Portrait of Doan Van Trung

Senior Fullstack Developer · Tech Lead

Doan Van Trung

Seeking a Senior Fullstack Developer or Tech Lead position where I can build scalable, cloud-native products and drive AI-augmented engineering — combining architecture, mentoring and hands-on agentic coding to raise team delivery speed and quality.

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01 — About

Building products, leading teams

Senior Fullstack Developer with 7+ years of experience building scalable web applications and enterprise systems using PHP (Laravel), Vue.js, Nuxt.js, and modern cloud technologies. Experienced in designing software architecture, RESTful APIs, database systems, and cloud infrastructure on AWS. Proven ability to lead development teams, mentor engineers, conduct code reviews, and collaborate with product owners, designers, QA, and stakeholders in Agile environments. Early and hands-on adopter of AI-assisted software engineering — leveraging agentic coding tools (Claude Code, Cursor, Codex) to accelerate delivery and independently ship production products.

7+

Years of experience

Thanh Xuan, Hanoi, Vietnam

Based in

02 — Skills

The tools I reach for every day

Backend

PHP (Laravel)RESTful APIAuthentication & AuthorizationAPI Documentation (Swagger/OpenAPI)WebSocket / SSE (Realtime & Streaming)QueueSchedulerWebhookPerformance OptimizationSQL OptimizationPHP (Laravel)RESTful APIAuthentication & AuthorizationAPI Documentation (Swagger/OpenAPI)WebSocket / SSE (Realtime & Streaming)QueueSchedulerWebhookPerformance OptimizationSQL Optimization

Frontend

Vue.js / Nuxt.jsReact.js / Next.jsTypeScriptJavaScript (ES6+)HTML5 / CSS3 / SCSSTailwind CSSBootstrapjQueryResponsive DesignVue.js / Nuxt.jsReact.js / Next.jsTypeScriptJavaScript (ES6+)HTML5 / CSS3 / SCSSTailwind CSSBootstrapjQueryResponsive Design

AI Engineering

LLM Integration (OpenAI, Claude, Gemini, OpenRouter, Deepgram)Prompt Engineering & Prompt WorkflowsStreaming / Function CallingRAG fundamentalsReal-time Speech-to-TextAgentic coding: Claude Code, Cursor, CodexSpec-driven AI developmentAI code review & automated refactoringLLM Integration (OpenAI, Claude, Gemini, OpenRouter, Deepgram)Prompt Engineering & Prompt WorkflowsStreaming / Function CallingRAG fundamentalsReal-time Speech-to-TextAgentic coding: Claude Code, Cursor, CodexSpec-driven AI developmentAI code review & automated refactoring

Database

MySQLPostgreSQLFirebase FirestoreMySQLPostgreSQLFirebase Firestore

Cloud & DevOps

AWS: EC2 / RDS / S3 / SES / SNS / CloudFront / Load Balancer / CloudWatch / Route53 / IAM / Auto Scaling GroupDockerNginx / Linux / Bash ScriptCI/CDGitHub ActionsAWS: EC2 / RDS / S3 / SES / SNS / CloudFront / Load Balancer / CloudWatch / Route53 / IAM / Auto Scaling GroupDockerNginx / Linux / Bash ScriptCI/CDGitHub Actions

Third-party Integration

FirebaseStripe / OnePay / Square PaymentApple / Google Play In-App PurchaseOAuthPush NotificationZalo OTPFirebaseStripe / OnePay / Square PaymentApple / Google Play In-App PurchaseOAuthPush NotificationZalo OTP

Soft Skills

Technical LeadershipSystem ArchitectureRequirement AnalysisProblem SolvingMentoringCode ReviewAgile/ScrumCross-functional CollaborationTechnical LeadershipSystem ArchitectureRequirement AnalysisProblem SolvingMentoringCode ReviewAgile/ScrumCross-functional Collaboration

03 — Experience

Where I've worked

Fabbi Joint Stock Company — Techlead Fullstack Developer

Aug 2019 — Present
  • Led fullstack development & system architecture for 10+ enterprise products (Laravel, Vue.js, Nuxt.js, Next.js) across HRTech, FinTech, E-commerce, Booking and AI domains.
  • Adopted AI-assisted development (Claude Code, Cursor, Codex) in daily workflow — feature scaffolding, AI code review and automated refactoring.
  • Designed RESTful APIs, database schemas and scalable backend services serving web, mobile and CMS platforms.
  • Implemented AI-powered features (OpenAI integration, prompt workflows) and integrated payment gateways (Stripe, Apple/Google IAP, Square).
  • Managed AWS infra (EC2, RDS, S3, CloudFront, ALB, Auto Scaling) with Docker + Nginx deployments; optimized performance via SQL tuning, indexing and caching.
  • Led a team of up to 5, mentored juniors, ran code reviews and technical planning in Agile/Scrum.

Fabbi Joint Stock Company — Techlead Fullstack Developer

Aug 2019 — Present
  • Led fullstack development & system architecture for 10+ enterprise products (Laravel, Vue.js, Nuxt.js, Next.js) across HRTech, FinTech, E-commerce, Booking and AI domains.
  • Adopted AI-assisted development (Claude Code, Cursor, Codex) in daily workflow — feature scaffolding, AI code review and automated refactoring.
  • Designed RESTful APIs, database schemas and scalable backend services serving web, mobile and CMS platforms.
  • Implemented AI-powered features (OpenAI integration, prompt workflows) and integrated payment gateways (Stripe, Apple/Google IAP, Square).
  • Managed AWS infra (EC2, RDS, S3, CloudFront, ALB, Auto Scaling) with Docker + Nginx deployments; optimized performance via SQL tuning, indexing and caching.
  • Led a team of up to 5, mentored juniors, ran code reviews and technical planning in Agile/Scrum.

