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I am looking for a booking system to replace square. It’s too limiting on functionality, and I would like to create my own system optimized strictly for Auto Detailers called [login to view URL] - I built a system in base44 when I was just starting to learn this stuff, and didn’t know i’d be locked into it. So we need to build a new one from scratch. Right now, it just needs to be a basic booking system that I can invoice from and prevent double bookings. But a few months from now it will be a full CRM that manages everything from their website, to there reviews, GMB profile, and all sorts of other upsells. But for now, lets just get the foundation built. I am supplying some links to the current booking system [login to view URL] as well as some screen shots from the admin.
ID do Projeto: 40153246
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Hi As an adept Full Stack Developer with significant experience in PHP and MySQL, I'm confident in my ability to deliver a booking system that meets and exceeds your expectations. My proficiency extends to web development and custom solutions, and I've worked extensively with CMS and eCommerce platforms such as WordPress and Magento in my career. Given the nature of this project, my prowess in building scalable web applications will prove invaluable ensuring the long-term stability of DetailersOS.com. Furthermore, my team's expertise in Business Process Automation aligns perfectly with your future vision for a comprehensive CRM that manages everything from website functioning to reviews, GMB profiles and upsells. We have extensively used big data analytics tools including MongoDB and Cassandra - skills which will be beneficial for gradual scaling of your software to accommodate higher data turnover. Thanks
$3 USD em 40 dias
5,5
5,5
62 freelancers estão ofertando em média $9 USD/hora for esse trabalho

Hi, Yes, I can help you design and build a custom booking system for auto detailers from the ground up, with a clean foundation that replaces Square today and scales naturally into a full CRM over time. I have worked on booking systems and SaaS-style admin dashboards where the early architecture matters just as much as the UI, especially when future features like invoicing, reviews, GMB integrations, and upsells are planned. How I’d approach DetailersOS (Phase 1): • Build a reliable booking flow optimized specifically for auto detailers • Prevent double bookings with proper time-slot and service logic • Create a clean admin dashboard for managing bookings and customers • Implement invoicing and payment-ready structure (even if payments are added later) • Design the system so CRM features can be layered in without refactoring I am happy to review the existing booking flow and admin screenshots to match and improve the current UX while simplifying what doesn’t need to be complex yet. A few quick questions: 1. Do you want this as a web app only for now, or mobile-ready from day one? 2. Should payments be processed in Phase 1 or added later? 3. Will each detailer have their own branded booking page? 4. Do you already have a preferred tech stack, or are you open to recommendations? Best regards, Divya
$8 USD em 40 dias
8,1
8,1

Hi, I’m Neilesh Chouksey, a Senior Full-Stack Developer with 10+ years of experience building custom booking systems, CRM platforms, and scalable SaaS applications. I reviewed your requirement to replace Square with a custom Auto Detailer–focused booking system (DetailersOS) and I can help you build a solid foundation that can easily scale into a full CRM platform. What I Can Deliver: • Custom booking system with real-time availability • Double-booking prevention logic • Invoice generation system • Admin dashboard for booking management • Customer management module • Secure backend architecture • Scalable database design for future CRM expansion Future-Ready Architecture: I will design the system so it can later support: GMB integrations, reviews, website management, automation tools, AI features, and upsells. I specialize in PHP, MySQL, CRM systems, SaaS architecture, automation, and performance optimization. Let’s discuss your current system and build a scalable DetailersOS platform. Best regards, Neilesh Chouksey
$5 USD em 40 dias
8,2
8,2

Hi! My name is Marjan and I'm here to offer you my services as a skilled applicant with over a decade of experience working on Freelancer.com. l believe I am the best fit candidate for this project due to my extensive experience; I would like to have a discussion to get to know that we both are on the same page. Once the scope will be locked, I will start working on it right away.
$20 USD em 40 dias
6,5
6,5

