WEX

Senior Java Software Development Engineer

Brazil · Remote (country restricted) · Full time

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About the role

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EmployerWEX
LocationBrazil
Work styleRemote (country restricted)
Employment typeFull time
Employer posted4 Sep 2026

We are seeking a Software Engineer in the WEX Transaction Systems organization. This role will be a software engineer to help develop, drive, and execute implementation in an engineering team for the WEX Transaction Systems platform applications. Transaction Systems deals with card swipe authorization and clearing txn processing for WEX’s industry-leading fuel card platform.

As a Software Engineer on our team, you will be a key contributor following best practices in developing, and maintaining our cloud-native solution and delivering best in class solutions. You'll work with a modern tech stack including containerization, Kafka event streams, core java and APIs written in Java. This is an opportunity for you to join an agile, and collaborative team that values ownership, high-quality results, and a fun working environment.

How you’ll make an impact

Develop, and implement scalable and reliable software solutions using core java, Kafka, cache and other modern technologies.

Show full description

Write clean, maintainable, and well-documented code.

Participate in code reviews and collaborate with other team members to ensure high code quality.

Troubleshoot and resolve issues in a timely and efficient manner.

Pick up new technology and switch between tech stacks with a minimum of fuss.

Stay abreast of industry best practices and emerging technologies.

Experience you’ll bring

Bachelor's degree in Computer Science, Engineering, or a related field.

Great software development experience, including experience developing and supporting cloud-based infrastructure as code.

Strong understanding of data structures and algorithms, object-oriented design, and problem-solving skills.

Experience designing, implementing, and operating cache(Redis or Valkey) solutions in cloud-based, high-throughput systems.

Experience with Docker and orchestration tools like Kubernetes for deployment.

Experience with event streaming platforms (e.g., Kafka).

Experience with cloud platforms such as AWS.

Experience with logging, metrics, and tracing tools (e.g., Grafana, Splunk) to monitor and troubleshoot live systems.

Excellent written and verbal communication skills, and a collaborative mindset.

Bonus points for

Familiarity with implementing APIs and/or gRPC services.

Experience with automated deployment pipelines.

Examples of passion projects or contributions to open-source projects.

Passion for technology and a desire to learn and grow.

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