Job Description

🚀 Java Full Stack Developer (Maternity Cover)

Location: Poland - Hybrid (Kraków)
Contract: B2B, Full-Time

Join the Future of Digital Tech with Kolomolo

At Kolomolo, we don’t just follow trends - we set them. As a global supplier of IT services and digital modernization solutions, we help businesses embrace cutting-edge technology to optimize their operations. Now, we are growing and looking for fresh talent to grow with us.

Are you proactive, tech-savvy, and eager to build your career in IT? This role could be your perfect fit.

About the Role

Kolomolo is looking for a Java Full Stack Developer to join an international project team delivering modern digital services for a large-scale, enterprise environment. This is a maternity cover position, offering the opportunity to work on high-impact systems, collaborate with senior engineers, and contribute to the development and maintenance of scalable applications.

You will be working on a platform responsible for exchanging operational data between our product and external government systems. The solution enables:

• Two-way data synchronization (both manual and automated)

• Visibility into pending work items

• Access to historical records

• Validation of both system-generated and manually entered data

This is a full-stack role with a strong focus on Java, offering the opportunity to work across the entire application and contribute to its evolution.

You will be involved in both backend and frontend development, working within a cloud-based architecture and Agile delivery model.

What You’ll Be Doing

• Designing, building, and maintaining application services and APIs using Java (Spring Boot)

• Developing and enhancing data synchronization processes and system integrations

• Extending and maintaining existing application components

• Ensuring performance, scalability, and reliability of the system

• Contributing to CI/CD pipelines and deployment processes

• Writing and maintaining automated tests (unit and integration)

• Collaborating across the application stack to deliver cohesive solutions

Tech Stack

• Java Expert

• Frontend: JavaScript / TypeScript, React (or similar)

• Backend: Java, Node.js,

• Cloud: AWS (preferred)

• Architecture: Microservices

• Tools: Git, CI/CD pipelines, modern testing frameworks

What We Are Looking For

• 3+ years of experience as a Full Stack Developer.

• Strong proficiency in Java.

• Experience with REST APIs and microservices architecture.

• Experience with relational databases (e.g., PostgreSQL)

• Familiarity with CI/CD pipelines (e.g., GitLab CI)

• Experience with event-driven systems or messaging solutions

• Strong grasp of software design, scalability, and performance principles

• Experience with Node.js on the backend.

• Experience with modern frontend frameworks (e.g., React).

• Understanding of REST APIs and web services.

• Familiarity with cloud environments (AWS preferred).

• Experience working in Agile/Scrum teams.

• Strong problem-solving skills and attention to detail.

• Good communication skills in an international environment.

Nice to Have

• Experience with serverless architecture

• Knowledge of microservices-based systems

• Experience with automated testing (unit/integration)

• Exposure to DevOps practices and CI/CD

What is in It for You

• Competitive salary and benefits.

• Career development opportunities in a growing tech company.

• Continuous learning culture: mentorship, internal training, and certifications.

• Flexible, agile work environment (remote, hybrid, or on-site in Kraków).

• Office perks: great coffee, tea, fresh fruit, snacks, and a fun atmosphere.

• Flat management structure, where your voice matters.

• Regular team events and a social, supportive work culture.

• B2B contract or Contract of Mandate (Umowa Zlecenie).

🌟 Why Join Kolomolo?

At Kolomolo, we prioritize innovation, agility, and autonomy. Our teams have the freedom to own their work, share ideas, and make meaningful contributions. Inspired by Scandinavian values, we believe in work-life harmony and creating an inclusive culture where everyone thrives.

You will be part of a passionate, skilled, and friendly team that works hard and celebrates together. Here, you can build your career on your own terms, with opportunities to grow, learn, and make a real impact.

Our Flat Structure & The Culture of Inclusion

At Kolomolo, we break the corporate mold. We offer:

• Agile Teams & Autonomy No micromanagement. You’ll own your projects and enjoy the freedom to innovate.

• Work-Life Harmony Inspired by Scandinavian values, we prioritize balance and flexibility, where remote work and asynchronous collaboration are in our DNA.

• Learning & Growth Continuous learning is at our core. We reward hard work, value smart ideas, and foster an environment of mutual respect and trust.

• Inclusive Culture We believe in DEI: diversity, equity and inclusion. We are committed to creating an environment where every individual, regardless of background, identity, or experience feels valued, respected, and empowered to thrive.

Join Kolomolo and elevate your career with cutting-edge technology, a supportive team, and a company that truly values your input.

Ready for the next step? Apply now and start an exciting journey of growth and innovation with us!