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Hoàng Long ĐoànHO
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Hoàng Long Đoàn

@honglongon

AI Engineer at VNG Hanoi (Green Node), where I improved Vietnamese OCR similarity from 0.90 to 0.97.

Vietnam
Message

At VNG Hanoi (Green Node), I co-developed a production document-AI gRPC microservice for computer vision, OCR, and structured information extraction across more than 60 Vietnamese banking and insurance document types. I also improved detection validation IoU from 0.85 to 0.95+ through targeted data augmentation.

I rebuilt the recognition stage around per-line OCR, cutting recognizer calls by about four times, and fine-tuned SVTRv2-GTC for Vietnamese line-level OCR. The work raised Levenshtein similarity from 0.90 to 0.97 across printed and handwritten lines.

At HUST Lab, I’m researching vision-language models for medical image segmentation, including a Text-Guided Frequency Selection module. I’ve also developed projects involving a LangGraph multi-agent system and an AI pipeline for blockchain vulnerability classification.

Experience

Work history, roles, and key accomplishments

VN

AI Engineer

VNG Hanoi (Green Node)

Jun 2024 - Aug 2026 (2 years 2 months)

Co-developed a production document-AI gRPC micro-service for Computer Vision, OCR and structured information extraction across 60+ Vietnamese insurance and banking document types. Designed data augmentation strategies, optimized inference with TensorRT, vLLM, and Triton, and fine-tuned OCR models.

Education

Degrees, certifications, and relevant coursework

Hanoi University of Science and Technology logoHT

Hanoi University of Science and Technology

Bachelor of Science, Computer Science

2022 -

Pursuing a Bachelor of Science in Computer Science, expected to graduate in 2026.

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