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For Companies At a Glance
- Tasks: Design and implement security controls for Windows systems in a dynamic trading environment.
- Company: Leading global trading and technology firm with a focus on innovation.
- Benefits: Competitive salary package, hybrid working, and opportunities for professional growth.
- Why this job: Join a team tackling complex security challenges and make a real impact.
- Qualifications: 8-14 years in Windows security engineering with strong automation skills.
- Other info: Collaborative culture with excellent career advancement opportunities.
Up to c. £325k Comp Package | Hybrid Working
Role Overview
We are representing a leading global trading and technology firm seeking a Senior Windows Security Engineer to take ownership of the security posture across its Windows systems environment. Sitting within the broader Windows Engineering group, this position plays a key role in safeguarding the firm’s critical infrastructure and ensuring secure, resilient operations across a global technology platform. This newly created senior role is ideal for an experienced engineer with depth and judgment in Windows platform security. You will be responsible for designing and implementing robust security controls, driving vulnerability management initiatives, and developing automation to scale protection across thousands of endpoints and servers. The role is technically hands-on, strategic in influence, and well suited to an engineer who thrives on solving complex security challenges at scale.
Key Responsibilities
- Design, implement, and maintain platform-level security controls across Windows systems in hybrid environments.
- Lead efforts to harden the Windows estate, including application control, host firewalls, auditing, and encryption.
- Drive vulnerability management and patching strategy, ensuring consistent remediation across enterprise endpoints and servers.
- Build automation in PowerShell and related frameworks to streamline detection, response, and compliance workflows.
- Integrate and optimise endpoint protection and EDR solutions, ensuring effective coverage and minimal user friction.
- Collaborate with platform engineers to embed secure-by-default practices into system configuration and deployment pipelines.
- Evaluate new security tools, conduct proof-of-concepts, and contribute to the strategic roadmap for Windows platform defence.
- Monitor, investigate, and respond to potential threats targeting the Windows ecosystem, using telemetry and event data to identify patterns.
- Partner with identity, networking, and infrastructure teams on projects related to Active Directory, Entra ID, and PKI.
- Produce technical documentation and guidance to support operational consistency and knowledge sharing across teams.
What You’ll Bring...
- 8–14 years’ professional experience in Windows systems or security engineering roles within large, distributed environments.
- Deep knowledge of Windows internals and operating system security controls, including kernel-level understanding of process, memory, and privilege management.
- Proven ability to design and implement scalable endpoint security measures (AV/EDR, vulnerability scanning, patch orchestration, and configuration baselines).
- Familiarity with security frameworks and best practices, including OS hardening, access management, and least-privilege enforcement.
- Hands-on experience with Active Directory, Entra ID, and PKI environments, including certificate lifecycle management.
- Strong automation and scripting ability using PowerShell, with the capability to build repeatable, efficient security workflows.
- Understanding of threat tactics and countermeasures relevant to Windows environments, including lateral movement and persistence techniques.
- Experience working in mission-critical hybrid infrastructures, balancing risk, uptime, and performance.
- Excellent communication skills – able to translate complex technical issues into actionable insights for non-specialist teams.
- (Preferred) Exposure to vulnerability assessment tooling, SIEM integration, or event correlation pipelines.
Senior Windows Security Engineer | Technology-Driven Quantitative Trading Firm in London employer: Techfellow Limited
Contact Detail:
Techfellow Limited Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Windows Security Engineer | Technology-Driven Quantitative Trading Firm in London
✨Tip Number 1
Network, network, network! Get out there and connect with people in the industry. Attend meetups, webinars, or even just grab a coffee with someone who works at a firm you admire. You never know when a casual chat could lead to your next big opportunity.
✨Tip Number 2
Show off your skills! Create a portfolio or GitHub repository showcasing your projects, especially those related to Windows security. This gives potential employers a tangible way to see what you can do and how you tackle complex challenges.
✨Tip Number 3
Prepare for interviews by brushing up on common technical questions and scenarios specific to Windows security. Practice explaining your thought process clearly, as communication is key in translating complex issues into actionable insights.
✨Tip Number 4
Don’t forget to apply through our website! We’ve got some fantastic opportunities waiting for you, and applying directly can sometimes give you an edge. Plus, it shows you’re genuinely interested in being part of our team.
We think you need these skills to ace Senior Windows Security Engineer | Technology-Driven Quantitative Trading Firm in London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV reflects the specific skills and experiences mentioned in the job description. Highlight your expertise in Windows security and any relevant projects you've worked on that align with the role.
Craft a Compelling Cover Letter: Use your cover letter to tell us why you're the perfect fit for this Senior Windows Security Engineer position. Share your passion for security and how your background makes you a strong candidate to tackle complex challenges.
Showcase Your Technical Skills: Don’t shy away from detailing your technical abilities, especially in PowerShell and Windows internals. We want to see how you’ve implemented security controls and managed vulnerabilities in past roles.
Apply Through Our Website: For the best chance of success, make sure to apply through our website. This way, we can easily track your application and ensure it gets the attention it deserves!
How to prepare for a job interview at Techfellow Limited
✨Know Your Windows Security Inside Out
Make sure you brush up on your knowledge of Windows internals and security controls. Be ready to discuss specific examples of how you've designed and implemented security measures in past roles, especially around endpoint protection and vulnerability management.
✨Showcase Your Automation Skills
Since the role involves building automation in PowerShell, prepare to talk about your scripting experience. Bring examples of workflows you've created that improved security processes or streamlined compliance tasks, as this will demonstrate your hands-on capabilities.
✨Understand the Bigger Picture
This position requires collaboration with various teams, so be prepared to discuss how you've worked with platform engineers or identity teams in the past. Highlight any projects where you integrated security practices into deployment pipelines or collaborated on Active Directory initiatives.
✨Stay Current with Threat Trends
Familiarise yourself with the latest threat tactics relevant to Windows environments. Be ready to discuss how you've monitored and responded to potential threats in previous roles, using telemetry and event data to inform your strategies.