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.

About the Role

This role is responsible for the coordination and oversight of fruit seedling nursery operations across decentralised production sites within the area of operation. Key responsibilities include propagation management, nursery monitoring, vendor oversight to ensure compliance with quality standards, and coordination of timely distribution of fruit seedlings. The role ensures that all seedlings produced or procured meet required quality standards and are delivered efficiently to intended beneficiaries.

Responsibilities

Technical Leadership (Budding & Grafting)

• Serve as the subject matter expert in fruit seedling propagation, particularly budding and grafting techniques.
• Develop and standardize propagation protocols for different fruit tree species.
• Ensure best practices are applied across all nurseries and supplier operations.

Program Planning & Execution

• Lead seasonal planning of fruit seedling production (April–December cycle).
• Forecast demand and align production plans with distribution targets.
• Coordinate procurement of inputs (rootstock, scions, polythene tubes, soil media, etc.).
• Ensure timely nursery setup and readiness across location.

Nursery Capacity Building & Training

• Train nursery managers and staff from foundational to advanced levels in:
• Budding and grafting techniques
• Seedling care and management
• Pest and disease control
• Nursery hygiene and handling practices
• Identify training needs and support capacity development initiatives.
• Conduct regular on-site coaching and performance assessments.
• Develop simple training materials and SOPs for ongoing learning.

Monitoring, Evaluation & Reporting

• Develop and implement a monitoring tracker to effectively track and oversee the timely execution of key milestones, enabling prompt identification and response to any challenges that arise.
• Track key performance indicators (KPIs) such as:
• Survival rates
• Grafting success rates
• Production volumes vs targets
• Conduct regular field visits to monitor nursery and supplier performance.
• Prepare periodic reports on progress, risks, and corrective actions.

Team Management

• Directly manage and mentor the Fruit Seedlings Supervisor.
• Set clear targets, provide guidance, and monitor performance.
• Foster a culture of accountability, learning, and continuous improvement.

Distribution & Last-Mile Coordination

• Plan and oversee the distribution of seedlings to farmers.
• Coordinate with logistics teams to ensure timely and efficient delivery.
• Ensure proper handling and minimal damage during transportation.

Research & Learning

• Collaborate with external experts and OAF countries to gain insights into best practices in nursery management, and adapt and transfer these practices to decentralized nurseries for implementation.
• Develop key initiatives and trials that will enable the department to better execute the seedlings program.

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:

Education

• Bachelor’s degree in Horticulture, Agriculture, Forestry, or a related field (required).
• Specialized training in plant propagation or fruit tree management is an added advantage.

Experience

• Minimum 3–5 years of hands-on experience in:
• Fruit tree propagation (budding and grafting at scale)
• Nursery establishment and management
• Proven experience managing large-scale seedling production (tens of thousands annually).
• Experience working with external suppliers/vendors and conducting quality control.
• Experience in training or building the capacity of field teams or farmers is strongly preferred.
• Experience in program/project management, including planning and execution cycles.

Preferred Start Date

As soon as possible

Job Location

Zambia

Benefits

Health insurance, paid time off 

Contract Duration

1 Year

Eligibility

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

Application Deadline

21 July 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.

About the company: 

The mining industry has steadily become worse at finding new ore deposits, requiring >10X more capital to make discoveries compared to 30 years ago. The easy-to-find, near-surface deposits have largely been found, and the industry has chronically under-invested in new exploration technology, relying on the manual techniques of yesteryear – even as demand accelerates for copper, lithium, and other metals to build electric vehicles, renewable energy, and data centers.

KoBold builds AI models for mineral exploration and deploys those models—alongside our novel sensors—to guide decisions on KoBold-owned-and-operated exploration programs. In the six years since founding, KoBold has become by far both the largest independent mineral exploration company and the largest exploration technology developer. Our data scientists and software engineers, who come from leading technology companies, jointly lead exploration programs with our renowned exploration geologists.

KoBold has proven its first discovery with materially less capital than the industry average and found one of the best copper deposits ever discovered: the copper is far more concentrated than the global average of copper mines, and this asset alone is expected to generate meaningful revenue for decades. KoBold has a portfolio of more than 60 other projects, each of which has the potential for another high-quality discovery.

