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Custom Web-Based Progressive Web Application (PWA) for Quotation, Sales & Payment Management IMPORTANT – PLEASE READ CAREFULLY This project must be developed on our company website / server. The system must be self-hosted 100% ownership of source code, database, and logic belongs to MODA Windows & Doors No SaaS, no subscriptions, no third-party quotation systems No licensed platforms that limit ownership Full access to code and deployment credentials is required If you cannot deliver a fully custom and self-hosted solution, please do not apply. Project Description We are looking for an experienced developer or development team to build a custom web-based Progressive Web Application (PWA) for: Quotation creation Sales management Payment tracking The system will be used internally by our sales team and admin, and must be secure, scalable, and easy to use. Development will be done step by step, starting with quotation and pricing features, and expanding later. User Roles Admin Full system control Create, edit, deactivate sales users Create and manage all price lists Define material, glass, mosquito net prices Define color surcharges and system surcharges Set discount limits per salesperson Manual pricing for special constructions View and export all quotations and payments Access all reports Delete records only with security code (no bulk deletion) Manage languages, backups, and system security Sales User Create and edit quotations Add window/door items Upload bank slips, photos, and warranty documents View only their own quotations and statistics Track quotation status, payments, and balances Sales users cannot: Edit price lists or pricing logic Delete records Access other users’ data Quotation Rules Each quotation has one fixed material and one fixed color Material and color are selected once Changing material or color requires a new quotation Old quotations remain archived and unchanged Editing a quotation generates a new quotation number Materials & Colors Materials uPVC Standard Aluminium Semi-Euro Aluminium Euro Aluminium Colors White (base price) Black (surcharge) Sahara / Bronze (surcharge) Wood finish (highest surcharge) Item Configuration (Windows & Doors) Each quotation may contain multiple items (W1, W2, D1, etc.). Each item includes: Mandatory drawing / schematic image Quantity (identical items only) Width & height (mm) Pricing calculated per square meter (m²) Opening Types Fixed Opening (in / out) Sliding Double opening Fixed + opening Glass Options 6mm, 8mm, 10mm Double glazing Laminated Frosted / clear / green Mosquito Net Options None Hinged Sliding Pleated Security stainless steel Pricing Logic All pricing based on m² Different base prices for fixed, opening, sliding, and doors Quantity automatically multiplies price Discounts limited by salesperson permission Manual pricing allowed for admin only Delivery Cost Calculated by distance (kilometers) Price per kilometer set by admin Automatically added to quotation total Payments & Status Quotation statuses: Quoted Deposit Paid Closed Finished Supports partial payments, for example: 40% advance 30% during production 30% on delivery Sales users upload bank transfer proof. Documents & Security Upload bank slips, photos, warranties Files visible only to uploader and admin Deletion requires security code Weekly automatic backups Non-editable PDF quotations, invoices, and receipts Additional Features Search quotations by customer name, phone, address, quotation number Store Google Maps / GPS location per quotation Multi-language system: English (master) Thai, Russian, Chinese, Greek, Turkish, Korean English shown first, translation below Out of Scope (Future Phase) Accounting & VAT automation ISO 9001 audit trail Warehouse & production modules Dealer / partner access ERP integration Who Should Apply Please apply only if you: Have experience building custom web applications or PWAs Understand pricing logic and role-based permissions Can deliver clean, documented source code Agree to full ownership transfer Can work with milestone-based payments
Project ID: 40197202
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103 freelancers are bidding on average $311 USD for this job

