Security Software Engineer (IAM & Application Security)

Security Software Engineer (IAM & Application Security) Salary: $250k-350k Total compensation: ranging $400k-750k depending on performance and seniority A leading quantitative trading firm is hiring a Security Software Engineer to join a small, highly skilled Information Security team, with scope spanning Identity & Access Management (IAM) and Application Security across the firm's platform. As part of Information Security, you'll design, build, and deploy production-grade security solutions that directly support the firm's trading and transaction infrastructure, whilst partnering closely with business leaders across the firm to scope priorities and deliver tailored, business-critical solutions. The work spans owning features end to end - from architecture and development through testing, deployment, and automation - as well as driving incident response and root-cause resolution for systems already in production. What you'll do: Design, build, and deploy scalable security solutions across IAM and application security that support the firm's production platform Own features end to end, including enhancements to trade booking and transaction processing systems Drive security automation to reduce repetitive, manual work Own incident management: triage, root-cause analysis, and resolution Ensure the reliability, availability, and performance of systems shipped Partner directly with business leaders to scope priorities and deliver tailored solutions What we're looking for: 3+ years of professional experience in software engineering, with genuine exposure to security - ideally application security and/or IAM Strong coding skills in JavaScript, TypeScript, and Python A track record of shipping and operating production software end to end, not just prototypes Experience with security automation and vulnerability management Comfort owning incident response and reliability for systems built Working knowledge of Linux and Windows, plus exposure to endpoint/network security Familiarity with GCP Strong written and oral communication skills, confident engaging both engineers and business stakeholders This is a rare opportunity to work at the intersection of security engineering and the trading floor, with direct visibility into how your work protects and enables business outcomes at a leading quant trading firm.