Information Security Developer/ Tester

Euroclear; United Kingdom; On-site; GBP 50,000 - 70,000; Full time

Job summary

A leading financial services firm in the UK is seeking a Security Developer/Tester to enhance security in the development lifecycle. The role involves conducting security analysis, guiding teams on secure coding, and improving software quality through modern methodologies. Ideal candidates should have over 5 years in IT, experience in security testing, and familiarity with Agile practices. This position offers an inclusive work environment and the opportunity to contribute to scalable security solutions.

Qualifications

• 5+ years in IT, specializing in security testing or secure software development.
• Hands-on experience with .NET, Java, Python, or C#.
• Familiarity with Agile and DevSecOps principles.

Responsibilities

• Conduct operational security analysis and translate code findings.
• Guide development teams through secure coding practices.
• Analyze source code, identify vulnerabilities, and support agile workflows.

Skills

Secure software development

Security testing

Effective communication

Agile methodologies

Tools

.NET

Java

Python

C#

Job description

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We are looking for a Security Developer/Tester who brings both technical expertise and a collaborative mindset to enhance the security posture of our development lifecycle. This role focuses on translating technical findings into actionable improvements in an inclusive, agile environment. We value individuals who approach challenges with curiosity, communicate effectively with diverse teams, and help create secure, scalable solutions for everyone.

Offensive Security - CISO Division

We are looking for a Security Developer/Tester who brings both technical expertise and a collaborative mindset to enhance the security posture of our development lifecycle. This role focuses on translating technical findings into actionable improvements in an inclusive, agile environment. We value individuals who approach challenges with curiosity, communicate effectively with diverse teams, and help create secure, scalable solutions for everyone.

What You’ll Do

1. Conduct operational security analysis and translate code findings into valuable insights for internal and external collaborators
2. Guide development teams through secure coding practices and support them with expert-level advice on threat mitigation
3. Leverage a variety of modern tools and methodologies to analyze source code, identify vulnerabilities, and support agile development workflows
4. Promote inclusive, continuous feedback loops to improve service outcomes and application security across domains
5. Support integration of DevSecOps practices to ensure security is embedded throughout the software development lifecycle
6. Collaborate across teams to improve container-based and cloud-native applications with a security-first approach

Technical Skills

We welcome applicants with different learning journeys and encourage those with the following experience to apply:

1. 5+ years in the IT industry, including experience in security testing or secure software development
2. Hands-on development experience in .NET, Java, Python, or C#
3. Familiarity with Agile and DevSecOps principles, and the ability to improve code quality and security through automated testing
4. Knowledge of secure coding frameworks, software composition analysis, and threat modelling
5. Ability to work across diverse technology stacks and with cross-functional teams to build inclusive and secure digital services
6. Experience with end-to-end application security, including vulnerability management and remediation

Soft Skills & Inclusive Competencies

We value people skills just as highly as technical ones. Successful candidates are:

1. Effective communicators who build trusting, respectful relationships across cultures and disciplines
2. Open-minded collaborators who listen actively and adapt to evolving team dynamics
3. Purpose-driven individuals who embrace change, promote innovation, and help reduce complexity
4. Focused professionals who are attentive to detail, accountable, and resilient in high-paced environments
5. Team players who support others in achieving goals while also advocating for accessible, secure solutions

Additional Attributes

• Experience with Software Development Life Cycle (SDLC) practices
• Knowledge of security certifications (e.g., CEH, GPEN, CISSP), or a willingness to pursue them
• Comfort with automating testing and security analysis
• Proficiency with Agile methodologies and collaboration tools
• Experience using tools like Word, Excel, Access for documentation and reporting

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