Full Stack Engineer (Java + React)

N Consulting; Kraków; On-site; PLN 221,400 - 234,315; Full time

Job summary

A technology consulting firm is seeking a Full Stack Engineer (Java + React) to work in Kraków, Poland. In this role, you will design and maintain modern applications, develop microservices, and contribute to system modernization efforts. Ideal candidates should have 5–10 years of experience in full stack development with strong Java and React proficiency. This position offers a mix of remote work and office-based collaboration, ensuring flexibility and a dynamic working environment.

Qualifications

• 5–10 years of experience in software development, focusing on full stack engineering.
• Proven capability in building and maintaining modern applications using Java and React.

Responsibilities

• Design and implement both frontend and backend applications using Java and React.
• Develop and maintain microservices and APIs for system modernization.
• Contribute to performance improvements and efficiency enhancements through automation.

Skills

Java 11+

Kubernetes

Git

Unix/Linux systems

Databases and SQL

RESTful APIs

Tools

Spring / Spring Boot

Job description

LocationKrakow, Poland# Full Stack Engineer (Java + React) at N Consulting LtdLocationKrakow, PolandSalaryzł1200 - zł1270 /dayJob TypeContractDate PostedMarch 25th, 2026Apply Now**Job Title: Full Stack Engineer (Java + React)****Location: Kraków, Poland (2 days office / 3 days remote)****Experience: 5–10 years****Role Overview**We are looking for a skilled Full Stack Engineer to design, build, and maintain modern applications and services. This role involves working across both backend and frontend technologies, contributing to system modernization, and improving efficiency through automation and microservices.**Key Responsibilities :**Build and support backend and frontend applications using Java (11/17/21) and ReactJSDevelop and maintain microservices and APIsModernize legacy systems by migrating from mainframe and IBM WebSphere to scalable microservices architecturesImprove system efficiency by increasing Straight-Through-Processing (STP)Reduce testing costs through automation frameworksContribute to overall system design, scalability, and performance improvements**Required Skills & Experience :**Strong experience with Java 11+ (Java 17+ preferred)Hands-on experience with KubernetesProficiency in GitStrong command of Unix/Linux systems and CLIExperience with databases and SQL (Oracle preferred)Solid understanding of RESTful APIs and microservices architecture**Nice to Have :**Experience with JavaScript and ReactExposure to DevOps environmentsKnowledge of application monitoring toolsFamiliarity with Spring / Spring Boot