Fullstack Software Engineer Intern (Undergraduate)

Public source summary from intern-list.com / Jobright.

WEX is a global commerce platform that simplifies business operations through employee benefits, business payments, and fleet and mobility solutions. The Fullstack Software Engineer Intern will build scalable full-stack applications, develop AI-driven features, and gain experience with cloud architecture, system design, and modern engineering practices while collaborating with engineers and Product Managers.

Responsibilities

Build user interfaces with React and backend services using C# / .NET, including basic database interactions and API development Prototype and deploy AI agents or LLM integrations to automate workflows and enhance product capabilities Gain hands-on exposure to high-level architecture principles, learning how microservices, APIs, and data flows connect across cloud systems Apply TDD/BDD practices, work through the full software lifecycle, and receive mentorship from senior engineers on high-availability systems

Qualifications: Currently pursuing a Bachelor's degree in Computer Science, Machine Learning, Software Engineering, or a related field, having completed at least your Sophomore year prior to the start of the internship Hands-on academic or project experience with React, C# / .NET, and SQL/NoSQL databases Foundational understanding of high-level software architecture, microservices, or RESTful system design concepts Strong problem-solving skills, adaptability, and eagerness to learn during a fast-paced internship Familiarity or interest in AI agent frameworks (e.g., LangChain, Semantic Kernel) and LLM concepts

Benefits: Mentorship Professional development Weekly learning experiences Remote, hybrid, and onsite options for flexibility Health, dental and vision insurances Retirement savings plan Paid time off Health savings account Flexible spending accounts Life insurance Disability insurance Tuition reimbursement Quarterly or annual bonus for non-sales roles, based on the applicable plan