Open to opportunities

Nick Nguyen

@nicknguyen

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Senior AI/ML engineer specializing in LLMs, RAG systems, and production MLOps.

Poland

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What I'm looking for

I seek roles building scalable LLM and RAG systems with strong MLOps, observability, and cross-functional impact in enterprise contexts.

I am a Senior AI/ML Engineer with over 8 years delivering end-to-end NLP, computer vision, and machine learning solutions across healthcare, financial, and e-commerce domains.

I combine deep ML research with enterprise-grade MLOps, owning model design through scalable production deployment, monitoring, and optimization using tools like PyTorch, Hugging Face, LangChain, Azure ML, and AWS SageMaker.

My recent work includes architecting an enterprise RAG platform, fine-tuning Llama-3 and Mistral models with LoRA and DeepSpeed to cut inference costs, and building multi-agent orchestration and high-throughput retrieval pipelines that serve hundreds of thousands of queries daily.

I continuously improve operational reliability and observability—implementing CI/CD, canary rollouts, and monitoring stacks (W&B, Prometheus, Grafana)—and I seek roles where I can apply scalable LLM systems and MLOps best practices to drive measurable product impact.

Experience

Work history, roles, and key accomplishments

Current

Senior AI/ML Engineer

Current

Stepwise

Feb 2024 - Present (1 year 11 months)

Architected and delivered an enterprise RAG platform for healthcare and financial clients, fine-tuned Llama-3 and Mistral-7B to improve domain reasoning and reduced inference costs by 35%, and built multi-agent orchestration handling 200K+ daily queries.

RAG LLaMA Mistral Faiss Redis AWS Sagemaker DeepSpeed CI CD

Senior Machine Learning Engineer

Microsoft

Nov 2021 - Feb 2024 (2 years 3 months)

Developed BERT-based ranking models and hybrid semantic retrieval for search relevance on Azure ML, built scalable feature pipelines integrating clickstream and embeddings, and automated retraining and deployment with continuous monitoring.

BERT Faiss Azure Data Factory Azure Synapse Azure Cognitive Search PyTorch CI CD azure monitor

Machine Learning Engineer

7 Sensing Software

Sep 2018 - Oct 2021 (3 years 1 month)

Designed and deployed Airflow data pipelines and real-time image classification/OCR modules for edge devices, engineered device-to-cloud telemetry and managed edge model deployment with monitoring.

Airflow PostgreSQL TensorFlow OpenCV NVIDIA Jetson Docker Compose Prometheus NLP AI Model Deployment

ML Engineer

Upwork

Nov 2017 - Oct 2021 (3 years 11 months)

Delivered OCR-based identity verification pipelines, video compression and real-time scoring systems, and embedded acoustic detection prototypes, reducing manual processing and enabling real-time inference on edge devices.

TensorFlow OpenCV Tesseract YOLOv3 XGBoost Reinforcement Learning Raspberry Pi

Python Developer

Algolia

Feb 2017 - Sep 2018 (1 year 7 months)

Designed and optimized ETL pipelines with Python and Spark, managed Redshift and S3 data warehouses, and automated data workflows with Airflow to improve analytics reliability and reduce missing values.