Software Engineer – Defence Tech Start-Up, London

OHO Group (Lithuania); Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

OHO Group (Lithuania) is seeking a Software Engineer for a defence start-up in London. The role offers significant ownership over mission-critical systems and end-to-end responsibility for the software you build.

You will join a small, high-calibre team designing, building, and deploying core technology with real-world impact in a fast-paced, autonomous environment. The position targets engineers with interest in defence, aerospace, or national security tech.

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
• Interested in defence, aerospace, or national security technology

Skills

4+ years exp

Python

TypeScript

Rust

Go

Java

C++

Generalist

High autonomy

Job description

OHO Group (Lithuania) is seeking a Software Engineer for a defence start-up in London. The role offers significant ownership over mission-critical systems and end-to-end responsibility for the software you build.

You will join a small, high-calibre team designing, building, and deploying core technology with real-world impact in a fast-paced, autonomous environment. The position targets engineers with interest in defence, aerospace, or national security tech.