Senior Frontend Engineer

Summary

Are you a front end engineer who loves crafting fast, intuitive, and visually polished user experiences? Topstep is looking for a Senior Front End Engineer to own and evolve the client-side experience of our trading platform. In this role, you'll build the interfaces that thousands of active traders rely on every day for real-time trading, market data visualization, and account management.

You'll work primarily in React and TypeScript, building performant, responsive UIs that handle real-time data streams and complex user interactions. This isn't just about shipping features—you'll shape front end architecture decisions, establish UI engineering standards, and ensure our platform delivers a seamless experience as we grow. You'll own your features end-to-end, from component design through production deployment.

This role is ideal for someone who combines strong front end expertise with pragmatic engineering judgment. You'll balance the need for polished, accessible interfaces with the reality of evolving business requirements. You'll contribute to technical strategy, mentor other engineers, and help define what front end engineering excellence means at Topstep.

Key Responsibilities

• Design and build high-performance, responsive UI components and features for our trading platform using React and TypeScript.
• Own front end features end-to-end, from technical design through production deployment, monitoring, and iteration.
• Collaborate with product and design to translate user needs and mockups into scalable, maintainable front end solutions.
• Contribute to front end architecture decisions, establishing patterns, component libraries, and practices that other teams can follow.
• Write clean, well-tested code with a strong focus on performance, accessibility, and cross-browser compatibility.
• Participate in on-call rotations, respond to incidents, and drive continuous improvement of front end reliability.
• Build and maintain observability into your features through error tracking, performance monitoring, and logging.
• Mentor engineers through code reviews, pairing sessions, and sharing knowledge about front end best practices and design patterns.
• Balance technical debt with feature delivery, making thoughtful trade-offs based on business priorities and technical constraints.
• Contribute to engineering culture through documentation, tooling improvements, and process refinements.

Required Qualifications and Key Competencies

• 5+ years of front end engineering experience building and shipping production applications at scale.
• Strong proficiency in React with deep understanding of component lifecycle, hooks, state management, and performance optimization.
• Strong proficiency in TypeScript and modern JavaScript (ES6+).
• Experience building complex, data-driven UIs with real-time updates (WebSockets, SignalR, or similar).
• Solid understanding of front end build tooling (Webpack, Vite, or similar), bundling strategies, and code splitting.
• Experience with modern CSS approaches (CSS Modules, Styled Components, Tailwind, or similar) and responsive design.
• Strong testing mindset with practical experience in front end testing frameworks (Jest, React Testing Library, Playwright, or Cypress).
• Experience with RESTful APIs and integrating front end applications with backend services.
• Excellent problem-solving skills with ability to debug complex UI and performance issues.
• Clear communication skills with ability to explain technical concepts to both technical and non-technical audiences.
• Comfort working in fast-paced environments with evolving priorities and ambiguous requirements.

Nice to Have

• Experience with state management libraries (Redux, Zustand, Recoil, or similar).
• Experience with design systems or component library development.
• Background in data visualization libraries (D3.js, Recharts, or similar) for charting and real-time data display.
• Experience with micro-frontend architectures or module federation.
• Familiarity with .NET backends and C# APIs.
• Experience with container technologies (Docker) and cloud platforms (AWS).
• Previous work in financial services, fintech, or compliance-regulated industries.
• Understanding of trading systems, market data, or brokerage operations.
• Accessibility (WCAG) expertise and experience building inclusive interfaces.
• Performance optimization experience (Core Web Vitals, bundle analysis, lazy loading).

Company Culture & Perks

• Topstep is an engaging working environment which ranges from fully remote to hybrid. We foster a culture of collaboration with cameras on during meetings and a robust Slack environment for communication. 
• Seven Company-paid Holidays and generous Family Leave. Paid time off is front-loaded. 
• Competitive 401(k) matching, health, dental, and vision insurance is offered for full time employees.
• Vacations are encouraged with a bonus for taking 5 consecutive days. Employee referrals are bonused. Topstep offers a food and groceries budget and contributes towards health and wellness.

New Hire Base Salary Range

• $175,000-$215,000
• Bonus: This position is eligible for a performance-based bonus as provided by the plan terms and governing documents.
• The compensation offered will take into account internal compensation structure and may vary depending on the candidate's geographic region, job-related knowledge, skills, and experience among other factors.

Equal Opportunity Employer

Topstep is an Equal Opportunity Employer. We are committed to fostering an inclusive environment where all employees and applicants are valued. All qualified candidates will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, age, disability, or veteran status, in compliance with applicable federal, state, and local laws.

Interested in the role? Apply today with your resume and cover letter!

At this time immigration sponsorship is not available for this position (including H-1B, STEM OPT training plans, etc.).