Application Security Engineer

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Requirements

  • Pragmatism: You understand the difference between partnering with Engineering and security being a blocker of progress
  • Communication: You can translate a complex vulnerability into a business risk for a Product Manager and a technical fix for an Engineer
  • AppSec Subject Matter Expertise: You have a strong understanding of critical security risks in applications, are able to identify them in code, and provide recommendations of how to remediate
  • Cloud Native: Strong experience securing AWS/GCP environments and containerised workloads
  • AI ready: You understand the unique risks of AI and have experience securing AI-driven workflows

What the job involves

  • As our Cyber Security Engineer, you will be the bridge between Security and Engineering. You aren't here to block deployments; you’re here to ensure our code is resilient by design. You will empower our developers to ship fast without breaking the trust of our customers or regulators
  • Secure the Pipeline: Integrate and automate SAST, DAST, and SCA tooling directly into our CI/CD pipelines to catch vulnerabilities before they reach production
  • Harden the Product: Act as a Subject Matter Expert (SME) assisting engineers with the remediation of security vulnerabilities and bugs
  • Safeguard AI: Design and implement security guardrails for AI-assisted development and LLM integrations, ensuring data privacy and preventing prompt injection or model leakage
  • Threat Modelling: Partner with Product and Engineering teams to conduct threat modelling sessions for new features before they are built
  • Security Architecture: Act as a consultant for infrastructure and application design, ensuring our AWS/GCP Kubernetes environments remain hardened
  • Security Culture: Cultivate a Secure Development guild to level up our developers' secure coding skills

Tech Stack

  • Backend
    • Kotlin 1.7.20
    • AWS
    • GraphQL (it would be nice if you were familiar with this but it’s not a deal breaker)
    • Postgres
    • RabbitMQ
    • Docker
    • Kubernetes
  • Frontend
    • React & React Native, TypeScript, MobX, Redux, Stylus and SASS
  • Other
    • We build our Kotlin projects using Gradle and GitHub Actions, deploying to production as soon as we finish a feature
    • We use JUnit Jupiter, Kotest and TestContainers for automated testing

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Company: Deepstreamtech
Apply for the Application Security Engineer
Location: London
Job Description:

Requirements

  • Pragmatism: You understand the difference between partnering with Engineering and security being a blocker of progress
  • Communication: You can translate a complex vulnerability into a business risk for a Product Manager and a technical fix for an Engineer
  • AppSec Subject Matter Expertise: You have a strong understanding of critical security risks in applications, are able to identify them in code, and provide recommendations of how to remediate
  • Cloud Native: Strong experience securing AWS/GCP environments and containerised workloads
  • AI ready: You understand the unique risks of AI and have experience securing AI-driven workflows

What the job involves

  • As our Cyber Security Engineer, you will be the bridge between Security and Engineering. You aren’t here to block deployments; you’re here to ensure our code is resilient by design. You will empower our developers to ship fast without breaking the trust of our customers or regulators
  • Secure the Pipeline: Integrate and automate SAST, DAST, and SCA tooling directly into our CI/CD pipelines to catch vulnerabilities before they reach production
  • Harden the Product: Act as a Subject Matter Expert (SME) assisting engineers with the remediation of security vulnerabilities and bugs
  • Safeguard AI: Design and implement security guardrails for AI-assisted development and LLM integrations, ensuring data privacy and preventing prompt injection or model leakage
  • Threat Modelling: Partner with Product and Engineering teams to conduct threat modelling sessions for new features before they are built
  • Security Architecture: Act as a consultant for infrastructure and application design, ensuring our AWS/GCP Kubernetes environments remain hardened
  • Security Culture: Cultivate a Secure Development guild to level up our developers’ secure coding skills

Tech Stack

  • Backend
    • Kotlin 1.7.20
    • AWS
    • GraphQL (it would be nice if you were familiar with this but it’s not a deal breaker)
    • Postgres
    • RabbitMQ
    • Docker
    • Kubernetes
  • Frontend
    • React & React Native, TypeScript, MobX, Redux, Stylus and SASS
  • Other
    • We build our Kotlin projects using Gradle and GitHub Actions, deploying to production as soon as we finish a feature
    • We use JUnit Jupiter, Kotest and TestContainers for automated testing

#J-18808-Ljbffr…

Posted: May 20th, 2026