Java Full Stack Engineer (Java + AWS / Kafka / Golang / Kotlin)
**Responsibilities**:
- Design, develop, and maintain **Java-based microservices** using Spring Boot and related frameworks.
- Implement core Java concepts including **multithreading, exception handling, collections, and OOP principles**.
- Build and maintain **RESTful APIs** following best practices.
- Develop frontend components using **React.js**, including routing, events, and asynchronous API calls.
- Implement **event-driven architectures** using **Apache Kafka**.
- Create Kafka producers and consumers to support data processing workflows.
- Develop and execute **unit tests** using **JUnit** to ensure code quality and reliability.
- Integrate services with **SQL and NoSQL databases**, including **Apache Cassandra**.
- Collaborate on debugging, code reviews, and continuous improvement initiatives.
Required Skills & Experience
- Strong experience with **Java** and **Spring Framework** (Spring Core, MVC, Boot, REST, Security, Batch).
- Experience building **microservices architectures**.
- Hands-on experience with **Apache Kafka**.
- Experience with **React.js** for frontend development.
- Knowledge of **unit testing frameworks** (JUnit).
- Experience working with **REST APIs**.
- Familiarity with **Python** and **FastAPI**.




- Understanding of **event-driven systems** and messaging patterns.
Nice to Have
- Experience with **AWS** cloud services.
- Exposure to **Golang or Kotlin**.
- Experience with **Schema Registry** and data serialization formats such as **Avro or JSON**.
- Experience building high-performance APIs using **FastAPI**.
Tech Stack
- **Backend**: Java, Spring Boot, Kafka, Python, FastAPI
- **Frontend**: React.js
- **Databases**: Apache Cassandra, SQL/NoSQL
- **Architecture**: Microservices, Event-Driven Systems
- **Cloud**: AWS (preferred)
**Job Types**: Full-time, Permanent
Pay: From $40,000.00 per month
Application Question(s):
- Can you describe a Java-based microservices system you have built or maintained, including the technologies used (Spring Boot, Kafka, databases) and your specific responsibilities?
- Tell us about your experience implementing event-driven architectures using Apache Kafka. What role did you play in designing producers, consumers, and message flows?
- This role requires working in a hybrid model in Guadalajara (2 - 3 days per week). Are you ok with this work mode?
**Language**:
- English (required)
Work Location: Hybrid remote in Pinar de la Calma, 45080 San Pedro Tlaquepaque, Jal.

📌 Java Full Stack Engineer (Pinar de la Calma)
🏢 Fixity Technologies
📍 Pinar de la Calma