Founded in 2006, One Acre Fund equips 5.5 million smallholder farmers to make their farms more productive. Across nine countries that together are home to two-thirds of Africa’s farmers, One Acre Fund provides high-quality farm supplies, tree seedlings, accessible credit, modern agronomic training, and a wide range of other agricultural services.

On average, this model enables farmers to increase their income and assets on supported land by more than 35 percent, while permanently improving their resilience. This impact is made possible by a team of more than 9,000 full-time staff drawn from diverse backgrounds and professions. To learn more, please see the organization’s “Why Work Here” blog post.

One Acre Fund’s Tanzania program was founded in 2013 and supports more than 100,000 farmers with quality farm supplies and fruit trees. The Tanzania team is headquartered in Iringa and supported by three smaller offices in Mbeya and Njombe in the southern highlands, and Moshi in the north, where the team is focused on expanding services to new clients.

One Acre Fund works in selected areas in the Iringa and Mbeya regions, with a growing presence in northern Tanzania.

About the role

One Acre Fund is seeking a high-energy, strategic Tree Supervisor to drive Agroforestry and farmer impact initiatives.

The ideal candidate should have at least 2–3 years of experience leading teams and ensuring that thousands of farmers successfully adopt and plant high-quality seedlings.

Responsibilities

Seedling marketing, distribution, and training

• Plan and execute marketing, enrollment, and distribution strategies across 25–30 sites to meet annual seedling adoption and planting goals.
• Partner with the Agroforestry Specialist to develop distribution schedules and contingency plans for both vendor-supplied and out-grower seedlings.
• Train temporary staff, Carbon Credits Officers, and farmers on best practices for seedling care, optimal planting windows, and safe handling during transport.
• Lead field mobilization efforts to ensure farmers are fully informed, prepared, and equipped to successfully collect their seedlings.

Data collection, auditing, and reporting

• Own team performance metrics and quality control measures, while immediately escalating operational risks to the Agroforestry Specialist.
• Conduct unannounced field audits to validate data, identify performance variances, and implement swift corrective action plans.
• Lead the execution of tree impact surveys, ensuring field teams meet strict data collection and backcheck targets.
• Review training materials and translate field insights, including successful farmer practices and recurring challenges, into actionable district training plans.

Team leadership and district culture

• Motivate and manage temporary staff and external stakeholders.
• Foster a workplace culture rooted in psychological safety, strong customer service, and Diversity, Equity, and Inclusion (DEI) values.
• Lead team meetings, build work plans, manage the performance tracker, and coordinate staff coverage to ensure seamless program continuity.
• Manage temporary staff needs and coordinate with the Agroforestry Specialist on hiring or data changes.

Financial sustainability

• Maintain strict mindfulness of budgets.
• Actively champion cost-control measures across all areas of field management.

Career growth and development

One Acre Fund has a strong culture of constant learning and invests in developing its people.

The successful candidate will benefit from:

• Weekly check-ins with their manager.
• Access to mentorship and training programs.
• Regular performance feedback.
• Career reviews every six months.
• Dedicated time to discuss career aspirations and goals.
• The opportunity to shape a growing organization and build a rewarding long-term career.

Qualifications

Across all roles, One Acre Fund looks for strong general qualifications. For this role specifically, candidates should meet the following requirements:

Required education and experience

• Advanced Diploma or equivalent degree in a relevant field.
• Proven track record in a management or supervisory role.
• Experience leading field teams or external stakeholders.
• Practical experience in Agriculture, Agroforestry or Tree Farming, or Community Development initiatives.

Technical and analytical skills

• High proficiency in modern workplace tools, including computers, email clients, and mobile tablet devices for field operations.
• Ability to handle basic data analysis.
• Ability to interpret field metrics and translate survey results into actionable insights.

Language and communication

• Business-proficient written and spoken English.
• Ability to clearly train staff.
• Ability to write concise operational reports.

Preferred start date

As soon as possible.

Benefits

• Health insurance.
• Paid time off.

Contract duration

1 year.

Eligibility

This role is only open to citizens or permanent residents of Tanzania.

Important recruitment notice

One Acre Fund never asks candidates to pay any money or pay for tests at any stage of the interview process.

Official One Acre Fund emails will always come from an @oneacrefund.org address. Candidates should report any suspicious communication to globalhotline@oneacrefund.org. However, applicants should not send applications or application materials to this email address.

• Plan and execute marketing, enrollment, and distribution strategies across 25–30 sites to meet annual seedling adoption and planting goals.
• Partner with the Agroforestry Specialist to develop distribution schedules and contingency plans for both vendor-supplied and out-grower seedlings.
• Train temporary staff, Carbon Credits Officers, and farmers on best practices for seedling care, optimal planting windows, and safe handling during transport.
• Lead field mobilization efforts to ensure farmers are fully informed, prepared, and equipped to successfully collect their seedlings.
• Own team performance metrics and quality control measures, while immediately escalating operational risks to the Agroforestry Specialist.
• Conduct unannounced field audits to validate data, identify performance variances, and implement swift corrective action plans.
• Lead the execution of tree impact surveys, ensuring field teams meet strict data collection and backcheck targets.
• Review training materials and translate field insights, including successful farmer practices and recurring challenges, into actionable district training plans.
• Motivate and manage temporary staff and external stakeholders.
• Foster a workplace culture rooted in psychological safety, strong customer service, and Diversity, Equity, and Inclusion (DEI) values.
• Lead team meetings, build work plans, manage the performance tracker, and coordinate staff coverage to ensure seamless program continuity.
• Manage temporary staff needs and coordinate with the Agroforestry Specialist on hiring or data changes.
• Maintain strict mindfulness of budgets.
• Actively champion cost-control measures across all areas of field management.

• High proficiency in modern workplace tools, including computers, email clients, and mobile tablet devices for field operations.
• Ability to handle basic data analysis.
• Ability to interpret field metrics and translate survey results into actionable insights.
• Business-proficient written and spoken English.
• Ability to clearly train staff.
• Ability to write concise operational reports.

• Advanced Diploma or equivalent degree in a relevant field.
• Proven track record in a management or supervisory role.
• Experience leading field teams or external stakeholders.
• Practical experience in Agriculture, Agroforestry or Tree Farming, or Community Development initiatives.