Hello Justin E., I will approach this by: 1) auditing your current booking UI and admin screenshots/links; 2) designing a scalable data model and API to handle bookings, invoices and prevent double-bookings; 3) building a clean customer booking flow and admin dashboard with invoice generation and conflict checks; 4) implementing secure authentication, testing, and QA; 5) preparing modular code and documentation to extend into a full CRM later. I’ll keep the system lightweight and focused so we have a solid foundation for future upsells. Please inbox me to discuss details and priorities further. Regards, Saad J.
$8 USD em 40 dias
5,3
5,3

I can rebuild DetailersOS from scratch as a clean, scalable booking system focused purely on auto detailers—no double bookings, smooth scheduling, and invoicing-ready from day one. I’ll lay a solid foundation so it naturally grows into a full CRM without locking you in again.
$5 USD em 40 dias
4,3
4,3

I've read your job description and can help you replace Square with a custom-built booking system for DetailersOS, starting with a clean, reliable foundation designed specifically for auto detailers. I have experience building booking and invoicing systems from scratch, focusing on preventing double bookings, clean admin workflows, and architectures that can evolve into full CRMs without rework or lock-in. I will design and implement the initial booking, calendar, and invoicing flow based on your current system and screenshots, with a scalable backend ready to later support reviews, GMB, websites, and upsells. If that aligns, I’m ready to review your existing flow and start building the foundation immediately. Hassan Suhail
$15 USD em 40 dias
3,9
3,9

Hey , Thank you for sharing the job details. After going through the description, it’s clear you need someone confident with PHP, Lead Generation, Software Architecture, Automation, MySQL, CRM, AI Development and Sales and can deliver clean, reliable results. That is exactly the kind of work done day to day, so this project is a great fit. Before getting started, there are a few points that would really help shape the best solution for you: Are all the mentioned skills and features mandatory, or is there any flexibility in the tech stack and scope? Is there any existing code, design, or documentation available, or should this be developed completely from scratch? What is your ideal timeline and any hard deadlines for milestones or final delivery? Why work with me? 1. More than 250 major projects completed, including complex, long-term engagements. 2. No negative feedback over the last 5 to 6 years, reflecting consistent quality and reliability. 3. 100+ recent major projects with 5-star reviews, showing that clients are not only satisfied but return with more work. Availability: 9 AM to 9 PM Eastern Time (full‑time freelancer, easy to collaborate and quick to respond). Portfolio: https://www.freelancer.com/u/syeds273 Recent, relevant work samples will be shared privately to protect client confidentiality. Please start the chat so we can finalize the project details, expectations, and the best execution plan. Regards, Syed.
$20 USD em 27 dias
3,2
3,2

Hi! I can help you rebuild DetailersOS from the ground up with a clean, scalable foundation tailored specifically for auto detailers. I’ll start with a reliable booking system that prevents double bookings, supports invoicing, and is easy to extend into a full CRM later. I’ve built custom booking and admin systems before and understand how to future-proof the architecture from day one. I’m happy to review your existing links/screenshots and propose a clear roadmap and timeline.
$3 USD em 40 dias
3,1
3,1

Hi there! Are you looking to integrate any payment gateways now or keep invoicing separate for the initial booking system? Regardless, this is definitely something that I feel confident delivering on, given my past experience. I would love to discuss your project further! Looking forward hearing from you. Kind Regards, Corné
$2 USD em 14 dias
3,0
3,0

Hi, As an experienced Full-Stack Developer with a strong understanding of automation and MySQL, I am confident that I can deliver the tailor-made solution you need for DetailersOS.com. You mentioned needing a booking system that prevents double bookings and efficiently handles invoicing; I have developed similar systems in the past using the MERN (MongoDB, Express, React, Node.js) stack reminiscent of what you have in place. What sets me apart is my added expertise in automation using tools like n8n, Make, and Zapier -- handy skills for scaling your booking system into a comprehensive CRM and ensuring all your auto detailing operations are interconnected to maximize efficiency. Automation is about simplifying complex processes so entrepreneurs can focus on growing their businesses; it is an ideal skillset for making your platform more time-efficient. Can we discuss your goals in a quick chat? Warm regards Usama
$5 USD em 25 dias
2,2
2,2

