Senior Mechanical Design Engineer – Large Structures

Permanent or Contract available

Sheffield

Flexible start and finish times, hybrid working options

Permanent benefits

25 days holiday + bank holidays (rising with service), with holiday buy scheme

Enhanced pension and life insurance

A fast-growing, PE-backed engineering firm is expanding its mechanical design team to support major landmark projects in defence, infrastructure, and high-integrity moving systems. This is a standout opportunity for a Senior Mechanical Engineer to join a team-first culture and strong focus on continuous development.

This is for someone with proven experience designing large fabricated structures and using tools like Mathcad to back up their work with robust calculations. You’ll work on highly engineered moving systems, including large steel structures, box girders, and precision mechanical handling equipment alongside a collaborative, multi-disciplinary team.

Projects span the full lifecycle from concept design and substantiation through to commissioning and client delivery.

The Role

* Lead mechanical design across complex moving structures, often bespoke and high-value

* Produce and review engineering calculations in Mathcad to support design validation and compliance

* Design large fabricated components such as box girders, linkages, and steel assemblies

* Approve 3D models, 2D drawings, and engineering doc...