Software Engineer; AI Agents

Join our AI team as a Software Engineer to build the intelligence layer that makes our agents think, learn, and act.

Design and ship Computer Use Agent (CUA) capable of autonomously navigating and operating desktop applications.

Architect and maintain the Knowledge Base, the continuously evolving memory, that makes our agents smarter, more personalized, and more accurate over time.

Integrate AI systems within our platform to automate manual workflows and surface actionable data insights.

Implement LLM-as-a-Judge evaluation frameworks to ensure reproducibility and consistent quality across agent behaviors.

Monitor and troubleshoot production issues affecting our AI workloads, and promptly assist the team by providing data and insights to expedite resolution.

Write clean, tested, maintainable code and documentation.

Strong coding and debugging skills.

Proven experience building LLM-based systems and AI agents.

Proficiency with RESTful API design and familiarity with microservices architecture.

Familiarity with relational databases (Postgres) and No‑SQL (Mongo

DB).

Familiarity with knowledge graphs and graph databases (Neo4j).

Excellent communication skills in English.

Strong sense of ownership: you love to take the lead on projects and ensure they reach success.

Plus:
Familiarity with CUA.

Autonomy and Ownership – You’re in charge of your time at Hoshii; decide what you want to do, align with the team, and go for it!

A World-Class Team – We’re a team of servant leaders who work hard and put customers first; we hail from top companies and universities, and we hold ourselves to the highest standards.

Amazing Office Location – We have a lakeside location in Zürich with cozy corners to relax, fostering a comfortable environment where you can thrive.