
Job Overview
Location
Remote
Job Type
Full-time
Category
Machine Learning Engineer
Date Posted
March 5, 2026
Full Job Description
đź“‹ Description
- • Embark on a transformative journey as a PhD Research Intern within WEX Inc.'s dynamic and rapidly expanding AI Engineering team. This is a unique opportunity to immerse yourself in the core of our strategic vision, driving the integration of cutting-edge artificial intelligence into WEX's foundational products and business operations. You will be an integral part of a collaborative environment where innovation thrives, working hand-in-hand with dedicated stakeholders and seasoned domain experts to architect and implement groundbreaking AI platforms and solutions. Our mission is to build revolutionary products that not only enhance the experience for our customers but also actively contribute to their business growth and success. We cultivate a culture that champions continuous learning, believing that the most impactful and exceptional work emerges from a shared sense of purpose, coupled with an enjoyable and engaging atmosphere.
- • As a PhD Research Intern, you will be empowered to leverage your profound technical expertise to tackle intricate, real-world challenges that have a direct impact on our business. You are a self-driven, highly motivated researcher with an insatiable passion for applying the latest advancements in Artificial Intelligence, Machine Learning, and sophisticated software engineering principles to generate tangible and significant business value. This internship is meticulously designed as a project-based experience, ensuring you receive focused guidance and mentorship. You will be thoughtfully paired with a dedicated mentor who will support you throughout your project, which you will own from its inception through to a functional prototype. Your responsibilities will encompass a broad spectrum of activities, including:
- • Engaging in close collaboration with senior engineers, product managers, and subject matter experts to gain a deep and nuanced understanding of our customers' most pressing needs and operational challenges.
- • Applying your advanced research acumen to conceptualize, design, develop, and rigorously test novel AI and Machine Learning solutions tailored to address these identified needs.
- • Taking ownership of the development, comprehensive evaluation, and iterative refinement of AI/ML models, with a particular emphasis on Large Language Models (LLMs), to effectively resolve core business problems.
- • Conducting in-depth analyses of our existing technological platforms to pinpoint performance bottlenecks and proactively identify and propose opportunities for significant algorithmic or systems-level enhancements.
- • Acquiring invaluable hands-on experience with our robust production systems, gaining exposure to modern development workflows including Continuous Integration and Continuous Deployment (CI/CD) pipelines, specifically utilizing tools like GitHub Actions, and mastering Infrastructure as Code (IaC) principles with technologies such as Terraform.
- • Culminating your internship by presenting your insightful findings, project outcomes, and developed solutions to the AI Engineering team and key company stakeholders, showcasing the impact of your work.
- • This internship offers an unparalleled opportunity to contribute to meaningful projects, develop advanced technical skills, and gain practical experience in a leading financial technology company. You will be at the forefront of AI innovation, shaping the future of our products and services.
Skills & Technologies
Python
Java
Go
AWS
Kubernetes
Junior
Remote
Degree Required
About WEX Inc.
WEX Inc. is a global commerce platform headquartered in Portland, Maine, providing payment processing and business solutions across fleet, travel, and healthcare sectors. Founded in 1983, the company offers fuel cards, corporate payments, virtual cards, and benefits administration technology that simplifies complex transactions, enhances security, and delivers data-driven insights for businesses of all sizes. WEX serves customers in North America, South America, Asia-Pacific, and Europe, enabling efficient fleet operations, streamlined travel booking, and improved healthcare benefit management through innovative payment systems and software.