We are hiring a Field Hardware Engineer  to help accelerate our mission.

About the position

In this role, you will deploy, operate and maintain prototype hardware technology to improve our exploration programs in Zambia. These hardware technologies produce data that feed the algorithms, models, and analysis that the company uses for mineral exploration, first in Zambia and subsequently around the globe. You will work hands-on to further develop Mingomba’s instrumentation and drilling technology.  The data collected by your hardware will create insights that accelerate discovery of critical battery metals.

You will join an outstanding team of data scientists and engineers and will work closely with world-renowned geoscientists to incorporate our best understanding of the chemical and physical processes that create ore deposits.

Ultimately, your role is to help make valuable discoveries by building and deploying next generation hardware to solve scientific problems. 

Responsibilities

The Field Hardware Engineer will:

• Deploy and maintain measurement and instrumentation systems at KoBold’s Mingomba site and other sites around Zambia. 
• Work hands on to design, build, improve, and repair equipment and instrumentation such as imaging systems, lab measurement systems, and drill site systems in the field and in the core shed.  
• Coordinate with KoBold and contractor staff to ensure proper and ongoing operation of measurement and instrumentation systems including conducting operator training. 
• Be the in country lead for deployment of new technologies, coordinating logistics & labor, component receiving and inspection, assembly and validation. 
• Work closely with vendors to successfully deliver complex hardware systems on time and on budget.
• Source vendors and components in Zambia as well as sourcing and importing parts not available in Zambia. 
• Iterate mechanical designs in Solidworks
• Present to and collaborate with our external partners and stakeholders.

Qualifications

A great Field Hardware Engineer candidate will have:

• A successful track record of deploying, maintaining, and improving complex state-of-the-art equipment in production environments.
• Excellent communication skills for a highly interdisciplinary and international workplace 
• Ability to coordinate across multiple groups and work across timezones.  
• Experience selecting, managing and driving vendors to deliver components meeting quality requirements on time and on budget. 
• High attention to detail and organized.  Ability to foresee issues and get ahead of them. 

Technical skills, including extensive experience with:

• Mechanical engineering, CAD, prototyping, vendor and contractor management.
• Machining, sheet metal fabrication, welding, and 3D prototype printing
• Electrical systems, cable management, wiring, soldering, connectorization

Training and work experience:

• BSc in Mechanical Engineering / Control & Automation / Electronics & Instrumentation or equivalent
• At least 5 years of experience in mechanical design, fabrication, and prototyping
• At least 2 years experience deploying and maintaining equipment in the field

Work practices and motivation:

• Extremely motivated to take ownership and responsibility of large projects
• Enjoys constantly learning such that you are driving insights and innovations
• Ability to explain technical problems to and collaborate on solutions with domain experts who aren’t hardware experts
• Ability to independently prioritize multiple tasks effectively

It is also helpful but not required to have experience with:

• Camera systems
• Basic electronic engineering including power supplies, networking, data collection systems 
• Python programming
• Level 3 Technicians are encouraged to apply

Mingomba Mining Ltd is an equal opportunity workplace and an affirmative action employer. We are committed to equal employment opportunities for people of any race, color, ancestry, religion, sex, gender identity, sexual orientation, marital status, national origin, age, citizenship, marital status, disability, or veteran status.

Location: Chililabombwe, Zambia 

About the Company

The mining industry has steadily become worse at finding new ore deposits, requiring >10X more capital to make discoveries compared to 30 years ago. The easy-to-find, near-surface deposits have largely been found, and the industry has chronically under-invested in new exploration technology, relying on the manual techniques of yesteryear – even as demand accelerates for copper, lithium, and other metals to build electric vehicles, renewable energy, and data centers.

KoBold builds AI models for mineral exploration and deploys those models—alongside our novel sensors—to guide decisions on KoBold-owned-and-operated exploration programs. In the six years since founding, KoBold has become by far both the largest independent mineral exploration company and the largest exploration technology developer. Our data scientists and software engineers, who come from leading technology companies, jointly lead exploration programs with our renowned exploration geologists.

