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Software Engineer (Python) - Cap Arb Portfolio Manager Tools

Millennium Management

Millennium Management

Software Engineering
Miami, FL, USA
Posted on Thursday, October 26, 2023
Back End Engineer - Cap Arb Portfolio Manager Tools

Millennium, a leading investment firm, is seeking an experienced and dynamic Back End Engineer to join a new team working on pioneering projects in Capital Structure Arbitrage (Cap Arb). This role lies at the intersection of sophisticated technology and innovative investment strategies, designed to support some of the most talented Portfolio Managers in the world.

About the Team

Our team is a vital force in bridging the divide between equities and fixed income at Millennium. We focus on two primary areas:

  • Platform Development: We’re building a python-based platform that integrates datasets, analytics/pricing systems, and technology platforms across the firm. You'll be shaping a new system to standardize market data; to link diverse securities, derivatives and entities; to power research, exploration and backtesting workflows; and to build valuable and delightful front office apps and tools.

  • Rapid Application Development: You'll be part of an elite squad responsible for deploying the platform to PMs and for building robust front office tools and systems to support PMs in trading, risk management, opportunity screening, technical/systematic analysis, and research.


This is a heavy hands-on engineering role, and you will be expected to:

  • Design, build and maintain beautiful, robust and high-performance APIs and services

  • Ensure that our system is extensible, scalable, reliable and meets agreed-upon SLAs for both external users (PMs) and internal users (your teammates)

  • Craft code that meets an exceptional standard for maintainability, readability and best practices

  • Recognize technical debt, and propose and implement solutions on your own

  • Advocate for improvements to product quality and performance


  • 7+ years of experience as a back-end or full-stack engineer, ideally on a front-office team at a hedge fund, focused on scalability, reliability and API design

  • 4+ years of experience with Python or an aptitude for learning new languages and frameworks

  • Familiarity with equity and fixed income products, especially basic pricing & analytics

  • Demonstrated experience with building a product and rapidly iterating based on user feedback

  • Proficiency & thoughtfulness around API design, testability/readability and system architecture

  • Proven ability to work in a fast-paced development environment and deliver timely results

  • Demonstrated use of data-driven approaches to experiment, measure success and iterate

  • Ability to navigate complex technical and product-related issues

  • Proactive, effective communication and a bias towards action


As an integral part of our team, you will:

  • Enjoy the freedom to move fast, act autonomously, and make your mark on the firm

  • Expand your understanding of complex, cross-asset investment strategies

  • Work with some of the most technically sophisticated investors on the Street

  • Build alongside top-tier software engineers in a dynamic environment

Our Culture

We have a culture of fast execution with enterprise-level quality. We are high energy, driven, and not afraid of failure. Every member brings their A+ game and leaves a positive impact on our stakeholders, which span many departments across the firm. We value:

  • Extreme accountability: You own your role and the impact you make

  • Respect for different ideas: We will disagree and that’s great, but we respect the disagreement and embrace the process

  • Bold pursuit: We don’t hesitate in the face of potential mistakes. If you're confident in the impact, take action

  • Vibrant engineering culture: We champion an energetic, dynamic engineering atmosphere that thrives on continuous upskilling, creative teamwork, and pursuit of innovation

At Millennium, we're doing things differently. Come be a part of a team that's building out new platforms, unearthing innovative solutions, and pushing the bounds of what's possible.