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We are looking for an experienced Full-Stack Developer or a professional software development team capable of developing our eSIM Sales & Management Platform from start to finish. The project will be built around eSIM package listing, purchasing, delivery to users, activation process management, usage tracking, Top-Up / package renewal operations, and integrations with multiple eSIM providers. The platform will be developed as both a web-based system and iOS & Android mobile applications. The mobile applications must be delivered in a condition ready for publication on the Apple App Store and Google Play Store. The project design and comprehensive requirements documentation are already prepared. All technical details, system architecture, modules, user flows, design links, and project requirements are explained in detail in the attached file. Please make sure to review the entire attached document before applying or submitting a quotation. eSIM API Status We already have access to the Airalo and eSIMGo APIs. However, the developer or development team will be responsible for contacting 1GLOBAL directly, handling the required application and communication process, and following up until access to the 1GLOBAL eSIM API is obtained. Main Project Scope 01 - Web Platform 02 - iOS & Android Mobile Applications 03 - User Registration and Login System 04 - eSIM Package Listing System 05 - eSIM Purchase System 06 - QR Code / Activation Information Delivery System 07 - eSIM Setup and Activation Process 08 - Order Management System 09 - Top-Up / Package Renewal System 10 - Multi-eSIM Provider API Integrations 11 - Provider Adapter Layer / Provider-Independent Backend Architecture 12 - Admin Panel 13 - Multi-Language and Multi-Currency Support 14 - AI-Powered eSIM Setup and Activation Assistant 15 - AI-Powered User Engagement and Automation System 16 - SEO and Marketing Management 17 - Country / Destination SEO Management 18 - Affiliate / Referral System 19 - Notification System 20 - Analytics and Reporting System 21 - Secure, Scalable and Production-Ready Backend & REST API Infrastructure The items above are only a general summary of the project scope. The project scope is not limited to this list. A comprehensive project requirements document has been prepared. It includes detailed information regarding: System architecture Web platform iOS and Android mobile applications Admin panel eSIM provider integrations Purchase and payment processes QR code and activation processes Top-Up and package renewal system AI-powered features Notification and automation systems SEO and marketing infrastructure Analytics and reporting Security requirements Testing and production processes and all other project modules. Evaluation Process Developers or teams who apply will first be evaluated based on their previous projects, technical experience, and systems they have developed at a similar scale. We especially prefer developers or teams with experience in areas such as: eSIM / Telecom, API integrations, marketplace systems, payment infrastructures, mobile applications, AI automation, and scalable backend systems. After reviewing the attached documentation, please provide the following information: 01 - Your total price quotation for completing the entire project 02 - Your estimated delivery timeline for completing the entire project 03 - The technology stack you plan to use 04 - Similar projects or reference works you have previously completed Relevant previous projects and references will be given priority during the evaluation process. Project Delivery Timeline The total project delivery timeline is an important requirement for us. The entire project must be fully completed and delivered in a production-ready condition within a maximum of 3 months. It is important that this timeline is not exceeded. Important Note All project details are explained comprehensively in the attached file. Therefore, before providing a price quotation or delivery timeline, we specifically request that you review the entire attached document carefully. Providing your price, delivery timeline, and technical approach after reviewing the documentation will allow both parties to proceed with a much clearer and more efficient process. This is a long-term and comprehensive project. Therefore, we are looking not only for a technically capable developer or team, but also for a reliable partner who can communicate regularly, provide transparent progress updates, and complete the project fully from the initial development stage through production deployment.
Project ID: 40686036
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174 freelancers are bidding on average $2,642 USD for this job

Hi there, We understand you're looking for a skilled Full-Stack Developer or a professional software development team to build your comprehensive eSIM Sales & Management Platform, encompassing both web and mobile applications, with features like eSIM package listing, purchasing, and integrations with multiple eSIM providers. At Webbook Studio, with 17 years of experience and a 5.0 rating across 458 reviews on Freelancer, we're confident in our ability to deliver this project. Our team has relevant experience in full-stack development, mobile app development (including React Native), and API integrations, as seen in our previous projects like the music voting mobile app built with React Native and Node.js, and our work on e-commerce platforms with integrated payment systems. We'll deliver a scalable, secure, and production-ready platform, including a web-based system, iOS and Android mobile applications, and all the specified features such as user registration, eSIM package listing, purchase system, and multi-eSIM provider API integrations. One question: How do you envision the AI-powered eSIM setup and activation assistant, and what specific functionalities would you like to see implemented in this feature? Feel free to message us to discuss the details! — Webbook Studio
$1,600 USD in 30 days
9.2
9.2

