Senior Mechanical Engineer

Our client, a leading provider of advanced RF and communication solutions for aerospace, defence, and security applications, is currently seeking a Senior Mechanical Engineer to join their team.

Key Responsibilities:

Lead the mechanical design and development of antenna systems and RF equipment
Perform structural, thermal, and vibration analysis to ensure product performance in harsh environments
Deliver detailed designs using CAD tools (e.g. SolidWorks, Siemens NX, or similar)
Conduct and review engineering calculations (stress, strain, fatigue, thermal performance, etc.)
Support environmental qualification testing (vibration, shock, thermal, IP ratings)
Ensure designs meet military and aerospace standards (e.g. DEF STAN, MIL-STD)
Collaborate with RF, electronics, systems, and manufacturing teams to optimise designs
Lead or support design reviews, technical governance, and documentation
Provide technical leadership and mentorship to junior engineers
Support manufacturing, suppliers, and production teams, including DFM/DFA activities
Participate in root cause analysis and continuous improvement activities

Job Requirements:

Essential:

Degree-qualified in Mechanical Engineering or related discipline
Proven experience in a senior mechanical engineering role within defence, aerospace, or complex product environments
Strong background in mechanical design and analysis
Experience with FEA tools (e.g. Ansys, Nastran, Abaqus)
Knowledge of environmental and structural requirements for ruggedised equipment
Experience delivering projects through the full product lifecycle
Understanding of manufacturing processes (machining, casting, composites, etc.)
Strong communication skills with ability to engage cross-functional teams and stakeholders

Desirable:

Experience with RF/antenna systems or electronic enclosures
Knowledge of IP sealing, EMC shielding, or thermal management
Experience working to defence/aerospace standards
Chartered Engineer status (or working towards)
Experience in a regulated engineering environment
Security clearance (SC/DV)

Key Competencies:

Analytical and detail-oriented engineering approach
Strong problem-solving and troubleshooting skills
Ability to lead technical decisions and influence stakeholders
Effective team collaboration and mentoring
High level of accountability and quality focus

Benefits:

Opportunity to work on cutting-edge defence and aerospace technologies
Collaborative and innovative engineering environment
Career progression and professional development support (e.g. chartership)
Employee benefits package
If you are an experienced Senior Mechanical Engineer looking for a permanent role within the defence and security sector, we would love to hear from you. Apply now to join our client's dynamic and talented team in Marlow, Buckinghamshire