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Mechanical Project Engineer

Job details
Posting date: 28 January 2026
Hours: Full time
Closing date: 11 February 2026
Location: SL7 3SB
Company: Kier Group
Job type: Permanent
Job reference: 9844

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Summary

We're looking for a Mechanical Project Engineer to join our Thames Water framework, working on sites in the Northern Thames Valley.

Location: Northern Thames Valley, Buckinghamshire/Oxfordshire/Hertfordshire - remote working available, with occasional travel to the office required.Hours: 45 hours per week - some flexibility on hours available if desired, just let us know when you speak to us.

Are you ready to make a meaningful impact on essential water infrastructure? As a Mechanical Project Engineer within our Wastewater Asset Assurance Programme (WAAP), you'll collaborate with our Thames Water team to deliver quality-focused MEICA projects that maintain critical systems serving millions of people. Initial sites will be Stewkley and Little Marlow in Buckinghamshire.

What will you be responsible for?As a Mechanical Project Engineer, you'll be working within the WAAP team, supporting them in delivering mechanical installations that meet Thames Water's exacting standards. Your day to day will include:

• Leading on mechanical package selection and installation, ensuring alignment with Thames Water Asset standards and WIMES specifications • Collaborating with the electrical project engineer to coordinate integrated solutions • Supervising supply chain partners to maintain quality standards and timely delivery • Managing the commissioning process for mechanical plant installations • Promoting a 'Right First Time' culture while capturing lessons learned and best practices

What are we looking for?This role of Mechanical Project Engineer is great for you if:

• You hold BEng/ONC/HNC/BTEC qualifications in mechanical engineering • You have some experience in the water industry, particularly with wastewater systems • You're confident reviewing RAMS and understand risks associated with process plant installations • You possess strong problem-solving skills and enjoy collaborative working environments • You hold a full UK driving licence and relevant safety certifications (CSCS, SSSTS)

We're all about finding potential here at Kier, and transferrable skills are always welcome! So, even if you don't tick every box, please apply and we can have a chat.

Rewards and benefitsWe're proud to be able to offer our brilliant people a wide variety of benefits that you can tailor to your needs. You can see more information of benefits here.

Diversity and inclusionMaking Kier a diverse and inclusive place to work is a huge priority for us. We're proud of the steps we've taken so far, but we know we must always do more. Our employees are key in shaping Kier's diversity and inclusion initiatives and our people have made a huge impact on how we work, by using their experiences to shape our policies. You can see our D&I action plan here. As a Disability Confident employer, we will ensure that a fair and proportionate number of disabled applicants that meet the minimum criteria for this role will be offered an interview.

We look forward to seeing your application to #joinkier #LI-CH1

Proud member of the Disability Confident employer scheme

Disability Confident
A Disability Confident employer will generally offer an interview to any applicant that declares they have a disability and meets the minimum criteria for the job as defined by the employer. It is important to note that in certain recruitment situations such as high-volume, seasonal and high-peak times, the employer may wish to limit the overall numbers of interviews offered to both disabled people and non-disabled people. For more details please go to Disability Confident.

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