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Java Fullstack Developer (all genders)

Aachen, NORDRHEIN_WESTFALEN💼 Full-time🗓 2026-09-09 → 2026-09-26

Core

Developing modern, scalable web applications and services across the full stack, from backend APIs to frontend interfaces.

Role type

Senior Full Stack Developer (Java/React)

Builds

Scalable web applications, REST and GraphQL APIs, and complex user interfaces.

Domain

Enterprise software development, distributed systems

Deliverable

production ML models | product features

Required skills

Java, Spring Boot, TypeScript, React, Next.js, REST API design, GraphQL, OAuth 2.0, OpenID Connect, JWT, OpenAPI/Swagger, software architecture

Preferred skills

GraphQL, WebSockets, JPA/Hibernate, relational databases, state management, automated frontend testing, CI/CD pipelines, microservices, cloud architecture, Kafka

Technologies

Spring Boot, Spring Web, Spring Data, Spring Security, TypeScript, React, Next.js, REST, GraphQL, OAuth 2.0, OpenID Connect, JWT, OpenAPI, Swagger, Kafka, JPA, Hibernate

Responsibilities

Develop and evolve modern web applications using Java, Spring Boot, TypeScript, React, and Next.js; Conceive and implement scalable backend services and REST/GraphQL APIs; Develop and refine complex, performant user interfaces; Design communication between frontend, backend, and internal/external systems; Participate in architecture decisions and evolve the distributed system landscape; Analyze and optimize performance, scalability, and maintainability; Actively shape technical standards, best practices, and future system architecture.

Seniority

Senior, hands-on IC

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