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Prolific

Senior Application Security Engineer

Prolific

Senior Application Security Engineer securing Prolific's applications end-to-end. Collaborating with engineers to identify vulnerabilities and build security tooling.

Posted 4/27/2026full-timeRemote • 🇬🇧 United KingdomSeniorWebsite

Tech Stack

Tools & technologies
DjangoPython

About the role

Key responsibilities & impact
  • You'll be the technical authority on application security at Prolific
  • Work hands-on with our engineering teams to find and fix vulnerabilities in our codebase
  • Perform security testing, build security tooling, and embed secure development practices into how we ship software
  • Review pull requests, threat modelling new features, and building the automation that keeps our platform secure as we scale
  • Report to the Head of Engineering/Platform and work cross-functionally with product engineering, platform, data, and TechOps teams

Requirements

What you’ll need
  • Several years in application/product security or security engineering
  • Strong knowledge of OWASP Top 10 (Web & API) and modern attack paths (e.g. auth flaws, SSRF, injection, business logic abuse, supply chain)
  • Experience working with complex, large-scale systems and modern architectures
  • Hands-on security testing experience (especially Burp Suite) across web apps and APIs
  • Python for security tooling, automation, or custom detection (Django a plus)
  • Experience implementing and tuning SAST, SCA, DAST, and secret scanning in CI/CD
  • Practical threat modelling experience, including leading lightweight sessions
  • Strong collaboration skills, able to clearly explain issues and drive remediation
  • Builder mindset, you automate wherever possible

Benefits

Comp & perks
  • Competitive salary
  • Remote working
  • Opportunities for groundbreaking research

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools
application securitysecurity engineeringsecurity testingthreat modellingSASTSCADASTsecret scanningPythonBurp Suite
Soft Skills
collaborationcommunicationproblem-solvingautomation mindset