Web App Dev: Full Stack / Agency Required

@kabirchy

Hello, I'm excited about the opportunity to work with you on developing a modern and responsive web application. Based on your requirements, I'll leverage AngularJS to design a sleek frontend that ensures an intuitive user experience. For API development, I'll implement robust solutions to guarantee seamless communication between the client-side and server-side, using PHP for efficient processing. In addition to ensuring a high-performing and scalable application, I'll integrate reliable payment gateways tailored to your needs, providing secure financial transactions for your users. I understand the importance of a lightweight and efficient web app, and I assure you that each component will be optimized for speed and reliability. Looking forward to collaborating with you to bring your vision to life. Best Regards, Khorshed Alam, RS Software

@vishal1145

Your payment gateway integration will fail PCI compliance audits if card data touches your server at any point. This creates legal liability and blocks you from processing real transactions. Quick questions - are you using a tokenized payment flow where the gateway handles card capture directly? And does your Challan API have rate limits we need to account for during peak traffic? Here is the architectural approach: - PHP + LARAVEL: Build a stateless REST API with middleware for request validation and error logging that prevents malformed challan queries from reaching your database. - PAYMENT GATEWAY INTEGRATION: Implement client-side tokenization using the gateway's JavaScript SDK so card data never hits your backend, then handle webhook callbacks for async payment confirmation. - ANGULARJS: Create a reactive form with real-time validation that disables the payment button until all vehicle details pass server-side verification checks. I've built similar challan payment systems for 2 government contractors where uptime during tax season was non-negotiable. Let's schedule a 20-minute call to review your API docs and confirm the security requirements before we lock in architecture.

@wpexpert0141

Hi, I read through your requirements, and before suggesting an approach, I'd like to clarify one important point because it will affect the overall implementation and timeline. Could you share what you've already finalized, and which parts are still open for discussion? In my experience, spending a few minutes clarifying the requirements at the beginning usually avoids unnecessary rework later. Once I understand your expectations, I'll suggest the most practical and scalable approach based on your project rather than a one-size-fits-all solution. Let's discuss.

@ixorawebmob

Hello, I’ve gone through your project details and this is something I can definitely help you with. I have 10+ years of experience in mobile and web app development, working with Flutter, Android, iOS, React, Node.js, and APIs. I focus on clean architecture, scalable code, and clear communication to ensure the project runs smoothly from start to finish. I will first review your requirements, suggest the best technical approach, and then proceed with development while keeping you updated at every stage. Here is my portfolio: https://www.freelancer.in/u/ixorawebmob I’m interested in your project and would love to understand more details to ensure the best approach. Could you clarify: 1. Do you need this for mobile, web, or both? 2. Do you already have UI/UX designs or should we create them? 3. Will there be any third-party API or payment gateway integration? 4. What is your expected timeline for completion? 5. Are there any reference apps or websites you like? Let’s discuss over chat! Regards, Arpit Jaiswal

@Azursol

Greetings, Creating a lightweight web application that seamlessly integrates vehicle details, challan information, and payment functionality is crucial for enhancing user experience. My approach would focus on building a modern, responsive UI that simplifies user interactions while ensuring robust backend API integration. To achieve this, I would: 1. Utilize technologies like React for the frontend and Node.js for the backend to ensure a scalable and maintainable codebase. 2. Implement the Challan Fetch and Payment Gateway APIs efficiently, ensuring smooth data flow and secure transactions. 3. Prioritize mobile responsiveness and thorough validation to enhance usability across devices. I have successfully developed similar applications where clean code and performance were key, providing a solid foundation for future enhancements. I look forward to the opportunity to discuss your vision further and understand any specific constraints or requirements you may have.

@ashinnd84

Hello there, we are a team of Python, AI/ML Full Stack Web and Mobile App Developers. Please, send me a message to discuss the work and finish in no time. Thanks Ashish Kumar.

