Security Engineer (Software) - Banking & Finance

London

Ready to take the next step in your career?

Join a leading algorithmic trading firm using state-of-the-art machine learning to produce price forecasts across more than 53,000 financial instruments spanning equities, fixed income, currencies, commodities, and crypto.

The organization is currently on the lookout for a Software Security Engineer to join its Information Security team, building tools and controls that protect a complex, large-scale technology environment. The ideal candidate will approach security challenges as a software engineer, bringing strong computer science fundamentals and hands-on coding ability rather than a traditional analyst or penetration testing background.

Ready to make a move? Get in touch and apply today!

Responsibilities:

  • Design and develop internal security tools and infrastructure
  • Work with engineering teams to identify security weaknesses and build practical solutions
  • Improve threat detection and security monitoring capabilities
  • Develop defence-in-depth controls
  • Contribute across requirements gathering, architecture, prototyping and development
  • Support a broad range of security and compliance-related projects
  • Help improve authentication, authorisation and other core security systems

Skills/Must Have:

  • 2–5 years of professional software engineering experience
  • Strong computer science and software development fundamentals
  • Proficiency in at least one statically typed programming language
  • A clear interest in security or experience solving security-focused engineering problems
  • A good understanding of systems, infrastructure and how technology is built
  • The ability to write clean, reliable and maintainable code
  • Strong communication skills and the ability to work effectively with other engineers
  • Someone who learns quickly, pays close attention to detail and can work autonomously
  • Development is primarily in Golang, although previous Go experience is not required. Python is also used for scripting.

Desirable Skills:

  • Security-focused personal projects
  • Blogs, research or open-source contributions
  • Experience participating in CTFs
  • Practical security certifications such as OSCP
  • Experience building security tooling or secure infrastructure

Salary:

  • £200,000–£250,000 total compensation, with flexibility for exceptional candidates
Posted 2026-09-18

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