Full Stack Engineer (Java + React)

Natobotics; Kraków; Hybrid; PLN 120,000 - 150,000; Full time

Job summary

A technology firm in Kraków is seeking an experienced Full Stack Engineer with strong skills in Java and React. In this role, you will design, build, and maintain applications while working with modern microservices architectures. Ideal candidates will have 5–10 years of experience in software development, specifically with Java 11+. Additionally, hands-on experience with Kubernetes and proficiency in Git are crucial. The position offers a hybrid work model with two days in the office and three days remote.

Qualifications

• 5–10 years of experience in software development.
• Strong experience with Java 11+, Java 17+ preferred.
• Hands-on experience with container orchestration tools like Kubernetes.

Responsibilities

• Build and support backend and frontend applications using Java and ReactJS.
• Develop and maintain microservices and APIs.
• Modernize legacy systems by migrating to microservices architectures.

Skills

Java 11+

Kubernetes

Git

Unix/Linux systems

RESTful APIs

Databases and SQL

Job description

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 ReactJS
• Develop and maintain microservices and APIs
• Modernize legacy systems by migrating from mainframe and IBM WebSphere to scalable microservices architectures
• Improve system efficiency by increasing Straight-Through-Processing (STP)
• Reduce testing costs through automation frameworks
• Contribute to overall system design, scalability, and performance improvements

Required Skills & Experience

• Strong experience with Java 11+ (Java 17+ preferred)
• Hands‑on experience with Kubernetes
• Proficiency in Git
• Strong command of Unix/Linux systems and CLI
• Solid understanding of RESTful APIs and microservices architecture
• Experience with Databases and SQL (Oracle Preferred)

Nice To Have

• Experience with JavaScript and React
• Exposure to DevOps environments
• Knowledge of application monitoring tools
• Familiarity with Spring / Spring Boot