Software Engineer - Fixed Income Technology

Location: London, United Kingdom

Department: Information Technology

Software Engineer - Fixed Income Technology

About Millennium
Millennium is a global, diversified alternative investment firm, founded in 1989. Defined by evolution, innovation and focus, Millennium’s mission is to deliver results for our investors.

Our people are empowered with both independence and support: the autonomy to pursue ideas with conviction and the backing of a global network committed to collaboration, disciplined risk management and continuous learning. With opportunities to deepen expertise and accelerate development, talent at Millennium is equipped to adapt, evolve and build lasting impact over time. Discover how transformative growth accelerates impact.

Meet the Team
Millennium’s Information Technology team is core to the health and growth of the business. The firm’s active, multi-manager model depends on flexible, scalable technology and advanced proprietary systems, including the continued development of next-generation analytical and trading capabilities. Within this environment, the Fixed Income Technology team supports a platform focused on intraday risk, trade, and portfolio management, partnering closely with investment, business management, and risk functions in a fast-moving engineering environment.

What You'll Do
• Partner with portfolio managers, business management, and risk teams to design and deliver intraday risk, trade, and portfolio management solutions.
• Architect and develop enterprise-scale data ingestion and distribution frameworks.
• Work closely with project managers and senior leadership to gather analytical requirements, track delivery, and manage stakeholder expectations.
• Maintain, support, and continuously enhance existing platforms as business needs evolve.
• Build robust, scalable, production-grade distributed systems in a fast-paced environment.
• Deliver timely, high-impact solutions for portfolio and risk management users across the firm.
• Collaborate effectively with technical and business stakeholders to translate needs into practical outcomes.
• Contribute to a high-performance engineering culture with a hands-on, solutions-oriented approach.

What You Bring
• Up to 4 years of backend engineering experience, with proficiency in at least one enterprise-grade language such as Python, Java, or Rust.
• Strong software development experience building microservices-based systems in a production environment.
• Strong knowledge of object-oriented programming, distributed systems, and software design principles.
• Experience with AWS, GCP, or another public cloud platform.
• Bachelor’s or Master’s degree in Computer Science or another scientific or technical discipline.
• Strong analytical, problem-solving, and communication skills, with the ability to work independently in a fast-paced environment and collaborate across globally distributed teams.
• Highly organized, detail-oriented, and able to demonstrate strong ownership and accountability.