Software Engineer 2

WEX • Portland, ME

1d

About The Position

WEX is seeking a Full-stack Software Engineer II with solid backend development experience to contribute to the Beyond Fuel and Expense Management initiative within WEX Mobility Engineering. The growing initiative offers opportunities to contribute to architecture, engineering practices, and product capabilities from design through production launch. The role works across web and mobile applications, backend services, APIs, and partner integrations to deliver secure, reliable, and scalable payment and expense management experiences. It is an individual-contributor role focused on core capability delivery, in collaboration with Product, Design, Security, and engineering teams across the United States and India.

The engineer owns technical outcomes from initial implementation through deployment, operation, and continuous improvement. They work with senior engineers and tech leads to identify dependencies, manage technical risks, and support delivery. The anticipated base pay range is $96,100 to $115,500. WEX describes its benefits as including health, dental and vision insurance, a retirement savings plan, paid time off, health savings and flexible spending accounts, life and disability insurance, tuition reimbursement, and more.

Requirements

• Bachelor's degree in Computer Science, Software Engineering, or a related field.
• 4–6 years of professional software engineering experience.
• Strong proficiency in Java and Spring Boot, or comparable backend technologies.
• Strong understanding of object-oriented design, data structures, algorithms, and software design principles.
• Experience designing REST APIs, distributed systems, relational data models, and event-driven integrations.
• Experience with cloud platforms, preferably AWS, and automated CI/CD pipelines.
• Knowledge of authentication, authorization, data protection, and secure API design.
• Experience with unit, integration, end-to-end, and performance testing.
• Experience building and operating production services with monitoring, distributed tracing, and incident troubleshooting.
• Strong communication skills for collaboration across multidisciplinary teams.
• Ability to collaborate effectively with teammates and participate constructively in code reviews and engineering discussions.
• Hands-on experience using AI coding assistants and development tools such as GitHub Copilot, Cursor, or Claude to accelerate software development, refactoring, and code generation.

Nice To Haves

• Master's degree in Computer Science or Software Engineering.
• 6+ years of software engineering experience.
• Experience with API Gateways, service mesh technologies, and cloud networking concepts.
• Familiarity with OpenTelemetry, Grafana, Prometheus, or similar observability platforms.
• Exposure to web and mobile application development.

Responsibilities

• Contribute to technical design, development, and implementation of features for the Beyond Fuel and Expense Management platform.
• Build full-stack capabilities spanning user interfaces, backend services, data models, and external integrations.
• Translate product requirements into technical designs, delivery milestones, and implementation plans.
• Design reusable business capabilities and APIs for web, mobile, and partner experiences.
• Implement payment workflows, expense capture, approvals, spend controls, transaction reporting, and reconciliation features.
• Evaluate technical options and communicate tradeoffs involving performance, security, reliability, cost, and delivery timelines.
• Write production code, review contributions, and resolve complex issues across the application stack.
• Participate in design reviews, code reviews, and technical discussions to support engineering quality.
• Follow standards for automated testing, API contracts, observability, accessibility, and secure development.
• Build production readiness through actionable logs, distributed tracing, metrics, dashboards, and alerts.
• Use approved AI tools in development, testing, and documentation, and review and validate generated output.
• Partner with senior engineers and tech leads to identify dependencies, manage technical risks, and support delivery.
• Own technical outcomes from implementation through deployment, operation, and continuous improvement.

Benefits

• Health insurance
• Dental insurance
• Vision insurance
• Retirement savings plan
• Paid time off
• Health savings account
• Flexible spending accounts
• Life insurance
• Disability insurance
• Tuition reimbursement
• Quarterly or annual bonus eligibility for non-sales roles, subject to role and applicable plan

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level