Senior Application Security Testing Engineer

We are looking for aSenior Application Security Testing Engineer to join our ever-growing Security team. In this role, you will assess and strengthen the security posture of applications and systems, working closely with engineering teams to embed security best practices throughout the development lifecycle.

Responsibilities

• Conduct regular scanning and manual security testing of web applications to identify vulnerabilities
• Track identified issues through to remediation, working closely with development teams to ensure timely fixes
• Perform code-level reviews to identify insecure coding practices and recommend improvements
• Support and strengthen IaaS security across cloud environments, with a particular focus on AWS
• Assess cloud configurations against security best practice and industry benchmarks
• Work within a hybrid cloud environment to implement and operate appropriate security technologies and controls
• Research emerging security threats, vulnerabilities, and exploit techniques relevant to the technology stack
• Respond promptly to newly identified threats and support the implementation of new security requirements
• Contribute to incident response activities as required, maintaining the confidentiality of all investigation information
• Provide technical guidance and oversight to developers on secure coding practices and application security standards
• Champion OWASP principles across the organization, embedding them into the design and development of new solutions
• Collaborate closely with cross-functional teams, contributing a security-first mindset to product and engineering discussions

Requirements

• Bachelor's Degree, preferably in a technical discipline such as Information Systems, Computer Science, or a related field
• A minimum of 3 years' demonstrated experience in manual security testing
• Understanding of security protocols, cryptography, authentication, and authorization, along with general application security requirements
• Knowledge of at least one object-oriented programming language, such as Node.js or TypeScript
• Experience implementing and operating security technologies and processes within a hybrid cloud environment, particularly AWS
• Expertise in OWASP concepts and their practical application across varied solutions
• Understanding of IT operations and service support processes
• Excellent communication skills, with the ability to translate technical security concepts for non-technical stakeholders
• English proficiency at B2 level or higher

Nice to have

• Relevant security certifications, such as CISSP, GIAC, CEH, Security+, or CSSLP
• Prior experience working within a fast-paced, product-led, or e-commerce technology environment
• Familiarity with automated security scanning and CI/CD pipeline integration