@Hrolgar

Four pages is a fair description of the UI, but the actual work here is in how you handle the payment gateway's confirmation step versus a plain client side redirect. If a challan gets marked paid before the gateway confirms it server side, that's a refund headache waiting to happen. I'd build this as a lean React frontend on top of a small Node API layer, with that Node layer owning both third party calls: one to fetch challan details from the given API, one to the payment gateway including its webhook or callback endpoint so payment status gets confirmed server side rather than trusted from the browser. Vehicle number in, challan list and amount back, checkout, then a confirmed paid state once the gateway actually says so. Fully responsive down to mobile, kept simple rather than dragging in a big UI framework for four screens. Since both APIs are already documented I can commit to 6 days end to end. One milestone, 32000 INR for the complete build, delivered in 6 days from kickoff and API access. Can you share the payment gateway docs now so I can confirm the callback method before I start, sandbox credentials or the API spec is fine.

@irisinformatics

Hello, I have 8+ years of experience in full-stack web development and API integrations. I can build a responsive, production-ready web application with Challan Fetch API and Payment Gateway integration, ensuring secure payments, clean UI, proper validation, and scalable architecture. I will deliver well-documented source code, deployment support, and a smooth user experience across all devices. I'm available to start immediately and can discuss the best tech stack based on your requirements. Best regards, Manish Giri

@mahads31

At Solves Inn, we've built a tremendous portfolio of digital solutions that incorporate API development, HTML, JavaScript, payment gateway integration, PHP, and web development - all skills that perfectly align with your project's needs. Through our deep understanding and versatile use of technologies such as React.js, Node.js, MySQL, and more, our team is well-equipped to design and deliver a lightweight web application with a mobile-responsive design that will stand the test of time. With an eye for detail and a commitment to thoroughness, we don't just build applications; we build clean, documented source codes that promote ease of maintenance and future scalability. Deployment assistance is also part of our comprehensive service. Thus, we can ensure a hassle-free deployment process for your project's completion. We recognize the significance of your API integrations and payment gateway implementation necessities; they’re areas where we excel. Our tech-savvy team members have vast expertise in these domains and can streamline the entire process to guarantee smooth functionality in retrieving challan details and facilitating online payments. By choosing Solves Inn not only do you get exceptional technical skills but also a reliable technology partner committed to turning your complex requirements into reliable business solutions. Let's simplify complexity together!

@ASSAMWEB

Greetings, I have read the project description I have been working on a similar project in recent time . i am interested in the work open a chat to discuss requirements in details.

@NEHABHAT92

As a seasoned web and mobile app developer with over 9 years in the industry, my team and I at Neha Solutions offer the ideal blend of experience, technical know-how, and dedication to deliver superior IT services. We possess a wealth of knowledge in both frontend and backend development languages, including HTML, JavaScript, PHP, and more. Moreover, we have gained extensive experience regarding API integrations and payment gateways - making us the perfect fit for your project. Our commitment to quality knows no bounds. We understand the significance of a clean yet scalable implementation when it comes to building an application such as yours. Our past projects have seen us delivering production-ready web apps that are intuitive, responsive, and efficiently fulfill their intended purposes. Additionally, we offer a competitive cost without compromising on quality, ensuring value for every penny you invest in us. With Neha Solutions, you're not just getting an agency; you're gaining a dedicated partner committed to turning your ideas into reality. And that's not where our assistance ends; even after delivering your fully functioning web application with spotlessly documented source code, we remain available for free support for three months! Please take a moment to review our portfolio and detailed estimation regarding delivery timeline when considering our offer. That being said, we sincerely believe our skillset aligns perfectly with

@nowars

Hello, Our team has experience with JavaScript, React, Node.js, and Payment Gateway Integration, having successfully developed various web applications including booking systems and e-commerce platforms. For your lightweight web application, we propose implementing a responsive design across the four screens you specified, allowing users to easily enter vehicle details, fetch challan information, view data, and make payments. To achieve this, we will utilize React for a dynamic and responsive frontend, integrating the provided Challan Fetch API to retrieve data seamlessly and implementing a secure Payment Gateway for online transactions, ensuring robust validation and error handling throughout the process. Our estimated timeline involves setup, configuration, testing, and handover phases spanning roughly four to six weeks, aligning with your expectations. We are particularly interested in the payment integration, ensuring a smooth user experience. Thanks, PureCode Company

@dushyant317

I can build your responsive web application with secure Challan API and payment gateway integrations, clean architecture, strong validation, and a scalable production-ready implementation.

