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Integral Solutions - Data & AI

Java Fullstack Developer

Integral Solutions - Data & AI
Poland · Full-time · Not Applicable

Job title: Java Fullstack Developer

Location: Poland

Work mode: Remote

Type of cooperation: B2B Contract

Salary range: 40-60/h USD netto + Vat

About The Company/project

We are looking for an exceptional Senior Software Developer with a passion for coding who is not afraid to seek new solutions.

We offer cooperation with a unique client who provides opportunities for development in many complex and global supply chain projects.

You will join a new IT Hub, where you will encounter only new technologies and projects related to the creation of new functionalities.

Responsibilities

Responsibilities:

  • Full-stack development of innovative applications with Java, Spring, React, and modern JS frameworks.
  • End-to-end ownership of the development lifecycle: design, architecture, coding, testing, deployment, and DevOps.
  • Build and maintain microservices architectures and reactive UIs.
  • Apply TDD/BDD practices with JUnit, Mockito, Jasmine, Selenium/Protractor.
  • Contribute to CI/CD pipelines and deployments on Kubernetes / Cloud Foundry.
  • Design and deliver cloud/hybrid solutions with high scalability and reliability.
  • Work in XP practices, including remote pair programming and continuous delivery.

You Are An Ideal Candidate If You Have

  • BSc in Software Engineering or BS degree in Computer Science.
  • 8+ years of experience in the following technologies: Java (must have), Spring.
  • 2+ years of experience with Python -MUST
  • 2+ years of experience in FE, mainly React (MUST), and other modern JavaScript Framework/libraries.
  • Work in XP practices, including remote pair programming and continuous delivery.
  • Experience with Functional Programming and Java Streams.
  • Experience with developing a reactive UI (Reactive JS).
  • 2+ years of experience in TDD/BDD development in the following frameworks: Junit, Jasmin, Mockito, Protractor/Selenium
  • 3+ years of experience in micro-services-based architecture and tools (Spring Boot/Cloud)
  • Experience in DevOps development and Jenkins.
  • Experience in designing, developing, and deploying cloud/hybrid-based solutions.
  • Experience in developing and deploying in Container based environments (Kubernetes, Cloud foundry).
  • Familiarity with the following design concepts: micro-services, service discovery, circuit breaker.
  • Self-starter with the ability to appropriately priorities and plan complex work in a rapidly changing environment.
  • Versatility and capability to switch easily between different tasks and technologies.
  • Experience in assessing a broad range of information solutions and products.
  • Strong critical thinker with problem solving aptitude.
  • Fluent English - verbal and written.

Nice To Have

  • Experience with LLMs/AI/Prompt Engineering/MCP.
  • Experience with Data Analytics – big advantage.
  • Experience in development in Kotlin – big advantage.

What We Offer

  • Experience with LLMs/AI/Prompt Engineering/MCP.
  • Experience with Data Analytics – big advantage.
  • Experience in development in Kotlin – big advantage.

Key Skills

Ranked by relevance

java kubernetes kotlin react cloud junit functional programming microservices javascript python devops cicd ui
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Posted
Apr 17, 2026
Type
Full-time
Level
Not Applicable
Location
Warsaw

Industries

IT Services IT Consulting

Categories

Engineering Information Technology

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