Senior Software Engineer, UI Platform

About Us

MarketAxess is on a journey to digitally transform one of the world’s largest financial markets, enabling the shift from analog, phone-based trading to a fully electronic marketplace. Why does this matter? Because our platform makes trading fixed-income more accessible, ultimately improving transparency, efficiency, and competition in the marketplace. Changing the way an established industry transacts is no easy feat. There will be twists and turns, because no one’s ever done this before. But now, more than 2,000 clients around the world rely on our solutions, and that number is only expected to grow in the years ahead. We know where we’re going. How we get there is up to us. Join us and help Take Us There.

The Role

We're seeking a Senior Software Engineer to join our UI Platform team to build the cornerstone of our frontend trading technology. Our team maintains the Component Library and services that enable real-time data flow to UIs across our trading products while providing technical leadership throughout the organization. As a key member of our team, you'll architect high-performance React, Node.js (server), and Design System components, all of which power mission-critical trading applications. Help us shape the future of financial trading interfaces with elegant, scalable solutions.

In this role you will:

Use your passion for creating high quality software to collaboratively build software solutions that impact the entire MarketAxess organization.

Be a valued part of our team which is proud of its culture of collaboration and experimentation.

Use your desire for continuous improvement and learning to take on new skills to accelerate our platform’s modernization.

We embrace diverse perspectives and people who are not afraid to challenge assumptions and prior ways of working. We believe this is key to learning and growing, both as a team, and as an individual.

You are the right candidate if you know how to:

Optimize Frontend Performance: Create virtualized grid components and real-time data visualizations that maintain responsiveness under heavy data loads

Dive Deep Technically: Understand React and associated libraries at their core, allowing you to solve complex rendering and state management challenges

Build Component Systems: Design and implement reusable, performant React components. Construct and maintain organization-wide component libraries with consistent APIs, theming, and documentation

Curate Large Monorepos: Manage enterprise monorepos with complex dependencies, ensuring scalability and efficient cross-team collaboration

Balance Stakeholder Needs: Navigate complex requirements from multiple teams while maintaining technical excellence and project momentum

How You'll Help Take Us There

Develop and maintain our core UI component library, focusing on sophisticated data grids and financial visualization components

Implement real-time data flow solutions that handle complex trading data with minimal latency

Create extensible, reusable components that work seamlessly across our product ecosystem

Collaborate with product teams to identify shared UI patterns and develop scalable solutions

Establish best practices for React/TypeScript development, state management, and testing

Mentor junior developers and guide teams on component implementation and architecture

Contribute to our modernization efforts as we evolve toward cloud-native technologies

What We’re Looking for

7+ years of enterprise JavaScript/TypeScript development experience

3+ years building complex applications with React hooks and component architecture

Expert knowledge of data grid implementations (AG-Grid) and virtualization techniques

Experience with modern state management (Redux) and asynchronous data handling

Proficiency with modern CSS approaches (styled-components, CSS-in-JS, Tailwind)

Strong testing practices using Jest and React Testing Library

Experience integrating with Java/Spring Boot backend services

Knowledge of WebSockets for real-time data applications

Proficiency with Git and collaborative workflows

Understanding of microservice architectures and API design

Familiarity with Agile development processes

Must be legally authorized to work in the United States without sponsorship

What You Can Expect from Us

Hybrid Environment: Our employees enjoy a mix of working in the office and from home

Free Food: We provide free lunch for employees when they are working in the office. Plus, our offices are stocked with snacks

Paid Time Off: Competitive PTO package including vacation and personal days, sick leave and charity days

Generous Parental Leave: Up to 20 weeks fully paid leave

401(k): Dollar-for-dollar employer match up to $17,500

Employee Stock Purchase Plan: Employees can purchase MarketAxess common stock at a discount

Wellness Stipend: We provide employees with up to $1K annually towards gym memberships, home office equipment and more

Onsite Healthcare: We offer convenient access to world-class care through Mount Sinai at our Hudson Yards location

Tuition Assistance and Professional Development: Benefit from live and on-demand learning, role-specific training, employee-led Lunch and Learns and guest speakers

Core benefits: Highly competitive medical, dental, and vision programs

For job positions in NYC, NY, and other locations where required, the estimated salary range for a new hire into this position is $150,000 USD to $225,000 USD. Actual salary may vary depending on job-related factors, which may include knowledge, skills, experience, and location. You may also be eligible for annual cash incentives, equity, and other benefit programs.

MarketAxess Corporation and its affiliates provide equal employment opportunities to all persons regardless of age, color, national origin, citizenship status, physical or mental disability, race, religion, creed, gender, sex, sexual orientation, gender identity and/or expression, genetic information, marital status, veteran status, or any other legally protected characteristic in the location in which the candidate is applying.

All of your information will be kept confidential according to EEO guidelines.

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