Senior Software Engineer

Defence Technology | Chertsey, Surrey | Hybrid (2 days on-site) | Up to -80,000 + Package

The Company

A well-established, specialist defence and technology business based in Chertsey, Surrey. Operating as a flat, agile SME, the company delivers high-quality systems and products into the defence sector, offering genuine exposure across the full engineering lifecycle. You will be working in a technically driven environment where individual contribution has real impact on the business and its customers.

The Role

We are looking for a Senior Software Engineer to work within and lead a team of design engineers, delivering innovative software solutions into complex defence programmes. You will be responsible for translating system requirements into robust software architectures, managing delivery against project timescales and budget, and mentoring junior engineers within the team.

Key Responsibilities

• Define architectural and detailed software designs as part of the wider system definition
• Lead and mentor a software engineering team on a day-to-day basis
• Work cross-functionally with firmware and electronics engineers to ensure system-level requirements are met
• Monitor software compliance with project and company standards
• Present designs at review stages both internally and to customers
• Manage estimation, planning and progress against project milestones

What You''ll Need

• Strong C++ development experience, ideally to industry standards on Linux and/or Windows platforms
• Experience in acoustic or RF signal processing (essential)
• Familiarity with structured UML-based design tools (e.g. Enterprise Architect)
• Experience of software verification and validation against contractual requirements
• Exposure to embedded or real-time application software
• Experience with Docker containers or equivalent containerisation
• Strong technical documentation and stakeholder communication skills
• Degree in Engineering, Mathematics, Computer Science or a related STEM subject (or equivalent experience)
• Eligibility to obtain UK SC security clearance
• Sole UK National from birth (required for security clearance purposes)
• Full UK driving licence

What''s On Offer

• Up to -80,000 base salary plus package
• Paid overtime or time off in lieu (up to 24 additional days per year)
• Flexible core hours (09:30-12:00 and 14:00-16:00)
• Competitive employer-matched pension
• Private medical care
• Onsite gym access
• Salary sacrifice schemes (cycle to work, tech)
• Structured training and career development
• Holiday closedown over Christmas/New Year
• Relocation package available

Candidates must hold Sole UK Nationality from birth.