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.