KoBold has proven its first discovery with materially less capital than the industry average and found one of the best copper deposits ever discovered: the copper is far more concentrated than the global average of copper mines, and this asset alone is expected to generate meaningful revenue for decades. KoBold has a portfolio of more than 60 other projects, each of which has the potential for another high-quality discovery.

KoBold is privately held; investors include institutional asset managers T. Rowe Rice and Canada Pension Plan Investments; technology venture capitalists Andreessen Horowitz, Breakthrough Energy Ventures, BOND Capital, and Standard Investments; and natural resources companies Equinor, BHP, and Mitsubishi.

About the Position

In the role of Field Operations Lead, you will plan and execute our field activities to meet our business objectives without causing harm to our people, our contractors and partners, or the communities and environments where we operate. You will report to our Field Operations Manager for North America, and also work closely with the COO, the leaders for our field programs, and other members of the operations team. Your primary responsibility will be to serve as the leader of field operations for 1-3 projects per year.

Responsibilities

 For 1-3 projects per year, the Field Operations Lead will be responsible for:

• Operations Control Center: Maintain daily contact with and monitor the status of KoBold personnel and contractors while in the field. Maintain close communication with the Project Geologist, Project Data Scientist, and the Senior Project Planner
• Reporting: Execute and maintain KoBold’s system for tracking health & safety incidents and provide periodic reporting
• Compliance: Understand applicable local laws and regulations and the practices of our joint venture partners and ensure that we follow them in all our operations
• Field Service Contractors: Identify, evaluate, contract with, and manage  contractors and vendors for a wide range of field operations, from camp construction to helicopter transport to emergency medical services
• Logistics: Arrange for the shipment of equipment and material to and from KoBold’s project sites
• Local Management: Deploy to remote project locations as required to implement and manage programs
• Process Improvement: Creating ways of working that allow us to continue to work more effectively and to be nimble so that we can support machine-learning-driven dynamic field programs, where we adapt our plan based on the data we collect at each stage
• Stakeholder Engagement: WIth leadership direction and support, help represent KoBold Metals with local stakeholders

Qualifications

You must have:

• At least 5 years of experience conducting field operations in mineral exploration & mining, oil & gas or a related industry
• Demonstrated commitment to and familiarity with developing and implementing high standards of health & safety in the workplace
• The ability to problem-solve in remote environments
• The ability to work in remote, physically demanding, and isolated locations for extended periods of time
• A high degree of independence and the ability to work effectively with limited supervision
• Familiarity with Project Management principles and managing projects remotely
• Enjoyment in working with people in a wide variety of disciplines and different parts of the world
• Interest in contributing broadly to the success of the company and eager to pitch in where needed
• Valid First Aid Certification (Level 3 or Wilderness First Aid is preferred)

It is helpful but not required to have:

• Run programs in different countries and/or remote environments
• Worked in a small company or as a member of a very small team with a broad mandate working in a fast paced project environment. 
• Project Management Professional (PMP) designation, CRSP designation, Red Seal designation (electrical, carpentry, plumbing), trained or experience operating heavy equipment 

KoBold Metals is an equal opportunity workplace and an affirmative action employer. We are committed to equal employment opportunity for people of any race, color, ancestry, religion, sex, gender identity, sexual orientation, marital status, national origin, age, citizenship, marital status, disability, or veteran status.

Location: This posting is limited to Zambian National only. Must reside in the Copperbelt Province.

About the Company

The mining industry has steadily become worse at finding new ore deposits, requiring >10X more capital to make discoveries compared to 30 years ago. The easy-to-find, near-surface deposits have largely been found, and the industry has chronically under-invested in new exploration technology, relying on the manual techniques of yesteryear – even as demand accelerates for copper, lithium, and other metals to build electric vehicles, renewable energy, and data centers.

KoBold builds AI models for mineral exploration and deploys those models—alongside our novel sensors—to guide decisions on KoBold-owned-and-operated exploration programs. In the six years since founding, KoBold has become by far both the largest independent mineral exploration company and the largest exploration technology developer. Our data scientists and software engineers, who come from leading technology companies, jointly lead exploration programs with our renowned exploration geologists.

