Software Engineer 2

WEX; Portland (ME); On-site; USD 110,000 - 160,000; Full time

Benefits offered by this job

Health insurance

Dental insurance

Vision insurance

Retirement plan

Paid time off

Job summary

WEX is seeking a Full-stack Software Engineer II to contribute to the Beyond Fuel and Expense Management initiative within WEX Mobility Engineering. This role spans web, mobile, backend, APIs, and partner integrations to deliver secure, scalable payment and expense management solutions.

The role is an individual contributor focusing on core capabilities while collaborating with Product, Design, Security, and engineering teams across the United States and India.

Qualifications

• Requires a Bachelor's degree in CS/Software Engineering or related field.
• 4–6 years of professional software engineering experience.
• Strong proficiency in Java and Spring Boot.
• Experience designing REST APIs, distributed systems, and relational data models.
• Experience with cloud platforms, preferably AWS, and CI/CD pipelines.
• Knowledge of authentication, authorization, and secure API design.
• Experience with testing (unit/integration/e2e) and production services.
• Strong communication and collaboration across teams.

Responsibilities

• Contribute to technical design, development, and implementation of features for the Beyond Fuel and Expense Management platform.
• Build full-stack capabilities across UI, backend, data models, and external integrations.
• Translate product requirements into technical designs, milestones, and plans.
• Design reusable business capabilities and APIs for web, mobile, and partner experiences.
• Implement payment workflows, expense capture, approvals, spend controls, and reporting.
• Write production code and participate in code reviews and engineering discussions.
• Ensure automated testing, API contracts, observability, and secure development.

Skills

Java

Spring Boot

REST APIs

Distributed systems

Cloud AWS

CI/CD

Security

Testing

Observability

AI tools

Team collaboration

Education

Bachelor's degree in Computer Science or related field

Tools

GitHub Copilot

Cursor

Claude

Job description

About this job

About the Team/Role

Are you excited about building solutions that expand fleet payments beyond fuel and simplify expense management? We are seeking a Full-stack Software Engineer II with solid backend development experience to contribute to the WEX Beyond Fuel and Expense Management initiative within WEX Mobility Engineering. This is a growing initiative, offering the opportunity to contribute to architecture, participate in setting engineering practices, and help build product capabilities from design through production launch. You will work across web & mobile applications, backend services, APIs, and partner integrations to deliver secure, reliable, and scalable payment and expense management experiences.

This is an individual contributor role focused on delivering core capabilities while collaborating with Product, Design, Security, and engineering teams across the United States and India.

How you’ll make an impact:

• Contribute to the 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 that support web, mobile, and partner experiences.
• Implement features for payment workflows, expense capture, approvals, spend controls, transaction reporting, and reconciliation.
• 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.
• Adhere to standards for automated testing, API contracts, observability, accessibility, and secure development.
• Build production readiness into the product through actionable logs, distributed tracing, metrics, dashboards, and alerts.
• Use approved AI tools throughout development, testing, and documentation, and review and validate all generated output.
• Partner with senior engineers and tech leads to identify dependencies, manage technical risks, and support delivery.
• Own technical outcomes from initial implementation through deployment, operation, and continuous improvement.

Experience you'll bring

• 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 to collaborate effectively across multidisciplinary teams.
• Demonstrated ability to collaborate effectively with teammates and participate constructively in code reviews and engineering discussions.
• Hands-on experience leveraging AI coding assistants and development tools (e.g., GitHub Copilot, Cursor, Claude) to accelerate software development, refactoring, and code generation.

Preferred Qualifications

• 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

The base pay range represents the anticipated low and high end of the pay range for this position. Actual pay rates will vary and will be based on various factors, such as your qualifications, skills, competencies, and proficiency for the role. Base pay is one component of WEX's total compensation package. Most sales positions are eligible for commission under the terms of an applicable plan. Non-sales roles are typically eligible for a quarterly or annual bonus based on their role and applicable plan. WEX's comprehensive and market competitive benefits are designed to support your personal and professional well-being. Benefits include health, dental and vision insurances, retirement savings plan, paid time off, health savings account, flexible spending accounts, life insurance, disability insurance, tuition reimbursement, and more. For more information, check out the "About Us" section.

Each posting applies separately and lists its own pay.