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Fiverr Pro
English
$
USD
I will build a scalable nodejs express backend for your web app
Kai He
About this gig
Build the Backend Your Business Deserves
Stop wasting time on unstable servers and patchwork code.
I architect scalable, secure, and lightning-fast Node.js backends that power real growth.
With 10+ years in full-stack development and 6+ years in architecture design, I dont just write code I design systems built to last.
My Strengths
- Scalable architecture: DDD · Microservices · Serverless
- Built for quality: TypeScript · Unit Testing · CI/CD-ready
- Database mastery: PostgreSQL · MySQL · MongoDB
- Design mindset: Modular architecture inspired by Java Spring
- Deep experience: 12+ years with Node.js, Express.js & NestJS
️What I Deliver
- RESTful API design & implementation
- Secure authentication (JWT / OAuth)
- Third-party API integration (Stripe, etc.)
- Data transformation (XML / JSON / Excel)
- Architecture review & performance optimization
Why Clients Trust Me
- Clean, testable, production-grade code
- Future-proof architecture from day one
- Fast response, clear communication, and reliable delivery
Lets build a backend that scales as fast as your vision.
Get to know Kai He
Kai He
- FromChina
- Member sinceJul 2022
- Avg. response time1 hour
- Last delivery1 week
Languages
English, Chinese
Technical Profile: Global Connectivity & Digital Strategy
A seasoned Digital Nomad with over 10 years of intensive IT experience across various sectors. My career has been defined by mastering the complexities of secure, global digital infrastructure and maintaining operational efficiency regardless of location.
I specialize in bypassing geographical limitations, offering expert-level proficiency in scientific networking protocols, advanced VPN configuration, and proxy optimization to ensure reliable, high-speed access to global information. I don't just use these tools—I troubleshoot and opt
FAQ
Can you work with both SQL and NoSQL databases?
Yes. My expertise includes MongoDB, MySQL, and PostgreSQL. I will recommend the best database schema based on your project's needs and provide efficient Database Integration.
Do you deliver the code with testing or professional standards?
Absolutely. All code is written using TypeScript best practices and includes detailed comments. Unit Testing is included in the Premium package (or available as an extra service).
Is user authentication included in your packages?
Basic does not include authentication. Standard and Premium packages include full user Authentication (JWT/OAuth), ensuring a secure backend from the start, following modern Security principles.
How will I receive the final code and how do we handle deployment?
All final code and configurations are delivered via Source Control (Git/GitHub). Deployment Assistance is available as a Premium feature or a paid extra service.
I need a payment system integrated. Which package covers this?
Third-party integrations (like Stripe or Twilio) are classified as System Integration and are covered under the Premium package. Please contact me first for a custom quote on complex integrations.
