Senior Mechanical Design Engineer

Veolia; United Kingdom; Hybrid; GBP 50,000 - 70,000; Full time

Job summary

A leading environmental services company is seeking a Senior Mechanical Design Engineer who will lead the design for energy systems and play a key role in promoting ecological transformation. This role requires expertise in energy systems design and excellent organizational skills. The position offers a competitive salary, annual bonus, and a range of benefits including a pension scheme and an opportunity to work in a collaborative and inclusive environment.

Benefits

Discounts on groceries and retailers

Access to health resources

Paid volunteer leave

Ongoing training and development

Qualifications

• Educated to degree level within Mechanical Engineering.
• Experience designing energy systems and working in the energy industry.
• Familiarity with large–scale thermal generating plants.

Responsibilities

• Lead multidisciplinary engineering teams.
• Act as Technical Lead for Business Development opportunities.
• Prepare tender packages for outline designs.

Skills

Designing energy systems

Excellent communication skills

Organisational skills

Teamwork

Fostering innovation

Education

Degree in Mechanical Engineering

Tools

AutoCAD

Job description

Ready to find the right role for you?

Salary: Competitive salary plus annual bonus, company car / allowance, pension

Location: Home based with travel to Veolia sites

When you see the world as we do, you see the chance to help the world take better care of its resources, and help it become a better place for everyone. It's why we're looking for someone who's just as committed as we are, to push for genuine change and bring our ambition of Ecological Transformation to life.

We know that everyone here at Veolia can help us work alongside our communities, look after the environment, and contribute to our inclusive culture.

As a Senior Mechanical Design Engineer, you will deliver conceptual and detailed design for energy systems including District Heating Networks, Energy Centres, HVAC, LTHW, Chilled Water, Heat Pumps (Air/Water/Geothermal Source), Low Carbon Heat Networks, Steam, and CHP.

The Senior Mechanical Design Engineer will conduct energy audits and surveys to identify Energy Conservation Measures (ECM), assess existing systems, and recommend efficiency interventions to achieve net zero targets.

What we can offer you

• Access to our company pension scheme
• Discounts on everything from groceries to well known retailers
• Access to a range of resources to support your physical, mental and financial health; so you can lean on us whenever you need to
• 24 hour access to a virtual GP, 365 days a year, for you and family members in your household
• One paid days leave every year to volunteer and support your community
• Ongoing training and development opportunities, allowing you to reach your full potential

What you'll be doing

• Lead multidisciplinary engineering teams, owning mechanical design elements including P&IDs for energy centres, sizing boilers, pumps, and components while coordinating electrical/control, process, and civil integration.
• Act as Technical Lead for Business Development opportunities from pre‑qualification through concept design, internal approval, proposal submission, and construction handover.
• Lead client presentations showcasing capabilities and solutions, addressing specific design challenges throughout the development process.
• Prepare tender packages for outline designs, collaborating with construction teams on programmes, resourcing, procurement strategies, and risk identification/mitigation.
• Support Go/NoGo process by rapidly assessing technical and commercial viability, making formal recommendations as required.
• Develop energy generation, efficiency, and distribution solutions with clients to deliver resilience, carbon reduction, and cost savings across project lifecycles.
• Build supplier relationships to develop technical solutions, prepare quotations, and challenge scope, costs, timelines, and safety records.
• Identify and manage development project risks, working with Supply Chain and Legal to ensure back‑to‑back risk transfer with partners.
• Drive innovation to create differentiators in offerings while ensuring technical and commercial due diligence on new technologies.
• Provide technical leadership and mentorship to junior engineers, fostering a culture of technical excellence and innovation.

What we're looking for

• Educated to degree level within Mechanical Engineering
• Experience designing energy systems
• Experience working within the energy industry
• Strong organisational and time management skills
• Excellent communication and interpersonal skills, capable of fostering teamwork and engaging constructively with clients
• Familiarity with large–scale thermal generating plants such as large shell & tube boilers and CHP engines is essential.
• Experience with Heat Pump systems and renewables.
• AutoCAD experience
• UK Driving Licence

What's next

Apply today, so we can make a difference for generations to come.

We're proud to have been named as one of The Sunday Times Best Places to Work for three consecutive years in 2023, 2024 and 2025. This consistent recognition reflects our commitment to our people, demonstrating that Veolia is not just transforming the environment, we're also transforming what it means to have a rewarding, purposeful career.

We're dedicated to supporting you throughout your application journey, offering adjustments where reasonable and appropriate. As a proud Disability Confident Employer, we will offer an interview to applicants with a disability or long–term condition who opt‑in to the Disability Confident scheme, and meet the minimum criteria for our roles.

We're also committed to ensuring that all applicants and colleagues receive fair treatment without discrimination on any grounds, aiming to create a diverse and inclusive workplace where everyone can thrive.