Senior Java Developer/Developerka

ZdalnaPraca; Warszawa; Hybrid; PLN 210,000 - 270,000; Full time

Benefits offered by this job

Flexible cooperation model

Hybrid work setup – 1-2x/week from the

office in Warsaw

Collaborative team culture

Continuous development

Comprehensive benefits – Interpolska,,

High quality equipment

Job summary

Mindbox is seeking an experienced Senior Java Developer to join the client team and help build business systems built on microservices. You will work on designing and implementing microservices, REST APIs, and event-driven integrations while collaborating with analysts, testers, and architects.

Expect a hybrid work setup in Warsaw with 1–2 days in the office, ongoing training opportunities, and a supportive, knowledge-sharing culture that values high-quality engineering and scalable solutions.

Qualifications

• 5+ years of experience with Java
• Strong knowledge of Spring Boot
• Proven experience with microservices architecture
• Practical knowledge of REST API
• Experience with Apache Kafka or RabbitMQ
• Familiarity with Oracle or PostgreSQL
• Ability to write reliable unit tests
• Knowledge of Git, Maven, and CI/CD tools
• Good command of English and Polish to ensure effective technical communication

Responsibilities

• Develop applications using Java and Spring Boot
• Design and implement microservices
• Build and enhance REST API solutions
• Develop event-driven communication mechanisms
• Integrate applications with databases and external systems
• Create unit and integration tests
• Participate in code reviews and ensure coding best practices
• Optimize the quality and performance of solutions
• Collaborate with analysts, testers, and architects

Skills

Java

Spring Boot

Microservices

REST API

Apache Kafka

RabbitMQ

Git

Maven

CI/CD tools

English

Polish

Tools

Azure

Kubernetes

AKS

GitLab

Jenkins

Job description

At Mindbox we connect top IT talents with technology projects for leading enterprises across Europe.

We are looking for an experienced Senior Java Developer to join our client's team and contribute to the development of business systems built on microservices architecture. This role involves creating new functionalities as well as enhancing integrations between applications.

Sounds like your kind of challenge?

What you'll be doing

• Develop applications using Java and Spring Boot.
• Design and implementmicroservices.
• Build and enhanceREST API solutions.
• Developevent-driven communication mechanisms.
• Integrate applications with databases and external systems.
• Createunit and integration tests.
• Participate incode reviews and ensure coding best practices.
• Optimize thequality and performance of solutions.
• Collaborate closely with analysts, testers, and architects.

Note: Detailed project information will be shared during the recruitment process.

What you get in return

• Flexible cooperation model
• Hybrid work setup – 1-2x/week from the office in Warsaw
• Collaborative team culture – work alongside experienced professionals eager to share knowledge
• Continuous development – access to training platforms and growth opportunities
• Comprehensive benefits – including Interpolska Health Care, Multisport card, Warta Insurance, and more
• High quality equipment – laptop and essential software provided

Who we're looking for

• 5+ years of experience with Java.
• Strong knowledge of Spring Boot.
• Proven experience with microservices architecture.
• Practical knowledge of REST API.
• Experience with Apache Kafka or RabbitMQ.
• Familiarity with Oracle or PostgreSQL.
• Ability to write reliable unit tests.
• Knowledge of Git, Maven, and CI/CD tools.
• Good command of English and Polish to ensure effective technical communication.

Nice to have

• Experience with Azure.
• Knowledge of Kubernetes or AKS.
• Familiarity with GitLab or Jenkins.
• Previous experience in financial or insurance sectors.
• Hands-on work with high-availability systems.

Joining this project you’ll become part of Mindbox – a tech-driven company where consulting, engineering, and talent meet to build meaningful digital solutions. We’ll back you up every step of the way, accelerate your development, and ensure your skills make a difference.