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WEX

PhD Intern – AI/ML/NLP Engineer

WEX

PhD Intern collaborating on AI/ML projects to address business challenges at WEX. Gaining hands-on experience in innovative AI platforms and solutions.

Posted 6/10/2026internshipRemote • 🇺🇸 United StatesEntry Level💰 $35 - $43 per hourWebsite

Tech Stack

Tools & technologies
JavaPythonTerraform

About the role

Key responsibilities & impact
  • Apply your deep technical expertise to solve complex, real-world problems.
  • Collaborate with senior engineers, product managers, and domain experts to understand our customers' needs and challenges.
  • Apply your research skills to design, code, and test novel AI/ML solutions.
  • Develop, evaluate, and iterate on AI/ML models (including LLMs) to solve a core business problem.
  • Analyze existing platforms to identify bottlenecks and propose opportunities for algorithmic or systems-level improvements.
  • Gain hands-on experience with our production systems, including CI/CD pipelines (GitHub Actions) and Infrastructure as Code (Terraform).
  • Present your findings and project outcomes to the team and key stakeholders at the end of your internship.

Requirements

What you’ll need
  • Currently enrolled in a PhD program in Computer Science, Artificial Intelligence, Machine Learning, Statistics, or a related quantitative field.
  • Demonstrated research experience in AI, Machine Learning, Deep Learning, or Generative AI (e.g., publications, conference papers, or significant project work).
  • Strong programming skills in at least one of our core languages: Python, Java, C#, or GoLang.
  • Deep understanding of modern ML algorithms, platforms, and packages (including deep learning and LLMs).
  • Solid grasp of probability and statistics concepts (e.g., distributions, Bayesian inference, maximum likelihood estimation).
  • A collaborative mindset and strong communication skills, with an ability to translate complex research into practical applications.
  • Evidence of innovative problem-solving and a drive to learn and excel.

Benefits

Comp & perks
  • health, dental and vision insurances
  • retirement savings plan
  • paid time off
  • health savings account
  • flexible spending accounts
  • life insurance
  • disability insurance
  • tuition reimbursement

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools
AIMachine LearningDeep LearningGenerative AIPythonJavaC#GoLangprobabilitystatistics
Soft Skills
collaborative mindsetstrong communication skillsinnovative problem-solvingdrive to learnability to translate complex research