Prompt Engineer/ AI Engineer

Vitex Vietnam is a technology company specializing in IT Outsourcing and customized AI solutions. We are expanding our team to develop AI-powered products that integrate with ChatGPT APIs or operate on self-hosted open-source AI models.
We are looking for a Prompt Engineer/ AI Engineer to research, develop, and deploy intelligent AI systems that optimize workflows and enhance user experiences.
Responsibilities
You will be responsible for researching and developing AI-powered products that interact with ChatGPT or open-source AI models. Specifically:
Develop and Optimize AI Prompts
Design and test effective prompts to improve AI model accuracy.
Research and implement Prompt Engineering techniques to enhance AI-user interaction.
Build specialized prompt libraries for various use cases such as customer support, internal assistance, and virtual assistants.
AI Integration with APIs or Self-Hosted Models
Integrate ChatGPT API and AI models such as GPT-4, Claude, Llama, Mistral, etc., into internal systems.
Deploy and optimize self-hosted AI models using open-source frameworks like Hugging Face and LangChain.
Develop AI-powered chatbots and automated customer support systems.
AI Research & Optimization for Business
Stay updated with the latest AI models and apply them to real-world products.
Collaborate with product teams to integrate AI into internal workflows, such as report summarization, data analysis, and employee support.
Ensure smooth AI operations, accurate responses, and compliance with data policies.

Must-have
1+ years of experience in AI (Machine Learning, NLP, Prompt Engineering, or Chatbot Development).
Understanding of OpenAI APIs and how to call APIs from ChatGPT or other AI models.
Proficiency in Prompt Engineering, with the ability to build and optimize AI prompt systems.
Experience deploying open-source AI models such as Llama, Mistral, Whisper, Stable Diffusion.
Strong programming skills in Python, FastAPI, LangChain, or similar frameworks.
Basic English communication skills and ability to read technical documentation.
Nice-to-have
Experience working with Hugging Face, OpenAI, Anthropic.
Hands-on experience deploying AI models on servers or cloud platforms.
Familiarity with Vector Databases (FAISS, Pinecone) and Retrieval-Augmented Generation (RAG).
Experience with Docker, Kubernetes for AI model deployment.