Security Engineer - AppSec/DevSecOps
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Senior Security Engineer – Application Security / DevSecOps
A high-growth FinTech is hiring a Senior Security Engineer to help build secure, scalable, user‑centric financial products. Security is a core part of the platform — not an add‑on — and you’ll play a leading role in engineering security into every stage of the SDLC.
You’ll design, automate, and deliver security capabilities that enable developers to ship secure software quickly and confidently. This is a hands‑on role focused on secure software engineering, AppSec, automation, and DevSecOps.
What You’ll Do
- Embed security into the end‑to‑end SDLC (design → build → deploy → production).
- Integrate and automate security tooling across CI/CD pipelines.
- Lead threat modelling, architecture reviews, and secure design decisions.
- Build internal tools, libraries, and guardrails that support secure‑by‑default development.
- Mentor engineers and uplift security engineering capability across teams.
- Partner with product, platform, and engineering teams to solve real‑world security challenges.
- 5+ years in Security Engineering, Application Security, or Product Security.
- Strong software engineering skills: Python, Go, or TypeScript.
- Experience securing modern web, mobile, and API architectures at scale.
- Hands‑on exposure to SAST, DAST, IAST, SCA and automated security workflows.
- Solid understanding of OWASP Top 10, ASVS, MASVS, secure design patterns.
- Knowledge of OAuth2, OIDC, WebAuthn, and authentication/identity flows.
- Security engineering experience in FinTech, payments, or regulated environments.
- Delivered secure coding training or scaled developer‑focused security programmes.
- Familiarity with PCI‑DSS, PSD2, SCA, or other financial compliance frameworks.
What You’ll Get
- Huge impact securing products used by millions.
- Ownership in a modern, engineering‑led environment.
- Budget for certifications, conferences, and continuous learning.
- Clear progression to Staff/Principal Security Engineer.
If you’re passionate about building secure, scalable systems and driving DevSecOps excellence, we’d love to speak with you.
Seniority level
Mid‑Senior level
Employment type
Full‑time
Job function
Finance, Information Technology, and Engineering
Industries
Financial Services and Technology, Information and Media
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- Location:
- England, United Kingdom
- Salary:
- £100,000 - £125,000
- Job Type:
- FullTime
- Category:
- IT & Technology