Infrastructure Security Engineer (Chicago)

Infrastructure Security Engineer

We are looking for a passionate and pragmatic Infrastructure Security Engineer to join our Platform team. In this role, you'll help build and scale security controls across IMC's global infrastructure. You will be working closely with engineers responsible for Linux, Kubernetes, CI / CD, storage, and shared compute systems to ensure foundational security is deeply embedded in how we run and grow our platforms.

This role is ideal for someone who enjoys solving complex infrastructure problems through a security lens. You'll work hands-on to improve authentication, secrets management, and access controls while building the tooling and automation that make secure-by-default the easy path for engineering teams.

You'll be part of a small and fast-moving team within the Platform department, which operates IMC's internal developer platform and core infrastructure services. Your work will directly improve the auditability, integrity, and resilience of the systems that underpin our global trading environment.

Your Core Responsibilities :

• Improve authentication and secure identity propagation in critical systems using OIDC-OAuth2, LDAP, Kerberos protocols
• Manage and improve PKI and TLS certificate workflows, supporting secure service-to-service and user authentication across environments
• Design and implement authorization and secure access flows across our infrastructure and data technology stack
• Build automation around HashiCorp Vault for secrets lifecycle management, enabling integration into workflows and usage patterns
• Develop infrastructure-as-code and policy-as-code to deploy and enforce access and secret policies at scale
• Collaborate with Platform and Engineering teams to co-design secure default configurations and benchmarks
• Contribute to documentation, RFCs, and onboarding to promote safe adoption of new controls
• Participate in platform threat modeling and security control design reviews

Your Skills and Experience :

Please note that immigration sponsorship is not offered for this specific opening.

Salary Range : $160,000 - $220,000 USD

About Us

IMC is a global trading firm powered by a cutting-edge research environment and a world-class technology backbone. Since 1989, we've been a stabilizing force in financial markets, providing essential liquidity upon which market participants depend. Across our offices in the US, Europe, Asia Pacific, and India, our talented quant researchers, engineers, traders, and business operations professionals are united by our uniquely collaborative, high-performance culture, and our commitment to giving back. From entering dynamic new markets to embracing disruptive technologies, and from developing an innovative research environment to diversifying our trading strategies, we dare to continuously innovate and collaborate to succeed.