What We Do
The inbox was never built to run a business. Orders get missed, RFQs go cold, and every line gets retyped into the ERP by hand — one email, one PDF, one WhatsApp message at a time. We built AI Coworkers that do most of the repetitive work nobody wants to do instead: they read what comes in, sort it, draft linked actions, and post clean entries straight into the customer's systems of record. The team approves; Hoshii does the rest.
Our Blind Spot
We are currently growing faster than our infrastructure can follow, running around with duct tape to make our systems reliable while relentlessly shipping new features as well. We are looking for a Software Engineer who will be building and maintaining hOS, the base platform that enables AI agents to swiftly turn emails into one-click ERP automations. You will be an integral part of our engineering team and will ensure every single feature moves the needle. You will join the founding team of talented engineers hailing from ETH & EPFL (among others) and personally contribute to taking Hoshii to its 10x growth stage.
Key Responsibilities
- Architect and maintain reliable, high-performance backend systems, while dealing with the non-deterministic nature of AI agents.
- Develop and maintain hOS, the operating system that hosts our agents, skills and knowledge bases.
- Collaborate with customers to identify platform needs & challenges, and deliver effective solutions.
- Monitor and troubleshoot production issues across services and levels of the stack, and promptly resolve business-critical disruptions that impact our customers.
- Write clean, tested, maintainable code and documentation.
Your Profile
We are looking for team players with a growth mindset and an entrepreneurial spirit:
- Strong coding and debugging skills.
- Proven experience building and maintaining backend applications using Python, Java, Go or similar.
- Proficiency with RESTful API design and microservices architecture.
- Proficiency with relational databases (Postgres) and familiarity with No-SQL (MongoDB).
- Proficiency with DevOps cycles: from deployment (Docker) to orchestration (Kubernetes) and monitoring (Grafana).
- Familiarity with message brokers (e.g., RabbitMQ, Kafka) and their use in decoupling systems and scaling load.
- Familiarity with distributed systems concepts (e.g., CAP theorem, consensus protocols) and microservice patterns, and their practical application to solving real-world problems.
- Plus: Familiarity with ERP and CRM systems.
- Excellent communication skills in English, good command of German.