Full-Stack Developer (Java, React)

Quick Facts

• Role: Full-Stack Developer (Java / React)

• Work split: ~50% backend / ~50% frontend

• Location: Warsaw, Poland (Hybrid: 2 days per week in-office)

• Engagement: B2B Contract

Description

Join a core engineering initiative to build and scale complex applications for global investment fund and asset management processes. You will develop Java/Spring microservices and high-performance REST APIs, and build modular, responsive React user interfaces. You will also maintain, refactor, and troubleshoot applications across a service-oriented architecture.

Responsibilities

• Develop backend microservices and application components using Java and Spring/Spring Boot

• Build frontend user interfaces using React and JavaScript/TypeScript

• Design, build, and integrate high-performance REST APIs

• Collaborate with international engineering teams on business and technical requirement analysis

• Maintain, refactor, and enhance existing applications in a service-oriented architecture

• Troubleshoot and debug technical issues across full-stack environments

Requirements

• Mid-Senior level experience as a Fullstack Developer on enterprise-scale systems

• Strong Java and Spring/Spring Boot proficiency

• Solid hands-on React experience

• JavaScript and TypeScript experience

• Good knowledge of REST API development and integration

• Ability to maintain and improve complex, service-oriented architectures

• Fluent English for daily communication in an international project setup

Benefits

• B2B contract

• Hybrid working model (2 days per week in-office in Warsaw, Poland)