Senior Software Engineer, Exchange

Underdog is a fast-growing sports company focused on building innovative products for sports fans. They are seeking a Senior Software Engineer to design, build, and scale the core exchange infrastructure for their prediction markets, ensuring high performance and reliability in their systems.

Responsibilities:

• Build and scale core exchange infrastructure - order matching, trade execution algorithms, and the data structures that underpin them
• Build APIs and data feeds that clients depend on - REST, FIX, WebSockets - and make them fast and reliable
• Design robust clearing infrastructure, position management, margining, and how money actually moves
• Drive technical relationships with our customers (market makers, traders, etc.)
• Hunt down performance bottlenecks - in databases, internal services, and anywhere latency is costing us
• Put systems under pressure before production does - rigorous testing of the things that can't go down
• Help invent what prediction market structure looks like beyond what exists today - new contract types, new mechanics, etc
• Move fast, make calls, and own the outcome - we give real autonomy, which means real accountability

Requirements:

• At least 5+ years of engineering experience, with a track record on high-performance, low-latency systems
• Strong command of highly performant programming languages (C, Rust, C++, Go, Java, or similar) and the willingness and desire to flex into others
• You are product minded and scope well, you make good tradeoffs, and don't need hand-holding
• Demonstrable experience thriving in fast-paced and ambiguous environments, where high-agency and ambition go hand-in-hand
• Experience in TradeFi, prediction markets, crypto exchange infrastructure or SOR
• Background in sports, fantasy, or gaming
• Proven experience building highly available, high-volume consumer-facing systems
• Deep understanding of concurrency, threading models, and the tradeoffs in performance-sensitive systems