Java Developer - CC Digital (f/m/x)

Sii Poland; Toruń; On-site; PLN 130,000 - 210,000; Full time

Benefits offered by this job

Great Place to Work

Centre of internal trainings

Profit sharing

Medical care

Comfortable and well-equipped offices

Job summary

Sii Poland is looking for an experienced Java Developer to join our Digital Competence Center in Poland. You will work on enterprise projects across finance, telco, e-commerce, manufacturing, retail, and healthcare, using Java, Spring and microservices in a modern tech stack.

Join a team with over 1500 experts, focus on quality, documentation, and continuous development. The role emphasizes collaboration, clean code, and delivering real impact in a stable environment.

Qualifications

• Minimum 5 years of commercial programming experience in Java.
• Knowledge of Spring Boot, Spring MVC and Hibernate/JPA.
• Experience with microservices architecture and tools: Docker, Kubernetes, Kafka.
• Knowledge of relational and non-relational databases (Oracle, PostgreSQL, MongoDB).
• Experience in developing and integrating web APIs (REST, GraphQL).
• Ability to apply good engineering practices: SOLID, unit testing (JUnit), code review, clean code.
• Strong communication skills, openness and teamwork.
• Very good oral and written English language skills.

Responsibilities

• Creation, implementation and testing of software using modern technologies.
• Adding new functionalities.
• Troubleshooting software problems and fixing issues.
• Preparing technical documentation.
• Ensuring code quality and adherence to programming standards in projects.
• Collaborating with team members to understand problems and solutions.
• Proposing optimization options and changes.

Skills

Java

Spring Framework

Microservices

Unit testing

Clean code

English

Tools

Docker

Kubernetes

Kafka

REST APIs

GraphQL

Job description

Sii is a place where experienced Java Developers execute global projects, working with modern technologies, microservices architecture and cloud. Our Digital Competence Center is more than 1500 experts who develop enterprise solutions for the following industries: finance, telco, e-commerce, manufacturing, retail or healthcare.

If you're looking for a stable environment, projects with real impact and opportunities for continuous development, there's a place for you at Sii. Check out what we can offer you.

Your tasks

• Creation, implementation and testing of software using modern technologies
• Adding new functionalities
• Troubleshooting software problems (troubleshooting)
• Preparing technical documentation
• Ensuring code quality and adherence to programming standards in projects
• Collaborating with other team members to better understand the problem
• Proposing new optimization options and changes

Requirements

• Minimum 5 years of commercial programming experience in Java
• Practical knowledge of Spring frameworks (Spring Boot, Spring MVC) and Hibernate/JPA
• Experience working with microservices architecture and tools: Docker, Kubernetes, Kafka
• Knowledge of relational and non-relational databases (e.g. Oracle, PostgreSQL, MongoDB)
• Experience in developing and integrating web APIs (REST, GraphQL)
• Ability to apply good engineering practices: SOLID, unit testing (JUnit), code review, clean code
• Communication skills, openness and commitment to teamwork
• Very good oral and written English language skills

Nice to have

• Cloud experience: AWS, Azure or GCP
• Knowledge of frontend technologies (e.g. Angular, React)

Job no. 260126-GW12X

Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.

Benefits For You

• Great Place to Work
• Solid financial situation
• Contracts with the biggest brands
• Centre of internal trainings
• Many experts you can learn from
• Open and accessible management team
• Profit sharing
• Passion Sponsorship program
• Regular integration events and trips
• Comfortable and well-equipped offices
• MySii app
• Medical care