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- Tasks: Design and implement security controls to protect systems and data while collaborating with engineering teams.
- Company: Leading global trading firm with an engineering-first culture and collaborative environment.
- Benefits: Competitive compensation package, hands-on experience, and a focus on innovation.
- Other info: Opportunity to work in a fast-paced environment with excellent career growth potential.
- Why this job: Join a high-calibre team and make a real impact on security in a dynamic tech ecosystem.
- Qualifications: 3-7 years in security engineering, strong scripting skills, and a hands-on mindset.
We’re partnering with a leading global trading firm known for its engineering-first culture and highly collaborative environment. This role sits within a small, high-calibre security team responsible for safeguarding a complex, performance-driven technology ecosystem that spans trading systems, research infrastructure, and corporate platforms. This is a hands-on security engineering position with broad scope - covering everything from building preventative controls to responding to real-world threats and advising engineers across the business. The environment rewards pragmatic thinking over rigid process, with a strong emphasis on understanding trade-offs and applying security in a way that supports, rather than blocks, innovation.
- Design and implement security controls that protect systems, users, and data across the organisation.
- Partner with engineering and infrastructure teams to embed security into systems and workflows.
- Investigate security events and contribute to incident response efforts where required.
- Provide practical guidance to teams on secure design, implementation, and operational practices.
- Build internal tools and automation to improve detection, response, and overall security posture.
- Contribute to firm-wide initiatives that raise awareness and improve day-to-day security behaviours.
- Support threat modelling exercises and help teams make informed, risk-based decisions.
- Continuously refine security approaches to balance risk, usability, and performance.
3-7 years’ experience in security engineering, infrastructure security, or a related technical field.
- Strong scripting or programming capability (Python or similar), with an emphasis on automation.
- Experience managing code and configurations using version control systems.
- Solid understanding of core security concepts including threat modelling, attack vectors, and defensive controls.
- Ability to assess risk pragmatically and explain security decisions in context.
- Hands-on mindset - comfortable building tools, not just recommending solutions.
- Good personal security practices and the ability to articulate and justify them.
- (Preferred) Experience working in engineering-led environments where security is embedded rather than siloed.
Security Engineer (Offensive & Defensive Engineering) | Quantitative Analysis and Trading Leader in City of London employer: Techfellow Limited
Contact Detail:
Techfellow Limited Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Security Engineer (Offensive & Defensive Engineering) | Quantitative Analysis and Trading Leader in City of London
✨Tip Number 1
Network like a pro! Reach out to folks in the industry, especially those at the trading firm you're eyeing. A friendly chat can open doors and give you insights that a job description just can't.
✨Tip Number 2
Show off your skills! If you've got a portfolio of projects or contributions to open-source security tools, make sure to highlight them. Practical examples of your work can really set you apart from the crowd.
✨Tip Number 3
Prepare for the technical interview! Brush up on your scripting skills, especially in Python, and be ready to discuss real-world scenarios where you've implemented security controls. They want to see your hands-on mindset in action!
✨Tip Number 4
Apply through our website! We love seeing candidates who take the initiative. Plus, it gives you a chance to showcase your enthusiasm for joining a collaborative, engineering-first culture.
We think you need these skills to ace Security Engineer (Offensive & Defensive Engineering) | Quantitative Analysis and Trading Leader in City of London
Some tips for your application 🫡
Show Your Passion for Security: When writing your application, let your enthusiasm for security engineering shine through. Share specific examples of projects or experiences that highlight your hands-on mindset and how you've tackled real-world threats.
Tailor Your Application: Make sure to customise your CV and cover letter to reflect the skills and experiences mentioned in the job description. We want to see how your background aligns with our engineering-first culture and collaborative environment.
Highlight Your Technical Skills: Don’t forget to showcase your scripting or programming capabilities, especially in Python or similar languages. Mention any tools or automation you've built, as this is key for us in assessing your fit for the role.
Apply Through Our Website: We encourage you to submit your application directly through our website. This way, we can ensure your application gets the attention it deserves and you can easily track its progress!
How to prepare for a job interview at Techfellow Limited
✨Know Your Security Fundamentals
Make sure you brush up on core security concepts like threat modelling, attack vectors, and defensive controls. Be ready to discuss how these apply in real-world scenarios, especially in a trading environment. This will show that you understand the complexities of the role.
✨Show Off Your Hands-On Skills
Since this is a hands-on position, be prepared to talk about your experience building tools and automating processes. Bring examples of your scripting or programming work, particularly in Python or similar languages, to demonstrate your capability in a practical context.
✨Emphasise Collaboration
This role requires working closely with engineering and infrastructure teams. Highlight any past experiences where you've successfully partnered with other teams to embed security into systems. Discuss how you can balance security needs with innovation to support the business.
✨Prepare for Scenario-Based Questions
Expect questions that assess your ability to respond to real-world threats and incidents. Think through potential scenarios you might face in this role and how you would approach them. This will help you articulate your pragmatic thinking and risk assessment skills effectively.