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Fullstack Developer (m/f/d)

Project specification

Project duration
Period 20.04.2026 - 19.02.2027
Project location
Location Hamburg, Germany
Remote work ratio
Remote up to 95%
Required languages
Languages
German(Advanced)

Project expertise

Industries
Information Technology
Business areas
Information Technology Product Development

Description

An organization is looking for an experienced fullstack developer to further develop and expand an existing enterprise customer portal. The goal is to merge previously separate customer segments onto a common portal and system platform, integrate existing business logic and interfaces, and replace a legacy application with modern web features. The role includes translating functional requirements into clean, maintainable code, including tests and technical documentation. You will work in a small, agile development team with product owners and Scrum Masters, and take on tasks such as monitoring, testing, and bug fixing.

Requirements

  • Further develop and enhance a business customer portal (web application)

  • Technically merge customer segments into a common platform

  • Integrate and adapt existing business logic and interfaces (API-based)

  • Migrate and replace a legacy application with web features

  • Implement requirements into maintainable code, including tests and documentation

  • Collaborate in an agile development team (Scrum or Kanban)

  • Monitor, test, and fix bugs in production applications

  • Experience in UX/UI design (Vue / TypeScript)

  • Knowledge of Java (microservice experience) and Spring Boot

  • Experience with databases (e.g., PostgreSQL or CloudSQL)

  • Familiarity with Docker and version control (Git, Bitbucket)

  • Know-how in Google Cloud

  • Practical experience with AI-assisted development (e.g., Claude Code, prompt engineering)

  • Familiar with modern software architecture and agile practices (e.g., pair/mob programming)

  • Responsible approach to code and solutions

  • Team player with professional experience in programming and testing

  • Knowledge of Spring Boot based backend systems, including REST APIs & Kafka communication (advantageous)

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Frequently asked questions

The project is based in Hamburg, Germany.
The project preferably starts in April 2026 and is planned to end in February 2027 (10 months).
The project offers 0 - 95% remote work.
The project requires the following languages: German (Advanced).
The project is related to the following industry: Information Technology.
The project covers the following business areas: Information Technology and Product Development.
Yes! Recommend a freelancer for the project and earn 30% of FRATCH's profits every time they get placed — for the duration of that project. Simply share your invite link with a colleague to get started.
To apply for the project, click the Apply button on the project page to submit your profile for review. We will forward your resume to the client and get back to you within a few days.
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