Middle Java Developer, Mexico City

Description

Job Summary: We are seeking a Middle Java Developer to build robust and scalable backend solutions within a high-performance team focused on critical platforms in the financial sector. Key Highlights: 1. Build robust and scalable backend solutions 2. Work in a high-performance team 3. Focus on critical financial sector platforms *At AppWhere, we are looking for a passionate Middle Java Developer committed to building robust, secure, and scalable backend solutions. You will join a high-performance team focused on critical platforms in the Mexican financial sector, where we apply development best practices, Shift-Left security, and continuous delivery.* **REQUIREMENTS** * 3–5 years of proven backend development experience with Java * Bachelor’s degree or engineering degree in Computer Science, Systems Engineering, or related field (graduated or final-year student) * Practical experience with **Java 11 or later** (Java 17 or 21 LTS preferred) * Proficiency in **Spring Boot 2.7 / 3.x** (Spring Data, Spring Security, Spring MVC) * Design and consumption of documented REST APIs using OpenAPI / Swagger * Experience with relational databases (PostgreSQL, MySQL, or SQL Server) * Version control with Git (GitFlow, Pull Requests, code reviews) * Intermediate technical English (documentation reading) **RESPONSIBILITIES** * Design, develop, and maintain Java / Spring Boot backend services and microservices * Build and integrate secure, well-documented, high-performance REST APIs * Write unit and integration tests (JUnit 5, Mockito) * Actively participate in code reviews and apply best practices (Clean Code, SOLID) * Collaborate with QA, DevOps, Architecture, and Product teams throughout the software lifecycle * Diagnose and resolve production incidents * Support technical documentation and project data dictionary **TECHNICAL SKILLS (MANDATORY)** * **Language:** Java 11 / 17 / 21 * **Framework:** Spring Boot, Spring Data JPA, Spring Security * **APIs:** REST + OpenAPI / Swagger * **Databases:** PostgreSQL, MySQL, or SQL Server * **ORM:** Hibernate / JPA * **Version Control:** Git (GitFlow or Trunk-Based Development) * **Build Tools:** Maven or Gradle * **Testing:** JUnit 5, Mockito * **Operating System:** Basic Linux and command line **SOFT SKILLS** * Teamwork and close collaboration with technical and business disciplines * Clear communication—both technical and non-technical * Results- and quality-oriented mindset * Self-management, commitment, and accountability for deliverables * Analytical thinking and ability to solve complex problems * Openness to feedback and continuous improvement culture * Proactivity and curiosity to learn new technologies **DESIRABLE (PLUS)** * **Architecture:** Microservices and patterns (CQRS, Outbox, Saga) * **Containers:** Docker and Kubernetes (GKE, EKS, or AKS) * **Public Cloud:** GCP, AWS, or Azure * **CI/CD:** GitHub Actions, Jenkins, or GitLab CI * **Code Quality:** SonarQube / SonarCloud, JaCoCo * **Messaging:** Kafka, RabbitMQ, or Google Pub/Sub * **Caching:** Redis * **Security:** OAuth2, JWT, OWASP Top 10, Shift-Left practices * **Agile Methodologies:** Scrum, Kanban, Flow Engineering * **Industry:** Prior experience in banking, insurance, or fintech **WE OFFER:** * Competitive salary based on experience * Statutory benefits * Additional benefits beyond statutory requirements (after the 3-month probation period) * Immediate hiring **WORK SCHEDULE:** Monday to Friday, 9:00 AM – 7:00 PM, with a 2-hour lunch break from 2:00 PM to 4:00 PM (availability for extended hours required) ***Hybrid Position — Escandón Neighborhood, Miguel Hidalgo*** Salary: $25,000.00 – $30,000.00 per month Application Questions: * Have you worked with Spring Boot in production projects? * Which Java versions have you used professionally? * Do you have experience developing REST APIs? * Are you available to work in a hybrid model? Escandón Neighborhood * What are your salary expectations? Net monthly salary Experience: * Java Development: 3 years (Mandatory) Work Location: Hybrid remote in 11800, Escandón II Sección, CDMX