Backend Software Engineer Intern - Java & AI

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    WEX

    5,001-10,000 employeesFounded 1983Portland, MaineSoftware Development
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    Best applied by Oct 12

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    About the role#

    As a Backend Software Engineer Intern, you will join the WEX technology team to build software solutions that address complex business challenges. You will work alongside senior engineers to design and ship features, contributing directly to our platforms for employee benefits, business payments, and fleet mobility. This is a 13-week paid internship program.

    What you'll do#

    • Build scalable backend services using Java and Spring Boot.
    • Develop full-stack and mobile system components.
    • Design PostgreSQL schemas and optimize database queries.
    • Deploy resilient microservices on AWS cloud infrastructure.
    • Construct AI agents and automate workflows to improve project delivery.
    • Write and maintain thoroughly tested code.
    • Partner with senior engineers to apply software design best practices.

    What you'll need#

    • Current enrollment in a Master's degree program for Computer Science, Software Engineering, or a related field.
    • Strong proficiency in Data Structures and Algorithms.
    • Hands-on experience with Java, Spring Boot, and PostgreSQL.
    • Familiarity with AWS cloud infrastructure and mobile application development concepts.
    • Practical experience building AI agents and using modern AI tools.
    • Strong analytical problem-solving skills and a collaborative mindset.

    Location & details#

    • Term: Summer 2027
    • Work Modality: Remote
    • Employment Type: Full-time
    Relevant fieldsComputer ScienceOther

    About WEX

    WEX is a public company founded in 1983 that provides a global commerce platform. It focuses on payment solutions for fleet, travel, and healthcare industries. The company employs over 5,000 people and maintains its headquarters in Portland, Maine. Its services include corporate payment technology and benefits administration.

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