Senior Application Security Engineer

JR United Kingdom; Cardiff; Remote; GBP 60,000 - 90,000; Full time

Job summary

Une entreprise de logiciels offre un poste de Senior Application Security Engineer à Cardiff. En tant qu'expert en sécurité des applications, vous intégrerez la sécurité dans le cycle de vie du développement logiciel, en menant des évaluations de sécurité, des tests de pénétration et l'automatisation de la sécurité. Ce rôle requiert une expertise en développement logiciel et une connaissance approfondie des environnements cloud, assurant ainsi la protection des systèmes distribués dans le monde numérique.

Qualifications

• Expérience pratique en développement logiciel, idéalement avec Python et TypeScript.
• Connaissances approfondies en sécurité des applications et systèmes.
• Compréhension des environnements cloud, des pipelines CI/CD et de la sécurité des conteneurs.

Responsibilities

• Intégrer la sécurité dans la plateforme depuis la source jusqu'à la production.
• Mener des modélisations de menaces et des revues de sécurité.
• Effectuer des tests de pénétration éthiques et des tests d'infrastructure.

Skills

Application Security Knowledge

Penetration Testing

Threat Modeling

Cloud Security

Container Security

API Security

Secure Coding Practices

Education

Background in Software Development

Job description

Social network you want to login/join with:

Senior Application Security Engineer, Cardiff

Client: Cloudsmith

Location: Cardiff, United Kingdom

Job Category: Other

EU work permit required: Yes

Job Views:

4

Posted:

31.05.2025

Expiry Date:

15.07.2025

Job Description:

Some people like building things. Others like breaking them. You? You love both and more importantly, you love stopping bad actors from breaking the things you helped build. If that sounds like your vibe, we’ve got a job you’ll want to see.

This job is with the software supply chain company - securing and powering how software gets delivered everywhere.

What you'll do:

• Embed security across the platform, from source to production.
• Architect security controls across distributed, cloud-native systems.
• Lead threat modeling and security reviews (and get people to enjoy them).
• Perform penetration testing services and infrastructure testing ethically.
• Extend security automation and monitoring with tools like CircleCI, GitHub Actions, DataDog, AWS Security Hub, etc.
• Harden everything from container runtimes to APIs to artifact pipelines.
• Write secure code, review other people’s code, and help everyone improve their secure coding practices.
• Build tools, automate repetitive tasks, and occasionally create proof of concept exploits for testing.

You need:

• A background in software development. You’re fundamentally a software engineer. Experience with Python and some TypeScript is a plus.
• Deep application security knowledge.
• Hands-on experience with SAST, DAST, RASP, and securing cloud environments (preferably AWS).
• Strong understanding of container security, API security, Infrastructure as Code (IaC), and CI/CD pipelines.
• Experience with penetration testing, threat modeling, and developing security tools.
• Bonus points for experience securing artifact systems or supply chains.
• Additional bonus for experience with Firecracker, gVisor, or security assessment tools like SCA and data enclaves.
• You believe security should enable, not block, engineering.
• You are diplomatic and can collaborate effectively with engineering teams to secure the SDLC without causing friction.

This position is remote but must be based in the Island of Ireland or the UK. Remote work from other countries is not permitted.

Work permit sponsorship is not available for this role.