Principal Backend Engineer (Python, AI)
Urgent
Ho Chi Minh
Tech/Engineer
TOP 3 REASONS TO JOIN US
- Perks you will love: Hybrid woring; 16 - 24 paid days off; Top modern & sufficient devices
- Solid global business: No.1 market - 13.7 million B2C users in Japan; 140,000+ paying business customers; Listed in the prime market of Tokyo Stock Exchange
- Hub of growth support: Fintech industry; Tailored L&D programs for individual growth
Job Description
We are looking for a backend engineer to lead the development of our AI Agent platform/application from the ground up. The ideal candidate has experience designing scalable systems, integrating with complex toolchains, and driving cross-functional teams with strong technical leadership.
Responsibilities
- Backend development of the AI Agent platform or application from scratch, handling large-scale user data and system logs
- Design and build complex system architectures that integrate with internal/external APIs, vector databases, and various developer toolchains
- Monitor system behavior proactively and respond swiftly to abnormal agent behavior or system failures
- Introduce tools, systems, and development culture to improve engineering efficiency and team collaboration
- Mentor and support the growth of team members by helping them develop strong technical fundamentals
- Take technical leadership across a cross-functional team—including backend, frontend, AI, and SRE engineers—and drive the overall development process
Requirements
- Technical
- Must have
- 8+ years for Web development
- 3+ years of experience with Python (or Golang as an alternative)
- Solid understanding of:
- Frontend development (e.g., TypeScript, React)
- Cloud infrastructure (e.g., AWS, Azure, Terraform, serverless architecture)
- AI system integration (e.g., working with LLM APIs, embedding, vector DBs
- Experience with:
- Type hinting and static analysis using mypy
- Unit testing using pytest
- Code quality tools: black, flake8, isort, bandit
- Docker and containerized development
- Operating and maintaining applications in a production environment
- Application performance tuning
- Agile development processes
- Nice to have
- Experience with:
- Django (web framework)
- Celery (asynchronous task processing with Amazon SQS or other brokers)
- Graphene (GraphQL library with code-first approach)
- Practical knowledge in:
- Container Orchestration (e.g., Kubernetes, Kustomize)
- Frontend architecture design or collaboration with frontend engineers
- Integrating LLMs into production applications (e.g., prompt management, RAG pipeline, evaluation tools)
- Infrastructure as Code (IaC) and CI/CD pipeline automation
- Experience in B2B application development
- Communication
- Experience mentoring or educating team members
- Strong sense of ownership and accountability
Our benefits
Caring Mental & Physical Recreation
- Hybrid working: 2 days at the office and 3 days WFH
- Working hour: Flexible start 8AM-9AM from Mon-Fri
- Full salary in probation
- Insurance: Applied from Probation period:
- Social Insurance, Health Insurance, Unemployment Insurance (on 100% salary)
- Private health insurance & accident insurance. From Managing level: extra for family members
- Bonus: 13th month salary
- 16 - 24 paid days off and more
- Paternity leave: Extra 5 days
- Annual company trip; Quarterly team building
- Billiards & Running club
- Annual health check
- Well-equipped facility: Macbook pro, additional monitor,..
Caring Career & Development
- Clear Career path
- Foreign language & International technology-related certifications sponsoring
- External & internal training courses
- Soft-skill workshops
- Tech seminars
- Monthly and biannual Recognition Awards
- Performance & salary review: twice/year (Jun & Dec)
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