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Title: Principal SaaS Development Company Required – Convert Completed HTML CRM/TMS Into Production SaaS Platform We are looking for an experienced software development company only. Individual freelancers, beginners, and small temporary teams should not apply. We already have a complete HTML-based CRM/TMS prototype with UI, workflows, dashboards, forms, modules, and business logic completed. This is not a new build project. Your responsibility is to convert the existing HTML application into a secure, scalable, production-ready SaaS platform while preserving all current features. Scope of work: 1. Frontend Migration * Convert existing HTML/CSS/JavaScript into: * [login to view URL] * React * TypeScript * Tailwind CSS Requirements: * Keep existing UI structure * Maintain all screens * Convert pages into reusable components * Improve responsiveness and performance where needed 2. Backend Development Build a complete backend using: * NestJS * Node.js * TypeScript APIs Requirements: * Convert all frontend logic into backend services * Create secure APIs * Implement authentication * Role-based access control * Business workflow automation 3. Database Development Use: * PostgreSQL Create a complete database architecture for: * Companies * Users * Customers * Carriers * Loads * Tracking * Documents * Invoices * Payments * Reports * Audit history 4. SaaS Architecture Must support: * Multi-company accounts * Multi-user access * Permissions * Secure data separation * Cloud deployment * Future subscription model 5. Existing Features Migration Every current HTML feature must work: * Buttons * Forms * Dashboards * Reports * Calculations * PDF generation * User flows * Permissions No feature removal allowed. Deployment: * Vercel frontend * Supabase/cloud backend * PostgreSQL database Company requirements: * Must have SaaS development experience * Must provide previous SaaS projects * Must have frontend, backend, database, and QA resources * Must follow professional development standards * Must provide clean documentation Deliverable: A fully functional production SaaS CRM/TMS platform ready for real customers. Apply only if your company can handle complete enterprise SaaS development from existing HTML to launch.
Project ID: 40562477
108 proposals
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108 freelancers are bidding on average $1,543 USD for this job

With over a decade of experience in full-stack architecture and high-scale systems, I understand the importance of converting your HTML CRM/TMS prototype into a secure, scalable SaaS platform. As a seasoned professional with a background in handling complex projects for over 1 million users, I am well-equipped to tackle the challenges of your project. My strategic insight for this conversion would be to focus on building a robust backend using NestJS and Node.js to ensure seamless integration with the frontend while maintaining security and scalability. In a similar project, I successfully migrated a Telegram Mini App for over 1 million users, showcasing my ability to handle high-traffic applications effectively. I invite you to reach out so we can discuss the specifics of your project and create a roadmap for its successful execution. Let's work together to transform your HTML CRM/TMS into a fully functional SaaS platform that meets all your requirements and exceeds your expectations.
$1,200 USD in 20 days
8.6
8.6

Hi there, We’ve developed multiple enterprise-level SaaS products, including a fully functional CRM that’s now used by 1,000+ active users. We understand the importance of building a secure, scalable, and production-ready platform, and we’re committed to delivering a solution that meets your business goals. We can handle both front-end and back-end development, as well as DevOps, so you won’t need to manage multiple resources. We also provide dedicated QA experts to ensure that every feature is thoroughly tested and works as intended. Let’s schedule a 10-minute introductory call to discuss your project in more detail and see if I’m the right fit for your needs. I’m looking forward to hearing more about your exciting project. Best, Adil
$1,216.88 USD in 21 days
7.4
7.4

Hi there, We are excited about the opportunity to work with you on developing your website. With strong experience in both front-end and back-end development, We can build a robust, scalable, and user-friendly platform that supports all the core features you’re looking for and tailored as per your requirement. Why Us? • 10+ years of experience in full-stack development • Built several website in all kind of domain platforms (portfolio available on request) • Strong grip on user flows, admin control, and clean UI/UX design • Expertise in PHP, JavaScript, MySQL, HTML/CSS, Laravel and modern frameworks Timeline & Estimate: Depending on final scope after the detail discussion with you We’d love to discuss your vision further and share relevant portfolio examples. Let’s build something powerful together! Looking forward to your response. Best regards, Vishal Nasit
$750 USD in 25 days
6.3
6.3

Being a SaaS-focused software development company, we at SoftwareLinkers are the perfect fit for your enterprise-grade project. Our broad array of skills including API, Database Development and HTML have made us the trusted partners for clients across different industries, just like yours, including those in logistics and operations - aligning perfectly with your needs. Our approach to projects is not just about writing code; it's about understanding your business objectives and delivering solutions that make a real impact. From planning to deployment and support, we work as long-term technical partners so you won't only be getting a one-off solution but a long-term collaborative relationship.
$1,300 USD in 28 days
6.1
6.1

I understand you need to convert an existing HTML CRM/TMS prototype into a production-ready SaaS platform, preserving all current UI, workflows, dashboards, forms, modules, and business logic. I have successfully migrated similar complex client-facing applications from static prototypes to robust SaaS environments, including a recent project where I transitioned a legacy project management tool into a cloud-based subscription service, increasing user adoption by 25%. My approach will involve refactoring the HTML into a dynamic front-end using React, connected to a secure Node.js/Express API backend. Data will be managed in a PostgreSQL database. I will implement user authentication with JWT, robust error handling, and deploy the application to AWS using Docker containers for efficient management and deployment. The resulting platform will be production-ready, mirroring your existing feature set. What is the preferred hosting environment or specific cloud provider you have in mind for the SaaS deployment? Ready to start as soon as you confirm scope.
$1,275 USD in 21 days
5.1
5.1

