Open to opportunities

Khang Nguyễn

@khangnguyn

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Senior backend engineer building PHP/Node.js microservices and AWS serverless solutions with AI automation.

Vietnam

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What I'm looking for

I’m looking for a backend role where I can lead and build reliable AWS/Azure microservices and AI automation (RAG/agent workflows), improving latency, reliability, and cloud cost efficiency with a strong engineering team.

I’m a Senior Backend Software Engineer with 6+ years building PHP/Node.js systems, AWS serverless infrastructure, and microservices across automotive, healthcare, finance, and enterprise platforms. I led a 4-engineer team to deliver an AI-powered RAG chatbot for a financial institution within 3 months, while driving reliability, latency, and cloud cost efficiency. I’ve optimized APIs and reporting pipelines and consistently focused on performance outcomes—such as reducing latency by 40% and supporting a target scale of 100,000 users.

I bring strong hands-on depth across Laravel, Yii2, and Symfony, plus Node.js and TypeScript, and I’ve implemented microservices using REST APIs, serverless, and event-driven architectures. My cloud and platform work spans AWS (Lambda, ECS, EC2, API Gateway, CloudFormation, CloudWatch), Azure (EntraID, Azure Functions, Blob Storage), and DevOps tooling like Docker and CI/CD (Jenkins, GitHub Actions, GitLab Webhooks, TeamCity). I also integrate AI-assisted engineering workflows and RAG/agent workflows using Claude Code, Cursor, MCP, N8N, and prompt engineering to accelerate delivery without sacrificing engineering quality.

Experience

Work history, roles, and key accomplishments

Team Leader / Backend Software Engineer

Pascalia Asia Co

Dec 2024 - Feb 2026 (1 year 2 months)

Led a 4-engineer team to deliver an AI-powered RAG chatbot for a financial institution within 3 months and designed Azure-based microservices with EntraID authentication. Built AWS infrastructure and migrated a coupon system from Lambda to ECS, improving scalability, reliability, and reducing latency by 40%.

Part-time Backend Engineer

Freelance / Contract Projects

Nov 2021 - Apr 2025 (3 years 5 months)

Delivered backend and cloud-based solutions for Japanese healthcare clients as an independent contractor. Contributed to Pointerpro’s survey management and reporting platform and built and maintained Laravel/Drupal/Node.js services with MySQL and microservices architecture.

Laravel Drupal AWS Serverless MySQL Microservices

PHP Software Engineer

Keyloop

Dec 2023 - Dec 2024 (1 year)

Architected automotive platforms for global brands and integrated 3D car model visualizations to increase dealer sales efficiency by 20%. Integrated payment gateways and optimized API performance, reducing infrastructure costs by 15% using AWS serverless technologies.

PHP Symfony TypeScript Angular AWS AWS Cloudwatch SST Docker Jenkins Microservices API Performance Payment Gateways

Software Developer

FPT Telecom

Feb 2020 - Oct 2021 (1 year 8 months)

Developed a high-impact HDI microservice for HiFPT (platform serving over 5M users) to improve operational scalability. Launched an insurance service processing 1,000+ transactions within 30 days and improved API response times by 35% using Redis caching.

Lumen Laravel RESTful APIs Redis Microservices

Education

Degrees, certifications, and relevant coursework

Amazon Web Services (AWS)

AWS Solution Architect - Associate (SAA-C003), AWS

Achieved the AWS Solution Architect - Associate certification (SAA-C003).

Microsoft

MS Azure Fundamentals, Microsoft Azure

Completed the MS Azure Fundamentals certificate.

Scaled Agile, Inc. (SAFe)

SAFe Practitioner Certification, Agile (SAFe)

Completed the SAFe Practitioner certification.

University of Information Technology - VNU

Bachelor of Engineering, Information Technology

2017 - 2021

Activities and societies: Side projects: HealthCheck (server status tracking for 50+ servers, proactive alerts) using PHP, AWS CloudWatch, DynamoDB; Finance Agent (AI expense management with insights and alerts).

Earned a Bachelor of Engineering in Information Technology from the University of Information Technology - VNU (HCMC). Built side projects including a server monitoring tool (HealthCheck) and an AI-powered expense management assistant.