Buyer-Seller Bidding App

@a4logic

Hello, As a reputable Software Development firm, I can offer you the optimal set of skills and experience to deliver your Buyer-Seller Bidding App with excellence and precision. My strength lies in developing remarkable mobile applications across multiple platforms, including iOS and Android. If required, I can utilize popular cross-platform frameworks like Flutter or React Native which enable the work continuity through their single code-base nature. To ensure smooth functionality, I'll integrate secure sign-up methods for your users along with a visually-appealing work request flow that accommodates brief files, photos, etc. Additionally, my expertise lies in building live bidding interfaces and efficient in-app messaging systems to facilitate uninterrupted communication between buyers and sellers. I'm also well-versed in leveraging PayPal's SDKs for monetary transactions. Partnering with me also guarantees a properly set up backend (Firebase or recommended alternative) that would seamlessly integrate with your app. Once the app is polished, deployable, and tested proficiently on TestFlight and Play Console, I'll equip you with extensive documentation for easy handover. Let's turn this concept into a tangible reality together! Thanks!

@Eliteinno

Hi there, A frequent issue with cross-platform marketplaces is that real-time features like bidding and messaging often suffer from latency if the backend architecture isn't optimized, leading to user frustration. We will eliminate this risk by building your app with Flutter for native-like performance on both iOS and Android, integrated with a real-time database (Firebase) and native PayPal SDKs to ensure instant updates and secure, compliant transactions. Here are two quick questions to clarify the scope: Do you require a web-based admin panel for moderating jobs and handling user disputes? Should we implement push notifications specifically for "outbid" alerts to drive engagement? We’ve built similar cross-platform marketplace bridges before—feel free to check our portfolio, or I can send you specific samples in chat. As a company policy, we also provide 30 days of post-delivery support to ensure everything runs smoothly. Let’s discuss your project today!

@ssquare489

I am Sumit Joshi from Sacesta Technologies. I can deliver a single code-base app for iOS and Android with real-time bidding, chat, and PayPal driven payments. I suggest React Native with Expo for the app and a Node.js backend with PostgreSQL or Firebase Auth and Firestore. This keeps authentication, notifications, and deployments manageable while staying scalable. I will deliver: • Secure signup and login with email, phone, and social providers. • Buyer flow to create job posts with photos/files, category, budget, and location, then publish to the marketplace feed. • Real-time bidding where sellers can place, edit, and withdraw bids until acceptance, with clear status updates for both sides. • In-app messaging tied to each job so buyers and sellers can negotiate safely without sharing personal contact details. • Deep PayPal integration for deposits, milestones, and final payment using their native SDKs and webhooks for reliable status sync. • Admin and basic reporting endpoints so you can monitor users, disputes, and transactions. I have delivered similar marketplaces and chat heavy apps using React Native, Stripe or Razorpay payments, and real time updates, so I can also help refine your wireframes into a production ready UX. I will also prepare TestFlight and Play Console builds, basic CI scripts, and a concise handover guide covering environments, store submissions, and future maintenance. Regards, Sumit Joshi

@khurshid040462

Hi there, I’m excited about your project to develop a Buyer-Seller Bidding App! I have extensive experience in creating cross-platform applications using Flutter and React Native, ensuring a seamless user experience on both iOS and Android. I will implement secure sign-up and login options, allowing users to join easily via email, social media, or phone. The smooth workflow for job requests will enable buyers to easily attach images and files, while a real-time bidding interface will keep sellers engaged by allowing real-time adjustments to their offers. I’ll integrate in-app messaging for effective negotiation and PayPal for secure payment handling. With your wireframes and branding, I will ensure a polished final product and support you through the submission process on TestFlight and the Play Console. Clean code and thorough documentation will guarantee a smooth handover. Could you clarify any specific features you envision beyond the core requirements?

@ahsaans

Hi, I’ve reviewed your requirements and I can build your cross-platform job marketplace app (iOS & Android) using Flutter with a clean, real-time bidding flow. What I’ll Deliver: Secure login (email, phone, or social) Buyer job posting with photos/files Real-time bidding system for sellers (place, edit, withdraw bids) In-app messaging between buyers and sellers PayPal integration for deposits, milestones & final payments Backend setup (Firebase or your preferred option) Polished UI based on your wireframes + brand assets TestFlight & Play Console builds + full source code Clean, maintainable, well-documented code Relevant Experience: I have 4+ years of experience building production-grade Flutter apps with real-time chat, dashboards, role-based systems, and secure payments. I can deliver a smooth, professional, and scalable marketplace experience. Bonus: I already have some frontend screens for a marketplace app. If you want to see them, I can share them in chat immediately. Timeline & Budget: We can finalise both in chat based on your exact workflow. I’m confident I can deliver a solid, user-friendly marketplace app that matches everything you described.

@sohaibfreelance

Hi, I have read your project description and understood it. You need a cross-platform mobile marketplace where buyers can post jobs, sellers can bid in real time, and both can communicate via in-app messaging, with secure sign-up/login and PayPal integration for deposits and payments. The app must launch on iOS and Android from a single codebase, with a smooth, polished UI based on your wireframes, and a backend (Firebase or recommended alternative) supporting live updates and secure transactions. I can build the complete marketplace app, implement all core features, and provide clean code with deployment guidance. Regards, M Sohaib

@shawanay

Greetings, I understand you need a cross-platform mobile marketplace with real-time bidding functionality for iOS and Android. My approach is to use Flutter for development with Firebase backend for real-time data sync and secure authentication. I'll implement secure login with multiple options, smooth job posting flow with media uploads, live bidding interface with real-time updates, in-app messaging system, and PayPal SDK integration for compliant payment processing. I'll deliver polished apps for both platforms with TestFlight and Play Console deployment guidance plus clean documented code and handover documentation. Let's connect to review your wireframes and discuss the project timeline. Best regards, Shawana