Hi there, I will provide a fully custom web-based Progressive Web Application developed exactly according to your requirements and hosted directly on your own server and company website. Before starting the project, we will sign an NDA, and you will have full access to the source code, database, deployment credentials, and system logic at all times. Development will be done step by step, and as the work progresses, you may release payments milestone by milestone, based on completed and approved features. Admin users will have full control over system settings, users, price lists, materials, colors, surcharges, discount limits, reports, languages, backups, and security. The application will include a fully custom pricing engine based on square-meter calculations, material types, opening styles, glass options, mosquito nets, quantities, delivery distance, and admin-defined pricing rules. The system will support partial payments, multiple payment stages, secure upload of bank slips and documents, and accurate tracking of balances and quotation statuses. Access to files and records will be strictly controlled, and the codebase will be clean, well-documented, and structured for future expansion. Looking forward to working with you on this project. Thanks, Rahul
$225 USD in 7 days
8.6
8.6

Hello Sir We propose to develop a fully custom, self-hosted Progressive Web Application (PWA) for MODA Windows & Doors, deployed on your own server with complete ownership of source code, database, and logic. The system will be built from scratch (no SaaS or licensed platforms) with secure role-based access for Admin and Sales users. Phase-wise development will start with quotation, pricing, and sales workflows, followed by payments, reports, and multi-language support. The solution will be scalable, well-documented, and delivered with milestone-based payments and full deployment access. Regards Harsh Thoriya
$350 USD in 7 days
8.4
8.4

Hello I will build a fully custom web-based PWA for MODA Windows & Doors directly on your server with full ownership of source code, database, logic. The system will manage quotations, sales, payments with role-based access for Admin and Sales users, secure document handling, automated backups. Features include multi-item quotations with materials, colors, glass mosquito net options, automatic pricing per m², discounts, delivery cost calculations, partial payments, and PDF generation. Advanced search, Google Maps location tracking and multi-language support (English + Thai, Russian, Chinese, Greek, Turkish, Korean) will be included. The system will be secure, scalable, responsive, fully documented and ready for milestone-based development. Future modules like ERP or accounting can be added later. Looking forward to discussing further. Have a nice day Talk soon Kamran
$280 USD in 8 days
8.4
8.4

⭐⭐⭐⭐⭐ Build a Custom PWA for Quotation, Sales & Payment Management ❇️ Hi My Friend, I hope you're doing well. I just reviewed your project requirements, and I see you are looking for a developer to build a custom web-based Progressive Web Application (PWA) for quotation, sales, and payment management. You need not look any further; Zohaib is here to help you! My team has completed 50+ similar projects, ensuring secure and scalable solutions tailored to your needs. We'll develop the application step by step, starting with quotation features and expanding later. ➡️ Why Me? I can easily create your custom PWA as I have 5 years of experience in web application development, specializing in sales management and payment systems. My skills include front-end and back-end development, database management, and security protocols. Additionally, I have a strong grip on technologies like JavaScript, HTML, CSS, and RESTful APIs. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. Looking forward to discussing this with you in chat. ➡️ Skills & Experience: ✅ Web Application Development ✅ Progressive Web Apps (PWA) ✅ Quotation Management ✅ Payment Processing ✅ User Role Management ✅ Database Design ✅ Security Implementation ✅ Front-End Development ✅ Back-End Development ✅ API Integration ✅ Multi-Language Support ✅ Documentation and Code Ownership Waiting for your response! Best Regards, Zohaib
$150 USD in 2 days
7.8
7.8

Hello dk416, I have carefully reviewed the project details for the Custom Web-Based Progressive Web Application for Quotation, Sales & Payment Management. With over 5 years of experience in developing custom web applications and PWAs, I am confident in my ability to deliver a secure, scalable, and user-friendly system for MODA Windows & Doors. My approach involves developing the system step by step, starting with quotation and pricing features and expanding as needed. I am committed to providing full ownership of the source code, database, and logic to ensure complete control and customization for your team. I have successfully implemented similar projects in the past, and I am well-versed in pricing logic, role-based permissions, and clean code practices. I am available for daily updates and open communication throughout the development process. Please find my portfolio for reference: https://www.freelancer.com/u/eDesignerExpert I look forward to discussing the project further and collaborating with you to bring this vision to life. Best regards, Ramneet
$100 USD in 1 day
7.6
7.6

