At Spin, we drive financial inclusion in Mexico by bridging OXXO’s massive physical footprint (+24,000 stores) with the digital ecosystem. Within our umbrella, NetPay serves as the B2B payment aggregator empowering businesses to scale through terminal solutions, acquirance technology, and seamless integrations. We build high-availability transaction engines that keep Mexican commerce moving every single day.

Objective of the Role

As a Software Engineer Backend, you will be responsible for developing, maintaining, and scaling high-performance microservices and RESTful APIs. You will collaborate closely with cross-functional engineering teams to write clean, secure, and testable code within agile frameworks. This role is designed for an ambitious early-career engineer looking to deepen their technical foundation in core backend architecture and learn alongside experienced team members.

Collaborate and work on small-scale components, including tools and microservices applications. Participate in the development and testing of successful software solutions within defined boundaries and resolve straightforward technical issues. Work collaboratively with other team members to design, develop, test, and deploy code, applying software engineering principles and using relevant technologies and tools for the project. The role involves actively participating in the software development lifecycle, from conception and design to delivery and maintenance. This role is designed to help you grow professionally by providing opportunities to work on diverse projects and learn from experienced team members.

Main Responsibilities
• Assist in software solutions.
• Document code and comply with current regulations and procedures.
• Develop and maintain APIs.
• Work with Architecture, Data Management, and DevOps through agile sprints to promote continuous development releases.
• Debug and handle basic errors.
• Gather and document functional and non-functional requirements in JIRA stories for projects and technical improvements.
• Collaborate closely with other technical and business teams to understand and translate requirements into technical solutions.
• Define clear acceptance criteria before development.
• Write unit tests to verify code.
• Perform integration tests to verify joint functionality.
• Test product usability and accessibility.
• Maintain updated documentation on architectures, procedures, and operational tools.
• Collaborate on testing.
• Develop tools and scripts to automate operational tasks.
• Follow data architecture guidelines on how to collect and store information.
• Generate and deliver design documentation and information availability to the data team.
• Promote an autonomous work culture by encouraging self-management, accountability, and proactive problem-solving among team members.
• Serve as a Spin Culture Ambassador to foster and maintain a positive, inclusive, and dynamic work environment that aligns with the company's values and culture.

Required Knowledge and Experience
• Knowledge of SQL and NoSQL (MongoDB, PostgreSQL, MySQL).
• Use of tools like Maven, Gradle, GitHub Actions, Sonar Cloud.
• Practice in Scrum and Jira management.
• Knowledge in microservices development and consumption of REST services, RESTful APIs.
• Use of Git.
• Clean coding practices and file organization.
• Knowledge of unit testing.
• Effective communication and collaboration skills.
• Willingness to acquire knowledge in new technologies within Spin's tech stack.

Java:
• Knowledge of Java development in a team environment.
• Knowledge of Java, Spring Boot, Hibernate.
• Knowledge of JUnit and Mockito.

.Net:
• Knowledge of .NET, .NET Core, and C# development in a team environment.
• Knowledge of NUnit or MSTest.

Location: Monterrey, N.L., Mexico (Hybrid)

Experience: 2–3 years in Backend Software Development

Tech Stack: Java, Spring Boot, Microservices, REST APIs, SQL/NoSQL