Senior Java Developer Java, Spring Boot, Apache Kafka, SQL Gdańsk

Diverse CG Sp. z o.o. Sp.k.; Województwo pomorskie; Hybrid; PLN 120,000 - 180,000; Full time

Benefits offered by this job

Private medical care

Co-financing for sports card

Dedicated consultant

Job summary

Diverse CG Sp. z o.o. Sp.k. is seeking an experienced backend developer to build and maintain server-side Java applications in the Fraud Management domain. You will work in a Scrum team, helping design scalable solutions and maintainable code, while contributing to near real-time data pipelines.

The role requires strong Java/Spring Boot, REST/SOAP, Kafka, and SQL skills, plus hands-on microservices experience and performance profiling. English fluency is essential for collaboration across teams.

Qualifications

• Strong server-side Java development experience in Fraud Management domain.
• Experience with Java, Spring Boot, and Web Services (SOAP/REST).
• Proven ability to perform profiling and performance optimization.
• Hands-on with microservices and integration patterns.
• Experience with messaging technologies, particularly Apache Kafka.
• Strong knowledge of relational databases and SQL (Oracle or similar).
• Very good command of English, both spoken and written.

Responsibilities

• Develop server-side applications within the Fraud Management domain.
• Collaborate with developers in a Scrum team.
• Contribute to solution design and maintainability of applications.
• Build and maintain near real-time data pipelines.
• Clarify requirements with Product Owners and stakeholders.
• Collaborate with engineers across teams.
• Document designs and technical solutions.

Skills

Java development

Spring Boot

Web Services (SOAP/REST)

Performance analysis

Profiling

Microservices

Apache Kafka

SQL

English proficiency

Tools

Kubernetes

Redis

AWS Lambda

Job description

Responsibilities:

• Develop server-side applications within the Fraud Management domain
• Collaborate with developers in a Scrum team
• Contribute to solution design and application maintainability
• Build and maintain near real-time data pipelines
• Clarify requirements with Product Owners and stakeholders
• Collaborate with engineers across teams
• Document designs and technical solutions

Requirements:

• Strong experience in server-side Java development, including Java, Spring Boot, and Web Services (SOAP/REST)
• Proven experience with performance analysis, profiling, and optimization
• Hands‑on experience with microservices and integration patterns
• Practical experience with messaging technologies, particularly Apache Kafka
• Strong knowledge of relational databases and SQL (Oracle or similar)
• Very good command of English, both spoken and written

Nice to have:

• Familiarity with NoSQL databases
• Experience with Redis
• Hands‑on experience with containers on Kubernetes
• Knowledge of AWS PaaS services, such as AWS Lambda

Offer:

• Private medical care
• Co-financing for the sports card
• Constant support of dedicated consultant

Personal Consulting Agency (License No. 4642)