Senior Mechanical Design Engineer

Senior Mechanical Design Engineer

Location: Grangemouth (Hybrid / Flexible) • Sector: Water / Infrastructure • Employer: Leading Tier 1 Contractor

An opportunity has arisen for a Senior Mechanical Design Engineer to join a growing engineering team within a leading Tier 1 contractor delivering major water and infrastructure projects across the UK.

This is a key technical position, responsible for delivering high‑quality mechanical design solutions across the full project lifecycle, from concept through to detailed design and construction support. You will play a pivotal role in ensuring designs meet regulatory, safety, and commercial requirements while contributing to multi‑disciplinary project delivery.

Key Responsibilities

• Produce and review mechanical design deliverables in line with project requirements and industry standards.
• Act as a technical checker, ensuring quality assurance and compliance of design outputs.
• Develop efficient, cost‑effective solutions that balance capital and operational expenditure.
• Ensure designs are safe, buildable, and aligned with operational requirements.
• Integrate mechanical designs with other disciplines (civil, electrical, process, etc.).
• Collaborate closely with Design Managers, Principal Engineers, and project teams.
• Provide technical support during design reviews, risk assessments, client meetings, and contribute to maintaining robust design governance and quality procedures.
• Engage in procurement and supply‑chain activities and construction and site‑delivery phases.
• Provide technical guidance and mentoring to junior and graduate engineers.
• Support team development toward professional accreditation (e.g., IMechE, ICE).
• Contribute to continuous improvement, innovation, and knowledge sharing across the discipline.
• Support design assurance processes and regulatory compliance across projects.
• Ensure designs comply with H&S legislation, CDM regulations; industry standards; best practices; and internal quality management systems.

About You

• Degree in Mechanical Engineering (or equivalent).
• Chartered Engineer status (or working towards) is desirable.
• Significant experience in mechanical design within infrastructure projects.
• Background in water and/or wastewater sectors preferred.
• Experience working in a contracting or consultancy environment.
• Strong track record of delivering designs within multi‑disciplinary teams.
• Strong understanding of mechanical systems relevant to infrastructure (e.g., pumping systems, treatment plant equipment, pipework).
• Knowledge of relevant standards, regulations, and H&S requirements.
• Experience reviewing subcontractor or supplier design documentation.
• Commercial awareness and ability to consider whole‑life cost impacts.

If you’re a motivated mechanical design engineer looking to take the next step in your career and contribute to complex infrastructure projects, we’d love to hear from you.