Software Engineer | Defence Start-Up | London

Oho Group; Greater London; On-site; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Meaningful equity

Job summary

Oho Group is seeking a Software Engineer for an early-stage defence start-up based in London. You will join a small, high-calibre team, taking significant ownership and end-to-end responsibility for core technology that has real-world impact.

The role targets a true generalist with 4+ years of software development experience, capable of working across backend, infrastructure, data, and automation in a fast-paced environment.

Qualifications

• 4+ years of professional Software Development experience.
• Proficient in Python, TypeScript, Rust, Go, Java, or C++.
• A true generalist - comfortable working across backend, infrastructure, data, and automation.
• Most effective in fast-paced, high-autonomy environments.
• Motivated by building technology with real-world impact, especially in defence/national security tech.

Responsibilities

• Own end-to-end responsibility over the systems you build.
• Design, build and deploy core technology for mission-critical applications.

Skills

Python

TypeScript

Rust

Go

Java

C++

Job description

Software Engineer | Defence Start-Up | London

Software Engineer required for an early-stage defence technology start-up building mission-critical systems with real-world impact.

You’ll join a small, high-calibre engineering team designing, building, and deploying core technology. This is a deeply hands-on role for someone who wants significant ownership, technical depth, and end-to-end responsibility over the systems they build.

You are

• 4+ years of professional Software Development experience
• Proficient in Python, TypeScript, Rust, Go, Java, or C++
• A true generalist - comfortable working across backend, infrastructure, data, and automation
• Most effective in fast-paced, high-autonomy environments
• Motivated by building technology with real-world impact
• Interested in defence, aerospace, or national security technology

Nice to have

• Early-stage start-up experience
• Experience in robotics, embedded systems, ML, or real-time systems

Why Join?

• Competitive salary + meaningful equity
• Significant influence over product and technical direction
• Work on challenging engineering problems with genuine real-world impact
• Build mission-critical technology within the defence sector
• Join a small, world-class team with significant autonomy and trust

Software Engineer | Defence Start-Up | London