Senior Security Infrastructure Engineer

Elliot Partnership; New York (NY); Hybrid; USD 120,000 - 180,000; Full time

Job summary

An innovative firm is seeking a Senior Security Infrastructure Engineer to design and enhance its global security framework. This role offers the chance to work on complex security challenges in a collaborative environment, focusing on securing large-scale infrastructures and optimizing authentication systems. You will be part of a dynamic team, driving best practices in security while working with cutting-edge technologies. If you have a passion for security engineering and want to make a significant impact in a high-performance setting, this opportunity is for you.

Qualifications

• 15+ years of experience in security-focused systems engineering.
• Deep knowledge of Linux OS and configuration management.

Responsibilities

• Design and implement secure authentication and security services.
• Enhance security policies and controls across various environments.

Skills

Security-focused systems engineering

Linux security expertise

Secure authentication systems design

Python programming

Networking knowledge

Strong communication skills

Education

Degree in Computer Science or related field

Tools

Kerberos

X.509 PKI

OAuth/OpenID Connect

Configuration management tools

Job description

Senior Security Infrastructure Engineer for a leading Quant Firm

Location: Hybrid working in New York

Compensation: 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:

1. Security & Authentication Systems – Design and implement secure authentication and security services, including Kerberos, X.509 PKI, and OAuth/OpenID Connect.
2. Infrastructure Security & Integration – Ensure the seamless integration and support of new Linux OS distributions within a complex infrastructure environment.
3. Security Framework Development – Continuously enhance security policies and controls across datacenters, cloud environments, and global offices.
4. Advanced Troubleshooting – Diagnose and resolve security and infrastructure issues using host- and network-level diagnostic/tracing tools.

Who you are:

1. Highly Experienced & Technical – 15+ years of security-focused systems engineering experience. A degree in computer science or a related field is preferred.
2. Linux Security Expert – Deep knowledge of Linux operating systems and configuration management tools.
3. Authentication & Security Specialist – Proven experience designing secure, scalable authentication systems.
4. Programming Proficiency – Strong Python development skills, with experience in Rust, Java, C, Go, or C# being a plus.
5. Networking & Infrastructure Knowledge – Familiarity with DNS, DHCP, network protocols, databases, and large-scale storage.
6. Strong Communicator & Collaborator – Comfortable working across global teams and departments to drive security best practices.

Why join us?

1. Work on cutting-edge security challenges in a large-scale, high-performance environment.
2. Collaborate with top engineers to enhance security infrastructure for a global organization.
3. 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!