Remote Fullstack Engineer - Java + React SaaS

Appfire; Poland; Remote; PLN 180,000 - 240,000; Full time

Benefits offered by this job

26 vacation days

Wellness days

Volunteer time/CSR days

Appfire University learning platform

Luxmed health plan

Life insurance (UNUM)

MyBenefit 150 PLN/month

Lunch Card 300 PLN/month

Home office allowance 200 PLN net/mo

Job summary

Appfire is a global software company with 800+ employees working remotely across 28 countries. We build Workflow and Automation solutions used by thousands of companies worldwide.

We seek an experienced Fullstack Developer (Java & React) to join our product team and help shape a scalable, cloud-based SaaS platform. You will design, implement, and maintain features across the stack, collaborate with product managers and designers, and contribute to a culture of ownership and continuous

Qualifications

• 3+ years of commercial experience with Java 17 and Spring Boot.
• Strong experience with TypeScript and Node.js for backend logic.
• Frontend experience with React and modern state management (Redux or TanStack Query).
• Knowledge of software design principles, patterns, and architecture.
• Experience writing automated tests (JUnit 5, Mockito, Vitest, Playwright).
• Experience using Git and Maven; working knowledge of Docker and modern workflows.
• Strong English communication skills (B2 or higher).

Responsibilities

• Design, develop, and maintain features using Java, Spring Boot, TypeScript, Node.js, and React.
• Build and maintain RESTful APIs, backend services, and frontend applications forWorkflow and Automation.
• Ensure high code quality through tests, reviews, and CI practices.
• Collaborate with product managers, UX/UI designers, and other teams to deliver features that meet customer needs.
• Contribute to design and evolution of cloud-based SaaS architecture.
• Investigate and resolve technical issues; provide customer support when needed.
• Share knowledge and support continuous learning across the team.

Skills

Java

Spring Boot

TypeScript

Node.js

React

RESTful APIs

Testing (JUnit 5/Mockito/Vitest/Playwr

Git & Maven

Docker

Redux

TanStack Query

English (B2+)

Tools

Redux

TanStack Query

Docker

Job description

Appfire is a global software company with 800+ employees working remotely across 28 countries. We build Workflow and Automation solutions used by thousands of companies worldwide.

We seek an experienced Fullstack Developer (Java & React) to join our product team and help shape a scalable, cloud-based SaaS platform. You will design, implement, and maintain features across the stack, collaborate with product managers and designers, and contribute to a culture of ownership and continuous