You will be responsible for designing, implementing, and operating the core backend systems for Cotomo and our upcoming new products.
Responsibilities
- Design and implement efficient and highly available infrastructure to support high-volume requests
- Build backend systems that integrate with various AI models including STT, LLM, and TTS.
- Develop streaming systems to enable real-time, high-quality voice conversations
- Construct large-scale data analysis platforms
- Optimize performance and improve scalability of our systems
Tech Stack
Python, Rust, TypeScript, WebSocket, WebRTC, ElasticSearch, PostgreSQL, GCP, Azure, AWS, Unity, Weights & Biases, NVIDIA Triton, vllm, pytorch, transformers, deepspeed, Dataform, BigQuery, Sentry, Slack, Github
Requirements
- 6+ years of experience in designing, implementing, and operating backend systems
- Experience in launching new software products in a leadership role
- Proficiency with relational databases (PostgreSQL/MySQL etc.) and NoSQL databases
- Experience in developing systems that handle large-scale traffic
- Basic knowledge of real-time communication technologies such as WebRTC and WebSocket
- Experience in operating systems on cloud platforms (AWS, GCP, Azure, etc.)
- Experience in developing applications using RAG - personal projects are acceptable
- Conversational Japanese ability
Nice to haves
While not specifically required, tell us if you have any of the following.
- Enthusiasm for learning and applying new technologies to product development
- Ability to think from a user experience perspective and creatively solve technical challenges
- Values teamwork and can communicate openly
- Experience working in early-stage startups (within a few years of founding)
- Experience in operating machine learning models in production environments
- Experience in building and maintaining home server environments
- Experience in training and fine-tuning deep learning models such as LLMs
- Knowledge or experience in speech recognition and natural language processing
Compensation
Starting from 8.5 million JPY annually, with performance-based stock options.
