Software Development Engineer 4

WEX•Washington, DC

About The Position

The WEX Fleet Services team is dedicated to building modern API interfaces for WEX’s industry-leading fuel card platform, creating APIs for both internal and external customers to open up new opportunities. They are seeking engineers passionate about innovative solutions, collaboration, and making a meaningful business impact. As a Software Development Engineer on this team, you will be a key contributor in designing, developing, and maintaining their cloud-native solution. The role involves working with a modern tech stack including containerization, Kafka event streams, ElasticSearch, and APIs written in Java. This is an opportunity to join an agile, collaborative team that values ownership, high-quality results, and a fun working environment.

Requirements

Bachelor's degree in Computer Science, Engineering, or a related field.
5-7 years of software development experience, including experience developing and supporting cloud-based infrastructure as code.
Strongly proficient with event streaming platforms (e.g., Kafka).
Expertise in Elasticsearch, including query optimization, indexing, and data analysis.
Experience with cloud platforms such as AWS.
Excellent problem-solving and analytical skills.
Strong communication and interpersonal skills.

Nice To Haves

Master’s degree in computer science or software engineering.
8 years of experience in software engineering.
Experience with event-driven architecture and tools like Kafka.
Experience working on card payments
Familiarity with cloud-native architecture (containerization using tools such as Docker and Kubernetes).
Awareness of API security and PCI DSS compliance requirements
Ability to work on existing codebase, contribute improvements, and adapt to legacy systems’ constraints.
Strong understanding of data structures and algorithms, object-oriented design, and problem-solving skills.
Expertise in designing and developing internet-scale services with scalability, availability, security, and reliability design tenets.
Excellent written and verbal communication skills, and a collaborative and empathetic mindset.
Proficiency in backend development, with proficiency expertise in Java or C#, and frameworks like Spring Boot, building and optimizing RESTful APIs, ODATA framework, and SQL

Responsibilities

Design, develop, and implement scalable and reliable software solutions using Kafka, ElasticSearch, and other modern technologies.
Contribute to the architecture and design of our cloud-native infrastructure.
Write clean, maintainable, and well-documented code.
Participate in code reviews and collaborate with other team members to ensure high code quality.
Troubleshoot and resolve issues in a timely and efficient manner.
Pick up new technology and switch between tech stacks with a minimum of fuss.
Stay abreast of industry best practices and emerging technologies.