Open to opportunities

Van Duong Nguyen

@vanduongnguyen

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Senior full stack developer delivering scalable, LLM-powered web apps with exceptional performance and user experience.

Vietnam

Message

What I'm looking for

I’m looking to build secure, high-performance products end-to-end and ship LLM-powered automation (LangChain, RAG, agents) that improves productivity—using modern cloud/devops practices, collaborative engineering, and measurable impact.

I’m an accomplished Full Stack Developer with over 9 years of experience specializing in Vue.js and Python—primarily Django, with experience in Flask. I build scalable, high-performance web applications and enterprise solutions, with a strong focus on performance, security, and exceptional user experience.

In my most recent role at Talynexis, I developed data annotation platforms and integrated machine learning and LLM-powered features using Django REST Framework, LangChain workflows, and RAG pipelines. I optimized performance (reducing page load times by 35%), added real-time collaboration with WebSockets and Django Channels, and improved scalability with Celery and RabbitMQ. Previously, at MixCare Health I improved data retrieval by 25% and rebuilt key e-commerce experiences, and at TMA Solutions I engineered secure payment systems, including encryption that reduced vulnerabilities by 30% and caching that decreased API response times by 40%.

Experience

Work history, roles, and key accomplishments

Current

Senior Full Stack Developer

Current

Talynexis, LLC

Nov 2022 - Present (3 years 6 months)

Developed data annotation platforms with Next.js/React and built scalable Python/Django back-end services with LLM-powered features. Reduced page load times by 35% using React lazy loading and Django caching, and automated annotation support with LangChain agent workflows and RAG pipelines.

Next.js React TypeScript Python Django Django REST Framework LLMs (LangChain

Full Stack Developer

MixCare Health

Sep 2019 - Jun 2022 (2 years 9 months)

Built customer-facing web applications using Vue.js and developed Python/Django back-end services for authentication, order processing, and inventory management. Implemented GraphQL APIs and optimized PostgreSQL queries to reduce data retrieval times by 25%.

Vue.Js Vuex Python Django GraphQL PostgreSQL Docker Kubernetes Performance Optimization

Back-End Developer

TMA Solutions

Dec 2017 - May 2019 (1 year 5 months)

Engineered secure payment processing systems with Python/Django and Flask, implementing RESTful APIs for payments and user accounts. Reduced vulnerabilities by 30% through encryption/security protocols and decreased API response times by 40% using Redis caching.