About the Company

We're on a mission to revolutionize how humans access knowledge through artificial intelligence. Throughout history, breakthroughs in knowledge sharing—from the Library of Alexandria to the printing press to Google—have been pivotal drivers of human progress. Today, as the volume of human knowledge grows exponentially, making it accessible and actionable remains one of humanity's most critical challenges. We're building a future where knowledge isn't just more accessible—it's a catalyst for achieving the previously impossible. If all of this sounds exciting, you’re in the right place.

About the Role

Job Title: Backend Engineer - Search
Location: Stockholm
Employment Type: Full-time
Department: Engineering

Join the Sana AI search team to shape the future of knowledge work from enterprise search to intelligent agents. Our goal is to enable humans and agents to understand, find, and act on any piece of information, regardless of format. To achieve this, we are reconsidering the traditional enterprise search stack from the ground up to be inherently multi-modal and leverage the latest developments in LLMs.

Responsibilities

• Design and implement core search and retrieval system.
• Ensure high system performance, scalability, and reliability.
• Develop ranking models using rigorous experimentation and evaluation.
• Use the latest language modeling techniques to improve search results.

Qualifications

Your background looks something like:

• Proven experience in developing and managing large-scale search and retrieval systems (e.g., Vespa, Elastic Search).
• Skilled in optimizing performance and scalability for efficient data processing.
• Hands-on experience with data processing or workflow orchestration frameworks (e.g., Airflow, Apache Beam, Temporal).
• Systematic, first-principles, and data-driven approach to problem solving.
• Familiarity with the latest language modeling techniques relevant to search (e.g., LLMs, BERT, ColPali).

What We Offer

• Help shape AI's future alongside brilliant minds from Notion, Dropbox, Slack, Databricks, Google, McKinsey, and BCG.
• Competitive salary complemented with a transparent and highly competitive options program.
• Swift professional growth in an evolving environment, supported by a culture of continuous feedback and mentorship from senior leaders.
• Work with talented teammates across 5+ countries, collaborate with customers globally, and work in our offices in New York, London, and Stockholm.
• Regular team gatherings and events (recently in Italy and South Africa).