I will build a custom CRM, erp, saas, or business web application


About this gig
Looking for a reliable developer to build your custom CRM, ERP, SaaS platform, or business web application from scratch? You're in the right place.
WHAT I BUILD
CRM systems leads, pipelines, contacts, follow-ups, activity logs
ERP platforms inventory, HR, payroll, attendance tracking, reporting
SaaS apps multi-tenant architecture, subscription billing, user management
Admin dashboards, client & vendor portals, booking & scheduling systems
️ TECH STACK
React.js, Next.js (App Router), TypeScript, Tailwind CSS, shadcn/ui
Node.js, Express.js, MySQL, PostgreSQL, Drizzle ORM, Prisma
NextAuth, role-based permissions (RBAC), Vercel, VPS, cPanel
REAL SYSTEMS BUILT
Full ERP/PMS project management, client portal, RBAC, rich text editor
GPS-verified payroll system per-minute salary, break tracking, Excel export
Leads dashboard pipelines, date filters, custom design system
️ WHY CHOOSE ME
Full stack I handle frontend, backend, database, and deployment
Clean, well-commented code responsive and mobile-friendly by default
Daily updates, no surprises, source code included in every package
Message me before ordering I'll confirm your scope and timeline.
Respect third-party rights
Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.
Get to know Shehroz K
Full Stack Developer Web Apps APIs Automation Scalable Solutions
- FromPakistan
- Member sinceAug 2025
Languages
English
FAQ
What type of systems do you specialize in?
I specialize in custom CRM systems, ERP platforms, SaaS applications, admin dashboards, client portals, and business management tools. I've built real production systems — including a full ERP/PMS platform with project management and client portal, a GPS-verified payroll and attendance system, and a
What technologies do you use to build these systems?
My core stack is React.js, Next.js (App Router), TypeScript, Tailwind CSS, shadcn/ui on the frontend — and Node.js, Express.js, MySQL, PostgreSQL with Drizzle ORM or Prisma on the backend. I use NextAuth for authentication and deploy to Vercel, VPS, or cPanel.
Will I receive the full source code after delivery?
Yes — every delivery includes the complete source code with no lock-in. You own everything after the project is delivered. The code is clean, commented, and structured so your own team can maintain or extend it after delivery.
Can you build a system with multiple user roles and permissions?
Absolutely. Role-based access control (RBAC) is a core part of almost every system I build. I can design custom permission layers for any roles you need — Admin, Manager, Employee, Client, Vendor, or any combination — with each role seeing and accessing only what they're supposed to.
Can you integrate payment gateways or third-party services?
Yes. I regularly integrate Stripe, PayPal, and local payment gateways, along with email services like SendGrid and Resend, Google APIs, Twilio for SMS, and any custom REST API your business uses. Payment integration is available as a gig extra if not included in your package.
Do you handle deployment and hosting setup?
Yes. Deployment guidance is included in all packages. Full deployment — including environment setup, domain connection, and production configuration — is included in the Standard and Premium packages. I've deployed production apps on Vercel with cron jobs, timezone handling, and proper environment c
How do revisions work and what do they cover?
Revisions cover changes within the originally agreed scope — UI adjustments, logic fixes, or minor feature tweaks. New features or functionality outside the initial scope are quoted separately. This keeps the timeline fair and delivery predictable for both sides. Need more revisions? You can add the
How will we communicate during the project?
I send progress updates every 1–2 days via Fiverr messages so you always know exactly where things stand. For larger projects I share a milestone breakdown at the start so you can track each phase. You'll never be left wondering what's happening.
Can you work on my existing codebase or add features to a live system?
Yes — I can add features, fix bugs, refactor, or extend existing React, Next.js, or Node.js projects. Share your repository or codebase details before ordering and I'll review the scope and give you an honest assessment of what's involved.
Can we work together on an ongoing basis after the project is delivered?
Definitely. I'm available for ongoing maintenance, new feature development, bug fixes, and monthly retainers. Many clients come back for phase 2 and beyond — long-term collaboration is something I actively welcome and plan for from the start of every project.

