Objectives Candidates who have less than 3 years of experience should possess:
• Good knowledge of UNIX/Linux command line.
• Good understanding of the usage of TCP/IP and UDP networking in applications.
• Basic understanding of network routing and troubleshooting.
• Basic experience in writing SQL database queries.
• Basic experience in Bash, Python or other scripting language. Candidates with 3+ years of experiences should possess:
• First line support and root cause problem diagnosis within a real-time, distributed setting.
• Large-scale application and infrastructure capacity planning and deployment.
• Organizing application migrations and infrastructure upgrades. Behavioral Requirements
• Clear ability to collaborate with multiple colleagues and lead brainstorming and other live troubleshooting sessions.
• Good verbal communication skills with a self-driven, inquisitive attitude to problem-solving.
• Clear ability to manage multiple priorities and deadlines.
• Genuine curiosity in technology and staying abreast of current technology trends. Skills and Preferred Qualifications




• Trading desk support experience and knowledge of trading systems and applications.
• Intermediate-level Python development experience.
• Understanding of operating system performance tuning. Locations Sydney, Gurugram Opportunities may be available from time to time in any location in which the business is based for suitable candidates. If you are interested in a career with Citadel, please share your details and we will contact you if there is a vacancy available. About Citadel Securities Citadel Securities is a technology-driven, next-generation global market maker. We provide institutional and retail investors with world-class liquidity, competitive pricing and seamless front-to-back execution in a broad array of financial products. Our teams of engineers, traders and researchers harness leading-edge quantitative research and the accelerating power of compute, machine learning and AI to power our analytics and tackle the market’s and our clients’ most critical challenges. Together, we are forging the future of capital markets. For more information, visit citadelsecurities.com.

📌 Site Reliability Engineer (Sydney)
🏢 Citadel Securities
📍 Sydney