Client Services team to make sure clients feel supported, informed and confident. You will:

• Build trusted relationships with senior client stakeholders
• Manage client communication, expectations and challenges with confidence
• Lean into problems and take ownership of solutions
• Escalate only when necessary, bringing recommendations rather than just issues
• Keep projects moving at pace and ensure nothing drops
• Marketing Strategy & Planning

You’ll lead the development of marketing strategies and plans for your clients, helping them unlock growth through clear thinking, strong insight and practical execution. You will:

• Create annual marketing strategies and client plans
• Interrogate client briefs, growth challenges and commercial objectives
• Use research, audience insight and analysis to shape campaigns
• Bring strong generalist marketing knowledge across channels
• Brief internal teams and partners clearly on assets, content and deliverables
• Campaign Execution

You’ll oversee campaign delivery across paid media, content, organic activity, websites and partner channels. You will:

• Manage campaign set‑up, tracking, QA and delivery
• Oversee creative, content and copy briefing
• Support paid media delivery, optimisation and performance improvement
• Manage media partners and external specialists
• Ensure campaigns are delivered on time, to plan and to a high standard
• Track budgets, pacing and campaign performance against expectations
• Campaign Analysis & Reporting

You’ll be responsible for helping clients understand performance, progress and what needs to happen next. You will:

• Report on KPIs, attribution and business outcomes
• Present campaign performance clearly and confidently to clients
• Maintain regular weekly performance conversations
• Focus on meaningful commercial metrics rather than vanity metrics
• Use insight to recommend improvements and future opportunities
• Client Growth

You’ll play an important role in growing client accounts by spotting opportunities where Ouma can add more value. You will:

• Identify mutual growth opportunities for clients and the agency
• Support annual client growth through activation upgrades
• Contribute to 20% year‑on‑year revenue growth from client development
• Help activate the right expert support around each client
• Participate in at least one successful client pitch annually

What We’re Looking For

We’re looking for someone with a strong marketing brain, excellent client‑handling skills and the ability to keep multiple projects moving without losing quality or momentum. You’ll be a good fit if you have:

• Strong client management experience
• Confidence communicating with senior stakeholders
• Excellent project and operational management skills
• Experience using ClickUp or similar project management tools
• Broad marketing knowledge across lead generation and brand building
• Experience with marketing strategy, planning, research and segmentation
• Strong briefing skills across creative, content, copy and media
• Understanding of conversion tracking, GTM, testing, QA and troubleshooting
• Knowledge of Google Ads, Performance Max, Display, Video and PPC
• Experience or awareness of Meta, LinkedIn and TikTok Ads
• Understanding of SEO and CRM fundamentals
• Strong reporting, analysis and presentation skills
• Commercial awareness and the ability to spot growth opportunities

Key KPIs

Success in this role will be measured by:

• Annual marketing strategies created and activated for each client
• Contribution to 20% year‑on‑year client revenue growth
• Delivery of outstanding media activations that meet or exceed expectations
• Successful use of Ouma’s Expert Network to deliver client plans
• Participation in at least one successful client pitch annually

Our Behaviours

At Ouma, we are positive, optimistic, open, energetic and ambitious. We are kind, welcoming and inclusive. We value and look out for one another. Transparency, honesty and openness are our watchwords. We have growth mindsets — for the agency, for our clients and for ourselves. We learn to win. We practice, ask for feedback and always aim to improve. We are tenacious. We never give up. We empower people, enabling colleagues and clients to achieve more. We lean into challenges facing us, our clients and our colleagues. We work at pace and create positive momentum in everything we do. We are agile, adaptable and responsible. We deliver, even when the odds are stacked.

Why Join Ouma?

This is a brilliant opportunity for a capable Marketing Manager who wants to work closely with ambitious brands, take ownership of meaningful client growth and be part of a fast‑moving agency with a strong vision for the future. You’ll have the chance to shape strategy, lead delivery, work with expert partners and make a measurable impact across a portfolio of exciting clients.