Find a job 
Featured Companies 
Featured Universities 
For Companies At a Glance
- Tasks: Lead security initiatives and embed security in software development processes.
- Company: A leading fintech company focused on innovation and security.
- Benefits: Hybrid work model, competitive salary, and opportunities for professional growth.
- Why this job: Make a real impact by shaping secure solutions in a dynamic environment.
- Qualifications: 3+ years in application security or strong software engineering with a security focus.
- Other info: Join a collaborative team and influence best practices in security.
The predicted salary is between 36000 - 60000 ÂŁ per year.
A leading fintech company is seeking a Lead AppSec Engineer to join their established team. You’ll be instrumental in embedding security into every stage of the software development lifecycle—guiding engineers, shaping best practices, and driving secure, scalable solutions across our platform.
Responsibilities
- Security Advisory: Serve as the go-to expert for application security across engineering teams—providing hands-on guidance, resolving concerns, and fostering a security-first mindset.
- DevSecOps Enablement: Promote and implement secure development practices across CI/CD pipelines, secrets and key management, dependency management, and secure design.
- Vulnerability Management: Lead vulnerability remediation efforts—triaging findings, prioritizing risks, and partnering with teams to deliver effective, pragmatic fixes.
- Tooling & Automation: Integrate security tools (e.g., SAST, DAST, SCA, secrets scanning) into developer workflows, ensuring automation is both scalable and developer-friendly.
- Cloud Security Collaboration: Work alongside infrastructure teams to ensure secure configuration of AWS and Azure environments, with a focus on IAM, network security, encryption, and observability.
- Architecture & Design Reviews: Provide input and recommendations to ensure new services and features are secure by design.
- Continuous Improvement: Stay ahead of the curve on security trends, tools, and threats—proactively recommending enhancements to our security posture.
Skills needed
- 3+ years of experience in application security, or a strong software engineering background with a security focus.
- Hands-on experience with secure CI/CD practices, DevSecOps methodologies, GitHub workflows, and Terraform.
- Deep understanding of cloud security principles in AWS and Azure, particularly around IAM, secrets management, and networking.
- Proficient in secure coding practices, threat modeling, and vulnerability remediation.
- Familiar with a range of security tooling including static and dynamic analysis, software composition analysis, and container security.
- Excellent communication and collaboration skills—able to translate complex security concepts into practical guidance for engineers.
- Proven ability to influence development teams and drive adoption of security best practices.
- Strong analytical and prioritization skills with a pragmatic, risk-based approach to decision-making.
Nice to have
- If you have come from a development / penetration testing background this would be advantageous for my client.
- Pen testing experience.
- Certifications (CEH) / OSCP.
This role is on a hybrid basis with 2 to 3 days on-site in central London and offers a 2 - 3 stage interview process. Interview slots available - apply now to be considered!
Lead Security Engineer in London employer: Halian | Managed Services, Recruitment Agency & Contract Staffing
Contact Detail:
Halian | Managed Services, Recruitment Agency & Contract Staffing Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Lead Security Engineer in London
✨Tip Number 1
Network like a pro! Reach out to folks in the fintech space, especially those working in security roles. Attend meetups or webinars, and don’t be shy about sliding into DMs on LinkedIn. You never know who might have the inside scoop on job openings!
✨Tip Number 2
Prepare for those interviews by brushing up on your technical skills and security concepts. Practice explaining complex ideas in simple terms—this will show you can communicate effectively with engineers. Remember, it’s not just about what you know, but how you share that knowledge!
✨Tip Number 3
Showcase your hands-on experience! If you've worked with CI/CD pipelines or cloud security, be ready to discuss specific projects. Use examples that highlight your problem-solving skills and how you’ve driven security best practices in past roles.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, we love seeing candidates who are proactive about their job search. So, hit that apply button and let’s get you in for an interview!
We think you need these skills to ace Lead Security Engineer in London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV speaks directly to the Lead Security Engineer role. Highlight your experience in application security and any relevant projects you've worked on. We want to see how your skills align with our needs!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're passionate about security and how you can contribute to our team. We love seeing enthusiasm and a clear understanding of the role.
Showcase Your Skills: Don’t just list your skills—demonstrate them! Include specific examples of how you've implemented secure practices or resolved vulnerabilities in past roles. We appreciate concrete evidence of your expertise.
Apply Through Our Website: We encourage you to apply through our website for the best chance of being noticed. It helps us keep track of applications and ensures you’re considered for the role. Don’t miss out—submit your application today!
How to prepare for a job interview at Halian | Managed Services, Recruitment Agency & Contract Staffing
✨Know Your Stuff
Make sure you brush up on your application security knowledge. Familiarise yourself with secure coding practices, DevSecOps methodologies, and the specific tools mentioned in the job description. Being able to discuss these topics confidently will show that you're not just a good fit, but that you’re genuinely passionate about security.
✨Showcase Your Experience
Prepare to share specific examples from your past roles where you've successfully implemented security measures or led vulnerability remediation efforts. Use the STAR method (Situation, Task, Action, Result) to structure your answers, making it easy for the interviewers to see your impact.
✨Communicate Clearly
Since excellent communication skills are crucial for this role, practice explaining complex security concepts in simple terms. Think about how you would guide engineers who may not have a security background. This will demonstrate your ability to foster a security-first mindset across teams.
✨Stay Current
Keep yourself updated on the latest security trends and threats. Be ready to discuss recent developments in cloud security, especially around AWS and Azure. Showing that you’re proactive about continuous improvement will resonate well with the interviewers.