Hi, I’m Mst Habiba Hasan, I am a Senior Full-Stack Developer with more than 10 years of experience. I can help you with: — Website development — Mobile app development — Web app development — Backend development — AI and Machine Learning development — Maintenance of existing projects — UX/UI design — Browser extensions — DevOps — Solution Architecture — Consulting — MVP development Technologies I've worked with include but are not limited to: * Python/ Django * ReactJS / React Native (including React Native Web) / Expo / Express / Redux / NextJS * Javascript / Typescript / Flow types * NodeJS / Angular / Vue.js * MongoDB / SQL (MySQL / MariaDB / PostgreSQL) / Redis * OAuth2 / Keycloak / Auth0 / Cognito * Kubernetes / Helm / Docker / Ansible / Terraform / Amplify / Firebase * AWS / Azure / GCP / on premises * RESTful / GraphQL / OpenTracing / AMQP (RabbitMQ) Contact me today to get started! I’m excited to collaborate and bring your vision to life. Best regards, Mst Habiba Hasan
$5 USD em 40 dias
3,4
3,4

I appreciate the opportunity to work on your custom booking system for DetailersOS.com. I understand you need a well-structured, professional, and user-friendly foundation that prevents double bookings while allowing invoicing, with seamless integration planned for a future full CRM. I may be new to Freelancer, but I bring solid experience in building robust booking platforms and invoicing tools tailored to niche markets like auto detailing. I’d love to dive deeper into your project and see how I can help. Regards, Blaze Nicholas
$4 USD em 14 dias
0,3
0,3

Hello, With over 8 years of professional web development experience and a strong skill set in automation, MySQL, and PHP, I am well-equipped to offer you a solution that meets all your requirements for DetailersOS.com. My previous work includes developing complex booking systems with comprehensive invoicing features and avoiding double bookings successfully. In addition to my technical abilities, I have an expert understanding of CMS platforms such as WordPress, Shopify, Prestashop, OpenCart. This makes me an ideal candidate for the current project, as it requires you to build a system from scratch that evolves into a full CRM in the future. Thanks!
$50 USD em 20 dias
0,0
0,0

Hello Justin, I understand you are looking to replace Square with a more functional booking system tailored for Auto Detailers called DetailersOS.com. I see the importance of creating a system that not only handles basic bookings and prevents double bookings but also evolves into a comprehensive CRM managing various aspects of the business. I plan to approach this project by first focusing on building a solid foundation for the booking system that is user-friendly, efficient, and scalable. By understanding the current limitations and requirements, I aim to develop a system that meets your immediate needs while laying the groundwork for future enhancements. Core Deliverables: - Design and develop a custom booking system for Auto Detailers - Implement features for invoicing and preventing double bookings - Ensure seamless integration with the existing website and admin interface - Provide ongoing support and maintenance for the system Expertise & Portfolio: I'll share the portfolio with you in the DM. Kindly ping me there. My experience with web development and CRM systems ensures a high-quality and tailored solution for your business. I’d be happy to discuss your project further and answer any questions. Best regards, Malaika
$5 USD em 40 dias
0,0
0,0

Hi, This is the right time to rebuild DetailersOS properly, and I’ve helped founders replace limiting third-party tools with custom, scalable booking systems designed for their exact niche. My focus would be to deliver a clean foundation now that won’t block you when you evolve this into a full CRM later. Phase one would be a purpose-built booking and invoicing system for auto detailers: real-time availability, strict double-booking prevention, service-based scheduling, customer details capture, and invoice generation. I’ll study your existing Base44 setup, current booking flow, and admin screenshots to retain what works while removing constraints. From an architecture standpoint, I’ll design this with future expansion in mind—modular data models, role-based access, and APIs that can later support CRM features like website management, reviews, GMB integrations, and upsells without rework. The UI will stay simple for now, but the backend will be production-ready. Thanks for your time! Suneel K.
$5 USD em 40 dias
0,0
0,0

