Software Development Engineer 2 (Java 17+)

WEX•Portland, ME

6h•Remote

About The Position

As a Software Development Engineer, you will be a key contributor to the modernization of WEX’s Digital Credit Application. You will help build the high-performance API layer that replaces our legacy Salesforce-heavy workflows. This role is perfect for a backend specialist who enjoys solving complex integration puzzles, building pluggable business logic, and ensuring that our new "modern experience" is fast, reliable, and ready for future AI-driven features.

Requirements

3–6 Years of Experience: Strong background in backend software development, preferably in high-growth Fintech or E-commerce environments.
Deep hands-on experience with Java and the Spring Ecosystem (Spring Boot, Spring Data, Spring Security).
Proven ability to build and scale RESTful services.
Experience working with AWS (Lambda, EC2, RDS) and proficiency in SQL (PostgreSQL) and NoSQL.
Practical experience with asynchronous messaging like Kafka or RabbitMQ.
Comfort with Docker, Kubernetes, Git, and Maven/Gradle.
Ability to debug complex issues across distributed systems and a passion for refactoring legacy code into clean, modular patterns.
Highly Motivated and Self-Learning: Possesses a strong desire to rapidly acquire new skills, tools, and domain knowledge with minimal supervision. Demonstrates initiative, intellectual curiosity, and an eagerness to take on new challenges.
Excellent collaboration and communication skills, comfortable asking questions and seeking guidance when needed.
Champions a positive attitude, technical curiosity, and a relentless focus on quality and continuous improvement.

Nice To Haves

Familiarity with GraphQL or gRPC is a plus.
Prior experience with Sales force experience is a plus.

Responsibilities

Develop and maintain scalable microservices using Java 17+ and Spring Boot to support new credit application journeys.
Assist in migrating business logic from Salesforce (Apex/Flows) into independent, cloud-native services without disrupting the current customer experience.
Build and document clean, developer-friendly REST APIs that power our A/B testing framework and multi-channel frontends.
Implement modular "Adjudication" components that allow for easy integration with third-party credit bureaus and risk engines.
Ensure seamless data synchronization between our new PostgreSQL databases and the Salesforce system of record using event-driven patterns.
Write "test-first" code (JUnit/Mockito) and contribute to automated CI/CD pipelines to ensure 100% confidence in every deployment.