Staff Software 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
• ### ### As a
• Staff Software Engineer
• on the DCA team, you will be a key technical leader responsible for the stability, performance, and future architecture of our mission-critical
• Digital Credit Application (DCA)
• platform. This role requires deep technical ownership, focusing on the backend services and complex transaction flows required before a credit decision (adjudication). You will be a vital link between Product and Engineering, actively
• managing stakeholder relationships
• by translating intricate business requirements into scalable, secure, and robust system designs. Your mission is to guide the team toward a more
• flexible microservice architecture
• to address current platform limitations. You will drive solutions to persistent problems like data transaction conflicts, integration complexities with external fraud APIs (Plaid, LexisNexis), and operational challenges stemming from the current technology stack. This is a hands-on position where you will set technical standards, provide critical
• mentorship to junior engineers
• , and solve complex, large-scale problems that directly impact our core business success across
• North America Mobility (NAM), Over-the-Road (OTR),
• and
• Customer Payment Solutions (CPS)
• How you’ll make an impact
• Lead the design, architecture, and implementation of highly available and resilient microservices using Java and the Spring ecosystem.
• Drive technical roadmaps, project plans, and architectural decisions, balancing rapid delivery with long-term platform stability.
• Be responsible for critical non-functional requirements, including system performance, observability, security, and scalability under high load.
• Define and advocate for engineering best practices, including code quality standards, comprehensive testing strategies, and efficient code review processes.
• Partner closely with product management and front-end teams to design clean, effective, and robust APIs (REST / gRPC).
• Advise senior leadership on complex technical trade-offs and lead technical initiatives across organizational boundaries, driving consensus and adoption.
• Provide technical mentorship and guidance to mid-level and senior engineers, fostering a culture of high engineering standards.
• Experience you’ll bring
• ###
• A highly skilled, innovative, and experienced Software Engineer capable of acting and delivering to complex business needs.
• Have
• 10+ years
• of progressive software design and development experience at scale, with significant experience in a technical leadership or staff-level role.
• Deep expertise
• in
• Java
• and the
• Spring ecosystem (Spring Boot, Spring Data)
• Proven experience designing and operating
• distributed systems
• and
• microservices architectures
• in a cloud environment (AWS, Azure, or GCP).
• Mandatory experience with high-volume
• data modeling, transactional integrity, and database technologies
• (both relational like PostgreSQL and NoSQL like Cassandra / MongoDB).
• Strong practical experience with
• event-driven architectures
• and messaging systems (e.g.,
• Kafka
• or RabbitMQ).
• Experience
• working with
• Service Mesh technologies like Istio
• for traffic management, security (mTLS), and resiliency patterns.
• Demonstrated commitment to engineering quality, including deep experience with
• Test-Driven Development (TDD)
• and designing robust
• regression testing
• strategies.
• Expert knowledge of
• CI / CD pipelines
• , deployment automation, and modern observability tools (e.g., Prometheus, Grafana, Jaeger).
• Excellent analytical skills and capability in identifying and resolving complex, cross-functional problems.
• Strong written and verbal communication skills, able to present complex technical concepts clearly.
• Bachelor's degree in Computer Science or a related field.
• Pay Range : $135,000.00 - $180,000.00WEX 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 .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 .This form is for accommodation requests only and cannot be used to inquire about the status of applications.

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