Senior Security Infrastructure Engineer

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! #J-18808-Ljbffr Elliot Partnership