Senior Fullstack Engineer (Java & React) - Hybrid/Remote

Inetum; Województwo mazowieckie; Hybrid; PLN 201,000 - 312,000; Full time

Benefits offered by this job

Cafeteria benefits

Referral bonuses up to PLN6,000

Revenue sharing opportunities for new-

Mentoring and training by Team Manager

Job summary

Inetum Polska is seeking a Senior Fullstack Software Engineer (Java & React) to join a team developing a large-scale digital commerce platform based on microservices and micro-frontends.

You will work end-to-end with Java 25, Spring Boot 4, Spring WebFlux, React, TypeScript and Kubernetes, building new features, integrating backend services and helping modernize the existing platform through legacy migration and technical debt reduction.

Qualifications

• Proven experience building modern web apps with backend and frontend.
• Strong Java 8+ and Spring Boot knowledge, REST design.
• Proficient in React/TypeScript, HTML, and NPM.

Responsibilities

• Develop distributed online platform based on microservices.
• Own features end-to-end across backend and frontend.
• Build backend services with Java/Spring Boot and REST APIs.
• Develop frontend with React/TypeScript/JavaScript/HTML.
• Migrate legacy apps to modern architecture.
• Refactor codebase and reduce technical debt.

Skills

Java

Spring Boot

REST APIs

Reactive programming

React

TypeScript

JavaScript

HTML

NPM

Kubernetes

Docker

AI coding

Git

JUnit

Mockito

WireMock

Polish (written)

English (written)

Tools

GitHub Copilot

OpenCode

Coding agents

Job description

Inetum Polska is seeking a Senior Fullstack Software Engineer (Java & React) to join a team developing a large-scale digital commerce platform based on microservices and micro-frontends.

You will work end-to-end with Java 25, Spring Boot 4, Spring WebFlux, React, TypeScript and Kubernetes, building new features, integrating backend services and helping modernize the existing platform through legacy migration and technical debt reduction.