Hi, I reviewed **CRM/TMS to SaaS Platform** and I'm confident I can deliver exactly what you're looking for. With hands-on experience in **JavaScript, Node.js, PostgreSQL, Backend Development, Frontend Development, API Development, Tailwind CSS**, I build professional, scalable, and user-focused solutions that are designed for performance and growth. I believe in clear communication, quality work, and on-time delivery. I'd love to discuss your project and share ideas that can add even more value. View some of my previous work: Looking forward to hearing from you.
$1,200 USD in 14 days
5.3
5.3

Hello, I’m interested in working on your project. I have strong experience in frontend and backend development, website customization, troubleshooting, and responsive design. I can quickly understand requirements and provide reliable results within the agreed timeline. Let’s discuss the details so I can suggest the best approach and begin immediately. Thanks.
$750 USD in 7 days
5.3
5.3

I understand you need a principal SaaS development company to convert your completed HTML CRM/TMS into a fully functional production platform. This requires expertise in SaaS architecture and frontend-backend integration. I have extensive experience converting static HTML projects into scalable SaaS platforms, ensuring smooth deployment and reliable operation. My technical skills include the key frameworks and tools necessary for this transition. My approach focuses on preserving your existing design while building a robust, production-ready backend. Happy to review your current setup and get this back to a stable state.
$1,125 USD in 7 days
3.8
3.8

Hi there ! Let's set meeting schedule for ur project more detail . The target result is zero feature loss clean data separation stable APIs and a SaaS build ready for customer onboarding The HTML CRM TMS will move into Next JS React Tailwind NestJS and PostgreSQL Each module will be traced from UI action to API service DB transaction permission rule and audit event That covers customers carriers loads tracking docs invoices payments reports calculations and PDF output Reusable FE components will cut duplicate code while validation RBAC and tenant guards protect each company QA will run regression tests across every btn form dashboard report and role Vercel plus Supabase will be configured for staging prod logs backups migrations and future subscriptions What is the current count of screens roles reports and core workflows so we can benchmark scope and delivery correctly Timeline : 40 days Total Budget : 1500 USD
$1,500 USD in 40 days
2.4
2.4

Proven single-developer converting HTML platforms to production SaaS. I have successfully migrated similar CRM/TMS systems
$800 USD in 7 days
2.3
2.3

I specialize in converting completed HTML CRM/TMS projects into fully functional SaaS platforms. I understand your need to transform your current work into a scalable production-ready product. With extensive experience in SaaS development and deployment, I have successfully transitioned complex CRM/TMS systems to cloud-based solutions that are reliable and user-friendly. My approach focuses on seamless integration, robust backend architecture, and thorough testing to ensure smooth production launch. I would love to chat more about your project!
$1,125 USD in 7 days
0.0
0.0

I can convert your completed HTML CRM/TMS into a fully functional SaaS platform. I understand you need a seamless transition from static HTML to a live, scalable application. I have extensive experience developing SaaS platforms from existing codebases while ensuring performance and security standards are met. My approach focuses on smooth deployment and scalable architecture. Happy to review your current setup and get this back to a stable state.
$1,125 USD in 7 days
0.0
0.0

Hey — saw your post about converting a completed HTML CRM/TMS into a production SaaS platform. A big pain point here is ensuring the CRM’s functionality translates smoothly to SaaS architecture without losing performance. Quick question: Is the current codebase modular enough for a seamless backend integration, or will it need refactoring? I’ve delivered several SaaS conversions from HTML apps before and know how to avoid common scaling and deployment pitfalls. Send over your code or a quick spec, and I’ll take a look today.
$1,125 USD in 7 days
0.0
0.0

I can convert your completed HTML CRM/TMS into a fully functional SaaS platform ready for production. I’ve led similar transformations, turning static applications into scalable, cloud-based solutions with secure user management and seamless integrations. My approach ensures smooth migration with a focus on performance, security, and a user-friendly experience. I prioritize clean code and modular architecture for easy future enhancements. Do you already have wireframes or a written spec for the SaaS-specific features?
$1,125 USD in 7 days
0.0
0.0

I can transform your completed HTML CRM/TMS into a fully functional SaaS platform tailored for production. I have extensive experience converting web applications into scalable SaaS products with a focus on performance and security. My approach ensures smooth migration while maintaining data integrity and user experience, setting a solid foundation for future enhancements. Quick question before I suggest an approach: Is this a fresh deployment or do you have existing user data that needs migration?
$1,125 USD in 7 days
0.0
0.0

I can convert your completed HTML CRM/TMS into a fully functional SaaS platform ready for production. I have experience developing scalable SaaS solutions from existing web applications, ensuring smooth migration and reliable performance. My approach focuses on maintaining your current features while enhancing security, multi-tenancy, and user management to fit SaaS requirements. Quick question before I suggest an approach: Are you looking for a full rebuild or an improvement on the current version?
$1,125 USD in 7 days
0.0
0.0

⭐ Hi there The main risk is moving every CRM and TMS workflow from browser logic into secure tenant safe services without losing current behavior Your HTML app already defines the screens dashboards forms calculations reports and permissions The first phase will map every feature and dependency Next JS React TypeScript and Tailwind will rebuild reusable FE components while keeping the same UI structure NestJS and PostgreSQL will handle auth RBAC loads carriers tracking invoices payments docs reports and audit history QA will test every btn form PDF calc role and user flow before prod launch Vercel and Supabase setup will include staging logs backups migrations and clean docs Could u confirm whether the prototype includes sample data plus written rules for load status billing and carrier workflows
$1,300 USD in 70 days
0.0
0.0

Srinagar, India
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