Principal Software Engineer (Java&React)

Java

Principal Software Engineer (Java&React)

Java
-, Kraków +1 Location

SNI

Job offers SNI
B2B Contract
B2B
Senior
Hybrid
42,93 - 45,62 USDNet per hour - B2B

Job description

SNI is serving as a trusted IT Outsourcing partner in line with the needs of World's most prestigious firms and carried out successful projects worldwide.

Responsibilities:

  • Architect, design, and deliver enterprise-grade microservices and data streaming applications using Java, Spring Boot, Kafka, and Azure.

  • Develop scalable fullstack components using React and TypeScript to integrate backend services with modern user interfaces.

  • Implement business workflow automation using Flowable, ORM frameworks (JPA/iBatis), and relational databases alongside Redis and CosmosDB.

  • Design and enforce enterprise security protocols across services using OAuth and Azure AD (Entra ID).

  • Drive cloud-native containerized deployments using Docker, Kubernetes, Maven/Gradle, and automated CI/CD pipelines in Azure.

  • Lead AI-assisted software development practices to accelerate code generation, refactoring, and automated testing across Agile engineering teams.

Skills:

  • 15+ years of hands-on software development experience with Java.

  • Spring ecosystem (Core, Spring Boot) and relational databases (e.g., PostgreSQL).

  • Fullstack development capabilities using TypeScript and React.

  • Microservices, data streaming, and messaging architectures using Kafka and REST APIs.

  • NoSQL, cache, and workflow technologies, including Redis, CosmosDB, and Flowable.

  • Cloud, containerization, and build tooling covering Azure, Docker, Kubernetes, Maven, and Gradle.

  • Enterprise identity and security architectures involving Azure AD and OAuth.

  • Modern AI-assisted development tooling and workflows within Agile methodologies.

Tech stack

    Java

    master

    React

    master

    Spring Boot

    master

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