Fitter Machinist

Omega Resource Group; Dartington; On-site; GBP 35,000 - 48,000; Full time

Job summary

Omega Resource Group is seeking a Mechanical Fitter / Machinist for a permanent role in the aerospace/defence sector. You will work across mechanical fitting, CNC and manual machining, building high‑integrity components to engineering drawings and AS9100 standards.

The role covers testing, prototype support, and tight tolerance work (±0.01 mm typical). You’ll interpret drawings, use micrometers and height gauges, and contribute to continuous improvement in a small, fast‑paced subcontract

Qualifications

• Time-served apprenticeship or equivalent in Mechanical 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.

Responsibilities

• Build, align, assemble, and test mechanical systems, sub-assemblies, and prototypes to drawings and specifications.
• 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.
• Diagnose assembly issues, machining inaccuracies, tolerance conflicts, and prototype build challenges; propose and implement practical engineering solutions.
• Conduct first‑off inspections, dimensional checks, and verification against aerospace/defence standards (AS9100 aligned).
• Work with design and engineering teams to develop prototypes, experimental assemblies, fixtures, and tooling.

Skills

Mechanical fitting

CNC machining

Manual machining

GD&T interpretation

Aerospace/defence experience

Education

Time-served apprenticeship in Mechanical Engineering

Tools

Micrometers

Verniers

Height gauges

Bore gauges

CMM

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.