Senior Marketing Manager

RSMB is looking for an enthusiastic Senior Marketing Manager to join the team based in London (Hybrid – 2 days per week in the office). You will join us on a full-time, permanent basis and in return, you will receive a competitive salary of up to £62,000 per annum, based on experience.

RSMB is a leading company specialising in media measurement solutions. We work with a wide range of clients delivering both long-term contracts like Barb (UK TV audience measurement) and RAJAR (Radio audience measurement), and ad hoc projects. We are proud that we have been a Barb TV audience measurement contractor since 1989 and a RAJAR contractor since 2007. Our team of around 50 people are based in Central London, and we are currently operating hybrid working: splitting the week between home and office working.

The Senior Marketing Manager role:

This is a fantastic opportunity to contribute to the next phase of growth for Fusion—our SaaS platform solving the challenge of siloed data in the media and enterprise space.

You’ll play a key role in developing and delivering product-focused marketing, shaping how Fusion is positioned and communicated across channels, and ensuring we reach the right audiences with the right messages. This hands-on role spans brand, product, content, and demand generation—crafting compelling value propositions, producing high-impact sales materials, and running campaigns that drive awareness and lead generation.

Benefits you will receive as our Senior Marketing Manager:

• Pension scheme
• 25 days holiday per annum (rising to 30 days)
• Private medical insurance
• Season ticket loan
• Group life and permanent health insurance.

Key responsibilities as our Senior Marketing Manager will include:

Strategic Marketing & Brand Awareness 

• Building and executing marketing plans that raise Fusion’s profile across media and enterprise audiences
• Turning Fusion’s value proposition into clear, compelling stories that resonate with strategists, data leads, and decision-makers

Sales Enablement 

• Creating on-brand, high-impact collateral: one-pagers, meeting decks, case studies, and email templates
• Standardising messaging across verticals to ensure consistent, effective outreach

Demand Generation 

• Running targeted campaigns that drive inbound interest and warm up priority accounts
• Supporting account-based marketing efforts and collaborating on thought leadership and webinar strategies

Content & Channel Management 

• Overseeing content creation across formats, from social posts to videos to long form articles
• Maintaining and optimising our CRM (HubSpot) and website (Webflow) to ensure clean segmentation and seamless campaign execution

What we are looking for in our Senior Marketing Manager:

• 5+ years' experience in B2B marketing, with a strong track record in SaaS or tech product environments
• Proven ability to simplify complex propositions and build messaging that drives commercial outcomes
• Hands-on experience with demand generation, sales enablement, and ABM
• Strong content creation skills - from social media to decks to product messaging
• Confident with tools like HubSpot, LinkedIn, Canva, and Webflow (or similar)
• Highly organised, self-motivated, and comfortable working in a small, fast-paced team
• A passion for the world of media, data or digital innovation is a big plus, in a nutshell, you’re strategic, proactive, creative, and technically adept.

What you’ll get in return as our Senior Marketing Manager:

• The opportunity to shape and scale a SaaS product solving real-world data challenges
•  Exposure to top-tier clients and cutting-edge work in media, research and analytics
• Hybrid working model (2 days per week in our Central London office)
• Autonomy and ownership in a collaborative, agile and experienced team
• 25 days holiday (rising to 30), private medical insurance, pension, season ticket loan, and more

Please note: We are not accepting agency applications for this role. Applicants must be eligible to work in the UK.

If you feel you have the skills and experience to become a Senior Marketing Manager in this exciting role, then please click “apply” now – We'd love to hear from you!