@freeabhay

Dear Sir, I have worked on many projects till date and delivered them successfully. I received all the projects till date either from another freelancing platform or from direct customer contact and I've never disappointed my clients. I promise to give 100% of my time, efforts and skills for this project. Technologies I have worked on since September 2012. 1. Frontend - Angular, Jquery, HTML 5, Css 3 2. Backend - PHP Laravel 3. Mobile - Flutter 4. Storage - mysql 5. API Integrations- Google, Firebase, Facebook, Booking, Ethiopian Airlines NDC etc 6. Payment Gateways - Paypal, Mastercard, Flocash, CcAvenue, Razorpay etc. Thanks, Abhay

@jonhw5

Hi there, Your vision for a real-time mobile marketplace is both exciting and impactful! I love the focus on a seamless experience for both buyers and sellers, with robust features like secure multi-method signup, intuitive job posting, and a dynamic live bidding system—this can truly set your app apart. Ensuring privacy with in-app messaging and secure payments via PayPal’s SDKs are smart choices that I’m confident can be implemented with precision. I'll make sure your wireframes and brand assets come to life in a polished, cross-platform app—delivering a reliable, single codebase solution using Flutter or React Native (with thoughtful backend architecture on Firebase or other best-fit tools). I’m committed to clear communication, meticulous code, and full support right up to successful launches on both app stores. Let’s build something outstanding together! Best regards, Vitalii

@igniculusss

Hello, I’m Nitin Nayak, owner of Igniculuss Technologies with 15+ years of experience and a senior mobile team (10+ years) skilled in cross-platform marketplace apps. We can build your real-time job marketplace using Flutter or React Native (your choice) to ensure a single codebase for iOS + Android. What we will deliver: Secure authentication: email, phone, and social login Buyer flow: create job requests, attach photos/files, and publish instantly Live bidding system: sellers place/edit/withdraw bids in real time In-app chat: seamless negotiation without leaving the app PayPal SDK integration: deposits, milestones, final payments—fully compliant Backend: Firebase or a scalable alternative (we recommend based on features) Deployment support: TestFlight + Play Console submission Clean, well-commented code + handover docs We’ll turn your wireframes into a polished, production-ready app with smooth UI/UX and secure infrastructure. Ready to start immediately.

@ZouityW

I’m perfectly positioned to design and build what you need. New to this platform but highly motivated, I recently helped a client achieve their goal efficiently. Your project aligns really well with how I like to work. Creating a professional, user-friendly, and seamless mobile marketplace is my expertise. My skills include mobile app development, UI/UX design, and integrating secure payment systems like PayPal. Let’s connect about your project. Worst case? You leave with a complimentary strategy session. Regards, Ilyaas.

@sadiar86

Hey Sufjan X., I just finished reading the job description, and I see you are looking for someone experienced in Mobile App Development, React Native, iPhone, Flutter, iOS Development, App Design, Objective C and Android. This is something I can do. Please review my profile to confirm that I have great experience working with these tech stacks. While I have a few questions: 1. Are all these requirements? If not, please share more detailed requirements. 2. Do you currently have anything done for the job, or does it have to be done from scratch? 3. What is the timeline to get this done? Why Choose Me? 1. I have done more than 250 major projects. 2. I have not received a single bad feedback in the last 5-6 years. 3. You will find 5-star feedback on the last 100+ major projects, which shows my clients are happy with my work. Timings: 9 am - 9 pm Eastern Time (I work as a full-time freelancer) Portfolio Link: https://www.freelancer.com/u/syeds273 I will share with you my recent work in the private chat due to privacy concerns! Please start the chat to discuss it further. Regards, Sadia.

@tahacr07

As a Full Stack Developer who specializes in cross-platform mobile app development with Flutter and React Native, I have the perfect skill set to build your Buyer-Seller Bidding App. My proficiency will ensure the rapid production of a high-quality application for both iOS and Android platforms simultaneously, guaranteeing a consistent user experience across devices. I have already gained vast experience in creating many essential features your project demands, like secure sign-up and login, in-app messaging system, PayPal integration, and, most importantly, a live bidding interface. I will turn your wireframes into a polished, deployable app that fully aligns with your vision. Lastly, being well-versed with Firebase and other reliable alternatives for backend integration and management, I’ll responsibly handle all aspects of the back-end setup too. You can trust me to not only deliver clean code but also provide a detailed hand-over document that ensures absolute transparency for you in understanding the technical components of the project.

@raj855

Hi — I’m Raj, a senior cross-platform developer using flutter, India with 5+ years of experience building real-time marketplace apps. → Implement secure auth (Email/Phone + Google/Facebook login) → Build buyer job-posting flow with photo/file attachments → Real-time seller bidding (place/edit/withdraw until accepted) → In-app messaging for smooth negotiation → Payment compliance using PayPal Mobile SDK for deposits, milestones, and releases → Backend setup (Firebase or scalable custom Node/Laravel services) → Guide publishing through TestFlight + Play Console with a testing buffer → Deliver clean, modular, well-commented code + hand-over document I am fully committed to delivering a secure, fast, compliant, and production-grade marketplace for both Android & iOS within the timeline and budget we agree on. Ready to start immediately — share wireframes + assets and I’ll take it live. raj

@MalikHur007

Hey bro, I'm a best fit for your app. I'll create responsive and user friendly app that will help you increase your investments. I'll make your investments 10x. Just believe in me.