Careers at Jonajo

Java Backend Developer

- Java Developer, Typescript a plus

- Experience with task orchestration systems such as Airflow

- Extensive experience building integrations with Salesforce (SFDC)

- Experience on large scale user-facing web applications

- Front end development experience a plus

- Strong in data modeling / database organization experience

- SQL and NoSQL experience

We're looking for a proactive, collaborative, positive, curious, committed, and risk-taking person.



  • Translate application storyboards and use cases into functional applications
  • Design, build and maintain efficient, reusable, and reliable Java code
  • Ensure the best possible performance, quality, and responsiveness of the applications
  • Identify bottlenecks and bugs, and devise solutions to these problems
  • Help maintain code quality, organization, and automatization



  • 4+ years of experience developing with Java.
  • BSc in Computer Science, Engineering or relevant field
  • Solid understanding of object-oriented programming
  • Familiar with various design and architectural patterns
  • Skill for writing reusable Java libraries
  • Knowledge of concurrency patterns in Java
  • Familiarity with concepts of MVC, JDBC, and RESTful
  • Should have working experience with microservices, RESTful web services
  • Experience with popular web application frameworks, such as Play and Spark
  • Familiarity with Java GUI frameworks (such as Swing, SWT, and AWT depending on project requirements)
  • Experience with task orchestration systems such as Airflow
  • Extensive experience building integrations with Salesforce (SFDC)
  • Experience in large scale user-facing web applications
  • SQL and NoSQL experience
  • Strong in data modeling/database organization experience
  • Front end development experience is a plus
  • A knack for writing clean, readable Java code
  • Experience with both external and embedded databases
  • Understanding fundamental design principles behind a scalable application
  • Basic understanding of the class loading mechanism in Java
  • Creating database schemas that represent and support business processes
  • Basic understanding of JVM, its limitations, weaknesses, and workarounds
  • Implementing automated testing platforms and unit tests
  • Proficient understanding of code versioning tools, such as Git
  • Familiarity with build tools such as Ant, Maven, and Gradle
  • Familiarity with continuous integration
  • Design, develop and test Java-based solutions using common standards and frameworks such as JAXB, JAX-WS, JAX-RS, JPA, JavaEE, Spring, and Hibernate
  • Excellent knowledge of SQL and hands-on experience with ORM frameworks such as Hibernate
  • Excellent skills in DB Schema design and SQL development
  • Maintain and update existing J2EE applications as needed
  • Experience in Spring, Struts, or equivalent J2EE framework software
  • Working knowledge and experience with JQuery, Ajax, JSON, CSS, HTML
  • Implement the product's lifecycle: Design, development, quality, deployment, and maintenance
  • Ability to solve problems creatively and effectively
  • Experience working in an Agile/Scrum development process

Job Type: Full-time

Last Updated:
August 18, 2022


English Level:
Client Facing (TOEFL 610+)
Anywhere in Mexico

Years of Experience:

Apply Here

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