Senior Design Engineer

ALTEN is a global engineering and technology consultancy operating across over 35 countries worldwide. We partner with industry leaders across sectors including Aeronautics, Aerospace, Defence, Naval, Automotive, Energy, Rail, IT and many more to deliver innovative engineering solutions that drive technological advancement & support sustainable transformation. Our teams of passionate and agile engineers work on cutting-edge projects that shape the future of technology and sustainability. At ALTEN, we empower talented engineers to innovate, solve complex challenges, and deliver impactful solutions that build tomorrow’s world—today. Join us and start building tomorrow’s world today! As a Senior Design Engineer, you will join our Brentwood team to support our activities within the marine, industrial, and automotive engineering sectors. You will lead the design and development of innovative engineering solutions supporting alternative power and fuel system integration. Working across the full product lifecycle, from concept through manufacture, testing, and deployment, you will collaborate with internal teams, customers, suppliers, and certification bodies to deliver safe, practical, and high-quality engineering solutions. Location: Brentwood On Site: Hybrid Clearance: Clearable Experience Level: Senior (5-15 years of experience) Key Responsibilities: Generate innovative engineering designs using proven technologies alongside creative problem-solving approaches Lead mechanical design activities from concept development through detailed design and production Apply Design for Manufacture (DFM) and Design for Assembly (DFA) principles throughout the design process Collaborate with CAE engineers to meet structural, vibration, and fluid flow performance requirements Produce design reports and deliver technical presentations to senior stakeholders Ensure CAD designs are structured and released in line with Bill of Materials (BoM) requirements Coordinate with Project Managers and Principal Engineers to achieve project objectives, schedules, and cost targets Support the continuous improvement of engineering design processes, standards, and methodologies Mentor and support junior engineers within the design team Ensure designs comply with applicable engineering and regulatory standards throughout the product lifecycle Required Skills: Strong mechanical design engineering experience across complex engineering products Experience delivering projects from concept through manufacture and deployment Proficiency in CAD design tools, ideally CATIA V5 and/or 3DEXPERIENCE (3DX) Understanding of Design for Manufacture (DFM) and Design for Assembly (DFA) Ability to interpret and work with P&ID drawings Knowledge of structural and vibration analysis principles Understanding of electrical cable routing and management techniques Strong problem-solving, communication, and stakeholder management skills Ability to work independently while contributing effectively within multidisciplinary teams Required Qualifications: A Bachelor’s or Master’s degree in Engineering , or equivalent military experience . 10–15 years of mechanical design engineering experience Experience working to international engineering and regulatory standards Demonstrable experience leading engineering design activities and supporting product development programmes Desirable Skills: Experience across multiple sectors such as automotive, marine, industrial, or alternative energy Experience integrating alternative fuel or propulsion systems Previous mentoring or technical leadership experience Familiarity with low-carbon technologies and sustainable engineering solutions Experience working with certification bodies and regulatory stakeholders Why join us? We bring together entrepreneurial, tech-driven people to deliver innovative solutions for leading companies. At ALTEN, you’ll work on exciting projects, supported by ongoing learning, mentoring, and clear career development tailored to your goals. Join a passionate team and help build tomorrow, today. In short you get: A personalised career path and a rewarding management style A huge diversity of engineering projects and industries Private Medical Insurance Cycle & Tech Scheme Employee assistance programme Life insurance & Pension Scheme Social atmosphere, regular gatherings & team buildings Flexible way of working (role dependent) We are proud to support the Armed Forces Covenant & actively encourage applications from members of the Armed Forces community, including veterans, reservists, service leavers, and military spouses/partners. We recognise the value of military skills and experience and are committed to ensuring that no applicant is unfairly disadvantaged during our recruitment and selection processes. ALTEN is committed to fostering a diverse and inclusive workplace and values the strength that comes from a global mix of backgrounds and perspectives. We welcome applications from all suitably qualified candidates, regardless of background or protected characteristics under the Equality Act 2010. If you require any reasonable adjustments during the recruitment process, please let us know. This role may require you to have or be willing to go through Security Clearance. As part of the onboarding process candidates will be asked to complete a Baseline Personnel Security Standard; details of the evidence required to apply may be found on the government website Gov.UK. If you are unable to meet this and any associated criteria, then your employment may be delayed, or rejected . Details of this will be discussed with you at interview.