Senior Manager, Institutional Giving

350.org is looking for a Senior Manager for Institutional Giving with 7+ years of experience writing professional 6-8 figure grant proposals and 5+ years of experience leading an international grants team to generate $8M+ annually.

About 350.org

350.org is building a global grassroots movement to solve the climate crisis. Our online campaigns, grassroots organizing, and mass public actions are led from the bottom up by thousands of volunteer organizers in over 188 countries. 350.org works hard to organize in a new way—everywhere at once, using online tools to facilitate strategic offline action. We want to be a laboratory for the best ways to strengthen the climate movement and catalyze transformation around the world. The values that guide and drive our work are listed here.

350.org is an equal opportunity employer. 350.org strives to be an inclusive and collaborative group of people who bring a variety of approaches to the work we do. We’re committed to the principles of justice, and we try to build a safe workplace where everyone is treated fairly and enjoys working together. We value new perspectives, ideas of all sorts, and different ways of working. Diverse perspectives and experiences improve the way 350.org carries out our work – including what we decide to work on and how creatively/effectively we do that. We do our best to make staff positions accessible to all potential team members, regardless of race, national origin, ethnicity, age, disability, assigned gender, gender expression or identity, sexual orientation or identity, religion or creed, veteran status, marital or parental status, and genetic information. We also strive to include team members in communities most impacted by climate change or impacted by other kinds of environmental, social, and economic injustice.

About the Senior Manager, Institutional Giving

The Senior Manager, Institutional Giving will lead the management, strategy, and growth of 350.org’s portfolio of international, institutional donors. Overseeing the Manager, Institutional Giving as well as a small team of grant specialists, this individual will execute a development plan that meets or exceeds an $8M annual revenue goal for institutional donors. This individual has 7+ years of experience working with international funders and writing sophisticated and highly customized applications and concept notes for 6-8 figure grants. This individual also has significant experience leading a grants team and working in the environmental space. This individual will refine how we retain and grow our portfolio of institutional donors through the creation of a 3-year institutional fundraising plan.

Essential Duties

• Develop the strategy and lead the implementation of an annual institutional fundraising plan that delivers $8M+ in annual revenue.
• Manage the grants team, including employees and consultants, to secure multi-year, 6-8 figure funding from new and existing institutional donors.
• Work closely with the Executive Director and Board Fundraising Committee and utilize them in Donor engagements.
• Identify, cultivate, and solicit new institutional foundation relationships.
• Write and copy-edit professional and highly sophisticated grant proposals for both restricted and unrestricted funding, acting as the final sign-off on all proposals.
• Work closely with campaign leadership and country teams on developing cases for support and messaging with institutional funders.
• Work with finance and compliance teams to develop complex, multi-year, and multi-stakeholder grant budgets, and to provide oversight of the revenue stream.
• Collaborate across departments to write comprehensive, compelling, and detailed narrative and financial reports for funders.
• Act as the primary point of contact for key institutional donors, stewarding existing funders and cultivating new relationships.
• Oversee all communication and grant payments in Salesforce to track both real-time revenue updates and grant application/cultivation updates.
• Collaborate with the Managing Director of Resources & Engagement to ensure accurate financial forecasting and progress toward our $8M annual goal.
• In collaboration with the Managing Director, develop and oversee effective grant management processes across different functional teams.
• Research and manage a pipeline of new institutional funders, with a focus on non-US donors, to grow and diversify this revenue stream and build into the creation of a 3-year institutional fundraising plan for 350.org.
• Manage the deliverables promised on approved grant applications through Salesforce to ensure we remain compliant with institutional funders.
• Other duties as assigned.

Required Qualifications

• 5+ years of experience leading an international institutional grants team generating $8M+ annually, with direct funder engagement.
• 7+ years of experience writing professional grant proposals in the 6-8 figure range, as well as developing and managing multi-year proposal budgets.
• Significant experience working in the environmental and/or progressive space, preferably in the climate movement.
• Significant experience working with Salesforce or related CRM tools.
• Detail-oriented with strong project management skills in planning, prioritizing, and coordinating multiple projects simultaneously while meeting deadlines in a fast-paced environment.
• Excellent technical, analytical, and communications skills.
• High level of confidence and ability to work independently as well as within a team structure; proven ability to work well with diverse groups of people in different departments, functions, and time zones.
• Strong interpersonal skills, including verbal and written.

Desired (but not required) skills and experiences

• Strong history of commitment to climate justice and other environmental and social issues.
• Experience working in or collaborating with other nonprofit departments, including finance, digital fundraising, individual giving, and communications.

We are looking for someone comfortable working both independently and in teams, highly responsive, and able to lead initiatives as well as take direction from others.

Position Type: Full Time (36 hours per week)

Application Deadline: Although we hope to begin interviews during the week of January 26, 2026, this position remains open until filled or until the hiring manager determines that they can no longer accept applications.

Start Date: February 9, 2026, or ASAP

Compensation: We offer set, non-negotiable salaries for each level, and this role is at 350.org's internal salary grade level 3.3. Please review this list for the annual gross salary for this level.

Benefits: In addition to a fully remote, 36-hour work week and two all-staff breaks per year, we offer a suite of comprehensive benefits - details depend on the location of the role, but we generally aim for employees to receive high-quality health insurance and retirement planning benefits in their respective location.

Location: This is a remote position with preference given to applicants based in Europe.

If you have suggestions for us on how to do this better, we really value your input and strongly encourage you to write to us at jobs@350.org with the subject line ‘Hiring Feedback’.