Hi, thanks for your job posting. I can build a fully custom, self-hosted Progressive Web Application (PWA) for MODA Windows & Doors, handling quotation creation, sales management, and payment tracking directly on your company server. The system will include secure role-based access for Admin and Sales users, with full control over pricing logic, quotations, discounts, and multi-language support. Each quotation will support multiple items with configurable dimensions, opening types, glass options, mosquito nets, and automated pricing calculations. The platform will handle payments, partial deposits, and upload of bank slips, photos, and warranty documents with strict file-level access controls. Delivery costs will be automatically calculated based on distance, and all quotations, invoices, and receipts will be exportable as non-editable PDFs. Admins will have full system control, including backups, security, price lists, and user management, while Sales users can create and track quotations without accessing restricted data. The system will be scalable, cleanly coded, and delivered with complete source code, deployment credentials, and documentation to ensure full ownership. My goal is to provide a secure, efficient, and user-friendly internal tool tailored to your workflow, ready for phased expansion in the future. Best regards. Jijo
$250 USD in 7 days
7.4
7.4

Hi there, I'm excited about the opportunity to develop a custom web-based Progressive Web Application for MODA Windows & Doors. With extensive experience in creating secure and scalable web applications, I can ensure that your PWA for quotation, sales, and payment management will be tailored to your specific needs. My approach involves step-by-step development, starting with the quotation and pricing features, allowing for further expansion as required. I’ll ensure full ownership of the source code and database, adhering strictly to your criteria for a self-hosted solution. Once we finalize the project scope and timeline, we can kick off the development process efficiently.
$250 USD in 1 day
7.2
7.2

Hi there, We’ve developed custom web applications with complex role-based systems and multi-language support, including solutions for sales teams to manage leads, quotations, and payments. We understand the importance of delivering a fully functional MVP that can be iteratively improved based on real user feedback. With a dedicated team of front-end, back-end, and QA experts, we ensure that every aspect of the product is optimized for performance and security. We also provide a fully managed server environment with daily backups and proactive security measures at no extra cost. 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 this exciting project. Best, Adil
$238.33 USD in 7 days
7.3
7.3

Hello dk416 Thanks for posting this exciting project, I am really interested in your project. Because I am working on 7 years over with PHP, Website Design, Graphic Design, Project Management, HTML, Software Development, Web Development, Database Management, API Development, Web Application, I can provide good result in your needed timeline. I am looking forward to discussing more with you soon. Regards Efanntyo -.
$100 USD in 90 days
6.8
6.8

I've reviewed the doc and available to assist you, Let's connect and discuss. I'd love to work on the project. Looking forward to jump over a quick call/chat. Regards.
$225 USD in 7 days
6.8
6.8

With more than a decade in the industry, our team at M2N IT Technology has honed extensive skills in all aspects of web design and development, which I believe perfectly suit your project. As such, I can confidently assure you that we do have the technical prowess to turn your ambitious vision of a fully customized PWA for quotation, sales, and payment tracking into a robust and intuitive reality. Our experience with platforms like Wordpress, PHP, Magento, CSS,, and skills in React and Next.js-acknowledged as friendly to Progressive Web App gives us an upper hand in meeting your specific requirements. Specifically, our long-term expertise allows us to comfortably navigate through tasks like defining different base prices for fixed/opening/sliding windows &doors and m² pricing calculations based on quantity. Additionally, we are completely aligned with the vision you've set forth; prominently owning not only your code but also the logic behind the project while still maintaining a self-hosted environment. Furthermore, you'll have full access to code and deployment credentials during the entire process assuring optimal transparency. We are proficient not just in mapping intricate features but also ensuring system security. For example; file visibility only to the uploader and admin and deletion requiring security code. Feel confident that our team will be able to offer you exactly what you seek for an internal sales tool: efficiency, scalability,and above all - ownership.
$180 USD in 5 days
7.0
7.0

