Junior Java Developer

Description

Are you ready to kick-start your engineering career on a project that truly makes an impact? We're looking for a Junior Java Developer to join a talented, international team building mission-critical systems that power the backbone of modern Data Centers — from constructing new facilities and designing racks to hardware demand planning, logistics, and ongoing maintenance. Our client is a global technology leader operating on a massive scale, where reliability, performance, and innovation are essential. You'll be contributing to a scalable, high-performance platform leveraged by external customers to build the next generation of applications and solutions — all while learning directly from world-class engineers and architects. This is a fantastic opportunity to grow your skills in a modern, self-governing engineering culture that values transparency, autonomy, and continuous learning. This role offers a hybrid model, with 3 days per week working from the client's office in Kraków, Gdansk or Wroclaw, Poland. Ready to launch your career in cloud engineering? Apply now and join our global team! Responsibilities Develop new features and refine existing code to make it more readable, efficient, and maintainable Contribute to the full development lifecycle — from analysis and design through implementation, testing, and support Collaborate directly with the client on a daily basis, building strong communication skills along the way Work alongside experienced engineers and architects on a scalable, high-performance platform Take ownership of your tasks, deliver on time, and grow into a confident, autonomous engineer Continuously learn the project domain and adopt new technologies Requirements 1+ years of experience developing and integrating software through the full system implementation lifecycle (analyze, design, implement, build, test, support) 1+ years of hands-on experience with Java Solid knowledge of JUnit, Mockito, and SQL Excellent English communication skills and confidence in client-facing interactions (you'll be talking to stakeholders directly!) Strong self-management and prioritization skills A proactive, self-starter mindset with a focus on quality and timely delivery Nice to have Experience with Google Cloud Platform (GCP) Familiarity with TypeScript Knowledge of Guice and Protocol Buffers

Requirements

• 1+ years of experience developing and integrating software through the full system implementation lifecycle (analyze, design, implement, build, test, support)

• 1+ years of hands-on experience with Java

• Solid knowledge of JUnit, Mockito, and SQL

• Excellent English communication skills and confidence in client-facing interactions (you'll be talking to stakeholders directly!)

• Strong self-management and prioritization skills

• A proactive, self-starter mindset with a focus on quality and timely delivery

Responsibilities

• Develop new features and refine existing code to make it more readable, efficient, and maintainable

• Contribute to the full development lifecycle — from analysis and design through implementation, testing, and support

• Collaborate directly with the client on a daily basis, building strong communication skills along the way

• Work alongside experienced engineers and architects on a scalable, high-performance platform

• Take ownership of your tasks, deliver on time, and grow into a confident, autonomous engineer

• Continuously learn the project domain and adopt new technologies

Seniority

• Junior

Nice to have

• Experience with Google Cloud Platform (GCP)

• Familiarity with TypeScript

• Knowledge of Guice and Protocol Buffers