I understand the critical importance of developing your eSIM Sales & Management Platform, a project that requires a high level of proficiency in full-stack development and mobile applications integration. With my background in creating high-scale systems for over a decade, including serving over 1 million users, I am well-equipped to tackle the complexities of this project. One strategic insight I would like to share is the implementation of a provider-independent backend architecture to ensure seamless integration with multiple eSIM providers, as well as utilizing AI-powered features for setup and activation assistance. Having successfully worked on similar projects in the past, I am confident in my ability to deliver a secure, scalable, and production-ready solution within your required timeline. I am prepared to discuss the roadmap further to align our strategies and ensure a successful partnership in bringing your eSIM platform to fruition. Please feel free to reach out to me for a detailed discussion on how we can best approach this project together. Thank you for considering my proposal.
$2,400 USD in 30 days
9.2
9.2

Hello, Regarding your project, i would like to discuss the app features in detail to better understand your requirements. i am a mobile applications developer and i have more than 8 years of experience developing mobile applications with backend services. i have developed many Business Solutions from scratch to Stores ready applications. i have completed more than 550 projects. i have live sample apps for you. i am super confident i will provide you best quality software services on time and on budget. Let's chat to proceed.
$6,500 USD in 30 days
8.8
8.8

Hi, I reviewed the request for an end-to-end eSIM Sales & Management Platform, including the web system, iOS/Android apps, package listing and purchase, activation delivery via QR/activation info, order management, top-up/renewal, and multi-provider integrations. I’ll implement a provider-independent backend with a clean REST API layer, then connect PHP modules for Database Development, authentication, usage tracking, analytics/reporting, notifications, and a scalable admin panel. I’ll also prepare mobile app builds ready for Apple App Store and Google Play submission, integrating the eSIM provider flows and activation process management. I focus on secure, production-ready delivery with transparent communication and clean code for easy maintenance. Let’s discuss here now.
$1,500 USD in 30 days
8.5
8.5

As an experienced Senior Full-Stack Developer with over a decade of service delivery, I'm genuinely excited about the opportunity to construct your eSIM Sales & Management Platform. My proficiency covers stack ranging from AI integration, custom API development, and scalable backend systems design which are crucial for your project's success. Throughout my career, I've designed and developed complex web platforms and mobile applications. These experiences equip me to handle the multi-dimensional aspects of your project incisively - from user registration and eSIM package listing to top-up/payment systems and AI-powered automated features. My knowledge in API integrations, payment infrastructures and telecom sectors will be a great advantage in managing various eSIM providers as required. Not only do I bring a wealth of knowledge but also great professional rigor. With coherence/examplection such as implementation, debugging, testing, maintenance, security optimization in my arsenal. With your document's detalied explanation of system architecture, technical requirements down to testing/production/& reporting i can guarantee to bring your desired platform to life within the specified timeline.
$2,250 USD in 7 days
8.2
8.2

