Full Stack Developer

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

Core to the health and growth of our business, Millennium’s Information Technology organization builds and supports the flexible, scalable technology and proprietary systems that power the firm’s global platform. Within this environment, the Fixed Income technology team partners closely with stakeholders across the business to deliver reliable, high-impact applications that support critical processes, streamline workflows, and enable continued innovation across the firm.

What You'll Do

• Architect, build, and support full-stack applications and platform components that power critical business processes across the firm.

• Partner with business analysts, product management, engineering teams, and senior stakeholders to turn business requirements into scalable technical solutions.

• Develop and enhance application components across the stack, including user interfaces, backend services, APIs, and reporting solutions.

• Design and deliver responsive, performant, and intuitive web experiences using modern UI technologies and sound UX practices.

• Build and integrate backend services and RESTful APIs with enterprise systems and data sources to enable seamless connectivity.

• Execute the full software development lifecycle, including design, development, testing, deployment, documentation, and ongoing enhancement.

• Apply strong engineering discipline through maintainable design patterns, unit testing, mock-based testing, and adherence to development standards.

• Troubleshoot and improve existing applications while contributing to continuous improvements across the application stack, architecture, and development practices.

What You Bring

• 8+ years of full-stack software development experience in enterprise environments.

• Strong backend engineering experience in Python or C#/.NET Core, with the flexibility to work effectively in language-diverse teams.

• Proven experience building modern UI applications with Angular, React, or comparable JavaScript frameworks.

• Strong experience designing, building, and consuming RESTful APIs and integrating distributed application services.

• Deep relational database expertise, including SQL Server and PostgreSQL, with strong SQL and stored procedure development skills.

• Solid understanding of object-oriented programming, design patterns, software architecture, and maintainable application design.

• Experience working with modern engineering tools and practices, including GitHub, Jenkins, JIRA, Agile delivery, DevOps, and SDLC methodologies.

• Strong communication, collaboration, and ownership skills, with the ability to work independently and manage multiple priorities effectively.