E-Commerce App Development for iOS & Android with Scalable Architecture

@augurstech

A Warm Hello! We are readily available to start working on this project! We are a professional software development agency with experience building production-ready mobile applications, e-commerce platforms, secure REST APIs, and web-based administration systems. We reviewed your requirements in detail, and this is exactly the type of project where the architecture, security, scalability, testing, and maintainability need to be considered from day one. We can build your complete e-commerce ecosystem using your preferred technology stack: Flutter + Java Spring Boot + PostgreSQL + Angular + TypeScript + JWT/RBAC + Docker + Linux/Nginx + REST/OpenAPI We would be happy to review your detailed business workflow, UI/UX expectations, payment gateway requirements, and existing infrastructure and then provide a finalized technical specification, milestone plan, and fixed quotation. We look forward to working with you on this project and potentially supporting the platform through future development phases. Best Regards,We would be happy to review your detailed business workflow, UI/UX expectations, payment gateway requirements, and existing infrastructure and then provide a finalized technical specification, milestone plan, and fixed quotation. We look forward to working with you on this project and potentially supporting the platform through future development phases. Best Regards, Ana

@Microlent

Hello, I am Dr. Rajesh Rolen, PhD in Computer Science & Engineering, with experience of over 20+ years in Android, Flutter, iOS Development, Mobile App Development, PHP, React Native, iPhone, Swift As a preferred freelancer in the top 1%, I have done 400+ projects here on freelancer.com, I have 4.9 ratings out of 5 on average, which showcases my quality of work and timely delivery. Key Highlights: - Free Hosting Support on the Cloud or any desired platform. - Free 3 months of post-delivery support to ensure that our client doesn’t face any challenges after the launch of the project. - Free Dedicated tester on projects to ensure quality delivery, so clients don’t need to act as a tester. - 10+ Years experience UI/UX team to ensure intuitive UI. Portfolio: https://www.freelancer.com/u/Microlent Please open the chat and send me a message, so we can have a more detailed discussion about the project to give you the project timeline and cost. Thank you for considering my services. I look forward to engaging in a productive conversation and understanding how I can be of assistance in bringing your project to life. Regards Rajesh Rolen

@rajat07me

The key challenge here is not just building an e-commerce app, but setting it up so payments, roles, notifications, and future gateway additions do not turn into technical debt later. I’d approach this by defining the API/contracts and module boundaries first, then building Flutter, Spring Boot, and Angular admin around a clean scalable structure with security, testing, and deployment considered from day one. I’ve worked on custom ecommerce systems where RBAC, order flow, admin controls, and payment integration had to be production-ready rather than patched together. Your requested stack is also practical for long-term maintenance, especially with Swagger docs, Dockerized deployment, and structured milestone-based code reviews. To estimate the rollout phases properly, I’d like to confirm a few things: - Do you already have UI designs/wireframes, or should design be included too? - Which payment gateway(s) should be integrated first? - Will order notifications be push only, or also email/SMS?

@technosystem

With a proven track record in developing complex, high-performing, and secure applications, I bring the perfect set of skills and experience to your e-commerce app project. I have significant expertise in both Android and iOS platforms, and having delivered mobile apps across various genres, I am confident in my abilities to meet and exceed your expectations. My proficient knowledge in PHP, React Native, and Swift ensures my familiarity with the tools you've outlined like Flutter for Android and iOS, PostgreSQL as your database choice, Java Spring Boot REST API on the Backend as well as Angular & TypeScript for your Web/Admin section of the platform - making me highly qualified and ready to go. My understanding of why security is key led me to always valorize it in all the projects I undertake. I have successfully implemented JWT-based Authorization with role-based access control similar to what you require for this project. Additionally, my use of Docker + Linux/Nginx for deployment further guarantees secure hosting environments.

@irsolutions

With over a decade of experience in full-stack architecture and high-scale systems, I understand your goal of turning Fhbsolutions into a seamless mobile shopping experience. My background in developing high-performance solutions for over 1 million users and expertise in implementing secure FinTech systems make me well-equipped to tackle the challenges of creating native or cross-platform e-commerce apps for iOS and Android. For strategic insight, I recommend leveraging Flutter for this project to ensure a polished, maintainable codebase with seamless performance across both platforms. My past success in building Telegram Mini Apps serving over 1 million users demonstrates my ability to handle complex, high-traffic applications effectively. I encourage you to reach out to discuss your project further and collaborate on developing a roadmap that aligns with your timelines and project goals. Let's work together to create a mobile shopping experience that delivers on all your requirements and exceeds expectations.

