Founding Software Engineer | Cybersecurity Start-Up | London

Oho Group; Greater London; On-site; GBP 120,000 - 180,000; Full time

Benefits offered by this job

Equity

Ground-floor role

Stock options

Job summary

OHO Group in London is seeking a Founding Software Engineer to join a cybersecurity startup on day one, helping shape product and culture with direct founders collaboration.

You will own core systems, tackle security challenges end-to-end, and drive architecture in a fast-moving environment. A builder’s mindset and strong collaboration are essential for success.

Qualifications

• 5+ years of software engineering experience
• Proficiency in Python, C#, Go, or Java
• End-to-end development across full product lifecycle
• A builder’s mindset in fast-moving environments
• Excellent problem-solving and collaborative skills

Responsibilities

• Design and build core systems from scratch
• Solve high-impact security challenges across the stack
• Collaborate with founders on product direction and technical strategy
• Take ownership shaping the company’s future

Skills

End-to-end development

Builder mindset

Problem solving

Collaborative

Tools

Python

C#

Go

Java

Job description

Founding Software Engineer | Cybersecurity Start-Up | London

Help build the future of cybersecurity from day one.

Founding Software Engineer required for an early-stage cybersecurity start-up on a mission to transform how organisations secure their data and infrastructure. Built by a founding team with a strong track record of building and scaling successful companies in security, this is a rare opportunity to join at the ground floor and shape both the product and the culture.

What you’ll do

• Play a key role in designing and building core systems from scratch
• Work across the stack to solve complex, high-impact security challenges
• Collaborate directly with the founders on product direction and technical strategy
• Take real ownership - your decisions will shape the company’s future

About you

• 5+ years of software engineering experience in a professional environment
• Proficiency in one or more of: Python, C#, Go, or Java
• Experience delivering end-to-end development across the full product lifecycle
• A builder’s mindset - you thrive in fast-moving, ambiguous environments
• Excellent problem-solving ability and a collaborative approach

Why this role?

• Competitive salary + meaningful equity
• Join a world class founding team with a proven start-up pedigree
• Make a meaningful impact from day one - no red tape, no layers
• Be part of solving some of the most critical challenges in cybersecurity

Founding Software Engineer | Cybersecurity Start-Up | London