About the Team/Role This role is critical in building the technology that powers mobility payment systems used by fleets across Europe and Asia Pacific. As a Software Development Engineer 3 (SDE3), you will play a key role in developing scalable services, improving architectural maturity, and mentoring junior team members. You will lead the delivery of impactful features and help define system behaviors that serve global customers in EU and APAC. How you’ll make an impact • Design and implement scalable backend systems and APIs. • Lead design discussions and own features end-to-end. • Identify and address tech debt, bottlenecks, and reliability concerns. • Write high-quality, testable code and support DevOps automation. • Drive observability, performance, and service reliability improvements. • Mentor and support the development of junior and mid-level engineers. • Participate in cross-team technical planning and retrospectives. Experience you’ll bring • 5–8 years of professional backend engineering experience. • Expertise in Java, Spring Boot, REST APIs, and relational databases. • Experience with AWS, Docker/Kubernetes, and CI/CD workflows. • Exposure to distributed systems and event-driven architecture (Kafka preferred). • Strong debugging, troubleshooting, and performance optimization skills. • Excellent collaboration and communication skills. • Experience mentoring or leading peers in technical areas. Tech Stack Java • Spring Boot • REST APIs • Kafka • PostgreSQL • Docker • Kubernetes • AWS • gRPC • CI/CD • Git • Prometheus • Grafana WEX is a global commerce platform that helps businesses solve for operational complexities like employee benefits, managing and mobilizing fleets, and streamlining payments. With over 6,500 employees, we work with large and small companies in more than 200 countries and territories, and can tailor our services to meet the unique needs of their businesses. We hire people who share our passion for continuous innovation and client service that is unparalleled in the industry. Offering comprehensive and market competitive benefits, our offerings are designed to support your personal and professional well-being. If you’re looking for a growing career - come be part of WEX today. To learn more about our employee benefits, please click here. 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.

Software Development Engineer 3.

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