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Static analysis, dynamic testing, software composition, IaC scanning, and CI/CD pipeline integration specialists.
Application Security (AppSec) and DevSecOps Engineers integrate security into the engineering pipeline rather than imposing it from outside. The role exists because security tooling that does not fit engineering velocity gets bypassed — and once bypassed, provides false assurance worse than no tooling at all. Engineers in this role need genuine engineering-side fluency: comfort with CI/CD pipelines, container orchestration, infrastructure-as-code, and the developer experience considerations that determine whether security tooling actually gets used.
The work splits across several recurring rhythms. Pipeline integration is project-based — adding new tooling categories (SAST, SCA, DAST, IaC scan, secrets detection) to existing CI/CD pipelines, designing the policy framework that determines which findings break the build versus which produce warnings, and tuning the tooling to acceptable false-positive rates before rolling out widely. Code review is steady-state — participating in pull-request reviews when security-sensitive code changes, providing security context to engineering teams during architecture discussions, and triaging the steady flow of vulnerability findings from automated scanners. Threat modelling runs at architecture-decision points — formal threat modelling sessions for new applications, informal threat modelling for significant feature additions, and the maintenance of threat model documentation as systems evolve. Vulnerability triage is continuous — the steady volume of CVE findings against deployed dependencies, the prioritisation logic that determines what gets remediated when, and the coordination with engineering teams to ship fixes.
SAST + secrets detection in the editor; immediate feedback to developers as they write code.
Lightweight scans on commit; secret scans, IaC misconfig checks, dependency policy gates.
Full SAST, SCA, container, and IaC scans; policy gates for high-severity findings.
DAST, runtime protection, vulnerability monitoring; closes the loop back to backlog.
The AppSec and DevSecOps tooling landscape is broad but maps cleanly to functional categories. Our bench tracks the dominant platforms in each category:
| Capability | Function | Dominant platforms | Pipeline placement |
|---|---|---|---|
| SAST | Static code analysis | Snyk Code, Veracode, Checkmarx, Semgrep | IDE + CI |
| SCA | Open-source dependency scan | Snyk Open Source, Black Duck, Mend, Sonatype | CI + production monitoring |
| DAST | Dynamic web app scan | Burp, ZAP, Invicti, Veracode DAST | Pre-prod + scheduled production |
| IaC | Infrastructure-as-code scan | Checkov, tfsec, Snyk IaC, Wiz Code | CI + pre-deploy gate |
| Secrets | Credential leak detection | GitGuardian, TruffleHog, Snyk Secrets | Pre-commit + CI |
| Container | Image + runtime scanning | Snyk Container, Trivy, Aqua, Sysdig | CI + runtime |
The software supply chain has emerged as a distinct AppSec / DevSecOps sub-discipline since 2021, driven by high-profile supply-chain attacks (SolarWinds, log4shell, ua-parser-js, xz-utils, and ongoing examples) and the regulatory response (Executive Order 14028, NIST SP 800-218 SSDF, the EU CRA). Engineers specialised in software supply-chain security cover SBOM (Software Bill of Materials) generation and consumption, in-toto and SLSA framework implementation, image signing and verification (Cosign, Sigstore), and the broader question of how to verify that the software you ship is actually what you intended to ship. Our supply-chain bench is smaller than our generalist AppSec / DevSecOps bench but is growing rapidly as enterprise demand expands.
We staff AppSec and DevSecOps engineers across contract, direct hire, and embedded engagement models. The dominant engagement shape is nine-to-fifteen-month embedded contract for SDLC integration programmes — typically with a senior architect-engineer leading and two-to-three configuration engineers handling tool deployment and pipeline integration. Direct hire is more common for senior AppSec leadership roles where the client wants permanent ownership of the security architecture for engineering.
For organisations building or expanding an AppSec function, we often staff a mixed-seniority team — one senior engineer with multi-tool experience, two-to-three mid-level engineers each owning specific tooling categories, and a part-time threat modelling specialist for architecture engagements. Our IAM Architect placement page covers identity-side specialisations that pair with API security and workload identity work that often falls within DevSecOps scope.
The most reliable predictor of AppSec / DevSecOps engineer effectiveness is engineering-side fluency — the genuine ability to read code, design CI/CD pipelines, write Terraform, navigate Kubernetes, and engage with engineering teams as a peer rather than an external auditor. Engineers who came from a software development or platform engineering background and specialised into security typically outperform engineers who came from a security background and tried to learn engineering. Our screening explicitly weights this through code review exercises and pipeline integration challenges, because the gap is observable within the first hour of a real engagement.