Sr. Frontend Engineer - Intelligent Finance | Brex

As a Senior Frontend Engineer, you will work across the entire Brex web application stack to design, build, test, and maintain client-facing financial products, interactive dashboards, and scalable internal developer tooling. Based in Brex's New York office, you will partner directly with engineers, Product Designers, Sales, and Customer Support to solve complex user experience problems end-to-end. You will leverage data-driven experimentation, architect modular frontend components using React, TypeScript, ES6+, and Webpack, and polish web surfaces to an exceptional standard of performance and visual quality as Brex expands into new international markets.

Key Responsibilities

Web Application Architecture & Product Development

• End-to-End Frontend Architecture: Architect, develop, test, and maintain robust client-side software applications and UI components across the Brex web product ecosystem.
• Cross-Functional Collaboration: Partner closely with engineering teams across the organization, as well as customer-facing functions (Sales, Support), to deeply understand customer workflows and translate needs into features.
• Data-Driven Experimentation: Design, implement, and analyze frontend experiments and A/B tests to continuously measure and improve the user experience.
• Ownership & Polish: Own problems end-to-end—evaluating user experience design, frontend data modeling, scalability, operability, and ongoing usage metrics while tuning features to a high bar of visual and performance excellence.

Technical Standards & Project Leadership

• Engineering Standards: Uphold and champion Brex's frontend code quality standards, automated testing requirements, accessibility practices, and modern client-side architectures.
• Cross-Functional Leadership: Lead multi-functional engineering projects with complex, moving requirements, helping guide long-term technical vision and operational speed.

Requirements

Technical Depth & Frontend Foundations

• Professional Experience Track: 7+ years of professional software engineering experience specializing in modern frontend web technologies.
• Core Frontend Stack: Deep proficiency in ES6+, React, TypeScript, and Webpack (or equivalent modern build systems).
• Client-Side Architecture: Proven experience architecting, developing, profiling, and testing complex client-side codebases end-to-end.
• Client-Facing Products: Direct track record of building, shipping, and maintaining production-grade, user-facing software applications.
• Communication & Interpersonal Skills: Strong written and verbal communication skills, with the ability to lead technical discussions, document systems clearly, and collaborate effectively.

Preferred Qualification

• Experience collaborating closely with specialists across product management, UI/UX design, and operational teams.
• Hands-on experience developing mobile applications using React Native.
• Basic working familiarity with modern product design tools (e.g., Figma).
• Strong technical writing habits with a proactive, self-directed work ethic.

Total Rewards & Benefits

• Compensation & Equity: New York base salary range ($192,000 – $240,000 USD) + competitive Brex equity grants + comprehensive benefits package.
• Workplace Flexibility: Coordinated hybrid office environment alongside up to 4 weeks of fully remote work flexibility per year.
• Healthcare & Wellbeing: Comprehensive medical, dental, and vision health coverage for employees and eligible dependents.
• Career Growth: Dedicated resources, tools, and mentorship programs to accelerate career progression within Brex Engineering.