Staff Software Engineer: AI-Driven Fintech Platform Architect

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

Benefits offered by this job

Health, dental and vision insurance

Retirement savings plan

Paid time off

Job summary

WEX is seeking a Staff Software Engineer to architect and lead the migration of the Digital Credit Application from a legacy monolith to a scalable microservices platform. You will drive API-first design, modular adjudication, and AI-enabled development practices in a high-impact fintech environment.

You will own the technical strategy, mentor engineers, and ensure robust CI/CD and observability. Expect collaboration with Salesforce integrations and data science partners to optimize data

Qualifications

• 10+ years in backend architecture, especially Fintech, Lending or Credit systems.
• Expert in Java 17/21, Spring Boot 3.x, Spring Cloud.
• Experience migrating monoliths to cloud microservices (AWS) and building modular adjudication layers.

Responsibilities

• Lead architectural migration from legacy monolith to microservices in a cloud-native Java/Spring ecosystem.
• Design API-first, versioned REST/gRPC interfaces for multi-channel experiences.
• Enable AI-readiness with tooling to accelerate development and testing.

Skills

Java

Spring Boot

Microservices

AWS

CI/CD

OpenTelemetry

Kafka

Education

Bachelor’s degree in Computer Science or related field

Tools

OpenTelemetry

GitHub Copilot

Job description

WEX is seeking a Staff Software Engineer to architect and lead the migration of the Digital Credit Application from a legacy monolith to a scalable microservices platform. You will drive API-first design, modular adjudication, and AI-enabled development practices in a high-impact fintech environment.

You will own the technical strategy, mentor engineers, and ensure robust CI/CD and observability. Expect collaboration with Salesforce integrations and data science partners to optimize data