Software Engineer

About

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

Key Responsibilities

• 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.

Your Profile

• 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 (MongoDB).
• 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.

Benefits

• 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.