Market Connectivity Developer - Trading

We are seeking a candidate with strong experience in financial markets technology to join our Market Connectivity team. This global team is responsible for developing and maintaining front-office trading solutions, collaborating with brokers, exchanges, ECNs, and third-party platforms across all asset classes and regions.

Principal Responsibilities In this role, the candidates primary focus will be ensuring seamless integration of third-party trading systems with the Millennium eco-system. Other projects will involve building connectivity with brokers, exchanges and alternative trading venues.

Qualifications / Skills Required

• 5+ years of Java development experience, including multithreaded systems.
• 3+ years of experience in a financial institution or capital markets environment.
• Strong experience with the FIX protocol, including FIX 4.2 to FIX 5.0.
• Experience with C++ development.
• Extensive Linux development experience.
• Strong understanding of object-oriented programming.
• Working knowledge of networking protocols, including TCP/IP, UDP, and multicast.
• Strong understanding of market structure across equities, futures, options, and FX.
• Experience using AI coding assistants and engineering tools to support code generation, refactoring, documentation, debugging, and developer productivity.
• Experience developing and maintaining automated test frameworks for unit, integration, regression, performance, latency, and protocol conformance testing.
• Ability to apply AI tools for test case generation, log analysis, anomaly detection, root cause analysis, and production incident review.
• Ability to troubleshoot production issues in a Level 3 support environment.
• Excellent written and verbal communication skills.
• Bachelor’s degree in Computer Science or a related field.
• Knowledge of binary trading protocols.

The estimated base salary range for this position is $160,000 to $250,000, which is specific to New York and may change in the future. Millennium pays a total compensation package which includes a base salary, discretionary performance bonus, and a comprehensive benefits package. When finalizing an offer, we take into consideration an individual’s experience level and the qualifications they bring to the role to formulate a competitive total compensation package.