Fullstack Developer (Java & React)

BulgariaRemoteFull-time2026-10-30 → 2026-11-10

Remote

Core

Design, develop, and maintain backend services and frontend features for Workflow and Automation SaaS solutions used by thousands of companies worldwide.

Role type

Senior Fullstack Developer (Java & React)

Builds

Workflow and Automation SaaS products

Domain

Enterprise SaaS / Workflow Automation

Deliverable

production ML models | product features

Required skills

Java 17, Spring Boot, TypeScript, Node.js, React 18, RESTful APIs, Unit/Integration/E2E testing, Git, Docker

Preferred skills

Serverless functions, API resolvers, Modern state management (Redux, TanStack Query), Routing libraries

Technologies

Java, Spring Boot, TypeScript, Node.js, React, JUnit 5, Mockito, Vitest, Playwright, Maven, Docker

Responsibilities

Design and develop backend services and RESTful APIs; Develop responsive frontend functionality; Ensure high code quality through testing and code reviews; Collaborate with Product Owners, PMs, and designers; Contribute to SaaS architecture evolution; Monitor and optimize application performance; Provide technical assistance to customers

Seniority

Senior, hands-on IC

About Appfire

Appfire is looking for a Tech Lead - Fullstack Engineer to join the BigPicture team and help evolve a modern, cloud-based SaaS platform. You’ll lead the design of new functionality, optimize existing services, and support systems used by thousands of tenants. This role is heavily rooted in backend expertise, requiring a profound understanding of Java, Spring, and AWS / Cloud technologies. Additionally, the ideal candidate must have the willingness and capability to look after the frontend layer (TypeScript, Angular, or React), bridging the gap to deliver end-to-end solutions. 