As a seasoned full-stack software engineer with over 12 years of experience, I am confident in my ability to deliver the exceptional web-based Progressive Web Application you require. I have ample experience in creating highly customized and self-hosted solutions, which aligns perfectly with your vision. My expertise lies in WordPress, Shopify, PHP, Laravel, Python, Django, and a host of other tools you mentioned. Understanding your need for extensive system control, I will build a secure and scalable application that provides full authority to the admins. From managing price lists to defining material specifications and discounts per salesperson, rest assured every aspect of your project will be meticulously crafted. My deep comprehension of pricing logic and role-based permissions would ensure smooth functioning for users at all levels within your company. Additionally, my proficiency in handling large databases would maintain the integrity of your data while ensuring lightning-fast performance. I firmly believe that complexity should never impede usability; therefore, the interface I shall design will prioritize an effortlessly intuitive user experience. Let's collaborate to bring your vision to life with precision and efficiency.
$200 USD in 6 days
7.2
7.2

I will develop your quote management PWA strictly under your terms: 100% custom code, self-hosted, and free of third-party SaaS or licenses. I have extensive experience in scalable architectures, allowing me to precisely implement the price-per-sqm logic, material/color surcharge matrices, and the required hierarchical role system. I will configure PDF generation, secure file uploads with safety codes, and the multi-language interface, ensuring every quote edit triggers a new record to maintain data integrity. My goal is to deliver clean, documented software with full ownership transfer to MODA Windows & Doors for your total control. Profile: https://www.freelancer.es/u/JuanGarcia12001
$280 USD in 7 days
6.6
6.6

Hello As per your project post you are looking to build a Self-Hosted Progressive Web Application (PWA) for quotation, sales, and payment management for MODA Windows & Doors. The goal is to create a secure, scalable system that allows admins full control over pricing, quotations, and sales users while enabling sales staff to generate and track quotations, upload documents, and monitor payments without relying on third-party SaaS platforms or subscription systems. My focus will be on delivering a PWA that handles quotation creation, dynamic pricing logic, item configuration, and payment tracking with a secure admin panel and role-based access. The system will be modular to support future expansion, maintain full ownership of source code and data, and ensure that all calculations, discounts, and material rules are implemented accurately. I will also ensure proper backups, multilingual support, and maintainability for your internal team. I specialize in building custom web-based platforms with clear code structure, scalable architecture, and secure data handling. My approach emphasizes precise implementation of business rules, a smooth user experience for both admins and sales users, and structured delivery with full documentation and deployment instructions. Let’s connect to define the tech stack, development phases, and delivery milestones for your custom quotation and sales management platform. Best regards Nikita Gupta
$500 USD in 22 days
6.3
6.3

As a seasoned and highly competent WordPress developer, rest assured that my team and I have the expertise to take on your web-based application project with the utmost precision and professionalism. Over the past 10 years, our dedicated team has worked tirelessly on multiple projects, honing our skills in areas such as database management, PHP, software development, web application, web development and website design. Moreover, one advantage we offer is our ability to scale with your project needs. We're ready to start building your quotation creation and sales management systems as a first step towards developing a comprehensive PWA tailor-made for MODA Windows & Doors. Looking ahead into the future, you can count on us to further support your needs such as warehouse & production modules and any other requirements that may arise along your journey. With Prajapati Technologies by your side, you are guaranteed not only quality results but also exceptional customer service throughout the entire project life cycle. Our aim is to make your system secure and effortless for easy updates and maintenance without strings attached. Thank you for considering us!
$299 USD in 20 days
6.4
6.4