@extreamcode

Hi ClientFirstName, I can see the real pain point here: your store already works, but the mobile experience is where customers can slip away. I’ve built ecommerce solutions with PHP/MySQL backends, REST API integrations, payment gateways, and mobile-friendly interfaces, and I can turn Fhbsolutions into a clean app that feels fast, trustworthy, and native on both iOS and Android. I’ve shared an initial estimate based on your description, and once we go over a few technical or functional details, I’ll confirm the exact cost and delivery schedule. I’d approach this with a maintainable codebase, solid cart/checkout flows, push notifications, offline handling, and a smooth handover so your team can manage future updates confidently. If helpful, I can map the best architecture first and then move into UI, API integration, and store submission planning. Would you like the app to behave like a tuxedoed twin of the web store, or should it add a few mobile-only superpowers too? Looking forward to your reply so we can finalize the exact plan. Thanks, Asad

@techplusintl

★★★ REACT NATIVE SPECIALIST ★★★ Hi, To ensure a successful mobile app development, consider the potential challenges with API integration and performance optimization. Testing on various devices is crucial to guarantee a consistent user experience across platforms. Additionally, managing offline states effectively will enhance user satisfaction. For implementation, I will utilize React Native to build both iOS and Android apps, ensuring a shared codebase for efficiency. I will integrate your existing REST/GraphQL APIs for seamless functionality. Performance will be prioritized, with thorough testing to meet App Store and Google Play requirements. I will need access to your API documentation, branding assets, and any existing design guidelines to align the mobile app with your current e-commerce site. Thanks!

@installerpoint

Hello, I’m ready to build Fhbsolutions into a polished iOS and Android shopping experience, integrating your existing REST/GraphQL APIs for catalogue, accounts, cart, payments, orders, tracking, and notifications. I’ll focus on secure authentication, fast core flows, reliable offline states, and platform-compliant store releases while maintaining consistency with your web store. I recommend adding structured analytics and crash monitoring from the first build to identify checkout and performance issues quickly. I will provide clean source code, build instructions, and a concise handover walkthrough. Check out my portfolio here:- https://www.freelancer.com/u/installerpoint Best Regards, Muhammad Adeel

@onkarkulkarni8

We will help you with an Ecommerce Application Development including the backend and web admin panel to manage the entire platform going forward. We will use the mentioned tech stack as well as be able to suggest better options if you are comfortable. Please get in touch to discuss more in detail and start with the work ASAP Cost and timeline will be confirmed in chat after a complete understanding and documentation of the expectations in detail if you are looking for a fixed price deal

@Hammadhassan21

Howdy, The biggest advantage of your architecture is that it is being designed for long term scalability from the start, and that requires more than simply connecting Flutter, Spring Boot, and PostgreSQL. I can help build the system with security, modularity, testing, and maintainability built into the development process. I can work across the Flutter customer apps, Spring Boot REST APIs, PostgreSQL, and Angular admin dashboard, including Swagger/OpenAPI documentation, RBAC, audit logging, and a modular payment layer that allows additional gateways without restructuring the backend. I’d also keep automated testing, Git based reviews, Docker deployment, and production readiness part of the development process rather than leaving them until handoff. I can show you similar production e-commerce projects in chat and provide a clear milestone based plan covering the major modules and deliverables. Portfolio: https://www.freelancer.com/u/Hammadhassan21 Best regards, Hammad Hassan

@ranjika08

What you’re really buying here is architecture quality as much as features, because an ecommerce app with weak module separation becomes expensive every time you add a role, payment method, or admin workflow. I’d start by mapping the core commerce flows, user roles, and payment abstraction so the backend stays extensible and the mobile/web apps remain cleanly connected. I’ve handled custom platform work involving REST APIs, admin panels, secure auth, and deployment-ready builds where documentation and maintainability mattered just as much as delivery. For a project like this, regular Git commits, review checkpoints, test coverage, and Docker-based deployment should be built into the process from the start, not treated as extras. A couple of points will help define the first development sprint: - Do you need vendor/seller management too, or only a single-store admin model? - Is there a preferred cloud/server environment for Docker deployment? - Should search/filtering support advanced facets from day one, or start with standard category/attribute filters?