@ultimatesteve

Hello, thank you for reading my proposal. As a full-stack developer specialized in mobile dDevelopment with ove 15 years of experience, I'd like to understand more details about your project. If you're interested in what I have to offer, please contact me.

@Sacesta

As a seasoned full-stack web developer, my expertise lies in architecting clean and highly functional applications - just the kind you're in need of! Drawing from our impressive portfolio which exemplifies projects similar to yours, I and my team at Sacasta Technologies have years of experience in API integrations, payment gateway implementations, and delivering production-ready web apps - a perfect match for your requirements. Our technology stack is versatile including JavaScript, React, Node.js, Laravel amongst others. However, after carefully reviewing your project, we believe that a solution built on React and Node.js would be most fitting for enhanced scalability and security. In line with Sacasta's methodology, we appreciate the value of a structured process that delivers transparent communication and results that matter. Our journey with you will encompass meticulous discovery & strategy planning to robust quality assurance checkpoints ensuring the final product not only meets but exceeds your expectations. Timely delivery of clean, documented source code accompanied by top-notch deployment assistance - consider it ensured! Trust Sacasta Technologies to breathe life into your vision with end-to-end digital solutions suited perfectly for today's world. Hello full-stack development with responsive UI, make way for innovative functionality on your 4 screens!

@Rohitjadav12

Hi, I can develop your web application using .NET Core MVC with a responsive UI, secure API integrations, and clean, scalable code. Tech Stack: .NET Core MVC, C#, SQL Server, Bootstrap Timeline: 5–7 days Type: Individual Freelancer I have experience with third-party API and payment gateway integrations and can provide deployment support as well. Looking forward to discussing your project.

@GEN5SANTHOSH555

VELHADE builds web apps with API integrations regularly — Challan fetch + payment gateway is a clean, well-scoped build. For your 4-screen application: - **Stack**: React (frontend) + FastAPI or Node.js (backend), deployed on a VPS or cloud - **Challan integration**: Call the provided Challan API on vehicle number input, parse and display challan details cleanly — amount due, offence type, date, status - **Payment gateway**: Razorpay or the gateway you specify — order creation, redirect/embedded payment flow, callback handling with payment confirmation stored in DB - **4 screens**: Vehicle input → Challan details → Payment → Confirmation/Receipt - **Responsive UI**: Mobile-first, works well on phones (most users will be on mobile) We'll keep the backend thin and the integration clean — no bloat, easy to maintain. One question: is there a specific payment gateway you've already tied up (Razorpay, PayU, CCAvenue), or are you open to recommendation? VELHADE — integrations that work reliably in production.

@AlikeChen

Dear Client, I've carefully reviewed your project requirements and I'm excited to propose my services. **Understanding Your Project:** This is a complex and ambitious project requiring expertise in web development (frontend & backend), mobile app development (Android/iOS). I have extensive experience delivering large-scale projects. **Why I'm the Right Fit:** ✅ Full-stack web development with modern frameworks ✅ Native and cross-platform mobile app development ✅ Clean, maintainable, and well-documented code ✅ Clear communication and regular progress updates **My Approach:** I'll start by thoroughly understanding your requirements, then deliver a solution that exceeds your expectations. I'm committed to quality and timely delivery. I'm available to discuss your project in more detail. Let's connect! Best regards, AlikeChen

@atolykasy

Hi, I'm a full-stack developer (Laravel backend, React frontend) with hands-on experience integrating third-party APIs and handling payment flows end-to-end — including validation, error handling, and status updates on the frontend and backend. For this project, my proposed stack would be Laravel (API layer, validation, business logic) with a React frontend for the 4 screens — clean separation between backend and frontend, mobile-responsive by default, and straightforward to maintain afterward. My approach: - Build the 4 screens (vehicle details entry, challan fetch/display, payment, confirmation) with proper client-side and server-side validation - Integrate the Challan Fetch API and handle all response/error states clearly for the user - Integrate the Payment Gateway API with proper status handling and confirmation flow - Deploy the application and provide basic maintenance documentation - Deliver clean, documented source code I'm applying as an individual freelancer. Proposed cost: ₹34,000 INR (fixed price) Estimated delivery: 10 days Happy to share more details on my approach once I've reviewed the API documentation you'll provide. Best, Aldine