Software Developer - Global Routing | Experienced Hire

Susquehanna International Group, LLP; Bala Cynwyd (PA); On-site; USD 100,000 - 150,000; Full time

Job summary

Susquehanna International Group, LLP is seeking a Software Developer for its Global Routing team. This role focuses on electronic trading connectivity infrastructure, supporting Susquehanna’s brokerage business worldwide.

The ideal candidate has over 5 years of software development experience in C#, Java, or C++, along with strong knowledge of the FIX protocol and order routing. Excellent communication skills are essential for collaborating with teams in the U.S., Europe, and Asia.

Qualifications

• 5+ years of software development experience in C#, Java, or C++.
• Deep knowledge of the FIX protocol, with hands-on experience implementing or supporting FIX connectivity.
• Experience with order routing in a global trading environment.
• Strong analytical skills to debug complex systems.
• Excellent communication skills.

Responsibilities

• Design, develop, and maintain systems for electronic order routing.
• Build and enhance FIX connectivity for clients and internal systems.
• Collaborate with teams to troubleshoot connectivity issues.
• Document systems and workflows clearly and thoroughly.

Skills

C#

Java

C++

FIX protocol

Analytical skills

Communication skills

Algorithmic trading

Low-latency systems

Job description

Overview

Susquehanna International Group is seeking a Software Developer to join our newly formed Global Routing team. This team owns the electronic trading connectivity infrastructure that powers Susquehanna’s client-facing brokerage business worldwide. You’ll work on high-impact systems that handle order flow across major global markets, collaborating closely with trading, operations, and technology teams in our U.S., European, and Asian offices.

Key Responsibilities

• Design, develop, and maintain systems that support electronic order routing across global markets and venues.
• Build and enhance FIX connectivity for clients, brokers, exchanges, and internal systems.
• Partner with business counterparts in Susquehanna’s Europe and Asia offices to support international expansion and onboard new trading relationships.
• Collaborate with traders, operations, developers, and external vendors to troubleshoot and resolve connectivity issues in a fast-paced environment.
• Contribute to architectural decisions and advocate for scalable, reliable system design.
• Document systems, workflows, and integration specifications clearly and thoroughly.

What we’re looking for

• 5+ years of software development experience in C#, Java, or C++.
• Deep knowledge of the FIX protocol, with hands‑on experience implementing or supporting FIX connectivity at a brokerage, trading firm, exchange, fintech, or OMS/EMS vendor.
• Experience with order routing in a multi-system, global trading environment.
• Strong analytical skills with the ability to debug complex, distributed systems.
• Excellent communication skills — you’re equally comfortable talking to a quant, a trader, or a client.
• Familiarity with financial models or algorithmic trading strategies.
• Experience with low‑latency or high‑throughput system design.
• Prior work with connectivity to global exchanges or dark pools.