Job Description

• Senior Security Infrastructure Engineer for a leading Quant Firm

• Hybrid working in New York

• Highly competitive compensation package

Are you an experienced security-focused systems engineer looking to work on complex, large-scale infrastructure? A leading technology-driven firm is seeking a Senior Security Infrastructure Engineer to help design and enhance its global security framework. This role offers the opportunity to work in a high-impact, collaborative environment at the intersection of security, networking, and large-scale computing.

What you’ll be doing:

As part of the Platform Engineering team, you’ll be responsible for securing and optimizing the firm’s global infrastructure. Key responsibilities include:

• Security & Authentication Systems – Design and implement secure authentication and security services, including Kerberos, X.509 PKI, and OAuth/OpenID Connect.

• Infrastructure Security & Integration – Ensure the seamless integration and support of new Linux OS distributions within a complex infrastructure environment.

• Security Framework Development – Continuously enhance security policies and controls across datacenters, cloud environments, and global offices.

• Advanced Troubleshooting – Diagnose and resolve security and infrastructure issues using host- and network-level diagnostic/tracing tools.

Who you are:

• Highly Experienced & Technical – 15+ years of security-focused systems engineering experience. A degree in computer science or a related field is preferred.

• Linux Security Expert – Deep knowledge of Linux operating systems and configuration management tools.

• Authentication & Security Specialist – Proven experience designing secure, scalable authentication systems.

• Programming Proficiency – Strong Python development skills, with experience in Rust, Java, C, Go, or C# being a plus.

• Networking & Infrastructure Knowledge – Familiarity with DNS, DHCP, network protocols, databases, and large-scale storage.

• Strong Communicator & Collaborator – Comfortable working across global teams and departments to drive security best practices.

Why join us?

• Work on cutting-edge security challenges in a large-scale, high-performance environment.

• Collaborate with top engineers to enhance security infrastructure for a global organization.

• Lead high-impact projects in authentication, network security, and infrastructure protection.

If you’re passionate about security engineering, authentication systems, and large-scale infrastructure, we’d love to hear from you!