Senior Software Development Engineer

About the Role

We’re looking for a Senior Software Engineer with strong API and back-end expertise to join our Connected Fleet team, developing tools to help clients modernize the vehicle experience.

• Design, develop and maintain robust, scalable, high-performance web applications.
• Develop public REST APIs using Python and Node for inter-service and inter-system communication.
• Implement comprehensive automated testing strategies: unit, integration, end-to-end, load and performance testing.
• Identify bottlenecks and technical debt, and 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.
• Conduct code reviews, enforce engineering best practices and continuously raise the quality bar.
• Troubleshoot complex production issues, author root‑cause analysis documents and ensure lasting performance and reliability.
• Maintain robust documentation: design docs, run books, change‑management docs, and readiness plans.
• Analyze data to understand risk problems and build effective solutions; analyse system performance and identify opportunities for improvement.

• 5–8 years of professional experience in software engineering.
• Expertise in backend development, including strong proficiency in Python, Node.js, Go, or C++ and building and optimizing RESTful APIs and SQL.
• Strong foundation in data structures and algorithms, object‑oriented design, and problem‑solving.
• Experience with cloud‑native environments (Docker, Kubernetes, AWS, GCP, or Azure).
• Experience with event‑driven architecture and tools such as Kafka.
• Familiarity with relational or No
  
  SQL databases (e.g., SQL, Mongo
  
  DB).
• Expertise in designing and developing internet‑scale services with scalability, availability, security, and reliability design tenets.
• Proficiency with Git, automated testing frameworks, and CI/CD workflows.
• Clear written and verbal communication skills, and a collaborative and empathetic mindset.

• Awareness of API security requirements.
• Experience or familiarity with telematics, time‑series or geospatial data.
• Ability to work within existing codebases with legacy system constraints.
• Familiarity with modern front‑end frameworks such as Angular or React.
• Solid understanding of web security fundamentals (authentication, authorization, data protection).
• Proven experience with micro‑frontends or module federation.
• Experience developing with AI‑driven tools.
• Experience working with geographically distributed teams.

Pay Range: $ – $

Benefits include health, dental and vision insurance, retirement savings plan, paid time off, health savings account, flexible spending accounts, life insurance, disability insurance, tuition reimbursement, and more.

WEX is an equal opportunity employer committed to diversity and inclusion in the workplace. All qualified applicants will receive consideration for employment without regard to sex, race, color, age, national origin, religion, sexual orientation, gender identity, protected veteran status, disability or other protected status. WEX promotes a drug‑free workplace. Qualified individuals with a disability have the right to request a reasonable accommodation.

If you require a reasonable accommodation as a result of your disability at any point in the job application process, please submit your request through our Reasonable Accommodation Request Form. This form is for accommodation requests only and cannot be used to inquire about the status of applications.