Lập trình viên AI/ AI Developer (LLM & Applied AI)

ROLE OVERVIEW
We are looking for an AI Developer with strong hands-on experience in LLM-based systems, RAG architectures, and production-grade AI solutions. You will design, build, and deploy AI-driven features that deliver concrete business value, ranging from intelligent assistants and agentic workflows to document-based reasoning systems and AI-powered automation.
You will work closely with product, platform, and business stakeholders to translate complex domain problems into scalable, secure, and maintainable AI solutions.
KEY RESPONSIBILITIES
AI & Application Development
Design, implement, and deploy LLM-powered applications, including chatbots, copilots, and AI agents.
Build and optimize Retrieval-Augmented Generation (RAG) pipelines using vector databases and structured knowledge sources.
Develop agentic workflows for multi-step reasoning and automation where single-prompt LLM usage is insufficient.
Integrate AI capabilities into existing platforms via REST-based microservices.
Architecture & Platform
Contribute to the architecture of scalable, production-ready AI systems.
Integrate multiple LLM providers (cloud and/or local models) in a unified application layer.
Ensure data security, access control, and privacy-aware AI design, especially for enterprise or client-sensitive environments.
MLOps & Engineering Quality
Containerise and deploy AI services using Docker and cloud-native tooling.
Implement monitoring for latency, errors, token usage, and system health.
Apply software engineering best practices: clean code, testing, CI/CD, and documentation.
Collaborate in code reviews and contribute to shared technical standards.
Collaboration & Impact
Work closely with stakeholders to align AI solutions with real business needs.
Communicate technical concepts clearly to non technical audiences when needed.
Contribute ideas on how AI can improve workflows, products, and decision-making.
REQUIRED SKILLS AND EXPERIENCE
Core Technical Skills
Strong Python proficiency for AI and backend development.
Hands-on experience with LLMs, including prompt engineering and system-level design.
Solid experience with RAG architectures and vector databases (e.g. pgvector or similar).
Experience building APIs using FastAPI or equivalent frameworks.
Practical knowledge of Docker and cloud deployment (Azure and/or AWS).
AI & ML Stack
Frameworks such as LangChain, LlamaIndex, Semantic Kernel, PyTorch, TensorFlow, or similar.
Experience with NLP, transformers, deep learning, or applied ML.
Familiarity with knowledge graphs, document processing, or conversational AI is a strong plus.
Engineering Practices
Experience working with microservices, integrations, and REST APIs.
Good understanding of CI/CD, version control, and collaborative development.
Ability to build maintainable, production-quality systems, not just prototypes.
Nice to Have
Experience with agent-based architectures (multi-agent or tool-using agents).
Experience deploying local LLMs for privacy-sensitive or on prem environments.
Cloud infrastructure knowledge (Terraform, AWS services, Azure Databricks, Kubernetes).
Frontend or full-stack exposure (NodeJS, Vue, Typescript) is a plus
Prior consulting or client-facing experience.
Soft Skills & Mindset
Strong problem-solving and analytical thinking.
Proactive, ownership-driven attitude.
Comfortable working in fast-moving, evolving AI landscapes.
Clear communicator with good collaboration skills.
Curious mindset and willingness to continuously learn and experiment.
WHY WORK WITH US
Opportunity to work on forward-thinking projects/overseas projects using the most advanced tools and international standards
International working environment and European management style
Training opportunities to develop your career
15 days annual leave, 12 days sick leave, 15-20 days child sick leave
International private hospitalisation insurance with annual health check at Vinmec (VIP package)
Social insurance, health insurance, unemployment insurance, trade union paid following labour law
Team building, year-end party activity and other benefits following company policy
5 working days per week (Mon to Fri) with flexible starting time (7AM-9AM).
Provides electric vehicles for employees
Ngành nghề: CNTT - Phần mềm
Kinh nghiệm: 2 Năm
Cấp bậc: Nhân viên
Hình thức: Nhân viên chính thức
Địa điểm: Hà Nội, Hồ Chí Minh

Yêu cầu công việc

REQUIRED SKILLS AND EXPERIENCE
Core Technical Skills
Strong Python proficiency for AI and backend development.
Hands-on experience with LLMs, including prompt engineering and system-level design.
Solid experience with RAG architectures and vector databases (e.g. pgvector or similar).
Experience building APIs using FastAPI or equivalent frameworks.
Practical knowledge of Docker and cloud deployment (Azure and/or AWS).
AI & ML Stack
Frameworks such as LangChain, LlamaIndex, Semantic Kernel, PyTorch, TensorFlow, or similar.
Experience with NLP, transformers, deep learning, or applied ML.
Familiarity with knowledge graphs, document processing, or conversational AI is a strong plus.
Engineering Practices
Experience working with microservices, integrations, and REST APIs.
Good understanding of CI/CD, version control, and collaborative development.
Ability to build maintainable, production-quality systems, not just prototypes.
Nice to Have
Experience with agent-based architectures (multi-agent or tool-using agents).
Experience deploying local LLMs for privacy-sensitive or on prem environments.
Cloud infrastructure knowledge (Terraform, AWS services, Azure Databricks, Kubernetes).
Frontend or full-stack exposure (NodeJS, Vue, Typescript) is a plus
Prior consulting or client-facing experience.
Soft Skills & Mindset
Strong problem-solving and analytical thinking.
Proactive, ownership-driven attitude.
Comfortable working in fast-moving, evolving AI landscapes.
Clear communicator with good collaboration skills.
Curious mindset and willingness to continuously learn and experiment.
WHY WORK WITH US
Opportunity to work on forward-thinking projects/overseas projects using the most advanced tools and international standards
International working environment and European management style
Training opportunities to develop your career
15 days annual leave, 12 days sick leave, 15-20 days child sick leave
International private hospitalisation insurance with annual health check at Vinmec (VIP package)
Social insurance, health insurance, unemployment insurance, trade union paid following labour law
Team building, year-end party activity and other benefits following company policy
5 working days per week (Mon to Fri) with flexible starting time (7AM-9AM).
Provides electric vehicles for employees