Senior Application Security Engineer

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

Job summary

A leading software supply chain company is seeking a Senior Application Security Engineer in Worcester. You'll be responsible for embedding security practices, performing penetration tests, and automating security processes. Ideal candidates will have a background in software development and strong application security knowledge. This role allows remote work within the UK and Ireland.

Qualifications

• Background in software development as a software engineer.
• Hands-on experience with SAST, DAST, RASP.
• Proficient in securing cloud environments (preferably AWS).

Responsibilities

• Embed security across the platform, from source to production.
• Perform penetration testing services and infrastructure testing ethically.
• Architect security controls across distributed, cloud-native systems.

Skills

Application security knowledge

Python proficiency

Threat modeling

Penetration testing

Cloud security

Container security

Collaboration with engineering teams

Job description

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Senior Application Security Engineer, Worcester

Client: Cloudsmith

Location: Worcester, United Kingdom

Job Category: Other

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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 others' code, and help everyone improve their secure coding skills.
• Build tools, automate repetitive tasks, and occasionally develop proof of concept exploits for fun.

You need:

• A background in software development. At your core, you’re a software engineer. Proficiency in Python and some TypeScript is beneficial.
• 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 pen testing, threat modeling, and developing security tools.
• Bonus: experience securing artifact systems or supply chains.
• Additional bonus: experience with Firecracker, gVisor, or advanced security tools like SCA and data enclaves.
• You believe security should enable, not block, engineering processes.
• You are diplomatic and capable of collaborating with engineering teams to secure the SDLC without causing disruption.

This job is remote within the Island of Ireland or in the UK. You must be physically located here; remote work from outside these areas is not permitted.

Work permit sponsorship is not available.