Lead Application Security Engineer

JR United Kingdom; Birmingham; Remote; GBP 80,000 - 110,000; Full time

Job summary

A technology-driven FinTech company is seeking a Lead Application Security Engineer who will take full ownership of the application security landscape. The role involves deeply engaging with coding practices, identifying vulnerabilities, and contributing to a security-centric culture. If you have a proactive mindset and experience with secure coding and application security, this opportunity allows you to lead and grow your own team in a highly impactful role.

Qualifications

• Hands-on experience in application security.
• Background in credit cards, payments, or financial transaction systems.
• Ability to work remotely from within the UK.

Responsibilities

• Actively identifying vulnerabilities in applications.
• Performing penetration testing and secure code reviews.
• Advising on product and architectural design from a security perspective.

Skills

Application Security

Penetration Testing

Secure Coding

Threat Modelling

Tools

OWASP Top 10

SAST

DAST

Azure

Job description

Lead Application Security Engineer, birmingham

Client:

WeDo

Location:

birmingham, United Kingdom

Job Category:

Other

-

EU work permit required:

Yes

Job Views:

5

Posted:

26.06.2025

Expiry Date:

10.08.2025

Job Description:

Title: Lead Application Security Engineer

Location: Fully Remote (UK-based)

Sector: FinTech / Digital Consumer Finance

We’re recruiting on behalf of a UK-based FinTech that’s simplifying how consumers engage with credit – offering digital credit cards and financial services built on cloud-native architecture and driven by data.

They are looking to hire a highly technical, hands-on Lead Application Security Engineer to take full ownership of the application security landscape – not from a policy or governance standpoint, but through deep, practical expertise in identifying and fixing vulnerabilities across live systems.

This role is perfect for a white hat hacker mindset – someone who thrives in proactively breaking applications, exposing flaws in logic, authentication, payment processing, or APIs, and using creativity (not just tooling) to harden applications from real-world threats.

What Makes This Role Stand Out?

• You’ll be hands-on: This is not a governance or compliance function. It’s about deep technical engagement with the codebase, systems, and application architecture.
• You’re walking into a mature environment: The company already has Secure SDLC and DevSecOps practices in place. This isn’t a ground-up build – it’s about stress-testing and strengthening what’s already built.
• You’ll have impact and visibility: Reporting to the CIO, with close collaboration with the Head of Information Security (compliance), you’ll shape the AppSec strategy while also getting into the code.
• You’ll build your own team: This role includes team growth – you’ll start as a leader and grow your own capability beneath you.

What You’ll Be Doing:

• Actively identifying vulnerabilities in applications, especially around authentication flows, payments, and sensitive data handling
• Thinking creatively and adversarially – “breaking the app” to protect it
• Performing penetration testing, threat modelling, and secure code reviews
• Working directly with developers to integrate security best practices into an already-operational DevSecOps pipeline
• Advising on product and architectural design from a security-first lens
• Contributing to a security culture that prioritises customer trust and system integrity

What We’re Looking For:

• Deep hands-on experience in application security – not just theory, but experience in secure coding, manual testing, and fixing complex vulnerabilities
• A proven background in credit cards, payments, or financial transaction systems
• Understanding of modern application architectures (APIs, microservices, cloud platforms – likely Azure)
• Familiarity with OWASP Top 10, SAST/DAST, and a variety of pen testing techniques
• A desire to build and lead a team, while remaining technical and practical day to day
• Right to work in the UK and ability to work remotely from within the UK

Recruitment Process:

• Initial call with Head of Engineering
• Second stage with CIO
• Final conversation and potentially a take-home exercise

If you're ready to be the attacker before the attacker is, and want to lead AppSec in an ambitious and growing FinTech, we’d love to hear from you.

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Created on 26/06/2025 by JR United Kingdom