Senior Full Stack Developer (Java / Spring Boot / React / Next.js) - Freelance / Remote / ASAP

Project overview

For the further development of a modern product platform, we are looking for an experienced Senior Full Stack Developer (m/f/d) with a focus on Java, Spring Boot, React, and Next.js.

We are seeking a technically strong developer who is comfortable in both backend and frontend development and actively participates in architectural and technological decisions in addition to development.

Key Details

• Start: short notice / by arrangement
• Duration: planned long-term
• Utilization: Full-time preferred
• Location: predominantly Remote
• Language: German

Responsibilities

• Development of modern web applications with Java, Spring Boot, TypeScript, React, and Next.js
• Conception and development of scalable backend services
• Design and further development of REST and GraphQL APIs
• Development of performant and user-friendly frontends
• Participation in architectural and technological decisions
• Optimization of performance, security, and maintainability
• Further development of technical standards and best practices

Requirements

Particularly interesting

You have already implemented projects where you successfully combined Java/Spring Boot in the backend with React or Next.js in the frontend.

Ideally, you have not only developed but also taken responsibility for architecture, technical concepts, or technological decisions.

Please submit

Additionally, we would appreciate:

Note

For this project, we are exclusively seeking direct engagement with freelance individuals.

Inquiries from system houses, agencies, consulting firms, and other intermediary companies cannot be considered.

Interested? Then I look forward to receiving your profile, including availability, hourly rate, and relevant project experience.

I will gladly explain further project details in a personal conversation.

I look forward to your message!

• Several years of experience with Java and Spring Boot
• Experience with Spring Web, Spring Data, and Spring Security
• Very good TypeScript skills
• Several years of project experience with React
• Practical experience with Next.js
• Experience with GraphQL
• Experience in designing modern APIs
• Knowledge of OAuth2, OpenID Connect, and JWT
• Experience with OpenAPI / Swagger
• Knowledge of JPA / Hibernate
• Experience with Docker and Kubernetes
• Experience with CI/CD pipelines
• Experience in cloud environments
• Knowledge of microservice architectures
• Ideally, experience with Kafka or comparable messaging solutions
• Understanding of modern software architectures
• Experience in complex enterprise environments
• Current availability
• Earliest possible start date
• Hourly rate
• Location
• Relevant project references
• A brief self-assessment regarding the mentioned technologies
• A project example where you used Java/Spring Boot and React/Next.js together
• A brief description of your role in architectural and technological decisions

Project details

• Start: ab sofort
• Duration: 3 Monate
• Remote: hybrid
• Location: Köln, Deutschland, DE
• Languages: German