Mobile app development
Cross-platform iOS and Android apps in Flutter, from first prototype to App Store and Google Play release. The same approach powers 12 live apps used by 850K+ learners.
FlutterDartFirebaseIn-app purchases
Services
Software outsourcing & freelance development from Vietnam.
Tran Quang is a freelance software developer in Ho Chi Minh City, Vietnam. With 5+ years in .NET, Azure and mobile development, I build and ship mobile apps, APIs, web applications and cloud infrastructure for startups and companies, as a fixed-scope project or as an extension of your team.
- Experience
- 5+ years
- Learners
- 850K+
- Apps shipped
- 12
- Time zone
- UTC+7
What I do
Software development services
Backend & API development
Secure, documented REST APIs and background services in .NET and NestJS, with SQL and NoSQL data models designed to scale.
.NET CoreNestJSMongoDBRedis
Web application development
Fast, SEO-friendly websites and web apps in Next.js and React: marketing sites, dashboards and internal tools.
Next.jsReactTypeScriptTailwind CSS
Cloud & DevOps
Azure and AWS architecture, CI/CD pipelines, containers and cost-aware infrastructure so releases are repeatable and safe.
AzureAWSDockerKubernetesGitHub Actions
AI feature integration
Add speech, translation, vision and LLM features to an existing product with Azure OpenAI and other AI services.
Azure OpenAIAzure AI SearchSpeechTranslator
Software maintenance & rescue
Take over an existing codebase: audit it, fix production issues, upgrade frameworks and document it for the next developer.
Code reviewRefactoringUpgradesMonitoring
How we can work
Engagement models
Fixed-scope project
A defined deliverable with a clear timeline and price, such as an MVP, a mobile app release or an API integration.
Freelance, part-time or full-time
Work embedded in your team for a set number of hours per week, with daily updates and your tools and processes.
Ongoing support
Monthly retainer for maintenance, new features, cloud operations and on-call help after launch.
Process
From brief to launch in four steps
- 01
Brief
You share goals, users and constraints. I reply with questions and a first estimate.
- 02
Plan
We agree scope, milestones, tech stack and how we will communicate.
- 03
Build
Short iterations with working builds you can test, not a big reveal at the end.
- 04
Launch
Store submission, deployment, monitoring and a hand-over with documentation.
FAQ
Working together: common questions
What kind of software outsourcing do you offer?
I take on mobile apps, backend APIs, web applications, cloud and DevOps work, and AI features for startups and companies. I have 5+ years of professional experience and have shipped 12 apps that 850K+ learners use.
Can I hire you as a freelance developer?
Yes. I work as a freelance developer on fixed-scope projects, part-time or full-time engagements, and ongoing support. Send a short brief through the contact page and I will reply with questions and an estimate.
Where are you based and which time zone do you work in?
I am based in Ho Chi Minh City, Vietnam (UTC+7). Overlap with Asia, Australia and Europe is easy, and I schedule calls for the part of your day that suits you.
Which technologies do you work with?
Flutter for mobile; .NET Core and NestJS for backend; Next.js and React for web; Azure and AWS with Docker, Kubernetes and CI/CD for infrastructure.
How much does a project cost?
It depends on scope, complexity and timeline. After a short brief I give a written estimate, either fixed price for a defined scope or an hourly or monthly rate for open-ended work.
Can you take over an existing codebase?
Yes. I start with a code and infrastructure review, list the risks, then fix, upgrade and document the system in agreed steps.
Nhận gia công phần mềm & làm freelance
Mình là Trần Quang, lập trình viên freelance tại TP. Hồ Chí Minh với hơn 5 năm kinh nghiệm. Mình nhận gia công phần mềm: ứng dụng mobile (Flutter), API backend (.NET, NestJS), website (Next.js), triển khai Azure/AWS và CI/CD. Mình làm theo dự án trọn gói, theo giờ hoặc theo tháng, và đã phát hành 12 ứng dụng với hơn 850K+ người dùng. Liên hệ để được tư vấn và báo giá.
Working on something?
Share a short brief with your goal, timeline and budget range, and I will reply with questions and an estimate.