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Java Kafka Developer#26-00468

New YorkHybrid

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Job Description

Job Description: Java Kafka Developer

Job Title

Java Kafka Developer

Location

[City, State] / Remote / Hybrid

Employment Type

Full-time

Job Summary

We are seeking a skilled Java Kafka Developer to design, develop, and maintain high-performance, event-driven applications using Java, Apache Kafka, and Spring Boot. The ideal candidate will have experience building scalable microservices, real-time data streaming solutions, and distributed systems. You will work closely with architects, backend developers, DevOps engineers, and business stakeholders to deliver reliable, secure, and scalable event-driven applications.

Key Responsibilities

• Design, develop, and maintain Java-based event-driven applications using Apache Kafka.
• Develop producers, consumers, and stream processing applications.
• Build scalable microservices using Spring Boot and Spring Cloud.
• Design and implement Kafka topics, partitions, replication, and consumer groups.
• Integrate Kafka with databases, REST APIs, and third-party systems.
• Develop asynchronous messaging solutions for enterprise applications.
• Monitor Kafka clusters and optimize message throughput and latency.
• Troubleshoot Kafka performance issues and application bottlenecks.
• Implement fault-tolerant and highly available messaging architectures.
• Participate in code reviews, architecture discussions, and Agile ceremonies.
• Build automated unit and integration tests.
• Maintain technical documentation and operational runbooks.

Required Qualifications

• Bachelor's degree in Computer Science, Information Technology, or a related field.
• 3+ years of experience in Java development.
• Hands-on experience with Apache Kafka.
• Strong proficiency in Java (Java 8/11/17).
• Experience with Spring Boot and Spring Kafka.
• Experience developing RESTful APIs and microservices.
• Strong SQL and database knowledge.
• Familiarity with distributed systems and messaging patterns.
• Experience with Git and version control.
• Knowledge of Agile/Scrum methodologies.

Preferred Qualifications

• Experience with Kafka Streams or ksqlDB.
• Knowledge of Apache Avro and Schema Registry.
• Experience with Docker and Kubernetes.
• Familiarity with cloud platforms (AWS, Azure, or GCP).
• Experience with Redis or caching technologies.
• Knowledge of event sourcing and CQRS architecture.
• Experience with monitoring and logging tools.
• Familiarity with CI/CD pipelines.

Technical Skills

Programming Languages

• Java 8/11/17
• SQL
• Scala (Preferred)
• Python (Nice to Have)

Java Technologies

• Spring Boot
• Spring Kafka
• Spring MVC
• Spring Security
• Spring Data JPA
• Hibernate
• REST APIs
• Microservices

Apache Kafka

• Kafka Producers
• Kafka Consumers
• Kafka Streams
• Kafka Connect
• Kafka MirrorMaker
• Kafka Transactions
• Consumer Groups
• Topic Management
• Partitioning
• Replication
• Offset Management
• Exactly Once Processing (EOS)

Messaging Technologies

• Apache Kafka
• RabbitMQ
• ActiveMQ
• IBM MQ
• Amazon SQS
• Apache Pulsar (Preferred)

Serialization

• Apache Avro
• JSON
• Protobuf
• Apache Schema Registry

Databases

• PostgreSQL
• MySQL
• Oracle
• SQL Server
• MongoDB
• Cassandra
• Redis

Cloud Platforms

• AWS (MSK, EC2, S3, Lambda)
• Microsoft Azure
• Google Cloud Platform (Pub/Sub)

DevOps & CI/CD

• Docker
• Kubernetes
• Jenkins
• GitHub Actions
• Azure DevOps
• GitLab CI

Monitoring & Logging

• Prometheus
• Grafana
• ELK Stack
• Splunk
• Kafka Manager
• Confluent Control Center

Version Control

• Git
• GitHub
• GitLab
• Bitbucket

Testing

• JUnit
• Mockito
• Testcontainers
• Postman
• Rest Assured

Build Tools

• Maven
• Gradle

IDEs

• IntelliJ IDEA
• Eclipse
• Visual Studio Code

Soft Skills

• Strong analytical and problem-solving abilities.
• Excellent communication and collaboration skills.
• Ability to work independently and in a team environment.
• Strong attention to detail.
• Good organizational and time management skills.
• Ability to work in fast-paced Agile environments.

Preferred Experience

• Experience building event-driven microservices.
• Experience implementing real-time streaming applications.
• Knowledge of distributed systems and messaging architectures.
• Experience with high-volume, low-latency applications.
• Familiarity with secure messaging and authentication mechanisms.
• Experience deploying Kafka applications in cloud environments.
• Experience working in Agile/Scrum teams.

Nice to Have

• Confluent Platform
• Kafka Streams API
• ksqlDB
• Apache ZooKeeper
• Apache Camel
• Spring Cloud Stream
• Event Sourcing
• CQRS
• Debezium (CDC)
• Apache Flink
• Apache Spark Streaming
• OpenTelemetry
• SonarQube
• OAuth 2.0 / JWT Authentication
• Terraform
• Helm
• Testcontainers for Kafka Integration Testing

Experience

3–8+ Years

Notice Period

Immediate to 30 Days Preferred