Binnies
Principal Mechanical Engineer (@one Alliance)

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The Vacancy
Vacancy: Principal Mechanical Engineer
Location: Peterborough
What will you be doing as our new Principal Mechanical Engineer?
As our Principal Mechanical Engineer, you'll lead the Senior Mechanical Engineers in designing and delivering cutting-edge value-driven mechanical engineering solutions that adhere to water quality standards while reduce carbon, enhance natural capital, and embrace the challenges of climate change.
Key Responsibilities
Strategic Leadership:
- Foster innovative ways of working to achieve sustainable outcomes rather than outputs.
- Represent the @one Alliance as the mechanical engineering authority, providing expert guidance on quality and compliance issues.
Discipline Management:
- Develop procedures, standards, and guidance to achieve a "right-first time" philosophy.
- Support the mechanical design team in delivering complex projects with suitable resources and methods.
- Provide direction and guidance to the team in appropriate design methods and assets.
- Collaborate with suppliers to ensure competency and performance and manage supplier frameworks.
- As part of the asset standards governance process identify, support, implement and approve standard products for delivery efficiency and consistency in projects.
Project Delivery:
- Support the identification of value-driven solutions at Stage 1 of projects.
- Conduct audits (internal and external) to ensure compliance with quality standards and specifications.
- Lead the resolution of non-compliance issues, competency gaps, and procedural improvements.
- Offer expert direction for complex design challenges and stakeholder engagement.
Health & Safety:
- Drive excellence in compliance with CDM regulations, ensuring safe and compliant designs.
- Conduct audits on mechanical safety standards (e.g., HAZOP, DSEAR) and lead improvements.
- Proficiency and application of Regulation 31 in relation to mechanical assets in water projects.
People & Team Development:
- Provide technical leadership, mentoring, and career guidance to the mechanical engineering team.
- Champion professional development and qualifications while fostering an inclusive, respectful, and diverse environment.
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
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Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.
Graduate Consultant — 2026 Scheme
Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
See breakdownIt searches the market for you
Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
Transformation & Innovation:
- Inspire a culture of experimentation, safe failure, and continuous improvement.
- Lead the introduction of new technologies and techniques to advance performance and sustainability.
About You:
To thrive in this role, you’ll need a strong background in mechanical engineering, preferably within water treatment or similar industries. Proven leadership experience, with the ability to inspire teams and drive innovation. A deep understanding of sustainability principles, including reducing carbon and protecting natural capital. Excellent communication, collaboration, and stakeholder engagement skills, and a passion for mentoring, professional development, and fostering a positive workplace culture.
About Us
We develop intelligent solutions using our award-winning integrated planning and design approach to deliver functional infrastructure and lasting environmental and social legacies. This is backed by a culture that has stayed true since our foundation over 100 years ago. We create new possibilities for humanity through our innovative approach to delivery.
Together with our clients, we are always striving to find a smarter way to deliver projects. From providing low carbon, sustainable and resilient water solutions, flood alleviation and environment services, to connecting people with insights and data. Our business exists to improve the quality of life for our local communities today and for generations to come.
Binnies is part of the RSK Group, a leading integrated environmental, engineering, and technical services business providing dynamic, multidisciplinary services to a wide range of sectors. RSK was founded in 1989 and has grown considerably since then.
At RSK, we operate as a group of businesses that work together seamlessly, aiming for growth through diversification. Our strategy helps us build a strong and resilient business, capable of weathering external challenges, while also providing greater value to our clients and more opportunities for our employees.


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Since the beginning, our philosophy has remained the same: employ, develop and reward talented individuals. People are crucial to our company, and we recognise that our success hinges on our colleagues' growth. We're committed to preserving RSK's people-first culture, promoting innovation, and fostering a supportive and caring environment for collaboration. At RSK, we want you to be part of our successes and help you reach your career aspirations. We take pride in offering employees fulfilling and challenging careers by promoting ongoing growth and empowering individuals to excel.
We are committed to fostering an inclusive workplace that welcomes individuals from all backgrounds, experiences, and perspectives. We firmly believe that embracing and celebrating the diversity in our workforce makes us a stronger and more innovative company.
If you're passionate about making a difference, join us as we work together to build a brighter, more equitable, and sustainable future for all. Do you have what it takes?
Benefits
- Private Health Insurance
- Income Protection
- High Street Vouchers
- Life Assurance
- Annual Leave Purchase
- Cycle to Work Scheme
- Paid Volunteering
- Mental Health Support
- Electric Vehicle Salary Sacrifice Scheme
Sectors
Environment
We create sustainable critical infrastructure across the whole asset life cycle to meet the net zero challenge. We integrate sustainability into everything we do, utilising digital innovation to create value. We de-risk projects through collaborative engagement and holistic thinking which builds inclusive wealth for our clients, stakeholders and communities.
Water
We are engaged in every aspect of the water industry, helping clients efficiently and effectively collect, store, move and treat water and wastewater; plan and manage watersheds; harness the energy embedded in the treatment and movement of water and enhance sustainability. We incorporate leading-edge digital transformation to create more resilient and reliable solutions using data analytics to provide powerful insights.
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