I will build custom saas web applications, CRM software, erp systems, business web app


About this gig
Hello,
Is your business still relying on spreadsheets, disconnected tools, manual data entry, or software that doesnt fit your workflow?
I build custom SaaS web applications, CRM software, ERP systems, and business web applications designed around your actual business needs.
I can help you:
- Build a SaaS MVP or complete platform
- Replace spreadsheets or outdated software
- Create custom CRM and ERP systems
- Automate repetitive business workflows
- Integrate APIs, payment gateways, and third party tools
- Build dashboards, portals, authentication, roles, and permissions
- Fix, upgrade, or extend existing applications
My services include:
- SaaS development
- CRM development
- ERP development
- database design
- API integration
- automation
- dashboards
- authentication
- payment integration
- and deployment.
Whether you need an MVP, custom business software, or improvements to an existing application, I focus on solving the business problem not just writing code.
Send me your requirements, existing system, or rough idea, and lets discuss the right solution.
Get to know THOMAS MARTIN
AI DEVELOPER
- FromFrance
- Member sinceSep 2026
- Avg. response time1 hour
Languages
English, French, Spanish, German, Italian
FAQ
Can you build a custom SaaS application from scratch?
Yes. I can build a custom SaaS web application around your business idea, workflow, users, features, database, dashboards, integrations, and other required functionality.
Can you build a custom CRM or ERP system?
Yes. I can develop custom CRM and ERP software for areas such as customers, leads, sales, inventory, employees, operations, reporting, and business management.
Can you build an MVP for my SaaS idea?
Yes. I can turn your idea or workflow into a functional SaaS MVP. If your requirements are larger than the selected package, I can provide a custom offer based on the actual scope.
Can you integrate APIs or third-party services?
Yes. I can integrate APIs and supported third-party services such as payment gateways, external databases, communication tools, and other business systems.
Can you add automation to my CRM or ERP?
Yes. I can automate repetitive workflows, notifications, data processes, status changes, and other tasks based on your requirements.
Can you fix or improve an existing web application?
Yes. I can troubleshoot bugs, improve existing functionality, add new features, integrate APIs, or make changes to an existing SaaS, CRM, ERP, or business application.
Will my application work on mobile and desktop?
Yes. The applications I build are designed to be responsive so users can access the system across desktop, tablet, and mobile screens.
Can you create different user roles and permissions?
Yes. I can implement authentication, user accounts, roles, permissions, and access levels according to your application's requirements.

