CareerPlan

Market Connectivity Developer – External Onboarding

New York, New York, United States of AmericaFull-time$100k–$175k2026-09-10 → 2026-10-21

Core

Lead onboarding of external trading teams and integrate third-party trading systems into the Millennium ecosystem.

Role type

Senior IC market connectivity developer

Builds

Front-office trading solutions and market connectivity integrations

Domain

Financial services / Market infrastructure

Required skills

Java development, C++ development, FIX protocols, Linux development, TCP/IP/UDP networking, multithreaded application development, object-oriented programming

Preferred skills

Binary trading protocols

Responsibilities

Lead onboarding of external trading teams, Develop and maintain front-office market connectivity solutions, Partner with brokers and exchanges to support integration, Troubleshoot complex production issues for trading systems, Collaborate with global stakeholders for connectivity delivery

Seniority

Senior, hands-on IC