Senior Java Developer

emagine; Poland; On-site; PLN 240,000 - 360,000; Full time

Job summary

emagine is seeking a Senior Java Developer to enhance backend architectures and deliver high-quality data-driven services across EU remote environments. The role focuses on building scalable backend systems with Kafka and modern microservices patterns.

You will contribute to CI/CD pipelines, security, observability, and collaborative guild activities, shaping robust data-driven applications for the organization.

Qualifications

• 10+ years of backend development experience.
• Expertise in Kafka and Confluent Kafka (KStreams).
• Strong Java backend development skills.
• Experience with MongoDB Atlas and PostgreSQL.
• Kafka Certification.

Responsibilities

• Building, testing, and deploying software using standard CI/CD pipelines.
• Developing microservices for data processing, database interaction, and application data exposure.
• Applying architectural patterns suitable for event-based data streaming and web services.
• Ensuring logs are created, easily understandable, integrated with the logging platform, and setting up necessary alerts.
• Testing software focusing on functionality, quality, fault tolerance, performance, and scalability.
• Integrating security features like federated authentication and role-based access control.
• Participating in a guild for backend developers to exchange knowledge and best practices across teams.

Skills

Java

Kafka (Confluent Kafka)

MongoDB Atlas

PostgreSQL

Kafka Certification

Tools

Docker

Kubernetes

ELK Stack

Job description

Project details

B2B - Long term

Full Remote (EU)

Summary

The Senior Java Developer role is focused on enhancing the software development processes within the organization, specifically targeting candidates who have substantial practical experience. The primary objective is to develop and deploy high-quality backend applications leveraging advanced technologies, particularly Kafka.

Responsibilities

• Building, testing, and deploying software using standard CI/CD pipelines.
• Developing microservices for data processing, database interaction, and application data exposure.
• Applying architectural patterns suitable for event-based data streaming and web services.
• Ensuring logs are created, easily understandable, integrated with the logging platform, and setting up necessary alerts.
• Testing software focusing on functionality, quality, fault tolerance, performance, and scalability.
• Integrating security features like federated authentication and role-based access control.
• Participating in a guild for backend developers to exchange knowledge and best practices across teams.

Key Requirements

• 10+ years of relevant experience
• Expertise in Kafka, specifically Confluent Kafka (KStreams etc.)
• Strong knowledge of Java for backend applications
• Familiarity with MongoDB Atlas and PostgreSQL
• Kafka Certification

Nice to Have

• Experience with OIDC, OAuth2, SAML for authentication
• Knowledge of Docker for containerization
• Familiarity with Kubernetes for container orchestration
• Experience with the ELK stack for logging, monitoring, and alerting