Senior Software Engineer - Connected Warfare

iO Associates; England; Hybrid; GBP 100,000; Full time

Job summary

An innovative firm is seeking a Senior Software Engineer to work on mission-critical software solutions for defence operations. This role involves architecting integrations with third-party systems, developing secure data flows, and delivering advanced capabilities to military customers. The ideal candidate will have a strong engineering background and experience in large-scale data processing. This position offers a competitive package, including fully covered private medical insurance and generous holiday allowance. If you're passionate about shaping the future of defence technology, this opportunity is for you.

Benefits

Private Medical Insurance

Generous holiday allowance

Pension

Daily meals

Relocation support

Commuter benefits

Professional development stipend

Qualifications

• 4+ years experience with programming languages like Java, Python, or C++.
• Strong engineering background in CS, Software Engineering, Mathematics, or Physics.

Responsibilities

• Integrate third-party systems with command and control platforms.
• Build scalable data pipelines across varied networks and security domains.
• Develop APIs and connectors for legacy and modern defence systems.

Skills

Java

Python

C++

Rust

Go

JavaScript

Large-scale data processing

Customer-facing skills

Education

Computer Science

Software Engineering

Mathematics

Physics

Job description

Senior Software Engineer - Defence | Circa £100K + Competitive Package | South West - Hybrid

About the Role
Work on mission-critical software solutions for defence operations. You'll architect integrations with third-party systems, develop secure data flows across networked domains, and deliver advanced capabilities directly to UK military customers.

Key Responsibilities
* Integrate third-party systems with advanced command and control platforms
* Build scalable data pipelines across varied networks and security domains
* Develop APIs and connectors for legacy and modern defence systems
* Deploy software in non-standard or degraded environments
* Represent technical capabilities directly to defence clients
* Travel to customer sites for deployment and support

Required Skills
* 4+ years experience with languages like Java, Python, C++, Rust, Go, or JavaScript
* Strong engineering background (CS, Software Engineering, Mathematics, or Physics)
* Experience with large-scale data processing and complex systems
* Comfortable working in a customer-facing, mission-driven environment
* Eligible for UK Security Clearance
* Willing to travel for field deployments

Preferred Skills
* Background in networking, distributed systems, or sensor fusion
* Experience deploying software in defence or secure/government environments
* Familiarity with degraded or constrained network communications
* Knowledge of real-time systems, autonomy, or AI integration

Benefits
* Fully covered Private Medical Insurance
* Generous holiday allowance and pension
* Daily meals, relocation support, commuter benefits
* Professional development stipend

Interested?
Apply now to help shape the future of defence technology with advanced software and real-world impact.