Java developer

About the company:

Quertum, is a pan-European team of professional services experts and solutions providers.

We have offices in Helsinki and London, as well as our core hub and Centre of Excellence in Warsaw.

We deliver personalized, connected and compliant omni-channel experiences for our customers through the Europe.

We are freaky on technology, but serious on people. You will love to work with us.

Visit us at www.quertum.net.

Who we are looking for:

A talented and experienced mid-level Java Developer who is passionate about building scalable and secure systems in a collaborative, international environment. We are driven, ambitious, targeted and have a high delivery capacity, in addition, we always make sure to have fun together and offer a lovely community.

As a Java Developer, you will be working for an important customer from Sweden within a skilled team of five, focusing on payment solutions with an emphasis on the backend. This role requires a deep understanding of Java-based architectures, particularly in authentication (OAuth2, JWT) within an OpenShift environment.

Key Responsibilities:

• Developing and further enhancing key payment solutions characterized by high levels of security, performance, and scalability.
• Designing and optimizing systems based on microservices and data in an OpenShift environment.
• Working with Java (Spring Boot), and databases such as MongoDB and PostgreSQL.
• Implementing security solutions (OAuth2, JWT) and improving performance.
• Creating robust CI/CD processes and implementing DevOps principles.

Our requirements:

• Programming Languages: Proficiency in Java
• Frameworks: Strong experience with Spring Boot
• Environment: Experience with OpenShift, Docker, Git
• Database: SQL and relational databases, preferably MongoDB and PostgreSQL
• DevOps: Basic knowledge of CI/CD processes
• Soft Skills: Strong verbal and written communication skills in English, along with a self-driven and results-oriented approach
• Development Best Practices: Familiarity with software development best practices, including agile methodologies and version control systems.

What we offer:

Creative environment with experienced colleagues where you as agile teams take great responsibility and make joint decisions.

A flexible workplace where we care about openness, good dialogues and each other. The services you will work with are communication-oriented services that enable communication within the B2B and B2C segments. You will face technical challenges that are both stimulating and instructive.

Additionally to above:

• Contract of Employment or B2B
• Flexible working hours 
• Working at home office or in our Warsaw office
• Multisport card
• Additional healthcare package
• Active career planning & individual training opportunities
• State-of-the-art IT equipment with options and equipment for your home office