Hi, I will help you ditch the basic tools and build a custom engine for DetailersOS that handles your bookings and invoices without any glitches. We’ll get this foundation locked in today so we can turn it into a full-blown business hub in a few months. Portfolio: https://www.freelancer.com/u/MsLuci Let's discuss in chat as I have some queries to ask regarding the project to proceed further. Thanks, Luci
$10 USD em 40 dias
0,0
0,0

Hello! Your goal to move beyond Square and build a system designed specifically for auto detailers makes perfect sense. Generic tools always hit a ceiling—custom platforms don’t. I’m a Cloud & DevOps Architect with 8+ years of experience building scalable SaaS foundations from scratch. I’ve helped clients transition from restrictive platforms into flexible systems with booking, invoicing, role-based admin panels, and double-booking prevention, all engineered to scale cleanly into full CRMs. I view every project as an opportunity to create something meaningful. As the saying goes. A journey of a thousand miles begins with a single step and I take that first step with curiosity, consideration and clear communication. As the saying goes "If you want to go fast go alone. If you want to go far, go together". I always strive to collaborate with thoughtful and creative clients who prioritize quality and impact. Connect, share ideas and let's create great result together
$5 USD em 40 dias
0,0
0,0

Hello, I am excited to offer my support for your project. With solid experience in administrative tasks, project coordination, and client communication, I bring a strong attention to detail and a commitment to timely, quality work. Key Skills: •Data entry and management •Document refinement and editing •Translation assistance •Effective communication with clients and team members •Proficiency with remote work tools and software •Time management and multitasking •Adaptability to new systems and processes I hold a degree in Economics from Zhejiang Sci-Tech University and have experience working in China, so I am fluent in Mandarin (中文流利), which helps me communicate effectively in bilingual environments. I am confident these skills will help keep your projects running smoothly and contribute to your team’s success. Looking forward to the opportunity to collaborate. Best regards, Godhelp Dhobhi
$5 USD em 40 dias
0,0
0,0

Hi, this is a great idea—and you’re right to rebuild this properly instead of staying locked into a limited platform. I’m part of J15, a development team experienced in custom CMS, booking systems, and CRM foundations built for vertical-specific businesses. We focus on creating systems that start simple but scale cleanly. Phase 1 – Booking System (Foundation): • Custom booking flow optimized for auto detailers • Real-time availability & double-booking prevention • Services, time slots, buffers & basic rules • Invoicing & customer records • Admin dashboard for bookings, services & pricing Architecture-first approach: • Clean database design (ready for future CRM features) • Modular backend so reviews, GMB, website tools & upsells can plug in later • Ownership of code & data (no platform lock-in) Tech (flexible): PHP or Node backend, MySQL, clean admin UI, API-ready structure. AI/automation hooks planned but not forced into MVP. Next phases (optional): CRM, review management, website widgets, GMB sync, upsells & automation. Happy to review your current system and screenshots and propose a clean rebuild path.
$8 USD em 40 dias
0,0
0,0

Hi I can help you build a custom booking system from scratch tailored specifically for auto detailers through your platform, DetailersOS. I’ll start with a basic booking system that allows you to manage appointments, prevent double bookings, and generate invoices—focusing on functionality that meets your immediate needs. As you mentioned, we’ll lay the foundation now, and later expand into a full CRM that will manage reviews, GMB profiles, and other upsells. I’ll ensure the booking system is flexible and scalable, with a clean and simple interface for your team to manage. The system will be built to avoid double bookings and handle invoicing smoothly. Once the basic functionality is in place, we can expand further to integrate with other business tools in the future. I’ll review the current booking system and screenshots you’ve provided to get a clear understanding of your needs, and we’ll make sure the foundation is solid for the upcoming CRM expansion. Thanks, Jesse
$5 USD em 40 dias
0,0
0,0

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