Software Engineer 2

Portland, ME, USFull-time$96k2026-10-15 → 2026-11-10

Core

Full-stack Software Engineer II building secure, scalable payment and expense management solutions (Beyond Fuel and Expense Management) for WEX Mobility, spanning web, mobile, and partner integrations.

Role type

Senior IC full-stack software engineer

Builds

Payment workflows, expense capture, approvals, spend controls, transaction reporting, and reconciliation features for web and mobile applications

Domain

Fintech / Payments / Expense Management

Deliverable

production ML models | product features

Required skills

Java, Spring Boot, REST API design, distributed systems, cloud platforms (AWS), CI/CD pipelines, automated testing, observability, secure API design

Preferred skills

API Gateways, service mesh, OpenTelemetry, Grafana, Prometheus, web/mobile app development

Technologies

Java, Spring Boot, AWS, REST, CI/CD, OpenTelemetry, Grafana, Prometheus

Responsibilities

Design and implement full-stack features for payment and expense management; build reusable business capabilities and APIs; translate product requirements into technical designs; write production code and review contributions; implement monitoring, distributed tracing, and alerts; partner with senior engineers to manage technical risks

Seniority

Mid-Senior, hands-on IC

About wexinc

As a Sr. Staff Data Platform Engineer, you will be the primary architect and visionary for the core data infrastructure that powers the entire enterprise. This is a "platform-as-a-product" role; your mission is to build the internal foundation—creating the high-performance engines, abstraction layers, and self-service frameworks that enable hundreds of other engineers to move faster.