Senior HVAC Engineer - Military Veterans
at Amentum
We'll inspire and empower you to deliver your best work so you can evolve, grow and succeed - today and into tomorrow. With more than 55,000 people in 40+ countries, working with us offers an exciting range of opportunities to develop your career within a supportive and diverse team who always strive to do the right thing for our people, clients and communities.
People are our greatest asset, and we offer a competitive package to retain and attract the best talent.
In addition to the benefits you'd expect, UK employees also receive free single medical cover and digital GP service, family-friendly benefits such as enhanced parental leave pay and free membership of employee assistance and parental programmes, plus reimbursement towards relevant professional development and memberships. We also give back to our communities through our Collectively program which incorporates matched-funding, paid volunteering time and charitable donations.
Work-life balance and flexibility is a key focus area for us. We're happy to discuss hybrid, part-time and flexible working hours, patterns and locations to suit you and our business.
About the opportunity:
Our Critical Mission Solutions business - we are invested in you and your success. Everything we do - whether Aerospace, Defence, Intelligence, Information Technology, Cybersecurity, Nuclear, Automotive, or Telecommunications - is more than just a project. It is our challenge as human beings, too. That is why we bring a thoughtful and collaborative approach to every one of our partnerships.
It is our promise to challenge the status quo as we redefine how to solve the world's greatest challenges and transform big ideas into intelligent solutions for a more connected, sustainable world.
The team in Warrington requires a Senior HVAC Engineer to support the HVAC Capability team in all aspects of HVAC and Building Services.
Some of your duties will be:
- Design of ventilation systems from basic principles which shall include but not limited to: Review of room data sheets
- Calculating required air change rates for free cooling, containment, etc./ Calculating airflow rates to enable duct sizing and pressure loss calculations for fan duties/ Develop HVAC Fire and Control Philosophy;
- Production of HVAC system design deliverables, specifying heat rejection plant (eg. air / water cooled condensers, heat pumps and heat recovery systems of varying types. The design of HVAC systems for cooling industrial process environments.
- Production of system schematics / Engineering Flow Diagrams (EFDs).
- Mentor junior staff, graduates and apprentices in nuclear ventilation design.
Requirements
- Knowledge and experience of UK regulations is essential.
- Able to produce and check psychrometric calculations.
- Knowledge of steam and condensate processes and steam system design.
- Use of industry standard software such as Hevacomp, Open Buildings, Autocad 2D/3D, Revit and Pipenet.
- Experience in the delivery of written work, eg. Functional Specifications, Basis of Design, Equipment Specifications and Validation and Verification plans.
- Extensive experience in delivering in Building Services design.
Our Culture
Our values stand on a foundation of safety, integrity, inclusion and diversity. We put people at the heart of our business and we truly believe that by supporting one another through our culture of caring, we all succeed. We value positive mental health and a sense of belonging for all employees. Find out more
We aim to embed inclusion and diversity in everything we do. We know that if we are inclusive, we're more connected, and if we are diverse, we're more creative. We accept people for who they are, regardless of age, disability, gender identity, gender expression, marital status, mental health, race, faith or belief, sexual orientation, socioeconomic background, and whether you're pregnant or on family leave. This is reflected in our wide range of Global Employee Networks centred on inclusion and diversity - ACE, Careers, Enlace, Harambee, OneWorld, Prism, Vetnet, and Women's - find out more about our employee networks here.
We partner with VERCIDA to help us attract and retain diverse talent. For greater online accessibility please visit www.vercida.com to view and access our roles. As a Disability Confident employer, we will interview all disabled applicants who meet the minimum criteria for a vacancy. We welcome applications from candidates who are seeking flexible working and from those who may not meet all the listed requirements for a role
If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team.
Warrington, England

Amentum brings industry-best expertise, processes, and technology to ensure the availability and reliability of our Government and commercial clients’ vital facilities and equipment. We apply our culture of excellence to operate, maintain, and manage your global assets and complex supply chains to meet modern challenges at home and abroad. You get the confidence that comes from a partner with on a century-long heritage of unrelenting dedication to our clients’ missions across the DoD, civilian agencies, and the IC.
We are looking for skilled Veterans interested in continuing your career in aviation, global logistics, IT and Network support, and also unmanned systems.
We currently have positions open nationwide and globally to include: Kuwait, Iraq, and other overseas locations!
Amentum’s skilled workforce lives with outcomes rather than just works on them. Our employees hold the most sought-after certifications in the industry, including Program Management Professional (PMP), IT/Cyber, ITIL, and Professional Scrum Master (PSM). Our teams who maintain and modify vehicles, aircraft, and weapons systems work within disciplined environments certified to AS9001D, ISO 9001:2015, AS9110B, and AS9100C standards.
Whether it’s managing facilities supporting the IC’s classified missions, operating UAVs that protect our soldiers, or maintaining military equipment at remote bases abroad, Amentum has the experience, passion, and commitment to meet your critical needs.
What happens after I apply?
First, you will want to ensure your RecruitMilitary profile is up to date, and you also have the most up to date resume to provide. Once you apply for the role you will be re-directed to complete your employment application on Amentum's career site. Once you complete that application a recruiter will review your skills and qualifications and reach out to you about the role as appropriate.