Senior Backend Engineer - AI & Search Platform
HaiiloHamburg, Germany
Posted October 28, 2025
Full Time
About the Company
Haiilo is a leading employee communications and engagement platform that empowers companies to foster a more connected, engaged, and aligned workforce.
Job Description
We’re building a brand-new AI Engineering Team. As a Senior Backend Engineer - AI & Search Platform, you’ll design and scale the backend foundation that powers AI-driven discovery and intelligence in our product. You’ll turn state-of-the-art AI into real product impact, integrating established ML frameworks, vector and keyword search engines, and transformer-based architectures into production-ready systems.
Requirements
- 5+ years of hands-on experience building and operating Spring Boot (Java) services backed by a SQL database
- Hands-on experience with keyword and vector search engines
- Solid understanding of Transformer architectures and how to use them effectively in production
- Experience with at least one widely used ML framework (e.g. PyTorch, TensorFlow, or similar)
- Proven ability to communicate complex technical concepts clearly — and collaborate across engineering, product, and AI teams in excellent English
- Huge interest in Retrieval-Augmented Generation (RAG) (experience with hybrid search and reranking systems) and cutting-edge AI technologies
Benefits
- Flexibility & Teamwork
- Company Vibe
- Growth
- Time off
- Health & wellbeing
- Sustainability
- Diversity & Inclusion
