Individual Giving Manager (Fundraising Team)

Individual Giving Manager, Fundraising Team

Job Description

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.

Person Specification

It is essential that in your application you give evidence or examples of your proven experience in each of the following criteria including the competencies.

Knowledge, skills and competencies:

Essential

• Proven experience in the charity sector, ideally in a hands-on role in a small/medium organisation.
• Track record of Individual Giving fundraising, including developing and managing fundraising systems and processes.
• Strong knowledge of Donorfy for segmentation, stewardship, and reporting.
• Proficient in digital fundraising platforms (e.g. JustGiving, Mailchimp), analytics tools (e.g. Google Analytics), and social media (LinkedIn, X, Instagram).
• Familiarity with direct debit and regular giving.
• Demonstrable success delivering multichannel fundraising or digital marketing campaigns and managing major appeals (e.g. Big Give).
• Familiarity with and openness to using AI to maximise impact.
• Solid understanding of GDPR, Fundraising Regulator guidance, supporter consent, and Gift Aid.
• Competent with Microsoft Office and online marketing tools.

Desirable

• Experience negotiating and managing external suppliers (e.g. designers).
• Experience targeting diverse audiences and stakeholders

Skills, Abilities and Behaviours

Essential

• Excellent fundraising copywriting and editing skills
• Confident in analysing and interpreting data to inform decisions
• Highly organised, able to manage multiple projects and competing deadlines
• Proactive problem-solver, able to work both independently and collaboratively
• Comfortable working in a fast-paced, mission-driven environment
• Able to work confidently across departments
• Empathy and understanding of supporter motivations and behaviour
• Understanding of and commitment to Thames21’s values and goals

Additional Information

• The post holder must be willing to occasionally work in the evening and at weekends
• 25 days paid annual leave are available pro rata plus public holidays
• Thames21 office is closed between Christmas and New Year in addition to annual
• Thames21 operate a flexitime system of working with hybrid working optional too
• Thames21 have an ‘Auto Enrol’ Workplace Pension Scheme with NEST 8% employer contribution
• 24/7 access to our employee assistance programme
• Laptop & Mobile phone for company use
• Opportunity to join a recognised workplace union

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