Application Security Engineer JavaScript

Client Server
Greater London, UK
5 days ago
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Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Compensation
£68,000.0 - £80,000.0
Working hours
Regular working hours

Tech stack

JavaScript (Programming Language) Artificial Intelligence Software System Penetration Testing Computer Vision Biometrics Web Development Reverse Engineering Secure Coding Web Application Security Software Engineering Web Applications Software Security
+3 more
Cybercrime Production Code Vulnerability Analysis

Job description

You could be progressing your career at a global leader in Computer Vision, AI and biometric identity, whose technology protects governments, critical infrastructure and some of the world’s largest enterprises against identity fraud, deepfakes and sophisticated cyber threats.

As an Application Security Engineer you’ll collaborate closely with the web development team to ensure security is at the centre of all web based applications. Joining a specialist security team, you’ll focus on offensive web security, acting as the bridge between Security and Engineering. You’ll perform penetration testing, reverse engineering and vulnerability assessments, identifying security risks and working closely with developers to build secure, resilient web applications from the ground up.

This is a highly collaborative role where you’ll provide expert guidance on secure coding practices, influence architecture and design decisions and help embed security throughout the software development lifecycle., You can work from home most of the time, meeting up with colleagues in the London office approximately twice a month for innovation sessions and team meetings.

Requirements

  • You have strong experience in web application security and offensive security testing
  • You have hands-on expertise in penetration testing and reverse engineering
  • You have a deep understanding of modern web security vulnerabilities and mitigation techniques
  • you’re comfortable writing and reviewing production code, not just identifying vulnerabilities
  • you’re collaborative and pragmatic, able to work closely with engineering teams

Benefits & conditions

  • Salary to £80k
  • Bonus
  • Equity
  • Excellent career progression

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Good distractions

Talks and stories from around this role — technically off-topic, practically not.

2:39 min

Shifting security testing focus toward critical application logic problems

Julian Totzek-Hallhuber Julian Totzek-Hallhuber · World Congress 2026 Europe

1:41 min

Exploring possession and biometric authentication factors

Clemens Hübner Clemens Hübner · World Congress 2023

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Motivational categories behind modern cybercriminal activities

Mauro Verderosa · LIVE

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Applying secure coding practices and proactive system monitoring

Mihaela-Roxana Ghidersa · LIVE

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Addressing the shortage of application security specialists

Joseph Katsioloudes Joseph Katsioloudes · World Congress 2025

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Integrating biometric face liveness for physical identity checks

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