Recruit
AI Engineer
Responsible for application development using LLMs and building/operating machine learning models. Lead product development utilizing cutting-edge AI technology.
Full-timePythonOpenAI APILangChainPyTorchAWS
Responsibilities
- Application development using LLMs (GPT-4, Claude, etc.)
- Accuracy improvement through prompt engineering
- Design and implementation of RAG systems
- Training, evaluation, and deployment of machine learning models
- Operation and improvement of AI features in production
RequiredMUST
- 2+ years of Python development experience
- Basic knowledge of machine learning and deep learning
- Experience using LLM APIs (OpenAI/Anthropic, etc.)
- Team development experience using Git/GitHub
PreferredNICE
- Experience with LangChain/LlamaIndex frameworks
- Experience with vector databases
- Experience building and operating MLOps
- Expertise in Natural Language Processing (NLP)
- Experience implementing speech recognition/synthesis
Work Details
Location
Saitama HQ (Remote available)
Hours
Flextime (Core: 10:00–15:00)
Holidays
Weekends, National holidays, Year-end, Summer vacation
Paid Leave
10 days after 6 months (up to 20 days)
Remote Work
3-4 days/week remote (varies by project)
Benefits & Perks
Full health insurance
Commute allowance (up to ¥30,000/mo)
Remote work stipend (¥10,000/mo)
Learning budget (¥5,000/mo for books)
Conference attendance support
Certification reimbursement
Annual health checkup
Life event support
Team learning sessions
Regular 1-on-1s
Side projects allowed
Casual dress code
Interested in the AI Engineer role?
Let's chat. We're happy to answer any questions before you apply.