Senior Full Stack Developer (Java + React)

Senior • Remote

$20,000 - $25,000/mo

Warsaw, Poland

Senior Full Stack Developer (Java + React)

📍 Location: Remote

📃 Contract type: B2B

💰 Rate: up to 25,000 PLN net + VAT / 6800 USD month

🚀 Start date: ASAP / flexible

📆 Project duration: Long-term cooperation

💼 About the Role

We're looking for an experienced Senior Full Stack Developer to join a highly agile team working on the end-to-end development of modern applications. You’ll be involved in design, architecture, coding, and DevOps, all within an Extreme Programming (XP) setup that includes remote pairing, Test-Driven Development (TDD), and continuous integration

Responsibilities:

🧩 Responsibilities

Full ownership of the software development lifecycle: architecture, implementation, and deployment.
Collaborate with a remote-first, XP-driven development team.
Build scalable, cloud-native applications using Java and React.
Design and build microservices-based architecture and RESTful APIs.
Deploy and maintain solutions using Kubernetes and CI/CD pipelines (Jenkins).
Follow TDD and BDD practices with proper testing frameworks.
Continuously improve software quality and team processes.

We are looking for:

✅ Required Skills

6+ years of experience in backend development using Java and Spring Boot / Cloud
4+ years of experience in frontend development with React (must-have)
Experience with Java Streams and functional programming concepts
Experience building Reactive UI (Reactive JS)
2+ years working in TDD/BDD (JUnit, Jasmine, Mockito, Protractor/Selenium)
Solid experience with microservices architecture
Proficiency in DevOps tools and pipelines (e.g., Jenkins, Git)
Hands-on experience with Kubernetes / Cloud Foundry
Experience designing cloud/hybrid solutions
Familiarity with microservices patterns (service discovery, circuit breaker, etc.)
Good command of English (min. B2)

➕ Nice to Have

Experience with Kotlin
Experience evaluating architecture and tech stack
Hands-on with CI/CD, cloud platforms (AWS, Azure), or container tools

RITS Professional Services

RITS Professional Services is a dynamic IT company that provides high-quality programming services to both the Polish and international markets. It is recognized as one of the fastest-growing technology companies, emphasizing quality and innovation in its solutions. The company's organizational culture is built on trust, collaboration, and continuous improvement, reflecting its commitment to fostering a supportive and progressive work environment.