Remote Staff Software Engineer — Payments & Expense Platform

WEX Inc.; United States; Remote; USD 141,000 - 173,000; Full time

Benefits offered by this job

Health insurance

Dental and vision insurance

Retirement savings plan

Paid time off

Health savings account

Job summary

WEX Inc. is seeking a remote Staff Software Engineer to lead the Beyond Fuel and Expense Management platform within Mobility Engineering. You will shape architecture, establish practices, and drive product delivery from design to production launch.

You will guide frontend, backend, APIs, and partner integrations, mentoring engineers and aligning with Product, Security, and design teams across the US and India.

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or related field.
• 8–10 years of professional software engineering experience.
• Experience taking a new product from concept to production and evolving it as adoption grows.
• Strong proficiency in Java and Spring Boot, or comparable backend technologies.
• Understanding of OO 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.
• Ability to influence technical direction across teams without formal management authority.
• Ability to explain technical decisions clearly to engineering and business stakeholders.
• Track record of mentoring engineers and improving engineering practices through hands-on collaboration.
• Hands-on experience leveraging AI coding assistants and development tools (e.g., GitHub Copilot, Cursor, Claude) to accelerate software development, refactoring, and code generation.

Responsibilities

• Lead 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.
• Design reusable business capabilities and APIs that support web, mobile, and partner experiences.
• Establish patterns 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.
• Guide engineers through design reviews, code reviews, technical mentoring, and collaborative problem-solving.
• Establish 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 engineering leaders to identify dependencies, manage technical risks, and support delivery.
• Own technical outcomes from initial implementation through deployment, operation, and continuous improvement.

Skills

Java

Spring Boot

REST APIs

Distributed systems

Relational data models

CI/CD pipelines

Unit testing

Performance testing

Mentoring engineers

AI coding assistants

Education

Bachelor's degree in Computer Science or related field

Master's degree in Computer Science or Software Engineering

Tools

AWS

OpenTelemetry

Grafana

Prometheus

API Gateways

Job description

WEX Inc. is seeking a remote Staff Software Engineer to lead the Beyond Fuel and Expense Management platform within Mobility Engineering. You will shape architecture, establish practices, and drive product delivery from design to production launch.

You will guide frontend, backend, APIs, and partner integrations, mentoring engineers and aligning with Product, Security, and design teams across the US and India.