Jobs & Volunteer Positions

Job Description- Individual Giving Manager

Salary:                             £40,000 -£45,000 PRO RATA for 0.6 FTE £24,000 to £27,000 per annum 21 hours a week

Contract length:            Permanent

Location:                        Thames21’s main office at the Guildhall, City of London; we also offer hybrid working

Responsible to:             Head of Fundraising

 

About Thames21:

Thames21 is an environmental charity that works with communities to restore and look after rivers, water, and nature across London and the Thames Basin.

Diversity at Thames21

Thames21 is committed to building a diverse and inclusive organisation that reflects the communities we serve across London and the Thames Basin. We welcome applications from people of all backgrounds, cultures, and lived experiences.

Purpose of the job:

 We are seeking a results-driven and ambitious Individual Giving Manager to lead and grow our individual giving programme from the ground up. This role will deliver inspiring campaigns that boost engagement and drive unrestricted income, helping Thames21 achieve its mission. You’ll join a successful and ambitious fundraising team to support the charity’s growth.

Main duties and responsibilities

Campaigns & Income Growth

  • Plan, establish, and deliver Individual Giving at Thames21 to maximise unrestricted income.
  • Develop and deliver digital marketing campaigns (social media, e-newsletters) to acquire, retain, and upgrade donors.
  • Design and deliver major campaigns such as Christmas/end-of-year giving and Earth Raise in Year 1.
  • Produce high-impact, supporter-focused copy for appeals, landing pages, forms, and stewardship content.
  • Maintain brand-consistent collateral, templates, and thank-you materials.
  • Collaborate across teams to identify IG opportunities and create engaging stories backed by impact data.
  • Achieve growth from five- to six-figures over 3 years
  • Use test-and-learn approaches to refine campaign performance and donor engagement.

 Supporter Journeys & Stewardship

  • Ensure Donorfy is configured to support individual giving, maximise income, and strengthen relationships, in consultation with the CRM Manager.
  • Design and implement personalised supporter journeys via digital channels (e.g. Mailchimp), with timely follow-ups and tailored messaging.
  • Improve retention and upgrade rates using targeted communications and segmentation.
  • Ensure high-quality donor touchpoints align with organisational messaging.
  • Provide stewardship for community and sports fundraising
  • Collaborate on planning and delivery of donor and supporter stewardship events and initiatives.

Data, Insight & Compliance

  • Conduct audience research with Communications and Engagement teams to inform campaigns.
  • Use segmented data to deliver robust analysis and guide decisions.
  • Track and report on KPIs, income, ROI, and retention.
  • Maintain GDPR/PECR compliance and fundraising best practice.
  • Liaise with Finance on acknowledgements, reporting, and Gift Aid.
  • Stay ahead of sector trends and apply new ideas to improve performance.
  • Collaborate with the CRM Manager to ensure data integrity and effective segmentation.

 Other Duties

 This job description cannot cover every issue or task that may arise within Thames21. At various times the post-holder will be directed to carry out other reasonable duties in support of other Thames21 activities that are consistent with those in this Job Description.

For more information and how to apply, please see the attached link to the Job Description IGM0925a

  • Closing date is 5pm on Monday 20th October 2025.
  • Interviews to be held Thursday 6th and Friday 7th November, subject to change

We appreciate the time you will have taken to apply to this role, and we do appreciate that it is disconcerting when you don’t hear back from a role you have applied for. However, due to the high number of applications we expect to receive, we are unable respond to or give feedback on individual applications, but we do want to be able manage expectations. Therefore, if you do not hear from us within 4 weeks of the closing date, please assume that your application has not been successful on this occasion.

For more information on Thames21, please visit our website at www.thames21.org.uk