Senior Front End Engineer

This is a remote position; however, the candidate must reside within 30 miles of one of the following locations: Portland, ME; Boston, MA; Chicago, IL; Dallas, TX; San Francisco Bay Area, CA; and Seattle/WA.

About the Team/Role

The Core Engineering team at WEX is responsible for building the enterprise-grade foundation for scalable and secure customer-facing applications across the company. Our core mission is to empower product development teams to rapidly integrate intuitive, high-performance, and accessible user interfaces into customer-facing applications in highly regulated industries such as payments and healthcare.

We are seeking a Senior Frontend Application Engineer with specialized expertise in building robust, modern web interfaces and user experiences. The ideal candidate will be a technical leader who combines deep knowledge of frontend frameworks, UI/UX best practices, and performance optimization with a strong foundation in cloud infrastructure and DevOps principles. This role requires a unique blend of skills to navigate the complexities of delivering trusted, secure, and highly compliant user experiences while adhering to stringent security and accessibility standards.

How you'll make an impact

• Be a highly motivated engineer who loves working on small, highly performing teams.

• Be collaborative, a solid communicator, and work well with your team and stakeholders.

• Serve as a technical authority on high-performing teams, leading the design and implementation of scalable, production-grade frontend solutions.

• Architect and develop intuitive, responsive, and accessible user interfaces for WEX's core financial and healthcare products.

• Design and implement robust testing frameworks for frontend applications, ensuring usability, cross-browser compatibility, and regulatory compliance (e.g., WCAG).

• Lead the integration of frontend components with backend APIs and services by collaborating with backend engineering, product, and UX/UI design teams.

• Engineer and maintain high-performance, maintainable codebases for web applications, ensuring optimal load times, responsiveness, and user experience.

• Develop and automate CI/CD pipelines to streamline the lifecycle of frontend applications, from development and testing to deployment and monitoring.

• Apply advanced observability and monitoring practices to frontend applications to guarantee the robustness, performance, and traceability of all deployed user interfaces.

• Champion and implement advanced DevOps and frontend architecture principles, balancing rapid innovation with the rigorous compliance and security standards required for the financial and healthcare sectors.

Experience you'll bring

• A Master's degree or foreign equivalent in Computer Science, Engineering, or a closely related quantitative field and 3+ years of professional experience in frontend application development; OR a Bachelor's degree or foreign equivalent in the same fields, and 5+ years of progressive, post-baccalaureate professional experience in frontend application development. A primary focus on JavaScript/TypeScript and modern web technologies is required.

• 3+ years of specialized, hands-on experience building, deploying, and maintaining complex web applications in large-scale production environments.

• Expert-level proficiency with modern JavaScript/TypeScript, HTML5, CSS3, and popular frontend frameworks (e.g., React, Angular, – React preferred).

• Demonstrated experience designing and maintaining complex, high-performance user interfaces, state management patterns (e.g., Redux, Zustand), and integrating with RESTful/GraphQL APIs.

• Strong, demonstrable knowledge of cloud services (AWS, Azure, or GCP) for hosting and deploying web applications (e.g., S3, CloudFront, Amplify, Vercel) and expert-level proficiency in infrastructure-as-code frameworks (e.g., Terraform, CloudFormation) for frontend infrastructure.

• Proven experience applying advanced DevOps principles to frontend development, including containerization (Docker for build environments), CI/CD automation, bundle optimization, and production monitoring (e.g., RUM, Lighthouse).

• Excellent communication skills, with a proven ability to articulate complex frontend architecture and UI/UX solutions to both technical and non-technical stakeholders.

The base pay range represents the anticipated low and high end of the pay range for this position. Actual pay rates will vary and will be based on various factors, such as your qualifications, skills, competencies, and proficiency for the role. Base pay is one component of WEX's total compensation package. Most sales positions are eligible for commission under the terms of an applicable plan. Non-sales roles are typically eligible for a quarterly or annual bonus based on their role and applicable plan. WEX's comprehensive and market competitive benefits are designed to support your personal and professional well-being. Benefits include health, dental and vision insurances, retirement savings plan, paid time off, health savings account, flexible spending accounts, life insurance, disability insurance, tuition reimbursement, and more. For more information, check out the "About Us" section.Pay Range: $120, $160,000.00

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