Staff Software Engineer, Backend & APIs

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

​ About the Team/Role

We’re looking for a Staff software engineer with strong front-end expertise and full-stack exposure to join our NAM Experiences team. You’ll help design and develop intuitive, performant web applications that integrate with our backend services and deliver seamless customer experiences that enhance the customer experience. These platforms allow large fleets and transportation companies to issue and manage credit for their drivers and operators—powering everything from digital spend controls to real-time transaction insights. You’ll focus on building robust and responsive user interfaces that help fleet managers configure controls, view reports, and streamline daily operations.

​ How you’ll make an impact:

• Design, develop, and maintain robust, scalable, and high-performance web applications .

• Build and evolve shared component libraries and design-system assets used across multiple Mobility applications.

• Craft systems designs, lead design decisions, and drive alignment with other senior engineers.

• Lead comprehensive automated testing strategies , including unit, integration, end-to-end, load, and performance testing.

• Identify bottlenecks and tech debt; drive incremental scalability, and stability improvements .

• Develop and enhance automation frameworks for testing, monitoring, auto-scaling, continuous integration and deployment to reduce time to market

• Partner with Product, Design, and UX to deliver high-quality user experiences

• Lead code reviews (comment, approve, seek revisions, merge), and champion engineering best practices, and continuously raise the quality bar.

• Troubleshoot complex production issues, devise fixes, author root cause analysis documents, and ensure lasting performance and reliability.

• Conduct objective and comparative analyses of competing technologies to advise the team of pros and cons of a technology solution

• Devise mechanisms to create robust documentation (design docs, run books, change management docs, and readiness plans)

• Design tech strategy for live-site support by designing monitoring systems via code, ensuring rapid incident resolution, and driving continuous improvement.

• Drive cross-team projects as a single-threaded-owner (STO) or tech lead, and actively unblock other engineers to make progress.

• Gain hands-on experience with automation and AI-driven engineering solutions .

​Experience you'll bring:

• Bachelor’s degree in Computer Science or Software Engineering.

• 8-10 years of professional experience in software engineering.

• Strong foundation in data structures and algorithms, object-oriented design , and problem-solving.

• Expertise in designing and developing complex web applications with scalability, availability, security, and reliability design tenets.

• Proven experience with micro-frontends or module federation.

• Strong proficiency with modern front-end frameworks such as Angular (preferred) or React.

• Strong skills in TypeScript/JavaScript, HTML5, or CSS3/SASS .

• Experience integrating front-end applications with RESTful or GraphQL APIs .

• Solid understanding of web security fundamentals including authentication, authorization, and data protection.

• Excellent collaboration and communication skills with a focus on user experience and maintainability .

• Clear written and verbal communication skills, and a collaborative and empathetic mindset .

Preferred Qualifications:

• Master’s degree in computer science or software engineering.

• 10 years of experience in software engineering.

• Exposure to backend technologies such as Java(preferred) or Node.js.

• Experience with cloud-native environments , including Docker, Kubernetes, or AWS/GCP/Azure.

• Proficiency with relational or NoSQL databases ; e.g. MySQL, MongoDB..

• Experience building and scaling design systems , with strong knowledge of accessibility (WCAG), and performance optimization.

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: $140,600.00 - $173,100.00