Remote Fullstack Developer (Java & TypeScript)

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

Benefits offered by this job

Equity for all team members

26 vacation days annually

Wellness Days (1 day/month)

Volunteer time and CSR days

Appfire University learning platform

Luxmed private healthcare + partner/Up

Job summary

Appfire is hiring an experienced Fullstack Developer (Java & TypeScript) to enhance Workflow and Automation solutions used by thousands of companies worldwide. You will work in agile teams to deliver features across backend and frontend, ensure quality through tests, and contribute to our cloud-based SaaS architecture.

The role requires 3+ years in Java/Spring Boot and React, strong API design, and good English communication.

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

Java 17

Spring Boot

TypeScript

Node.js

React

Redux/TanStack

REST APIs

Testing (JUnit/Mockito/Vitest/Playw)

Git

Maven

Docker

English (B2+)

Tools

Git/Maven workflows

Docker

Job description

Appfire is hiring an experienced Fullstack Developer (Java & TypeScript) to enhance Workflow and Automation solutions used by thousands of companies worldwide. You will work in agile teams to deliver features across backend and frontend, ensure quality through tests, and contribute to our cloud-based SaaS architecture.

The role requires 3+ years in Java/Spring Boot and React, strong API design, and good English communication.