You will get Backend Developer – Node.js - NestJS - TypeORM - SQL -NoSQL
Project details
🚀 Every project has unique challenges—let’s chat on Upwork so I can give you a tailored estimate, timeline, and the best backend architecture for your vision. 🚀
Need a high-performance backend to power your app? I specialize in scalable APIs and secure systems using Node.js, NestJS, MySQL, PostgreSQL, and MongoDB. Whether you’re building from scratch or upgrading an existing backend—I’ve got you covered.
🛠️ Backend Services I Offer:
• 🧩 REST, GraphQL & WebSocket APIs
• 🔒 Auth – JWT, OAuth2, Role-based access
• 🗄️ MySQL, PostgreSQL, MongoDB, TypeORM
• 🛠️ NestJS Microservices Architecture
• 🧹 Code Refactoring & Optimization
• 📦 Stripe, Firebase, Twilio integrations
• 📊 ELK & OpenSearch logging
• ⚙️ Docker, GitHub Actions & cloud CI/CD
🏷️ Industries I Serve:
• 🧠 HealthTech • 💬 Real-time chat
• 🛒 eCommerce • 🚄 Logistics
• 🧾 Admin Panels • 🎓 EdTech
💬 Let’s talk about your backend goals—send a message to get started!
Need a high-performance backend to power your app? I specialize in scalable APIs and secure systems using Node.js, NestJS, MySQL, PostgreSQL, and MongoDB. Whether you’re building from scratch or upgrading an existing backend—I’ve got you covered.
🛠️ Backend Services I Offer:
• 🧩 REST, GraphQL & WebSocket APIs
• 🔒 Auth – JWT, OAuth2, Role-based access
• 🗄️ MySQL, PostgreSQL, MongoDB, TypeORM
• 🛠️ NestJS Microservices Architecture
• 🧹 Code Refactoring & Optimization
• 📦 Stripe, Firebase, Twilio integrations
• 📊 ELK & OpenSearch logging
• ⚙️ Docker, GitHub Actions & cloud CI/CD
🏷️ Industries I Serve:
• 🧠 HealthTech • 💬 Real-time chat
• 🛒 eCommerce • 🚄 Logistics
• 🧾 Admin Panels • 🎓 EdTech
💬 Let’s talk about your backend goals—send a message to get started!
Programming Languages
JavaScript, TypeScript, GoCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$19
|
Standard
$99
|
Advanced
$199
|
|---|---|---|---|
| Delivery Time | 2 days | 5 days | 7 days |
Number of Revisions | 1 | 3 | 5 |
Design Customization | |||
Content Upload | |||
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Additional Revision
+$10Frequently asked questions
11 reviews
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GT
Gabe T.
Jan 10, 2026
Vibe Coding Developer Needed for Bug Fixes in Base44
nice guy... he just had too much going on at this time to work on our project even though he took it on.
AW
Aruna W.
Aug 28, 2025
Make.com AI-Powered LinkedIn Post Automation
Mayantha did an excellent job setting up a complete LinkedIn automation system for us using Make.com and OpenAI. He designed the entire workflow from content generation to automatic posting and added an approval step so we can review posts before they go live. The integration with LinkedIn, Airtable, and Google Sheets works perfectly, and the whole process runs smoothly without manual effort. His understanding of automation, AI, and APIs is impressive, and he delivered exactly what we needed on time. Highly recommended!
VH
Vanessa H.
Jul 28, 2025
React Native developer needed
Great to have work with Mayantha
professional developer! Looking forward to be working with him again!
professional developer! Looking forward to be working with him again!
JR
Jurg R.
Jul 25, 2025
Price Monitoring and Comparison Specialist
MC
Mauricio C.
Jul 25, 2025
Develop a small React Native App using Expo. Only 3 flows for now
Mayantha delivered good work on this React Native development project and I enjoyed working with him. His communication was top-notch, he met all deadlines, and his skills were reasonably strong. I enjoyed working with Mayantha and will likely have additional jobs for him in the future.
About Mayantha
Full Stack Web, Mobile Developer | NodeJS ReactJS React Native NestJs
83%
Job Success
Athurugiriya, Sri Lanka - 5:00 am local time
Tired of chasing developers who overpromise and underdeliver?
I’m MJ, a battle-tested Full Stack Developer & Technical Lead with 8+ years of experience owning product delivery from idea to deployment. I don’t just write code, I lead architecture, hire teams, drive sprints, and launch cloud-native platforms that scale.
Whether you’re launching an MVP, scaling a SaaS product, or rebuilding a legacy system, I bring full-stack firepower and hands-on leadership to get it done.
🔧 What I Do Best
• End-to-end product ownership — from scoping to deployment
• Full-stack development: React, Next.js, Node.js, NestJS, React Native, PostgreSQL, MongoDB, MySQL, Python, PHP
• Cloud-native architecture on AWS, GCP, Azure
• DevOps & CI/CD: Docker, Kubernetes, GitHub Actions, GitLab CI
• Microservices, API design (REST, GraphQL), real-time apps (WebSockets)
💼 Trusted Across Industries
HealthTech, EdTech, Government Platforms, Smart Homes, E-commerce
✅ Why Clients Choose Me
• Clean, testable, well-documented code
• Strong communication & delivery accountability
• Real leadership, not just execution
🎁 Want Proof First?
Happy to start with a free trial task, low risk, high reward.
Steps for completing your project
After purchasing the project, send requirements so Mayantha can start the project.
Delivery time starts when Mayantha receives requirements from you.
Mayantha works on your project following the steps below.
Revisions may occur after the delivery date.
Quick chat and get to know each other
Define scope, and milestones