Full Stack / Front End Engineer (Freelance)

Freelance Frontend/Fullstack (Typescript) Engineer (f/m/x)

Berlin | Hybrid | Freelance | Full time | 3+ months

Build Product Features That Directly Drive Client Value

Join a fast-growing Berlin-based healthtech SaaS company that is transforming how medical practices handle their administrative and financial workflows. Their Activation Team sits at the intersection of product, engineering, and client success - focused on upselling, onboarding, and enabling clients to get the most out of the platform. Step in at an exciting growth phase and build features that have immediate, visible impact.

🌟 Your Mission

You will join the Activation Team as a freelance engineer and help shape the product experience from the inside. Your core responsibilities:

• Build and Enhance Client-Facing Features: Develop high-quality frontend and fullstack functionality using TypeScript, Next.js, React, and Node.js that directly improves the client experience.
• Integrate and Maintain REST APIs: Own integrations and ensure reliable, scalable API connectivity across the platform.
• Support Internal Tools and Cross-Team Initiatives: Collaborate across engineering teams, including Python-based workflows, to build tooling that accelerates internal operations.
• Contribute to AI/LLM Integrations: Participate in experimental AI workflows and help shape how the product leverages emerging LLM capabilities.
• Influence System Design: Contribute to feature planning and architecture discussions alongside product, design, and engineering peers.

What You Bring

✅ Required

• Strong hands-on experience with TypeScript, React, Next.js, and Node.js
• Solid experience integrating and maintaining REST APIs
• Comfortable working cross-functionally with product, design, and client-facing teams
• Fluent in English
• Self-motivated and able to manage your own work in a flexible, fast-moving environment

🚀 Valued

• German language skills
• Experience with LLM or AI engineering
• Python familiarity
• Prior SaaS or healthtech background

🎯 Location and Start

This is a hybrid role in Berlin. The start date is as soon as possible. The initial contract runs for 3+ months with the potential to transition into a full-time position for the right person.

We welcome applications regardless of gender, background, age, religion, sexual orientation, or disability.