Senior Options Software Engineer

• 5+ years of working experience
• Experience working in C+
• Experience working with distributed systems
• Sound understanding of multi-threaded application design and development
• Passion for technology and software development
• Ambition to solve open-ended problems using analytical methods
• Ability to work independently and prioritize high-impact projects
• Strong communication and interpersonal skills applicable to a dynamic trading environment
• Bachelor’s degree (or equivalent experience) in Computer Science or related field

Miami, FL Full Time Posted by: Citadel Securities Posted: Wednesday, 3 June 2026

Options market making presents a unique challenge in combining scale with business complexity. With over a million of listed options at the heart of billions of messages, we handle internet-scale datasets while being constrained on hardware due to latency requirements necessitating exchange co-location. This forces us to both push the machines to their max as well as innovate in the space of algorithms and business.

In our mission to be the most successful investment team in the world, we hire the brightest minds in technology, research, and finance, and empower them to collaborate. Treating the problems as data-in, data-out technical challenges is not enough. To succeed, you need to be willing to master the options trading domain and translate this mastery into cutting edge software solutions, collapsing data cardinality where possible. Location

Miami Objectives

• Build, maintain and support one of the world’s most powerful trading platforms while continuously improving performance, functionality and stability of the system
• Design, develop, test, and deploy elegant software solutions across the firm
• Partner with business leaders to define priorities and deliver custom solutions
• Analyze complex business and technical problems
• Make sound decisions proactively and in a self-directed manner
• Provide timely systems support for trading activities