Software Engineer (Java, SQL)

About The Company WEX is a leading provider of innovative financial technology solutions, dedicated to simplifying complex payment processes for businesses across various industries. With a commitment to excellence and a focus on customer-centric services, WEX offers a comprehensive suite of payment processing, data, and fleet management solutions. The company operates globally, serving clients in North America, Europe, and beyond, and is recognized for its dedication to technological advancement, security, and operational efficiency. WEX's culture emphasizes innovation, collaboration, and continuous improvement, making it an ideal environment for talented professionals seeking to make a meaningful impact in the fintech space. About The Role As a Staff Software Engineer on the Digital Credit Application (DCA) team, you will play a pivotal role in shaping the architecture and stability of our mission-critical platform. This remote position requires residing within 30 miles of one of the specified locations: Portland, ME; Boston, MA; Chicago, IL; Dallas, TX; San Francisco Bay Area, CA; or Seattle, WA. You will serve as a technical leader, overseeing backend services and complex transaction flows that are essential for credit adjudication processes. Your expertise will guide the team in transitioning towards a more flexible microservice architecture, addressing current platform limitations, and resolving operational challenges. You will collaborate closely with product managers, engineering teams, and external partners to design scalable, secure, and high-performance systems. Your hands-on approach will involve setting technical standards, mentoring junior engineers, and tackling large-scale, complex problems that directly influence our core business operations across North America Mobility, Over-the-Road, and Customer Payment Solutions sectors. Qualifications

• 10+ years of progressive experience in software design and development at scale
• Deep expertise in Java and the Spring ecosystem (Spring Boot, Spring Data)
• Proven experience designing and operating distributed systems and microservices architectures in cloud environments (AWS, Azure, GCP)
• Extensive experience with high-volume data modeling, transactional integrity, and database technologies (relational: PostgreSQL; NoSQL: Cassandra, MongoDB)
• Strong practical knowledge of event-driven architectures and messaging systems (Kafka, RabbitMQ)
• Experience working with Service Mesh technologies such as Istio for traffic management, security, and resiliency
• Deep understanding of Test-Driven Development (TDD), regression testing strategies, and engineering quality standards
• Proficiency with CI/CD pipelines, deployment automation, and observability tools (Prometheus, Grafana, Jaeger)
• Excellent analytical, problem-solving, and communication skills
• Bachelor’s degree in Computer Science or a related field

Responsibilities

• Lead the design, architecture, and implementation of highly available and resilient microservices using Java and Spring ecosystem
• Drive technical roadmaps, project planning, and architectural decisions ensuring a balance between rapid delivery and long-term stability
• Ensure system performance, observability, security, and scalability meet high standards under high load conditions
• Establish and advocate engineering best practices, including code quality, testing, and code review processes
• Collaborate with product management and front-end teams to design effective APIs (REST/gRPC)
• Provide strategic guidance and technical mentorship to engineering teams across projects
• Advise senior leadership on complex technical trade-offs and lead cross-organizational technical initiatives
• Identify and resolve complex, cross-functional technical problems to improve platform robustness
• Stay current with industry trends and incorporate innovative solutions to enhance platform capabilities

Benefits

• Comprehensive health, dental, and vision insurance plans
• Retirement savings plan with company contributions
• Paid time off and holidays to support work-life balance
• Health savings account (HSA) and flexible spending accounts (FSA)
• Life insurance and disability insurance coverage
• Tuition reimbursement and professional development opportunities
• Remote work flexibility with location-specific considerations

Equal Opportunity WEX is an equal opportunity employer committed to fostering an inclusive environment. We celebrate diversity and are dedicated to creating a workplace that values all individuals regardless of race, ethnicity, gender, age, sexual orientation, disability, or background. All qualified applicants will receive consideration for employment without regard to any protected characteristic. We believe that diverse teams drive innovation and excellence, and we are committed to providing equal employment opportunities to all candidates.