Remote Senior Full-Stack Engineer: Payments & Expenses

WEX; Portland (ME); Remote; USD 140,000 - 190,000; Full time

Benefits offered by this job

Health Insurance

Retirement Savings Plan

Paid Time Off

Health Savings Account

Flexible Spending Accounts

Life Insurance

Disability Insurance

Tuition Reimbursement

Job summary

WEX is seeking a remote Senior Software Engineer to contribute to the Beyond Fuel and Expense Management initiative within WEX Mobility Engineering. The role focuses on backend Java/Spring Boot development, designing REST APIs, and building scalable services across web and mobile platforms.

You will shape architecture, set engineering practices, and drive production readiness while collaborating with Product, Security, and cross-functional teams across the United States and India.

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or a related field.
• 6–8 years of professional software engineering experience.
• Strong proficiency in Java and Spring Boot, or comparable backend technologies.
• 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 building and operating production services with monitoring and incident troubleshooting.
• Hands-on experience leveraging AI coding assistants and development tools to accelerate software development.

Responsibilities

• Contribute to the technical architecture, design, and implementation of 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.
• Establish patterns for payment workflows, expense capture, approvals, spend controls, and reconciliation.
• 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.

Skills

Java

Spring Boot

REST APIs

Distributed systems

CI/CD

AWS

Object-oriented design

Education

Bachelor's degree in Computer Science or related field

Tools

AWS

CI/CD tooling

OpenTelemetry

Grafana/Prometheus

Job description

WEX is seeking a remote Senior Software Engineer to contribute to the Beyond Fuel and Expense Management initiative within WEX Mobility Engineering. The role focuses on backend Java/Spring Boot development, designing REST APIs, and building scalable services across web and mobile platforms.

You will shape architecture, set engineering practices, and drive production readiness while collaborating with Product, Security, and cross-functional teams across the United States and India.