Security Software Engineer (IAM & Application Security)

NJF Global Holdings Ltd; New York (NY); On-site; USD 400,000 - 750,000; Full time

Job summary

NJF Global Holdings Ltd is seeking a Security Software Engineer to join its Information Security team, focusing on IAM and Application Security across the firm's platform.

You will design, build, and deploy production-grade security solutions, own features end-to-end from architecture to deployment, and partner with business leaders to deliver tailored, business-critical safeguards for trading and transaction systems.

Qualifications

• 3+ years of professional software engineering experience with security focus.
• Experience shipping and operating production software end-to-end.
• Experience with security automation and vulnerability management.
• Comfort owning incident response and reliability for production systems.
• Proficiency with Linux and Windows; exposure to endpoint/network security.
• Familiarity with GCP and cloud security fundamentals.
• Strong written and spoken communication with engineers and stakeholders.

Responsibilities

• Design, build, and deploy scalable security solutions across IAM and application security.
• Own features end-to-end, including integration with trade booking and transaction processing.
• Drive security automation to reduce repetitive manual work.
• Own incident management: triage, root-cause analysis, and resolution.
• Ensure reliability, availability, and performance of systems shipped.
• Collaborate with business leaders to align priorities and deliver tailored security solutions.

Skills

Security engineering

IAM

Application security

Production software

Incident response

Linux/Windows

GCP

Communication skills

Job description

Security Software Engineer (IAM & Application Security)

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
• 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.