Senior Software Engineer — Equity & Impact (Cybersecurity)

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

Job summary

Oho Group is seeking a Senior Software Engineer in London to join a fast-growing Series A cybersecurity start-up. You will own architecture end-to-end, tackle difficult security-focused problems, and influence product direction within a world-class engineering team.

The role demands 5+ years of software engineering experience across Python/Go/Java/C#, with a strong emphasis on system design and production ownership. London-based, startup pace with meaningful equity.

Qualifications

• 5+ years of professional software engineering experience.
• Proficiency in Python, Go, Java or C#.
• Strong system design and fundamentals.
• Comfortable owning complex technical problems from architecture through production.
• Builder mindset with ownership and delivery focus.

Responsibilities

• Own system architecture from design through production deployment.
• Ship high-impact features with strong quality and reliability.
• Collaborate with founders and the engineering team on technical direction.
• Move quickly while ensuring maintainable, scalable solutions.

Skills

5+ years of experience

Python

Go

Java

C#

System design

Production ownership

Job description

Oho Group is seeking a Senior Software Engineer in London to join a fast-growing Series A cybersecurity start-up. You will own architecture end-to-end, tackle difficult security-focused problems, and influence product direction within a world-class engineering team.

The role demands 5+ years of software engineering experience across Python/Go/Java/C#, with a strong emphasis on system design and production ownership. London-based, startup pace with meaningful equity.