Mechanical Design Engineer

Design Engineer (Mechanical & Civils)

Locations: Edmonton | Hoddesdon | Luton | Reading | Twickenham | Dartford

Position Type: Permanent, PAYE

Sector: Water, Utilities, and Construction

About the Role

We are seeking six experienced Design Engineers (Mechanical & Civils) with one position available at each of our strategic locations: Edmonton, Hoddesdon, Luton, Reading, Twickenham, and Dartford.

In this role, you will support vital projects across the water, utilities, and construction sectors, bridging the gap between concept and reality. You will be responsible for delivering practical, buildable design solutions from initial concept through to fabrication and on-site installation. If you have a strong grasp of fabrication detailing, steelwork design, and constructability ensuring designs are not only technically flawless but also feasible to manufacture, transport, and assemble we want to hear from you.

What’s on Offer

• Salary: £45,000–£55,000 (dependent on experience)

• Core Benefits: Company pension & Life insurance (up to 4x salary)

• Tools Provided: Company laptop & mobile phone

• Work-Life Balance: 33 days holiday (increasing with service) & supportive, flexible working environment

• Family & Well-being: Enhanced paternity/maternity leave & dedicated mental health & wellbeing support

• Growth: Clear, structured career progression pathways

Key Responsibilities

• CAD & Engineering Design: Produce 2D and 3D CAD designs (AutoCAD / AutoCAD LT or equivalent) for fabrication and construction.

• System Layouts: Develop and interpret Piping & Instrumentation Diagrams (P&IDs) to support plant layouts.

• Fabrication Detailing: Create highly detailed fabrication drawings, including assemblies, sections, and precise material specifications.

• Structural & Mechanical Components: Design essential infrastructure, including walkways, platforms, staircases, handrails, pipe supports, frames, and steel structures.

• Manufacturability & Logistics: Ensure designs account for practical constraints:

  • Optimizing cutting methods and material usage.

  • Evaluating welded vs. single-piece fabrication.

  • Specifying bolting, fixings, gaskets, and ancillary components.

  • Breaking designs into modular sections to accommodate transport and installation constraints.

• Material Selection: Choose appropriate materials (e.g., mild steel, galvanized steel, stainless steel, aluminum) tailored to the environmental conditions and application.

• Compliance & Documentation: Produce material take-offs (MTOs) and conduct design checks ensuring strict compliance with British Standards, Eurocodes, and client-specific asset standards.

• Collaboration: Work closely with project managers, site teams, and external clients to resolve real-world design challenges.

Requirements

• Experience: Proven track record in a design engineering role within the construction, water, or heavy industry sectors.

• Technical Skills: Strong proficiency in AutoCAD (2D/3D) or similar CAD suites, with a history of delivering fabrication-ready drawings (beyond just conceptual design).

• Engineering Knowledge: Solid understanding of steelwork (beams, columns, connections), fabrication processes, environmental material selection, and P&IDs.

• Standards: Familiarity with British Standards and Eurocodes, with the ability to apply them directly to engineering designs.

• Soft Skills: Strong problem-solving abilities, exceptional attention to detail, and the communication skills required to justify design decisions to diverse stakeholders.