Software Engineer | Defence Start-Up | London

Oho Group; Greater London; On-site; GBP 80,000 - 120,000; Full time

Benefits offered by this job

Equity

Autonomy

Impactful projects

Job summary

Oho Group in London is seeking a Software Engineer to build mission-critical systems with real-world impact. You’ll join a small, high-calibre team with significant ownership and end-to-end responsibility over the systems you build.

You are a true generalist, comfortable across backend, infrastructure, data and automation, with 4+ years of professional software development experience and proficiency in Python, TypeScript, Rust, Go, Java or C++.

Qualifications

• 4+ years of professional software development experience.
• Generalist capable of backend, infrastructure, data, and automation.
• Thrives in fast-paced, high-autonomy environments.

Responsibilities

• Own end-to-end ownership over developed systems from design to deployment.
• Work across backend, infrastructure and automation to deliver mission-critical software.
• Contribute to defence-related technology with real-world impact.

Skills

4+ years experience

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

If you’re a strong Software Engineer who wants to build challenging technology that actually matters, let’s chat.

Software Engineer | Defence Start-Up | London