Fullstack Java/React Engineer — Remote, Cloud SaaS & Equity

Appfire; Województwo mazowieckie; Remote; PLN 180,000 - 300,000; Full time

Benefits offered by this job

Equity

26 days vacation

Wellness Days

Volunteer time

Appfire University

Luxmed private healthcare

UNUM life insurance

MyBenefit Platform

Lunch Card

Home office allowance

Job summary

Appfire is seeking an experienced Fullstack Developer (Java & React) to join our product team working on workflow and automation solutions. You will design, develop, and maintain features using Java, Spring Boot, TypeScript, Node.js, and React, in an agile, lean environment with empowered Scrum teams.

You will build RESTful APIs and frontend applications, ensure code quality with tests, and collaborate with product managers, UX/UI designers, and other developers to deliver scalable cloud-native

Qualifications

• Minimum 3 years of solid commercial experience with Java 17 and Spring Boot, including developing and maintaining RESTful APIs.
• Strong practical experience with TypeScript and Node.js, particularly for backend logic, serverless functions, or API resolvers.
• Strong frontend development experience with React, including modern state management solutions such as Redux or TanStack Query and routing.
• Practical understanding of software design principles, design patterns, and application architecture.
• Experience writing automated tests, including unit and integration tests, and familiarity with tools such as JUnit 5, Mockito, Vitest, or Playwright.
• Experience using Git and Maven, with working knowledge of Docker and modern development workflows.
• Strong problem-solving skills, a hands-on approach, and a willingness to collaborate, experiment, learn, and continuously improve.
• Good English communication skills (B2 or higher)

Responsibilities

• Design, develop, and maintain product features using Java, Spring Boot, TypeScript, Node.js, and React.
• Build and maintain RESTful APIs, backend services, and frontend applications that support our Workflow and Automation solutions.
• Ensure high code quality through unit, integration, and end-to-end testing, code reviews, and collaborative problem-solving.
• Collaborate with product managers, UX/UI designers, and other development teams to deliver features that address customer needs.
• Contribute to the design, development, and continuous improvement of our cloud-based SaaS architecture.
• Help build reliable, scalable, and secure solutions, considering performance, concurrency, caching, and authorization.
• Investigate and resolve technical issues, including providing technical support for our customers.
• Share knowledge, contribute to team discussions, and support continuous learning and improvement across the development team.

Skills

Strong problem-solving

Team collaboration

English communication

Tools

Java

Spring Boot

TypeScript

Node.js

React

Redux

TanStack Query

Git

Maven

Docker

JUnit 5

Mockito

Vitest

Playwright

Job description

Appfire is seeking an experienced Fullstack Developer (Java & React) to join our product team working on workflow and automation solutions. You will design, develop, and maintain features using Java, Spring Boot, TypeScript, Node.js, and React, in an agile, lean environment with empowered Scrum teams.

You will build RESTful APIs and frontend applications, ensure code quality with tests, and collaborate with product managers, UX/UI designers, and other developers to deliver scalable cloud-native