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Tanzania Extension Supervisor (Fixed-Term)

Mbeya/Iringa , Tanzania

About One Acre Fund

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, we provide high-quality farm supplies, tree seedlings, accessible credit, modern agronomic training, and a wide range of other agricultural services. On average, this model enables any farmer to increase their income and assets on supported land by more than 35 percent, while permanently improving their resilience. This is all made possible by our team of 9,000+ full-time staff, drawn from diverse backgrounds and professions. To learn more, please see our Why Work Here blog post.

Our Tanzania program, founded in 2013, supports more than 100,000 farmers with quality farm supplies, as well as fruit trees. Our team in Tanzania is headquartered in Iringa and supported by three smaller offices, Mbeya and Njombe in the southern highlands, and Moshi in the north where the team is focused on expanding our services to new clients. One Acre Fund works in select areas in the Iringa and Mbeya regions, with a growing presence in the country’s north.

About the Role

The role will work closely with the impact and product innovation leadership and involves designing and managing agricultural extension and training content for farmers, One Acre Fund (OAF) stakeholders, partners, and staff. The Extension Supervisor is a dual-role position combining Innovation intern supervision with Regional Lead administrative duties. The primary focus is to oversee interns supporting data-related workstreams for Lead Farmers and Green Academy ensuring accurate entry, backchecks, reporting, and field-based assignments. Alongside this, the Supervisor manages core Regional Lead responsibilities, primarily through administrative coordination, planning, and support to Extension Officers, ensuring regional activities run smoothly and align with program standards.

Responsibilities

Team Supervision & Data Integrity

  • You will supervise a team of interns, managing their work plans, field assignments, and professional development to ensure high-quality delivery.
  • You will oversee data entry for Lead Farmers and the Green Academy, performing backchecks and basic data cleaning to ensure accuracy.
  • You will coordinate logistics for field activities, including demo plot visits and farmer follow-ups, ensuring all standards are met.

Agricultural Content & Impact Design

  • You will support the design and revision of our annual farmer training curriculum to maximize agricultural impact.
  • You will research and develop training tools for new products, including strategies for integrated pest and disease management.
  • You will facilitate training sessions for farmers, staff, and partners, attending field sessions to gather feedback for continuous material improvement.

Customer Engagement & Agronomic Support

  • You will serve as the technical expert for farmer agronomic concerns, providing solutions for crop challenges within a 48-hour window.
  • You will empower our Hotline and Duka (shop) staff by training them to provide simple, effective agronomic advice to clients.
  • You will conduct frequent field visits to identify emerging farmer challenges and translate these insights into organizational strategy.

Inter-Departmental Collaboration

  • You will act as an internal consultant, providing agricultural expertise to the Government Relations, Retail, and M&E teams.
  • You will represent One Acre Fund’s technical interests in high-level internal meetings and external engagements with government officials.

Career Growth and Development

We have a strong culture of constant learning and we invest in developing our people. You’ll have weekly check-ins with your manager, access to mentorship and training programs, and regular feedback on your performance. We hold career reviews every six months, and set aside time to discuss your aspirations and career goals. You’ll have the opportunity to shape a growing organization and build a rewarding long-term career.

Qualifications

Across all roles, these are the general qualifications we look for. For this role specifically, you will have:

  • Diploma or graduate of 4-year university in either General Agriculture or Agronomy or related degree. 
  • 1 year min of experience working closely with farmers is an added advantage Professional, practical experience with (and passion for) agricultural extension work.
  • Willingness to be based in Mbeya or  Iringa and to travel throughout the One Acre Fund service territory: Mbeya, Songwe, and Njombe.

Preferred Start Date

As soon as possible

Job Location

Mbeya / Iringa, Tanzania

Benefits

Health insurance, paid time off 

Contract Duration

1 Year

Eligibility

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

Application Deadline

14 May 2026. Please note that we hire on a rolling basis which means that applications are reviewed and processed on a continuous basis until a hire is made.

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 arrive from an @oneacrefund.org address. Please report any suspicious communication here (globalhotline@oneacrefund.org), but do not send applications or application materials to this email address.

Diversity, Equity, Inclusion (DEI), and anti-racism are deeply connected to our organization’s mission and purpose. One Acre Fund aspires to build a culture where all staff feel consistently valued, represented, and connected – so that our team can thrive as professionals, and achieve exceptional impact for the farmers we serve.

We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, marital status, disability, gender, gender identity or expression. We are proud to be an equal opportunity workplace.

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One Acre Fund maintains a strong policy of equal opportunity employment. The following information is used to determine if our equal employment opportunity efforts are reaching all segments of the population. Individuals seeking employment at One Acre Fund are considered without regard to race, color, religion, sex, sexual orientation or identity, national origin, age, disability, veteran status, or any other protected status. Answering this question is voluntary. There will be no impact on your application whether or not you choose not to answer this question. 

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