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Mid. Full Stack Engineer

Job Overview

Location

Indiana, USA

Job Type

Full-time

Category

Full-Stack Engineer

Date Posted

March 10, 2026

Full Job Description

📋 Description

  • • Join WEX Inc. as a Mid-Level Full Stack Engineer and become an integral part of a dynamic team dedicated to crafting innovative solutions within the payments and benefits sector. This role is perfect for engineers who thrive on building scalable, secure, and high-performance applications, and who are eager to make a tangible impact on our business.
  • • As a Full Stack Engineer, you will be at the forefront of software development, contributing to the entire lifecycle of our applications. Your primary responsibility will be to write clean, maintainable, testable, and well-documented code, ensuring the robustness and longevity of our systems.
  • • You will actively participate in rigorous code reviews, fostering a collaborative environment where knowledge sharing and continuous improvement are paramount. This collaborative spirit is key to maintaining our high standards of code quality and technical excellence.
  • • A critical aspect of this role involves proactively troubleshooting and resolving complex issues. You will be expected to diagnose problems efficiently and implement effective solutions, minimizing downtime and ensuring seamless user experiences.
  • • We value adaptability and a forward-thinking mindset. You will have the opportunity to embrace new technologies and seamlessly transition between different tech stacks, demonstrating a commitment to continuous learning and staying at the forefront of technological advancements.
  • • Staying abreast of industry best practices and emerging technologies is not just encouraged, it's essential. You will be expected to research, evaluate, and potentially integrate new tools and methodologies to enhance our development processes and product offerings.
  • • Your contributions will directly influence the development of cutting-edge payment and benefits solutions, impacting a wide range of users and stakeholders. You will work on features that enhance security, improve performance, and drive business growth.
  • • This role offers a unique opportunity to work with a diverse technology stack, including robust backend frameworks and potentially modern frontend technologies. You will gain hands-on experience with cloud platforms, database technologies, and architectural patterns like microservices.
  • • You will be instrumental in building and maintaining automated unit and integration tests, ensuring the reliability and stability of our software. This focus on testing is fundamental to delivering high-quality, dependable products.
  • • Collaboration extends beyond code reviews; you will work closely with product managers, designers, and other engineers to understand requirements, brainstorm solutions, and deliver exceptional products that meet user needs and business objectives.
  • • The remote nature of this position, based in Sao Paulo, Brazil, allows for flexibility while maintaining strong team cohesion and communication. You will be part of a global team, contributing to projects that have a significant reach.
  • • You will contribute to the design and implementation of scalable and resilient systems, leveraging your understanding of object-oriented programming principles to create efficient and maintainable software.
  • • Exposure to various database technologies, including SQL and NoSQL (MongoDB), will be a part of your daily work, requiring you to understand database design principles and optimize data interactions.
  • • You will be involved in discussions and implementations related to microservices architecture, understanding the benefits and challenges of distributed systems.
  • • The role encourages proactive engagement in identifying areas for improvement within our development processes and technology stack, fostering a culture of innovation and continuous optimization.
  • • You will play a part in ensuring the security and integrity of our applications, a critical focus in the payments and benefits industry.
  • • This position is ideal for a motivated engineer who is eager to grow their skills, take on new challenges, and contribute to a company that values innovation and employee development.
  • • You will be empowered to take ownership of your work, from conception to deployment, and see the direct impact of your efforts on WEX's success.
  • • The opportunity to work with technologies like Python and Fast API, alongside established .NET Core and C#, provides a rich learning environment and broadens your full-stack capabilities.
  • • You will contribute to a culture of technical excellence, where learning, sharing, and collaboration are actively encouraged and rewarded.
  • • Your work will directly support WEX's mission to provide innovative financial solutions, making a real difference in how businesses manage payments and benefits.

Skills & Technologies

Python
Angular
MongoDB
AWS
Azure
Full Stack
Mid-level
Remote

Ready to Apply?

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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.

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