Location
Thames21’s main office at the Guildhall, City of London; hybrid working available.

Hours
Part Time - 21 hours per week (0.6 FTE)

Salary
£24,000 to £27,000 per annum (pro rata from £40,000 - £45,000 full time equivalent)

About the Role
Thames21 is an environmental charity dedicated to restoring and caring for rivers, water, and nature across London and the Thames Basin. We are seeking a results-driven and ambitious Individual Giving Manager to establish and grow our individual giving programme from the ground up. You will lead inspiring campaigns that boost engagement and drive unrestricted income, supporting Thames21’s mission and growth. Joining a successful and ambitious fundraising team, you will plan and deliver major campaigns such as Christmas/end-of-year giving and Earth Raise, develop digital marketing campaigns, and create compelling supporter journeys to maximise donor retention and upgrade rates. You will work closely with the CRM Manager to optimise Donorfy and ensure data integrity, while maintaining GDPR compliance and fundraising best practice. This permanent role offers the opportunity to make a significant impact by growing individual giving income from five- to six-figures over three years through innovative, multichannel fundraising and stewardship activities.

Experience
- Proven experience in the charity sector, ideally in a hands-on role within a small to medium organisation.
- Demonstrated success in 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.
- Experience delivering multichannel fundraising or digital marketing campaigns and managing major appeals (e.g. Big Give).
- Solid understanding of GDPR, Fundraising Regulator guidance, supporter consent, and Gift Aid.
- Competent with Microsoft Office and online marketing tools.

About You
- Excellent fundraising copywriting and editing skills.
- Confident in analysing and interpreting data to inform decisions.
- Highly organised with the ability to manage multiple projects and competing deadlines.
- Proactive problem-solver who can work independently and collaboratively.
- Comfortable working in a fast-paced, mission-driven environment.
- Able to work confidently across departments.
- Empathetic with a strong understanding of supporter motivations and behaviour.
- Committed to Thames21’s values and goals.

Qualifications
Not explicitly required, but relevant experience and skills as outlined above are essential.

Desirable
- Experience negotiating and managing external suppliers (e.g. designers).
- Experience targeting diverse audiences and stakeholders.
- Openness to using AI to maximise fundraising impact.