KoBold has proven its first discovery with materially less capital than the industry average and found one of the best copper deposits ever discovered: the copper is far more concentrated than the global average of copper mines, and this asset alone is expected to generate meaningful revenue for decades. KoBold has a portfolio of more than 60 other projects, each of which has the potential for another high-quality discovery.

KoBold is privately held; investors include institutional asset managers T. Rowe Rice and Canada Pension Plan Investments; technology venture capitalists Andreessen Horowitz, Breakthrough Energy Ventures, BOND Capital, and Standard Investments; and natural resources companies Equinor, BHP, and Mitsubishi.

About the Position

In the role of Manager, Drilling & Field Operations  you will oversee the planning and execution of our field activities including drilling and remote exploration activities (reconnaissance, soil sampling, geophysical surveys, remote camp set up, road and pad construction) to meet our business objectives without causing harm to our people, our contractors and partners, or the communities and environments where we operate. You will report to the VP of Field Operations, and also work closely with, the Zambia Director of Exploration, geology teams, the leaders for our field programs, and other members of the operations team. Your primary responsibility will be to serve as the leader of drilling and field operations for 2-4 unique operating areas and multiple projects per year.

Responsibilities

For 2-4 unique areas, , the Field Operations Manager will be accountable for

• Operations Control Center: Maintain daily contact with and monitor the status of KoBold personnel and contractors while in the field. Ensure field ops and drilling leads maintain close communication with the Project Geologist, Project Data Scientist, and the Senior Project Planner
• Reporting: Working closely with the Zambia Manager of HSE, execute and maintain KoBold’s system for tracking health & safety incidents and provide periodic reporting
• Compliance: Understand applicable local laws and regulations and the practices of our joint venture partners and ensure that we follow them in all our operations
• Field Service Contractors: Identify, evaluate, contract with, and manage  contractors and vendors for a wide range of field operations, from camp construction to helicopter transport to emergency medical services
• Logistics: Arrange for the shipment of equipment and material to and from KoBold’s project sites
• Local Management: Deploy to remote project locations as required to implement and manage programs
• Process Improvement: Creating ways of working that allow us to continue to work more effectively and to be nimble so that we can support machine-learning-driven dynamic field programs, where we adapt our plan based on the data we collect at each stage
• Stakeholder Engagement: With leadership direction and support, help represent KoBold Metals with local stakeholders

Qualifications

You must have:

• At least 15 years of experience supervising drilling operations and field operations in mineral exploration & mining, oil & gas or a related industry with a minimum of 5 of those years in a leadership capacity
• Demonstrated commitment to and familiarity with developing and implementing high standards of health & safety in the workplace
• The ability to problem-solve in remote environments
• The ability to work in remote and isolated locations for extended periods of time
• Must speak, read, and write in English; French is an asset 
• A high degree of independence and the ability to work effectively with limited supervision
• Familiarity with Project Management principles and managing projects remotely
• Strong project management skills, strategic planning, and multi-disciplinary management  and oversight
• Enjoyment in working with people in a wide variety of disciplines and different parts of the world
• Strong communication skills and a passion for cross functional engagement and collaboration
• Interest in contributing broadly to the success of the company and eager to pitch in where needed
• Valid First Aid Certification (Level 3 or Wilderness First Aid is preferred)

It is helpful but not required to have:

• Run programs in different countries and/or remote environments
• Worked in a small company or as a member of a very small team with a broad mandate working in a fast paced project environment. 
• Project Management Professional (PMP) designation, CRSP designation, Red Seal designation (electrical, carpentry, plumbing), trained or experienced in operating heavy equipment.
• Mechanical or civil engineering degree

KoBold Metals is an equal opportunity workplace and an affirmative action employer. We are committed to equal employment opportunity for people of any race, color, ancestry, religion, sex, gender identity, sexual orientation, marital status, national origin, age, citizenship, marital status, disability, or veteran status.

This position is full-time, exempt.

The US base salary range for this full-time exempt position is $90,000-$130,000.

Location: Chililabombwe,  Zambia.  At this time, we are only accepting applications from Zambian nationals.