Remote Staff Software Engineer - Full-Stack, Payments

WEX Inc.; Portland (ME); Remote; USD 141,000 - 173,000; Full time

Job summary

WEX Inc. in Portland, ME is hiring a Staff Software Engineer to lead the Beyond Fuel and Expense Management initiative.

You will own architecture across web & mobile, backend services, data models, and partner integrations, while guiding engineering teams nationwide. This role remains hands-on with design reviews, code reviews, and mentoring, and collaborates with Product, Security, and Design to deliver scalable payment and expense platforms.

Qualifications

• 8–10 years of professional software engineering experience.
• Experience taking a new product from concept to production.
• Strong proficiency in Java and Spring Boot.
• Experience designing REST APIs, distributed systems, and data models.

Responsibilities

• Lead the technical architecture, design, and implementation of the Beyond Fuel and Expense Management platform.
• Guide engineers through design reviews, code reviews, and mentoring.
• Build full-stack capabilities spanning UI, backend services, data models, and integrations.
• Establish testing, observability, security, and API contracts for production readiness.

Skills

Java

Spring Boot

REST APIs

Distributed systems

Cloud AWS

CI/CD pipelines

Security design

Testing

Mentoring engineers

AI coding tools

Performance troubleshooting

Education

Bachelor's degree in CS/SE

Master's degree

Tools

OpenTelemetry

Grafana

Prometheus

AWS

GitHub Copilot

Cursor

Claude

Job description

WEX Inc. in Portland, ME is hiring a Staff Software Engineer to lead the Beyond Fuel and Expense Management initiative.

You will own architecture across web & mobile, backend services, data models, and partner integrations, while guiding engineering teams nationwide. This role remains hands-on with design reviews, code reviews, and mentoring, and collaborates with Product, Security, and Design to deliver scalable payment and expense platforms.