Ows - Open WorkSpace — Fresher PHP

Feb 2019 — Jul 2019
  • Developed backend features using PHP and the CodeIgniter framework.
  • Built and maintained RESTful APIs for frontend and third-party integrations.
  • Developed responsive user interfaces using HTML5, CSS3, JavaScript, and Bootstrap.
  • Implemented CRUD functionalities and business logic based on project requirements.

Ows - Open WorkSpace — Fresher PHP

Feb 2019 — Jul 2019
  • Developed backend features using PHP and the CodeIgniter framework.
  • Built and maintained RESTful APIs for frontend and third-party integrations.
  • Developed responsive user interfaces using HTML5, CSS3, JavaScript, and Bootstrap.
  • Implemented CRUD functionalities and business logic based on project requirements.

Education

Posts and Telecommunications Institute of Technology (PTIT)

Bachelor of Engineering in Information Technology · Information Systems · 2014–2019

Posts and Telecommunications Institute of Technology (PTIT)

Bachelor of Engineering in Information Technology · Information Systems · 2014–2019

04 — Projects

Things I've built

BerryShot – Native macOS Screenshot / OCR / AI Utility

Jul 2026 — Present

Native macOS menu-bar productivity app: region & scrolling screen capture, rich annotation, 100% offline OCR, HEVC 60fps screen recording, real-time meeting transcription, a multi-model AI assistant, and cloud upload. Built by a 2-person team through AI-assisted "vibe coding".

Customer: Personal / Open-source side projectTeam: 2Role: Co-developer / Fullstack Developer
Swift 6SwiftUIAppKitScreenCaptureKitVisionAVFoundationSwiftDataOpenAIClaudeGeminiDeepgram

BerryShot – Native macOS Screenshot / OCR / AI Utility

Jul 2026 — Present

Native macOS menu-bar productivity app: region & scrolling screen capture, rich annotation, 100% offline OCR, HEVC 60fps screen recording, real-time meeting transcription, a multi-model AI assistant, and cloud upload. Built by a 2-person team through AI-assisted "vibe coding".

Customer: Personal / Open-source side projectTeam: 2Role: Co-developer / Fullstack Developer
Swift 6SwiftUIAppKitScreenCaptureKitVisionAVFoundationSwiftDataOpenAIClaudeGeminiDeepgram

Renew ECS

Jun 2026 — Present

Rebuilt an internal Enterprise Collaboration System (ECS) from the ground up based on existing business workflows. Leveraged AI throughout the software development lifecycle to transform business requirements into design artifacts and accelerate UI development.

Customer: Internal ProjectTeam: 7Role: Fullstack Developer
LaravelPHPNext.jsReactMySQL

Renew ECS

Jun 2026 — Present

Rebuilt an internal Enterprise Collaboration System (ECS) from the ground up based on existing business workflows. Leveraged AI throughout the software development lifecycle to transform business requirements into design artifacts and accelerate UI development.

Customer: Internal ProjectTeam: 7Role: Fullstack Developer
LaravelPHPNext.jsReactMySQL

AI Horoscope Platform

Apr 2025 — Jun 2026

AI-powered astrology platform that provides personalized horoscope analysis, birth chart calculations, AI-generated interpretations, subscription services, affiliate marketing, QR campaign management, and CMS administration.

Customer: VietnamTeam: 4Role: Team Leader / Senior Fullstack Developer
LaravelPHPVue.jsNuxt.jsMySQLAWSDockerOpenAI

AI Horoscope Platform

Apr 2025 — Jun 2026

AI-powered astrology platform that provides personalized horoscope analysis, birth chart calculations, AI-generated interpretations, subscription services, affiliate marketing, QR campaign management, and CMS administration.

Customer: VietnamTeam: 4Role: Team Leader / Senior Fullstack Developer
LaravelPHPVue.jsNuxt.jsMySQLAWSDockerOpenAI

Racool – Plantation Management

Dec 2024 — Apr 2025

Plantation management platform with real-time disaster alert integration.

Customer: JapanTeam: 20Role: Fullstack Developer
LaravelPHPVue.jsNuxt.jsMySQLAWS

Racool – Plantation Management

Dec 2024 — Apr 2025

Plantation management platform with real-time disaster alert integration.

Customer: JapanTeam: 20Role: Fullstack Developer
LaravelPHPVue.jsNuxt.jsMySQLAWS

AutoStyle E-commerce Platform

May 2020 — Nov 2022

E-commerce platform for managing automotive accessories, suppliers, inventory, and multi-channel sales across Yahoo Shopping and Rakuten.

Customer: JapanTeam: 8Role: Fullstack Developer
LaravelNuxt.jsPostgreSQLVue.js

AutoStyle E-commerce Platform

May 2020 — Nov 2022

E-commerce platform for managing automotive accessories, suppliers, inventory, and multi-channel sales across Yahoo Shopping and Rakuten.

Customer: JapanTeam: 8Role: Fullstack Developer
LaravelNuxt.jsPostgreSQLVue.js

Other Commercial Projects

Various

Delivered and maintained multiple commercial web applications across various business domains.

Customer: JapanRole: Fullstack Developer
LaravelPHPSymfonyVue.jsNuxt.jsNext.jsJavaScriptTypeScriptMySQLPostgreSQLAWSDockerFirebase

Other Commercial Projects

Various

Delivered and maintained multiple commercial web applications across various business domains.

Customer: JapanRole: Fullstack Developer
LaravelPHPSymfonyVue.jsNuxt.jsNext.jsJavaScriptTypeScriptMySQLPostgreSQLAWSDockerFirebase

05 — Contact

Get in touch

trungdv171296@gmail.com https://trungdv.io.vn

Thanh Xuan, Hanoi, Vietnam