David is a passionate OpenAI Integration Engineer with a strong background in full-stack development. With over 9 years of experience, David specializes in embedding large language models into scalable applications, building chatbots, retrieval-augmented generation (RAG) systems, and intelligent API integrations.
Alongside his AI work, he has solid experience in building robust backend systems and polished frontend interfaces. David is deeply motivated by problem-solving, enjoys contributing to AI communities, and continuously sharpens his skills in full-stack and machine learning technologies.
Skills
- LangChain
- Node.js
- OpenAI
- Python
- PostgreSQL
- React
- Redis
- Vue.js
Experience
- 2023 - Present
OpenAI Integration Engineer à Mindwave AI
At Mindwave AI, David built a multi-modal customer support system using OpenAI’s GPT APIs. He developed modular prompts, integrated memory chains with LangChain, and worked on the backend to connect LLM outputs to business CRMs and support tools. His tasks included prompt refinement, vector database setup, API optimization, and frontend improvements for chat UX.
- OpenAI API
- LangChain
- Python
- Next.js
- PostgreSQL
- Redis
- 2021 - 2023
Backend Developer à Datavisor Labs
David worked on high-traffic analytics platforms, focusing on backend services that processed large datasets and generated predictive reports. He designed RESTful APIs, managed microservices, and built secure authentication systems for enterprise clients.
- NodeJS
- ExpressJS
- MongoDB
- Docker
- RabbitMQ
- 2019 - 2021
Frontend Developer à Nexora Systems
At Nexora Systems, David built responsive single-page applications with a strong focus on UX and performance. He developed dashboards for analytics tools, designed component libraries, and collaborated closely with backend teams to ensure seamless integration.
- ReactJS
- TypeScript
- Redux
- Material UI
- 2017 - 2019
Full-Stack Developer à FleetMind Technologies
David participated in building a smart vehicle management platform. He worked on both the backend services for fleet data processing and the frontend visualizations that allowed fleet managers to track vehicle statuses, routes, and alerts in real-time.
- Ruby on Rails
- VueJS
- PostgreSQL
- Redis
- 2015 - 2017
Junior Full-Stack Developer à Brightflow Solutions
David helped develop internal tools for business process automation at Brightflow Solutions. He worked on internal admin panels, backend reporting services, and basic integrations between web apps and external APIs.
- Django
- jQuery
- MySQL
Education
- 2015
Bachelor of Science in Computer Science à University of Information Technology (UIT)
