Java Developer (with Kafka)

Tremend is looking for a Java Developer (with Kafka) to join our team of bright thinkers and doers. You’ll use your problem-solving creativity to figure out our client’s most complex and challenging problems across different industries. We are on a mission to transform the world, and you will be instrumental in shaping how we do it with your ideas, thoughts, and solutions.

Your Impact:

Design, develop, and maintain backend services using Java (Java 8 or later), Spring Boot, and a microservices-based architecture

Write high-performance, clean code with strong use of Java Collections, Maps, and Streams API

Implement functional programming concepts using lambdas and streams to simplify and optimize data processing logic

Work with Kafka as part of our messaging and event-driven systems—consume, produce, and handle messages reliably

Apply foundational multithreading concepts (e.g., basic thread management, ExecutorService) to ensure efficient concurrent processing

Use key object-oriented design patterns (e.g., Singleton, Factory, Strategy) to structure scalable and maintainable code

Build and consume RESTful APIs, and collaborate with front-end and backend teams across multiple services

Interact with both SQL and NoSQL databases, optimizing queries where necessary

Participate in code reviews, performance tuning, and continuous integration processes

Contribute to CI/CD pipelines and assist in deploying microservices in test and production environments.

Your Skills & Experience:

8+ years of hands-on Java development experience, particularly in Java 8+ with a focus on Streams API, Collections, and Maps

Proficient with Spring Boot and microservices development

Mandatory: Basic hands-on experience with Apache Kafka (e.g., writing producers/consumers, understanding topics and partitions)

Solid understanding of multithreading basics and concurrency utilities (e.g., Thread, Runnable, ExecutorService)

Strong grasp of object-oriented principles and commonly used design patterns

Experience with relational databases (e.g., PostgreSQL, MySQL) and/or NoSQL databases (e.g., MongoDB)

Familiar with CI/CD tools such as Jenkins, GitLab CI, GitHub Actions, or similar

Comfortable working in agile, distributed teams with strong collaboration and communication skills.

Set Yourself Apart With:

Experience with Kafka Streams, Schema Registry, or Kafka Connect

Familiarity with containerization tools like Docker and orchestration with Kubernetes

Exposure to reactive programming frameworks such as Spring WebFlux.

Benefits of Working Here:

Besides an exciting job in a tremendous team, here's what you can expect:

A fast-paced tech environment

Continuous growth & learning

Open feedback culture

Room for own initiative & ideas

Transparency about results & strategy

Recognition & reward for hard work

Working with a flexible schedule

Medical subscription

Meal tickets

Extra vacation days - starting with 25 vacation days

Many others perks

Tremend is the newest global software engineering hub for Publicis Sapient. For over 18 years, the company has been infusing its advanced technical expertise into complex and innovative solutions that meet today's digital transformation needs and pave the way for a better and smarter future. By joining forces with Publicis Sapient we're accelerating the impact, providing a good mix of talented engineers, technology, continuous improvement, innovation, and R&D. Here, you'll have the opportunity to unleash your potential, powering up advanced software solutions for some of the world's most iconic brands. Embrace your passion for technology, creativity, and continuous improvement, and join us in making a difference through engineering.