Tech Wave Hires

We are a fully bootstrapped and profitable B2B SaaS startup reshaping how hotels communicate with their guests. 

In just one year, we have become the leading Voice AI provider for hospitality in Europe, working with a growing number of hotels from boutique city stays to luxury resorts across the continent. 

Our mission is simple: 

Help hotels be available for every guest, at any time, without losing a single booking or opportunity. 

We are now expanding rapidly across the DACH region, and we are looking for a Full-Stack / Backend Engineer to join our core team and help us build the next generation of conversational AI for hospitality.

What You Will Build

You will work on the voice AI platform, a self-service system that enables hotels to configure, deploy, and manage their own AI voice agents.

Hotels use it to:

• Integrate with their existing booking systems
• Manage real-time availability and reservations
• Respond to guest inquiries using Retrieval-Augmented Generation (RAG) and other AI technologies

You will help design and improve the architecture that powers all this, expand integrations, optimize performance, and prepare the platform for large-scale growth.

Your Responsibilities

• Develop and scale backend systems, APIs, and integrations with booking and property management software
• Collaborate closely with founders, engineers, and designers to build new features from start to finish
• Contribute to system architecture and infrastructure decisions
• Experiment with AI-driven systems, including prompt engineering and RAG pipelines
• Take full ownership of projects from concept to deployment

Tech Stack

• Languages: Python (primary), JavaScript
• AI Stack: Prompt Engineering, Retrieval-Augmented Generation (RAG), LLM APIs
• Frameworks: Livekit
• Tools: Cloud IDEs such as Cursor or Claude Code, GitHub, Linear

How We Work

• Remote-first: Work from anywhere, operating mainly on CET (German time)
• Lean and agile: We move fast and make decisions quickly while maintaining strong collaboration and open communication
• Real impact: Your work directly shapes how thousands of hotel guests experience AI

What We Are Looking For

• Strong experience in backend development and system design. Curiosity and hands-on experience with AI tools such as RAG, LLMs, Livekit, or vector databases
• Interest in working across the stack (frontend experience is a plus)
• A builder’s mindset with a high degree of ownership and self-motivation
• Excellent communication skills and team spirit
• Fluent in English (German is a plus)

Compensation

€3,800 - €4,800 per month (B2B, depending on experience and technical scope). 

Senior candidates with AI / LLM expertise may qualify for higher compensation. Includes long-term equity participation.