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Software Developer | Core Order Management System | C++ | Experienced Hire

Susquehanna International Group, LLP, Chicago, Illinois

Posted pay

Pay not posted

Location: Chicago, Illinois
Work type: Onsite
Level: Not given
Skills in the job text: C++
Posted: Aug 10, 2026
Last check: 5 days ago
Job type: Software engineering

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Susquehanna International Group, LLP

About Susquehanna International Group, LLP: funding, hiring and pay

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Overview

Overview Susquehanna International Group is seeking a Software Engineer to join our newly formed Core OMS team. This team is building an electronic trading platform that powers order routing across global markets. As an early member of the team, you'll help shape the architecture and technical direction of a critical platform responsible for routing client orders to exchanges around the world. You'll solve challenging distributed systems problems involving performance, scalability, reliability, and connectivity while collaborating closely with traders, operations, and engineers across our U.S., European, and Asian offices.

We're looking for exceptional engineers at every career stage. If you're excited by difficult technical challenges and building high-performance distributed systems, we'd love to talk to you. Key Responsibilities Design, build, and evolve the distributed systems that power electronic order routing across global exchanges and trading venues. Develop resilient, high-performance connectivity to clients, brokers, exchanges, and internal trading systems.

Partner with colleagues across Susquehanna's U.S., Europe, and Asia offices to support global expansion and onboard new markets and trading relationships. Collaborate with traders, operations, developers, and external partners to investigate complex production issues and continuously improve platform reliability and performance. Contribute to architectural decisions, engineering standards, and the long-term technical direction of the platform.

Continuously improve the scalability, observability, and operational excellence of the platform. What we’re looking for We're looking for exceptional engineers who enjoy solving difficult systems problems. We hire for technical excellence, curiosity, and the ability to solve complex engineering problems. This role is a great fit if you're either: An outstanding early-career engineer with exceptional technical ability, deep proficiency in modern C++, and a passion for learning distributed systems.

An experienced engineer with hands-on experience designing and building high-performance, low-latency distributed systems, networking infrastructure, or other performance-critical software. You'll be successful in this role if you have: Deep proficiency in modern C++ and strong software engineering fundamentals. Strong understanding of data structures, algorithms, concurrency, and distributed systems concepts. Excellent analytical and debugging skills, with the ability to reason about complex software systems.

A passion for building scalable, reliable, high-performance software. Strong communication and collaboration skills—you enjoy working closely with engineers, traders, operations teams, and business stakeholders. Experience with distributed systems, electronic trading systems, exchange connectivity, FIX protocol, or financial markets is a strong preference. We're looking for engineers who are self-starters and enjoy tackling complex technical challenges.

About Susquehanna Susquehanna is a global quantitative trading firm powered by scientific rigor, curiosity, and innovation. Our culture is intellectually driven and highly collaborative, bringing together researchers, engineers, and traders to design and deploy impactful strategies in our systematic trading environment. To meet the unique challenges of global markets, Susquehanna applies machine learning and advanced quantitative research to vast datasets in order to uncover actionable insights and build effective strategies.

By uniting deep market expertise with cutting-edge technology, we excel in solving complex problems and pushing boundaries together.

Read the job posting on the Susquehanna International Group, LLP site

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About Susquehanna International Group, LLP: funding, hiring and pay