Senior Security Engineer
Senior Security Engineer

Senior Security Engineer

London Full-Time 36000 - 60000 £ / year (est.) No home office possible
Go Premium
A

At a Glance

  • Tasks: Engineer and automate security into a cutting-edge FinTech platform.
  • Company: High-growth FinTech transforming money management with a focus on security.
  • Benefits: Impactful role, ownership culture, budget for learning, and clear career progression.
  • Why this job: Shape the future of secure financial technology and make a global impact.
  • Qualifications: 5+ years in Security Engineering with strong software skills in Python, Go, or TypeScript.
  • Other info: Mentorship opportunities and a dynamic environment focused on innovation.

The predicted salary is between 36000 - 60000 £ per year.

The Opportunity

Join a high-growth FinTech that’s transforming how millions move and manage their money — where security isn’t an afterthought, it is the product. They’re searching for a hands-on Security Software Engineer who can engineer and automate security into the core of their platform. In this role, you won't just surface vulnerabilities — you’ll eliminate them at the root. You’ll build patterns, tooling, and automation to empower developers to ship secure software at speed.

What You’ll Lead & Deliver

  • Embed security into the SDLC from architecture through production
  • Automate guardrails and integrate security tooling into CI/CD
  • Drive threat modelling + security design reviews for new features
  • Create internal security tools, libraries, and developer workflows
  • Mentor engineers and uplift security engineering craft
  • Partner with product & platform teams to build secure-by-default systems

What You Bring

  • 5+ years in Security Engineering / Product / AppSec roles
  • Strong software engineering skills (Python, Go or TypeScript)
  • Experience securing web, mobile and API architectures at scale
  • Deep knowledge of SAST, DAST, IAST, SCA workflows & automation
  • Familiarity with OWASP Top 10, ASVS, MASVS & modern secure design
  • Understanding of OAuth2, OIDC, WebAuthn and identity auth patterns

Bonus Points For

  • Security engineering experience in FinTech, payments or regulated domains
  • Delivered secure coding training or scaled security champion programs
  • Knowledge of PCI-DSS, PSD2, SCA or financial compliance frameworks

What’s In It For You

  • Huge impact: secure products used globally
  • Ownership in a modern, engineering-led culture
  • Budget for certifications, conferences & continuous learning
  • Clear progression to Staff / Principal Security Engineer

If you’re passionate about building secure systems at scale, engineering elegant solutions, and championing DevSecOps — you’ll thrive here. Ready to shape the future of secure financial technology? Let’s talk.

Senior Security Engineer employer: Atarus

Join a dynamic FinTech scale-up that prioritises security as a core component of its innovative platform, offering you the chance to make a significant impact on global financial technology. With a modern, engineering-led culture, you'll benefit from continuous learning opportunities, mentorship, and a clear path for career progression to senior roles. This is an exciting environment where your expertise in security engineering will be valued and where you can help shape secure systems that empower millions.
A

Contact Detail:

Atarus Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Security Engineer

✨Tip Number 1

Network like a pro! Reach out to folks in the FinTech space, especially those already working at companies you're eyeing. A friendly chat can open doors and give you insider info that could make all the difference.

✨Tip Number 2

Show off your skills! Create a portfolio or GitHub repo showcasing your security projects. This is your chance to demonstrate how you tackle vulnerabilities and build secure systems — let your work speak for itself!

✨Tip Number 3

Prepare for technical interviews by brushing up on your coding skills and security concepts. Practice common interview questions related to SAST, DAST, and secure design patterns. We want you to feel confident and ready to impress!

✨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 — it shows you’re serious about joining our team!

We think you need these skills to ace Senior Security Engineer

Security Engineering
Software Engineering
Python
Go
TypeScript
Web Security
Mobile Security
API Security
SAST
DAST
IAST
SCA Workflows
OWASP Top 10
OAuth2
DevSecOps

Some tips for your application 🫡

Tailor Your CV: Make sure your CV reflects the skills and experiences that align with the Senior Security Engineer role. Highlight your experience in security engineering, especially in FinTech, and don’t forget to mention any relevant programming languages like Python, Go, or TypeScript.

Craft a Compelling Cover Letter: Your cover letter is your chance to show us your passion for security and how you can contribute to our mission. Share specific examples of how you've embedded security into software development processes and any tools you've created or improved.

Showcase Your Projects: If you've worked on any projects related to security, especially in web, mobile, or API architectures, make sure to include them. We love seeing real-world applications of your skills, so don’t hold back!

Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it shows us you’re keen on joining our team!

How to prepare for a job interview at Atarus

✨Know Your Security Fundamentals

Make sure you brush up on your knowledge of security principles, especially those relevant to the FinTech sector. Be prepared to discuss OWASP Top 10 and how you’ve applied secure design in past projects.

✨Showcase Your Technical Skills

Since strong software engineering skills are a must, be ready to demonstrate your proficiency in Python, Go, or TypeScript. Consider preparing a small coding challenge or discussing a project where you automated security processes.

✨Prepare for Scenario-Based Questions

Expect questions that ask how you would handle specific security challenges. Think about past experiences where you identified vulnerabilities and how you eliminated them at the root. Use the STAR method (Situation, Task, Action, Result) to structure your answers.

✨Highlight Your Mentorship Experience

As mentoring is part of the role, be ready to share examples of how you've uplifted the security craft within teams. Discuss any training sessions you’ve led or how you’ve supported colleagues in adopting secure coding practices.

Senior Security Engineer
Atarus
Location: London
Go Premium

Land your dream job quicker with Premium

You’re marked as a top applicant with our partner companies
Individual CV and cover letter feedback including tailoring to specific job roles
Be among the first applications for new jobs with our AI application
1:1 support and career advice from our career coaches
Go Premium

Money-back if you don't land a job in 6-months

A
  • Senior Security Engineer

    London
    Full-Time
    36000 - 60000 £ / year (est.)
  • A

    Atarus

    50-100
Similar positions in other companies
UK’s top job board for Gen Z
discover-jobs-cta
Discover now
>