Principal Mechanical Engineer

Location: Gloucestershire

Salary: £70,000 – £90,000

Contract: Permanent

Role Overview – Principal Mechanical Engineer

Are you a highly experienced Mechanical Engineer with deep expertise in downhole drilling systems and a passion for improving, refining, and sustaining complex mechanical products? This is an excellent opportunity to join an innovative engineering organisation developing advanced drilling technologies for extreme environments.

Based in Gloucestershire, you will take a senior technical lead role focused on the sustaining engineering of next‑generation drilling tools. You’ll be responsible for ensuring that existing products continue to meet performance, reliability, and safety expectations throughout their lifecycle. This includes design improvements, problem resolution, qualification support, tooling and fixture updates, and engineering change management.

Operating in a fast‑paced, high‑growth environment, you’ll work closely with engineering, manufacturing, quality, supply chain, and external partners to maintain and enhance the performance of cutting‑edge drilling systems that support the advancement of deep geothermal energy.

Key Responsibilities – Principal Mechanical Engineer

Lead sustaining engineering activities for advanced downhole drilling systems, focusing on reliability, durability, and long...