Application Developer

Location: Bristol, On-site, 5 days per week (due to project classification)
Salary: Up to £64,000 + bonus & excellent benefits
Clearance: British Citizen or Dual UK National with British citizenship

Copello are working with a leading defence technology partner seeking a Principal Software Engineer to join their Human Machine Interface (HMI) and Cyber team, developing cutting-edge laser defence systems for the Royal Navy.

The Role

You’ll take a leading role in the technical delivery of complex software solutions, mentoring junior engineers and ensuring high standards across design, implementation, and integration.

What You’ll Bring

• Strong proficiency in C++

• Proven experience delivering complex software systems end-to-end

• Solid understanding of the software development lifecycle

• Excellent problem-solving, communication, and mentoring skills

Desirable experience: OS lockdown, software security, HMI development, or automated testing.

Benefits Include

• Up to £2,500 annual bonus (performance-based)

• Pension up to 14% combined contribution

• Flexi leave (up to 15 extra days)

• Enhanced parental leave

• Paid overtime and flexible working arrangements

• Excellent on-site facilities including subsidised meals and free parking

If you’re a passionate, analytical engineer who thrives on solving complex challenges - we’d love to hear from you.

Please direct any CV's or questions to jennyg@copello.co.uk