Certified Arborist – Grounds Maintenance for US Navy

About the role

Amentum is looking for an ISA‑Certified Arborist to join a specialised US Navy programme on Diego Garcia. You will ensure the island’s grounds remain safe, healthy and visually appealing while complying with DoD standards.

Key responsibilities

• Maintain improved grounds, including prestige areas, POL zones, tanks, fence lines, pipelines and berms to meet Service Level Standards (J‑1503050‑06).
• Trim and prune trees, shrubs and other vegetation to promote health and aesthetics.
• Assess tree and plant health, diagnose pests, diseases and environmental stressors.
• Apply appropriate treatments such as fertilisation, pest control, pruning and irrigation.
• Operate and maintain chainsaws, pruners, stump grinders and related landscaping equipment.
• Ensure safety compliance, proper waste disposal and adherence to DoD landscaping regulations.
• Coordinate schedules with grounds‑maintenance teams and local facility managers.
• Document inspections and maintenance activities per contract requirements.
• Provide emergency response for storm damage, fallen trees or other vegetation‑related incidents.

Required profile

• Current ISA Certified Arborist® credential or equivalent.
• 2‑4 years of arboriculture or grounds‑maintenance experience.
• High school diploma or equivalent.
• Proficiency with chainsaws, pruning tools, stump grinders and related machinery.
• Strong knowledge of vegetation species, pruning techniques and disease diagnostics.
• Familiarity with DoD landscaping and safety standards.

Required skills

• Chainsaw operation
• Pruning and shearing techniques
• Stump grinder use
• Vegetation health assessment
• Pest and disease identification
• Fertilisation and irrigation practices

What we offer

• Opportunity to work on a unique US Navy project in a remote island environment.
• Access to Amentum’s global resources and professional development programs.