Doan Quang Kien
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Doan Quang Kien

Turning ideas into technology

Available for work 10 Years Experience Quy Nhon City
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— INTRODUCTION —

About Me

Passionate about technology, focusing on quality and user experience

LocationQuy Nhon City, Vietnam
Birth Year1994
EducationQuy Nhon University
StatusAvailable for work
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Years Exp
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Hi, I'm Kien 👋

With over 10 years of experience in software development, I specialize in building highly scalable web applications and elegant user interfaces.

My approach combines technical excellence with a deep understanding of user experience, ensuring that every product I build not only functions perfectly but also delights its users.

When I'm not coding, you can find me exploring new technologies, writing technical blogs, or contributing to open-source projects.

Contact Me GitHub

— EXPERTISE —

My Skills

Technologies and tools I use every day

Frontend Development
Next.js90%
React.js85%
TypeScript90%
Tailwind CSS90%
HTML/CSS95%
Backend Architecture
Node.js80%
Express.js80%
NestJS75%
Python / FastAPI70%
GraphQL80%
DevOps & Cloud
PostgreSQL85%
Prisma ORM90%
Redis75%
Docker80%
Supabase85%
Tools & Others
Git / GitHub80%
REST API Design90%
Figma70%
CI/CD75%
Agile / Scrum85%

— PORTFOLIO —

Featured Projects

Products I'm proud to have built

Sirimi E-commerce

A free e-commerce website platform for general users with 20+ product themes.

Next.js NestJS PostgreSQL Redis Docker
Web App E-commerce
GitHub
FortiKey

A state-of-the-art Password Management platform built on Zero-Knowledge Architecture, featuring military-grade AES-256-GCM encryption and blazing-fast Serverless infrastructure.

Next.js Turborepo Prisma ORM PostgreSQL Tailwind CSS Auth.js
Zero-Knowledge Serverless
Visit Site
KIRISI AI Assistant

An intelligent AI assistant specialized in domain name (.com) search, verifying availability directly via APIs in real-time. Capable of processing up to 20 domains in a single prompt.

Next.js AI Agents Upstash Redis Supabase Tailwind CSS
AI Assistant Domain Search
Visit
BlueOps Secure Comm

A real-time communication system engineered exclusively for Cybersecurity Defense Teams (Blue Team). Built on Zero-Trust architecture and End-to-End Encryption (E2EE).

NestJS WebSockets Redis Pub/Sub PostgreSQL E2EE Encryption
CyberSec Internal
GitHub
GrayHat Security Toolkit

An automated security auditing platform combining SAST/DAST vulnerability scanning with AI-powered report generation. *(Note: For security and confidentiality reasons, the core backend stack is hidden. The provided link is purely a UI Concept Preview).*

Nuclei (DAST) Semgrep (SAST) TruffleHog BullMQ Opus 4.7
Security Concept UI
GitHub
Sirimi Dashboard

A centralized management dashboard engineered for custom-built e-commerce platforms. Delivers a comprehensive sales management solution, freeing businesses from dependency on ecosystem builders like WIX, WordPress, or Shopify.

Next.js Turborepo Prisma ORM Tailwind CSS AI Integration
Dashboard SaaS
Visit

— JOURNEY —

Work Experience

Places I've worked and contributed

Full Stack Developer
Independent Freelancer / Tech Consultant
2016 – 2020
  • Provided custom software development services for clients.
  • Standardized core programming mindset and built a solid foundation in data structures on the Java platform.
  • Applied practical distributed system architectures and microservices to commercial projects.
Software Engineer
VNG Corporation
2020 – 2023
  • Participated in developing and optimizing user interfaces for large-scale web applications within the corporate ecosystem.
  • Researched and applied containerization technology with Docker to deployment workflows and system optimization.
  • Collaborated closely with the product team to transform complex designs into performance-optimized source code.
Full Stack Developer
Global CyberSoft
2023 – 2025
  • Designed, managed, and optimized SQL/NoSQL database architectures for enterprise-level projects.
  • Migrated and elevated systems to AWS cloud infrastructure to optimize costs and load-bearing capacity.
  • Developed core payment processing modules and handled quality assurance (Testing) for E-commerce products.
Full Stack Freelancer
Global Freelancer
2025 – Present
  • Provided comprehensive e-commerce development solutions for international clients and established system security standards.
  • Built and customized specialized Themes/Plugins to optimize page load speeds and SEO according to global standards.
Founder & Technical Lead
Sirimi E-commerce
2026 – Present
  • Architected and operated the Sirimi E-commerce platform, integrating Artificial Intelligence (AI) to automate operational workflows.
  • Democratized technology by providing minimalist web creation solutions, enabling small business owners to easily manage independent digital storefronts.

— EDUCATION —

Degrees & Certifications

My journey of continuous learning and professional development

Bachelor of Information Technology

Quy Nhon University
2012 – 2016 · GPA: 3.4 / 4.0

Majored in Software Engineering. Graduated with honors with a graduation thesis on distributed systems and microservices.

Professional Certifications

Oracle Certified Associate: Java SE 8 Programmer
Associate · 2018
Docker Certified Associate
Associate · 2021
AWS Certified Solutions Architect – Associate
Associate · 2024
Google Cybersecurity Certificate
Certificate · 2025

— CONNECT —

Get in Touch

Let's build something amazing together

Send me a message

Contact Information

I'm always open to interesting conversations, collaboration opportunities, and meaningful projects.

Emailadmin@doanquangkien.com
Phone+84 901 454 ***
AddressQuy Nhon City, Vietnam
ResponseWithin 24 hours