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About the Team/Role
We are seeking a highly skilled Senior Java Developer to join our WEX Mobility Engineering team, focusing on building innovative SaaS and PaaS solutions to support the EV energy transition. As part of this global team, you will contribute to developing products that enable on-route charging, at-home charging, and reimbursement solutions for EV users in the US and EU, while also enhancing systems that manage credit issuance and spend controls for fleet managers.
At WEX, software engineers take ownership of delivering high-quality solutions by embracing DevOps and agile best practices. In this role, you will play a critical part in the entire software development lifecycle, from designing scalable architectures to ensuring robust deployment pipelines, empowering the team to achieve exceptional results.
Your expertise in Java and backend systems, along with your ability to collaborate across geographically distributed teams, will help drive the success and evolution of WEX Mobility products, ensuring they remain leaders in enabling sustainable and efficient fleet operations globally.
How you’ll make an impact
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Collaborate with stakeholders to understand customer challenges and design scalable backend solutions.
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Design, implement, and maintain robust REST APIs using Java and related frameworks.
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Optimize and maintain critical legacy systems while modernizing functionality and ensuring stability.
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Become a subject matter expert in your functional area and best practices.
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Analyze existing systems and processes to identify areas for improvement and scalability.
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Support live applications by implementing monitoring, ensuring rapid incident resolution, and driving continuous improvement.
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Proactively review code, foster a culture of quality, and mentor team members.
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Strengthen and drive our engineering process with TDD and BDD, Microservice, and Vertical Slice Architectures.
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Develop CI/CD pipelines and contribute to deployment automation.
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Adapt to new technologies and frameworks while navigating the challenges of working in the highly regulated payments domain.
Experience you’ll bring
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Bachelor’s degree in Computer Science or equivalent education or work experience.
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At least 5 years of experience in software engineering.
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Demonstrated understanding of core Computer Science concepts, such as object-oriented design, algorithms, data structures, problem-solving, and complexity analysis.
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Expertise in backend development, particularly with Java, Spring Boot, building and optimizing RESTful APIs, writing and tuning SQL for relational databases, and utilizing automated testing frameworks.
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Strong communication and collaboration skills, with a passion for continuous learning.
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Hands-on experience with:
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Event-driven architecture and tools like Kafka (preferred)
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Cloud deployment and containerization using Docker and Kubernetes (preferred)
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CI/CD tools like GitHub Actions or Argo CD (preferred)
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Infrastructure as Code (IaC) using tools such as Terraform (preferred)
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Knowledge of encryption schemes, API security, and compliance requirements in regulated environments. (preferred)
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Proven ability to work effectively on legacy codebases, ensuring minimal disruption while driving modernization efforts. (preferred)
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Experience with technical design documentation and tools like JIRA and Confluence. (preferred)
