Linux Systems Engineer - Security

New York, New York, United States

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The mission of Two Sigma is to find value in the world's data. At our core we are a technology business. We use vast data sets from over a thousand diverse sources, advanced machine learning techniques, and scientific approaches to find critical connections that help drive the world's economy, safeguard the retirement savings of millions of people, and fund groundbreaking research.

At Two Sigma we fully embrace our "Nice Geeks" culture. Our facilities are designed to encourage people to come together and share ideas. Our personnel are rewarded for cross group collaboration and driving innovation. We also embrace fun and encourage play because we know giving our brains activity outside of our core jobs helps us be more creative and gain new insights that are relevant to our daily tasks.


Because we are looking for radical, novel, unique, inspiring, and innovative solutions, we place a high premium on diversity. We need people who see the world from angles we don't, so we can ensure that our solutions are the best possible, for the greatest number of people possible. We also know that embracing diversity of all kinds leads to inspiration, which leads to innovation, which allows us to change the world. If you are passionate, and interested in joining us on this adventure, we would love to meet you.

The Two Sigma Security team is focused on pushing the boundaries of what is possible when we reevaluate traditional assumptions and embrace modern technology. Whether we are unlocking the potential of quantitative analysis, pushing the limits of zero trust, driving cloud infrastructure to new heights, or developing our own solutions to common authentication and authorization challenges, we embody a culture of proactive and transparent innovation.


The Security Infrastructure Engineer will report to the manager for Security Infrastructure and work hand-in-hand with other members of the team, additional teams within Security, and will partner with a number of engineering teams across the firm. Our work is fluid and dynamic, and on any given day this role could be engaged in any of the following tasks:


  • Automating infrastructure tasks using Ansible and deploying configuration changes across our fleet of servers

  • Identifying and grooming a new data source to feed into our event collection platform using Stackdriver and GCP

  • Developing a metric for an impactful key result that can be measured and visualized on a dashboard

  • Designing and implementing a new security solution that improves the overall risk posture of Two Sigma

The Security Infrastructure team partners closely with our stakeholders through the design, development and implementation of initiatives that span various security platforms, as well as their operation, in order to provide a reliable and scalable backbone of core services for Two Sigma.  

Success for this role will be defined through demonstrated ownership of technology areas and tools, contributions to the Security Infrastructure team’s knowledge, tooling, products, and documentation. This role will entail designing secure infrastructure, establishing and following best practices for DevOps style operations, and ensuring the needs of our partners and customers are met.


Requirements to apply for the role:


  • 3+ year(s) of experience automating Unix systems management:

    • Fluent Bash scripting

    • Fluency in at least one high level scripting language (Python (preferred), perl)

    • DNS, networking

  • 3+ years of experience with configuration management tooling (Ansible, Chef, etc)

  • 3+ years of experience managing and troubleshooting at least one hypervisor platform (Xen, KVM, etc)

  • Familiarity with Kerberos concepts and troubleshooting

    • Cross-realm trust

    • Protocols

    • Client, server and KDC configuration

  • Familiarity with RADIUS concepts and troubleshooting