Fitter Machinist

Omega Resource Group; Cheltenham; On-site; GBP 42,000 - 52,000; Full time

Job summary

Omega Resource Group is recruiting a Mechanical Fitter / Machinist in Cheltenham for permanent roles. The position involves dual discipline work in mechanical fitting, CNC machining, and manual machining to deliver high‑integrity components for aerospace/defence projects.

The role requires interpreting drawings, GD&T, tight tolerances, and experience with inspection tools. Opportunities include prototype support, problem solving, and working within a small, fast‑paced subcontract environment.

Qualifications

• Time-served apprenticeship or equivalent in Mechanical Engineering, Manufacturing, or Precision Engineering.
• 3–5+ years’ experience in machining, fitting, or hybrid roles.
• Aerospace/defence sector experience highly desirable.
• Training in CNC programming, metrology, or advanced machining advantageous.

Responsibilities

• Mechanical fitting & assembly — Build, align, assemble, and test mechanical systems, sub‑assemblies, and prototypes to drawings and specs.
• CNC machining operations — Program (basic), set, and operate CNC mills/turns to produce tight‑tolerance components.
• Manual machining — Manufacture one‑off parts, tooling, fixtures, and rework items using manual lathes, mills, grinders, and hand tools.
• Engineering problem‑solving — Diagnose assembly issues, machining inaccuracies, tolerance conflicts, and prototype build challenges; propose solutions.
• Quality assurance & inspection — Conduct first‑off inspections, dimensional checks, and verification against standards (AS9100 aligned).
• R&D and prototype support — Work with design and engineering teams to develop prototypes, experimental assemblies, fixtures, and tooling.

Skills

Mechanical fitting

Precision engineering

Aerospace experience

GD&T

Inspection tools

Education

Time-served apprenticeship

Tools

CNC machining

Manual machining

Inspection instruments

CMM familiarity

Job description

Mechanical Fitter / Machinist

Permanent

Salary competitive

Working hours: Monday to Thursday 7:45 am to 04:30 pm and 7:45 am to 1:00 on Fridays

Role Purpose

The Mechanical Fitter / CNC Machinist provides dual‑discipline capability across mechanical assembly/fitting, CNC machining, and manual machining, supporting both production and prototype/R&D activities. The role ensures high‑integrity components and assemblies are manufactured, assembled, tested, and delivered to aerospace/defence standards.

Core Responsibilities

• Mechanical fitting & assembly — Build, align, assemble, and test mechanical systems, sub‑assemblies, and prototypes to engineering drawings and specifications.
• CNC machining operations — Program (basic), set, and operate CNC mills/turns to produce tight‑tolerance components for aerospace/defence applications.
• Manual machining — Manufacture one‑off parts, tooling, fixtures, and rework items using manual lathes, mills, grinders, and hand tools.
• Engineering problem‑solving — Diagnose assembly issues, machining inaccuracies, tolerance conflicts, and prototype build challenges; propose and implement practical engineering solutions.
• Quality assurance & inspection — Conduct first‑off inspections, dimensional checks, and verification against aerospace/defence standards (AS9100 aligned).
• R&D and prototype support — Work with design and engineering teams to develop prototypes, experimental assemblies, fixtures, and tooling.

Required Skills & Technical Competencies

• Mechanical fitting experience in precision engineering, aerospace, defence, or similar high‑integrity sectors.
• CNC machining competence — Setting & operating
• Strong manual machining capability for bespoke and prototype work.
• Ability to interpret engineering drawings, GD&T, tolerance stacks, and aerospace specifications.
• Experience working to tight tolerances (±0.01 mm typical).
• Proficiency with inspection tools: micrometers, verniers, height gauges, bore gauges; CMM familiarity beneficial.

Ideal Candidate Profile

• A versatile engineer comfortable switching between hands‑on fitting, CNC machining, and manual machining depending on workload.
• Analytical mindset with a natural ability to troubleshoot and resolve engineering challenges.
• Enjoys prototype work, iterative development, and supporting R&D innovation.
• Works effectively in a small, fast‑paced subcontract environment with varied daily tasks.
• Takes pride in producing high‑accuracy, safety‑critical components for aerospace and defence.
• Strong communicator who collaborates well with engineers, machinists, and quality teams.

Qualifications & Experience

• Time‑served apprenticeship or equivalent in Mechanical Engineering, Manufacturing, or Precision Engineering.
• 3–5+ years’ experience in machining, fitting, or hybrid roles.
• Aerospace/defence sector experience highly desirable.
• Additional training in CNC programming, metrology, or advanced machining advantageous.

Compliance & Safety Requirements

• Adherence to AS9100, ISO9001, and internal quality procedures.
• Commitment to safe working practices, PPE use, and risk‑based decision‑making.
• Ability to complete required documentation for traceability and compliance.

Outputs & Deliverables

• High‑integrity machined components meeting drawing and tolerance requirements.
• Fully assembled and tested mechanical systems/prototypes.
• Accurate inspection records, build documentation, and non‑conformance reports.
• Continuous improvement suggestions for machining, assembly, and workflow.