Senior UI Developer

Founded in 1989, Millennium is a global alternative investment management firm. Millennium seeks to pursue a diverse array of investment strategies across industry sectors, asset classes and geographies. The firm’s primary investment areas are Fundamental Equity, Equity Arbitrage, Fixed Income, Commodities and Quantitative Strategies. We solve hard and interesting problems at the intersection of computer science, finance, and mathematics. We are focused on innovating and rapidly applying innovations to real world scenarios. This enables engineers to work on interesting problems, learn quickly and have deep impact to the firm and the business.

At Millennium, we are redefining how investment decisions are made. We don't just look at balance sheets; we harness the chaos of the real world. By analyzing vast amounts of unstructured data—from news briefings and earnings call audio to regulatory documents—we provide our Portfolio Managers (PMs) with the "informational edge" (Alpha) they need to outperform the market.

We're looking for an experienced, Senior UI Developer who can build the next generation knowledge discovery experience that will be used by business and investment teams to discover knowledge and insights stuck in complex financial documents, audio and video. This person will play a key role in enabling a rich experience on top of a vast repository of knowledge leveraging genAI driven enrichments and other advanced AI and RAG techniques.

You'll transform complex data and business requirements into intuitive, performant user interfaces, collaborate closely with data science and engineering teams, and own projects from start to finish—including scoping, deployment, and monitoring.

Responsibilities:

• Own outcomes: break projects into milestones, estimate realistically, meet deadlines, and surface risks early with options.

• Build and deploy UI applications: develop reusable UI components and features, design intuitive user experiences, evaluate performance rigorously, and contribute to production-grade frontend architectures.

• Work the full development lifecycle: translate wireframes and requirements into working code, implement error handling and validation, write maintainable TypeScript/HTML/SCSS, and document decisions.

• Collaborate cross-functionally: translate business requirements into UI/UX solutions, present design trade-offs clearly, and iterate with stakeholders, data scientists, and backend engineers.

• Deploy to production: partner with engineers to ship to production (CI/CD pipelines, monitoring, error tracking) and create feedback loops for continuous improvement.

Required Skills

• Bachelor's degree in Computer Science, Software Engineering, or a related field.

• 4+ years of hands-on experience in frontend development, with at least one end-to-end project shipped to production used by real stakeholders.

• Strong proficiency in Angular and TypeScript

• Solid understanding of JavaScript/TypeScript fundamentals including ES6+ features, async programming, and promises/observables.

• Strong data visualization experience using libraries such as D3.js, Plotly.js, Highcharts, Chart.js, AG Grid or equivalent

• Strong HTML5 and CSS3/SCSS.

• Strong experience with RESTful API integration and handling async data.

Preferred Skills

• Solid grasp of software design patterns and architectural frameworks (MVC, MVVM, Component-based architecture) and their practical application in Angular applications.

• Experience with RxJS reactive programming and advanced state management patterns (NgRx, Akita, or similar).

• Hands-on experience with WebSocket integrations and real-time data streams for live dashboards.

• Experience with Angular Material or other enterprise UI component libraries.

• Experience with CI/CD pipelines and cloud deployment (AWS/Azure).