Core Infrastructure Engineer

Susquehanna International Group (SIG) is seeking talented engineers to join our Core Infrastructure team, which maintains access to some of the most critical authentication systems at SIG. You’ll work closely with other groups to ensure that teams have access to the services they need without risking impact to our core systems.

In this role, you will:

• Work on a global scale. One of the most challenging but rewarding aspects of working on the team is the global nature of their responsibilities. They deploy and manage systems at all the firm's locations and data centers across the globe.
• Become an early adopter of new technologies. We are always focused on exploring new technology and thinking ahead to ensure that our infrastructure is ready for any needs that arise within the environment.
• Have opportunities to focus on all aspects of administration and engineering. You will encompass the entire lifecycle of our infrastructure service deployments.  Your responsibilities will include designing new solutions, system builds, management of Active Directory, DNS, DHCP, PKI, Hyper-V, Azure, ADFS, time synchronization, etc.

What you can expect from us:

Real Impact: You’ll be designing and optimizing systems that process massive amounts of data, ensuring high performance and stability. You’ll see how your contributions towards developing and supporting leading-edge hardware and software solutions make a firm-wide impact that makes us all smarter, faster, and better.

Collaboration: Our systems engineers, network architects, technical analysts and software developers work together to create competitive edge through best-in-class technical solutions.

Growth: For many of our roles, we don’t expect you to have prior industry experience in proprietary trading or financial services to succeed at Susquehanna International Group. We’re looking for people who are naturally curious, relentless problem solvers, and have the desire to continuously innovate, learn, and grow.

Benefits: SIG offers a wide array of competitive employee perks & benefits such as: an onsite wellness center staffed with a full-time Nurse Practitioner, a 9,000 square-foot gym, food & beverages available all day, onsite services such as dry cleaning & laundry, and auto repair & detailing. 

• 4+ years of Windows Server systems administration experience, preferably with infrastructure services.
• Experience in protocols such as LDAP, Kerberos, DNS, DFS, Virtualization - Hyper-V Role or VMWare, Certificate Services, DHCP, SSO Federation (SAML, OAUTH), SCIM, Group Policy, Entra ID, Windows Time, NTP
• Scripting experience (PowerShell or other languages)
• Exposure to Azure Cloud, and/or Amazon Cloud
• Storage Concepts (i.e. RAID, Storage Spaces Direct)
• Basic Networking concepts and skills (TCP/IP)
• Focus on securing systems
• Excellent problem solving skills
• Able to participate in an on-call rotation 10 weeks per year

About SIG

SIG is a global quantitative trading firm founded by a group of friends who share a passion for game theory and probabilistic thinking. We have incorporated this approach into our culture, where you will find relentless problem solvers within each of our core disciplines: Trading, Technology, and Quantitative Research. From offices around the world, our employees collaborate to make optimal decisions and are driven by the desire to achieve winning results together. 

What we do

We are experts in trading essentially all listed financial products and asset classes, with a focus on derivatives trading. Through market making and market taking, we handle millions of trading transactions around the world every day, providing liquidity and ensuring competitive prices for buyers and sellers. While our presence in the market is broad, our trading desks are highly specialized, allowing for a deep understanding of unique drivers of each asset class.

SIG does not accept unsolicited resumes from recruiters or search firms. Any resume or referral submitted in the absence of a signed agreement will become the property of SIG and no fee will be paid.