@p4logics

Hello Sir, I understand you are looking for a secure and highly scalable e-commerce platform that includes both mobile apps and a comprehensive web admin panel. I will build this solution exactly on your requested tech stack using Flutter, Angular, Java Spring Boot, and PostgreSQL, and I will specially design a modular payment system so you can easily plug in new payment gateways later without changing the core backend. Along with building the cart and order tracking features, I will deliver a fully tested, Docker-deployed system with audit logs, complete API documentation, and transfer full source-code ownership to ensure your business is ready for future growth

@Walkingdreams

As the leader of Walking Dreamz Technologies, my team and I have over a decade of experience delivering robust web, mobile, and software solutions to clients worldwide. Our range of expertise includes specializing in custom MERN web apps (such as dashboards, SaaS, admin panels, and education platforms), WordPress & WooCommerce, AI & automation. To date, we have completed over 300 projects with an impressive 99% positive review rate. In terms of your project requirements for the e-commerce app development and considering our existing skillset, we are perfectly adept at working with the technologies you prefer. We are proficient in Flutter for Android and iOS development and well-versed in Java Spring Boot REST API for backends. Additionally, our proficiency in Angular and TypeScript will aid in creating a comprehensive Web/Admin platform. JWT-based authentication implementation for your project poses no problem to us - it's something we've done several times before. Furthermore, my team values effective communication and transparency throughout the development process. From presenting a detailed roadmap with clearly designed milestones to providing regular demos and transparent progress updates, our dedication lies not only in meeting deadlines but exceeding client expectations. Adding to that, our post-launch support includes production-ready deployments with extensive documentation.

@doomshellsl

Hello, We can build your complete e-commerce platform from scratch for Android and iOS, with a scalable backend, admin dashboard and production-ready infrastructure. We understand that this project requires more than just a mobile app. The solution needs secure authentication, product/catalogue management, search and filtering, cart, wishlist, checkout, modular payment integration, order tracking, notifications, role-based access, audit logging, automated testing, API documentation and Docker-based deployment. Our team can provide: Flutter-based Android & iOS mobile applications React Native development capability as an alternative cross-platform approach RESTful backend APIs and PostgreSQL database Angular/TypeScript admin dashboard JWT authentication and role-based access control Secure and modular payment gateway integration Push notifications and order management Docker, Linux/Nginx deployment Swagger/OpenAPI documentation QA, automated testing and security-focused testing We will build the architecture modularly so additional payment gateways, features and integrations can be added later without a complete rewrite. We can work through Git with milestone-based development, regular commits and clear documentation, while providing complete source-code ownership upon delivery. We’d be happy to discuss the architecture and development roadmap in a quick 10–15 minute call.

@AnumFatima210

Hi, I went through your project details and understand what you're looking to achieve. I'd be interested in working with you on this. Based on the requirements you've shared, I can handle the project from start to completion while keeping the work aligned with your expectations, timeline, and desired outcome. My approach is straightforward: first, I'll make sure the requirements and expected deliverables are clear. Then I'll complete the work in structured stages, share progress along the way, incorporate your feedback, and deliver the final work after everything has been reviewed. Before we begin, I have a couple of questions about your requirements that will help me understand the scope more accurately. Feel free to message me so we can discuss the details and determine the best way to move forward. Best regards, Anum

@giaphung2k1

Hello I can transform Fhbsolutions into a high-performing, secure iOS and Android shopping app using Flutter to seamlessly mirror your current e-commerce functionality, catalogue, and payment gateways into an intuitive mobile experience. Having successfully launched multiple cross-platform retail apps with frictionless checkout flows, I ensure clean, scalable code and a native feel. Would you like to review some of my recent e-commerce app projects before we dive in? Best regards, Giáp Văn Hưng

@crtvecode

When an e-commerce app needs to replicate existing functionality while making sure a smooth user experience, the real challenge lie in integrating smoothly with your current systems and maintaining performance across platforms. To address potential concerns about the transition, I will build the app without disrupting your live site or services at any point. Planning phases: Initial assessment: Review your existing APIs and design assets thoroughly. Development build: Create apps in a private environment, making sure no downtime. Testing phase: Rigorous testing to guarantee performance and compliance with store requirements. Final handover: Provide source code, build instructions, and a walkthrough. What is your prefered timeline for this project? Rajavel

@mrresearcher99

Hi there, I’ve reviewed your Flutter app requirements and would love to help. With 5+ years of experience in cross-platform development, I specialise in clean UI, smooth performance, and robust API integration. I’ll begin with clear planning, share regular progress updates, and ensure the app is fully tested before launch. Let’s connect to discuss your vision — I’m ready to get started! Best, Bhargav Flutter Developer | Android & iOS Expert

@naminghn

Hi there, I see the need for a robust mobile shopping experience that mirrors your existing e-commerce functionality. I can design and develop a cross-platform app using React Native or Flutter, ensuring a seamless integration with your existing REST/GraphQL APIs. This will cover crucial features like login, product search, and payment methods while maintaining consistent UX across platforms. I am ready to help bring your vision to life with a focus on optimizing performance and meeting submission requirements. Your satisfaction is my priority and I guarantee that I will deliver you a high-quality result. Regards, Ali