Security Design Engineer (AppSec)

Edinburgh
3 days ago
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The Company

Superb opportunity to join a leading financial services client with offices in Edinburgh.

This is an initial 6-month contract inside IR35. There will be a requirement to be in the office up to 3-days per week.

The Role

We are seeking an experienced Security Design Engineer (AppSec) to lead end-to-end security solution design across complex technology environments. You will produce high-quality architecture and design artefacts aligned to business and security standards, influence strategic direction, and provide hands-on application security expertise across large-scale transformation programmes.

What you’ll do

  • Own and deliver secure solution designs, architecture patterns, design decisions, and risk assessments

  • Partner with enterprise and solution architects to ensure alignment with strategic architecture

  • Provide technical leadership and act as an AppSec subject matter expert for delivery teams

  • Design and embed security into modern application stacks and CI/CD pipelines

  • Present designs and recommendations to design authorities and senior stakeholders

  • Identify control gaps, define remediation plans, and manage residual risk

  • Support governance, peer review, and architectural assurance processes

    What you’ll bring

  • Deep application security experience across cloud-native, microservices, containerised and Kubernetes environments

  • Strong expertise in SAST, DAST, IAST, MAST, SCA, SBOMs, and supply-chain security

  • Proven experience integrating security testing into CI/CD (e.g. GitHub Actions, GitLab, Jenkins, Azure DevOps)

  • Threat modelling, secure SDLC design, and risk-based security policy development

  • Experience in vulnerability and exposure management and network security concepts (segmentation, logging, scanning)

  • Familiarity with industry frameworks (OWASP SAMM/ASVS, NIST SSDF, SLSA, CSA)

  • Ability to communicate complex security concepts to both technical and non-technical stakeholders

  • Experience working in large, complex IT transformation programmes

    Tools & technologies

  • AppSec tools such as Checkmarx, Invicti, Snyk, Black Duck, Tenable (or similar)

  • Architecture modelling (e.g. BizzDesign, Archi, UML)

  • Jira and Confluence

    Qualifications (preferred)

  • Degree in cybersecurity, computer science, software engineering, or related field

  • CISSP, CISM, or equivalent cybersecurity certification

  • SABSA or TOGAF certification

    This is an opportunity to shape secure architecture at scale, influence senior stakeholders, and drive developer-centric security practices in a complex enterprise environment.

    More details available on successful application

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