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Senior Application Security Engineer, Basildon
Client: Cloudsmith
Location: Basildon, 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 practices.
* Build tools, automate repetitive tasks, and occasionally develop proof-of-concept exploits for testing purposes.
You need:
* A background in software development. You’re fundamentally a software engineer. Experience with Python is essential, and some knowledge of TypeScript is a plus.
* Deep knowledge of application security.
* 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 securing artifact systems or supply chains.
* Additional bonus if you’ve worked with Firecracker, gVisor, or security solutions like SCA and data enclaves.
* You believe security should enable, not block, engineering efforts.
* You have diplomatic skills to collaborate effectively with engineering teams to secure the Software Development Life Cycle (SDLC), without causing friction.
This job is remote but must be based on the Island of Ireland or in the UK. Remote work from other countries is not permitted.
Work permit sponsorship is not available.
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