Principal Mechanical Design Engineer

Equans UK & Ireland; Motherwell; On-site; GBP 45,000 - 65,000; Full time

Benefits offered by this job

25 days annual leave (+ public holidays)

Life Cover equivalent to 4 times annual salary

Company Stakeholder Pension Scheme

Private Medical Insurance (Family Cover)

Corporate social responsibility days

Learning opportunities and training programs

Employee Referral Rewards Scheme

Employee Assistance Program and mental wellbeing access

Job summary

A leading engineering solutions provider in Motherwell is seeking a Principal Mechanical Design Engineer to manage the design of mechanical services for data centers and similar critical projects. The role involves leading a team, providing technical guidance, and ensuring the delivery of high-quality design solutions on time. Candidates should have a relevant engineering degree and proven experience in mechanical design within mission-critical environments. The position offers a range of employee benefits including private medical insurance and a stakeholder pension scheme.

Qualifications

• Proven design experience for mechanical services in compliance with standards.
• Ability to manage multiple projects and prioritize effectively.
• Experience guiding and mentoring junior engineers.

Responsibilities

• Lead the design work for data centers and critical projects.
• Mentor junior engineers and oversee design team activities.
• Deliver projects on time and adhere to health/safety regulations.

Skills

Mechanical services design

Team leadership

Technical advice

Project management

Decision making

Education

BEng / Meng in mechanical/building services engineering

Job description

Equans Sci-Tech is recruiting a Principal Mechanical Design Engineer to work in a design team, delivering technical services at bid, design, installation and commissioning phases. The Principal Mechanical Design Engineer will lead high‑profile projects and mentor more junior engineers. This is a hands‑on role which will focus on the delivery and management of design and technical support services to data centers, clean rooms, pharmaceutical and other mission‑critical projects.

What you will deliver

• Manage and deliver design work throughout design and build projects in collaboration with the project teams and take full accountability for the design of mechanical services for data centres and other mission critical projects.
• Undertake design reviews and appraisals and provide technical advice/assistance to the projects teams.
• Guide and develop design team members and act as a mentor to assist the development of the team to achieve goals and objectives.
• Take responsibility for checking calculations and provide monthly design progress reports in each project reporting on technical risks and opportunities.
• Provide design/technical assessment support of tenders and deliver high quality design solutions that address contractual obligations and mitigate technical risk.
• Be the senior engineer on projects and lead regular design meetings with the project team.
• Provide engineering support to maintain technical audit trail through design, procurement, installation and commissioning stages.
• Successfully deliver projects with high quality design completed on time and within budget.
• Delivery of design in line with health and safety requirements.

What we can offer you

• 25 days annual leave (+ public holidays)
• Life Cover equivalent to 4 times annual salary
• Company Stakeholder Pension Scheme
• Private Medical Insurance (Family Cover)
• 2 corporate social responsibility days per year
• Broad range of learning opportunities, such as professional qualifications, collective / individual training, and personalised support programmes
• Attractive Employee Referral Rewards Scheme
• Access to our growing employee networks including AccessAbility (representing those with physical and mental disabilities), Encompass (representing the LGBTQ+ community), RISE (representing people from ethnic backgrounds), WOMEN TOGETHER (representing women in Equans), Working Parents, and Young Professionals
• 24/7 Employee Assistance Program and access to mental wellbeing app

Who are we looking for

• Recognised qualification in mechanical / building services engineering, i.e. BEng / Meng.
• Proven experience in mechanical services design in line with appropriate standards, guidance and client’s requirements.
• Experience of working on multiple projects concurrently and managing and communicating priorities with the team.
• Experience of developing team members and providing leadership to engineers and designers.
• An effective decision maker in consultation with project stakeholders and uses judgement to elevate the process.
• Proven experience of undertaking and leading the design of mechanical services, particularly for data centres and other mission‑critical projects.
• Experience in undertaking and managing specialist design and engineering services – sustainability & compliance (BREEAM, heat, fume and noise emissions, Part L), mathematical modelling (CFD, FEA, etc.) and services which support our designs.
• Experience delivering and managing design in line with RIBA plan of work, BSRIA BG6 schedule of services and ISO 19650 requirement up to and inclusive of RIBA Stage 5.
• Experience working with typical design and build contracts, JCT, NEC, MF1 and others.

Who are we

Equans Sci‑Tech is a specialist partner for mission‑critical environments—cleanrooms, laboratories and manufacturing plants—providing a fully integrated, single‑source approach to define, design and deliver advanced facilities with absolute certainty. Our lifecycle‑management mindset and value‑engineering model ensure cost certainty, faster speed to market and long‑term ROI. From strategic consultation and compliant, sustainable, technology‑agnostic designs to seamless delivery, handover and ongoing optimisation, we create future‑proof technical facilities and drive unmatched business outcomes. Backed by deep expertise, collaborative engagement and a culture of continuous knowledge development, we guarantee reliable, innovative solutions that support safety, sustainability and long‑term success.

Equal Opportunity and Diversity

As part of our commitment to better reflect the markets within which we operate, we encourage applications from women, ethnically diverse individuals and people with disabilities, along with all candidates who identify with protected characteristic groups under the Equality Act 2010. You’ll also have access to our growing employee networks including AccessAbility (representing those with physical and mental disabilities), Encompass (representing the LGBTQ+ community), RISE (representing people from ethnic backgrounds), WOMEN TOGETHER (representing women in Equans), Working Parents, and Young Professionals.

For this role, you must have evidence of the right to work in the UK. Unfortunately, we are not able to offer a re‑location package with this job role. Certain roles may require applicants to undergo a Disclosure check, as noted in the role requirements.