Senior Executive, Membership Marketing in London

CIBSE is the leading global body for building professionals, championing sustainability, innovation and building performance across the built environment. We empower and equip professionals with the expertise, guidance and standards needed to deliver safe, efficient and future-ready buildings. Through our leadership in decarbonisation, building performance and continuous professional development, we support a community dedicated to creating better places for people and the planet.

About the role

This role sits within the Marketing and Communications team and is responsible for delivering key membership marketing campaigns and journeys across acquisition, engagement, retention and progression. Working closely with colleagues across Membership, Marketing and Communications, the role will take ownership of campaigns from planning through to execution, optimisation and reporting. This includes developing targeted and relevant communications, managing marketing automation and segmentation, analysing performance and using insight to continually improve the member experience and campaign results. Reporting to the Head of Membership Marketing, this is a hands-on role for someone who is commercially and analytically minded, confident managing multiple projects and comfortable working with stakeholders at all levels. The successful candidate will be expected to take ownership of their campaigns, bring ideas and recommendations to the table, and use data and testing to improve performance. It provides an opportunity to play a key role in growing and retaining CIBSE's membership, while developing expertise across lifecycle marketing, marketing automation, campaign strategy and digital communications. You will be part of an ambitious and supportive team that values collaboration, continuous improvement and a test-and-learn approach.

What you will do

• Own and deliver end-to-end membership campaigns, across acquisition, retention, engagement and progression, from planning through to execution, optimisation and reporting.
• Take ownership of key member journeys and lifecycle communications (e.g. onboarding, upgrade pathways, retention lifecycle).
• Deliver campaigns across both B2C and B2B audiences, adapting campaign objectives, messaging, channels and customer journeys to reflect the needs and behaviours of different audiences.
• Manage and optimise marketing automation programmes in Salesforce/Pardot.
• Lead the development and optimisation of segmented email campaigns and newsletters.
• Analyse campaign performance and provide reporting, including actionable insights, recommendations and applying course correct, where required.
• Collaborate with internal stakeholders to align campaigns with organisational priorities.
• Support the development of campaign strategy and messaging frameworks.
• Brief and manage internal/external resources (design, content, digital).
• Ensure consistency in brand, tone of voice, and messaging across all membership communications.
• Contribute to testing strategies (A/B testing, audience segmentation, content optimisation).

The above is not an exhaustive list of duties, and you will be expected to perform other related tasks to meet the overall business objectives of the Institution.

What you will need to be successful

• Proven experience delivering both B2C and B2B integrated marketing campaigns.
• Strong experience in marketing automation (Pardot/Salesforce).
• Ability to interpret data (reporting and analysis) and optimise campaigns.
• Experience in segmentation and lifecycle marketing.
• Strong copywriting and content development skills.
• Ability to manage multiple projects simultaneously and independently.

What CIBSE offers you

• A supportive and friendly working environment.
• Starting at 25 days Annual Leave increasing to 27 days with length of service, plus Bank Holidays.
• Contributory Pension Scheme.
• Family Friendly Leave.
• Three paid volunteering days per year.
• Annual Travel Season Ticket Loan.
• Cycle to Work Scheme.
• Life Assurance.
• Private Medical Insurance.
• Cash Plan – cash back for routine healthcare treatments.
• Health and Wellbeing benefits, including Mental Health support, and access to a 24/7 GP service.
• Shopping portal, rewards programme, and gym discounts.
• Referral Scheme.
• Hybrid Working with 3 days minimum in the office.
• The chance to be part of an evolving, changing and exciting organisation that genuinely does change the world.

The pay for this role is: up to £35,000 per year (Farringdon). We reserve the right to close this advert early if we receive sufficient applications. If you think you are a great fit for this role, please submit your application at the earliest opportunity. The Institution is an equal opportunities employer. The post-holder will be expected to adhere to and support the Institution’s commitment to diversity, equality and inclusion.

Closing Date: The deadline for all applications is 16 October 2026.