As the CEO of Web Crest with over a decade of experience, I assure you that we understand exactly what you need for your custom web-based PWA. Our deep understanding of pricing logic, role-based permissions, and comprehensive skillset in web development align perfectly with your project requirements. Not only can we provide a feasible solution for quotation creation, sales management, and payment tracking, but we also assure you of 100% ownership of source code, database, logic, without any third-party subscriptions or licensed platforms. Our previous successes in building AI-powered chatbots and automation solutions places us at the forefront of the latest technologies that underpin digital transformation – which is precisely what MODA Windows & Doors requires for its internal sales team. Whether it's the complex item configurations or varying pricing logic based on m² and discounts per user roles as admins or salespersons, our experience suits your needs. Finally, our 98% project completion rate with top ratings is a testament to both our expertise and client-centric approach. Your project will be delivered on time, supported by clear communication & a tailored approach. Partner with Web Crest to build your secure, scalable and user-friendly self-hosted PWA and let's revolutionize your approach to quotation, sales & payment management!
$225 USD in 5 days
6.2
6.2

As an experienced full stack developer from SoftwareLinkers, I specialize in building custom web applications and progressive web apps (PWAs) that are scalable, secure, and tailormade to fit your unique business requirements. With a deep understanding of pricing logic and role-based permissions, I'm confident in my ability to construct a self-hosted, fully-integrated system that meets your exact specifications. Over the years, my team and I have worked on numerous projects requiring extensive API development, database management, and web-based solution enhancement just like yours. We've served clients across a variety of industries including eLearning, finance, logistics, corporate platforms and startups- much like you MODA Windows & Doors. Our approach includes more than just coding; it involves deep understanding of your business goals to design reliable systems that perform optimally. We focus on building solutions that not only meet your current needs but also cater for future scalability. With our collaborative approach and dedicated customer support, we aim to become your long-term technical partner in providing the best solution for all your challenging scenarios. Partner with SoftwareLinkers on this project for assured quality work delivered on time and within budget. Let's discuss how we can turn your vision into a reality!
$300 USD in 12 days
6.5
6.5

I understand you need a fully custom, self-hosted PWA for quotations, sales, and payment management with complete source code ownership and no third-party dependencies. I can design and develop a secure, scalable system with role-based access, advanced pricing logic, and clean, well-documented architecture tailored to your workflow. My work is reliable, performance-focused, and built for long-term control and maintainability. I can start immediately and deliver in clear milestones. Let’s discuss your requirements and next steps.
$225 USD in 5 days
6.4
6.4

With over a decade's worth of experience in building complex and custom web applications, I believe I am the right person to handle your project. I have extensive knowledge in MEAN/MERN stacks, Core PHP, and other relevant technologies essential to deliver a high-performance, scalable, and secure application like yours. My excellent command in front-end and back-end development will ensure a user-friendly design and a robust logic system that aligns seamlessly with your requirements. Moreover, my skills extend far beyond web development. As an AI enthusiast, I can integrate Automated Intelligence features into your application, potentially aiding documents classification, intelligent workflows processing, and much more. Additionally, having worked on similar projects involving pricing logic and role-based permissions, I fully understand the complexities involved within these systems. Rest assured; my primary focus will be on clean code and adhere to strict security protocols while giving full 100% ownership of source code to MODA Windows & Doors. Let's get started on this journey towards an exceptional self-hosted web application that caters effectively to all your Quotation-Sales-Payment needs! With Regards! Abhi
$250 USD in 7 days
6.6
6.6

As a seasoned Full-Stack Web and App Developer, I am fully equipped to realize the custom web-based PWA you require for MODA Windows & Doors. My extensive experience developing similar systems makes me the perfect candidate for this project. I intuitively grasp how important it is for your system to be self-hosted with 100% ownership guaranteed, no third-party subscriptions or licensed platforms – this aligns perfectly with my understanding and work ethics. Having managed several projects with features akin to your proposal, I have developed an acute understanding of pricing logic and role-based permissions which will prove to be instrumental in building your application. My proficiency in using languages such as HTML, CSS, Javascript, React and PHP makes cleaning and managing codes nothing short of second nature. As a result, I can assure you of a highly secure, scalable, and robust system that will simplify your quotation creation, sales and payment tracking processes.
$100 USD in 1 day
6.3
6.3

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