I will develop custom saas web application or CRM system

J
jahid_hasan227
J
jahid_hasan227
Jahid Hasan
develop custom saas web application or CRM system
Full Screen
develop custom saas web application or CRM system
Full Screen
Full Screen
develop custom saas web application or CRM systemdevelop custom saas web application or CRM systemdevelop custom saas web application or CRM system

About this gig

Looking for a reliable developer to build your custom web application, CRM, ERP, or SaaS product?


I develop scalable, secure, and modern web applications with a strong focus on quality, performance, and maintainability. Whether you're building an MVP, a custom SaaS platform, CRM, ERP, or a business management system, I deliver reliable solutions tailored to your business goals using industry best practices.


What I can build:

  • Custom SaaS Applications
  • CRM & ERP Systems
  • Inventory & Stock Management
  • Admin Dashboards
  • Business Management Systems
  • REST APIs & Backend Services
  • Authentication & User Roles
  • Payment Gateway Integration
  • Third-party API Integration


My Technology Stack

  • React / Next.js
  • NestJS / Node.js
  • TypeScript
  • PostgreSQL
  • Prisma ORM
  • AWS (Lambda, S3, EC2, Cognito, CloudFront, RDS)
  • RESTful APIs
  • Docker 


Why Choose Me?

  • High-quality, scalable, and maintainable code
  • Modern, responsive, and user-friendly UI/UX
  • Secure architecture following industry best practices
  • Clear communication with regular progress updates
  • Well-structured source code with documentation
  • On-time delivery and long-term support


Every project is unique. Please contact me before placing an order.

  • Programming language

    • JavaScript

  • Expertise

    • Algorithms & Data structures
    • Performance
    • Security
    • Design
    • Databases

  • Frontend framework

    • Angular
    • Next.js
    • Nuxt.js
    • React.js
    • Tailwind CSS

  • Backend framework

    • Express.js
    • Fastify
    • NestJS
    • Next.js
    • Node.js

Get to know Jahid Hasan

Jahid Hasan

Full Stack AI Developer React NestJS LangChain OpenAI

  • FromBangladesh
  • Member sinceApr 2026
  • Avg. response time1 hour

  • Languages

    English
Hi, I’m a full-stack software engineer with 5+ years of experience building web, mobile, SaaS, microservices, and AI-powered solutions. I help startups, agencies, and businesses turn ideas into clean, scalable, production-ready software. My expertise includes: • React, Next.js, Angular • Node.js, NestJS, Python APIs • Microservices architecture • React Native mobile apps • OpenAI, LangChain, RAG, AI agents • AWS, Docker, CI/CD • PostgreSQL, MongoDB, Redis Why work with me? • 30+ projects delivered • Clean, maintainable code • Clear communication • Scalable architecture • Long-term support

My Portfolio

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