Hello We are Ominfowave Software Services Pvt. Ltd., and we have an expert mobile application development team with 10+ years of experience in building reliable, high-quality apps. ? Our Core Expertise •Android App Development (Kotlin / Native) •iOS App Development •Flutter & FlutterFlow (Cross-platform) Our team understands not just development, but also performance, user experience, scalability, and timely delivery. ? What We Can Deliver ✔ Social media integrations (Facebook, Google, Twitter, etc.) ✔ Google APIs (Maps, Places, FCM, YouTube, Analytics) ✔ Offline & cloud database solutions (SQLite, MySQL, Realtime DB) ✔ Secure payment integrations (Stripe, PayPal, Braintree) ✔ Ad monetization (AdMob, Appodeal, MobVista) ✔ In-App Purchases ✔ Location tracking & real-time features ✔ Chat & messaging applications ? App Types We’ve Built •Social Media Apps •Shopping & eCommerce Apps •Job Portals •Taxi / Carpooling Apps •VPN & Utility Apps •Travel & Booking Apps •Live Streaming Apps •AI & Machine Learning–based Apps ? Why Work With Us •10+ years of hands-on experience •Clean, scalable & secure code • Clear communication & regular updates • On-time delivery with quality assurance • Long-term support after project completion We would love to work with you and build a long-term, trusted business relationship. Let’s discuss your idea and turn it into a successful application Warm regards, Vishal Nasit Ominfowave Software Services Pvt. Ltd.
$1,500 USD in 30 days
8.4
8.4

~~~~~~Available here to give you DEMO of ESIM project which i have done recently~~~~~~CEHCKED document-----------------Please PM me to see work. I am a Passionate PHP/Full Stack Developer having rich experience with PHP, Laravel, CodeIgniter, WordPress, WooCommerce, MySQL, JavaScript, React, Vue.js, Node.js, HTML, CSS, Bootstrap, REST APIs, API Integrations, AWS, Git & Docker with so many successful Projects. I have a few queries to understand your requirements and provide you with an accurate time and price. I have a strong history of successful projects and happy clients. If requested, I can provide references. Waiting for your response. Thanks!! Parminder
$2,900 USD in 15 days
8.1
8.1

Hi, As a tech enthusiast and highly skilled full-stack developer, I would be thrilled to take on the challenge of developing your eSIM Sales & Management Platform. Having developed systems at a comparable scale and with substantial expertise in areas like telecom, API integrations, marketplace systems, mobile applications, and scalable backend systems, I'm confident my skills align perfectly with the requirements of your project. Throughout my career, I have designed and built AI-powered applications, SaaS platforms, and other business automation systems that are not just functional but also scalable and maintainable. The fact that I put the impact on your business first instead of adding unnecessary features or increasing project scope would enable me to deliver on your request for a production-ready platform within the stipulated 3-month timeline. Beyond the development aspect, I bring a touch of reliability to the table. I value quality, communication, and long-term success - qualities essential for a long-lasting partnership. This is why clients have consistently chosen me--for the product-first thinking rooted in solid engineering expertise. Communication between us will be clear and transparent throughout the course of our collaboration. So if you're looking for more than just a programmer but a technology partner who can help you make better product decisions before writing code? Your search ends here; let's build something that lasts!
$1,500 USD in 27 days
7.6
7.6

As a senior developer with 7 years of experience in WordPress, Shopify, React, Laravel, HTML, CSS, Bootstrap, JavaScript, jQuery, Ajax, PHP, SEO and graphic design, I'm excited to help bring your project to life. Let's begin with a conversation. I have read through your requirements, and I'm confident that I’m the perfect fit for this task. My goal is to deliver work that exceeds your expectations. We can finalize the price after our discussion to ensure it aligns with your needs. Let's get started!
$1,500 USD in 1 day
7.3
7.3

Hi, I'm Denis. I've reviewed the eSIM platform project and see the need for a full-stack system with web and mobile apps, eSIM provider integrations, AI features, and a scalable backend. The project requires managing eSIM package listings, purchases, activation, top-ups, and multi-provider API integrations while ensuring security and scalability. The AI setup assistant and user engagement system depend on reliable data flows from the backend to the mobile apps. I’ve worked on similar systems with API-heavy integrations, real-time data synchronization, and multi-platform deployments. The architecture would include a provider-agnostic backend layer for different eSIM APIs, a secure authentication system, and a streamlined checkout flow. React Native would be ideal for cross-platform mobile apps ready for App Store and Play Store deployment. The admin panel would include role-based access for order, user, and provider management. The 3-month timeline is tight but feasible with a structured approach—phasing core backend and API setup, web platform, mobile apps, and AI integrations, while testing and provider API validations run in parallel. A key risk is variability in eSIM provider APIs, especially with 1GLOBAL. A flexible adapter layer and clear error-handling for API rate limits or failures will ensure system stability. I can start immediately. Let’s connect to discuss further. Thanks, Denis
$1,600 USD in 15 days
6.4
6.4

Hello there Hope you are doing well i have already develop so many similar portal and mobile application , i have 12+ yeare experience in IT filed Key Features User Web & Mobile Apps User registration, login and profile management Multi-language and multi-currency support eSIM package browsing by country/destination Search, filters and package comparison Package details: data, validity, coverage, network and pricing Secure eSIM purchase and checkout Order history and transaction management Instant eSIM delivery after successful payment QR code and manual activation information Step-by-step eSIM installation/activation guidance eSIM status and activation tracking Data usage monitoring Top-up and package renewal Multiple active eSIM management Push/email/in-app notifications AI-powered setup and activation assistant AI-powered user engagement and automation Affiliate/referral system Provider Integration Airalo API integration eSIMGo API integration 1GLOBAL API integration Provider-independent adapter layer Unified package/order/status/usage APIs Provider failover and error handling Webhook/event synchronization Admin Panel User and order management eSIM/package management Provider management Pricing and markup configuration Top-up/renewal management Payment and transaction monitoring Refund/cancellation management Affiliate/referral management Thanks & Regards Dheeraj K.
$1,500 USD in 15 days
7.2
7.2

Having carefully reviewed your project description and requirements, I guarantee that I and my team at Fourge have the expertise and experience needed to successfully complete your eSIM Platform. With a focus on Full-Stack Web Development, Mobile App Development (iOS, Android & Cross-Platform), AI & Machine Learning Solutions, Backend Development & API Engineering, and more, we have all the skills necessary to bring your project to life. As seasoned professionals, we've developed not just large-scale projects but similar ones too. Our familiarity with marketplace systems, payment infrastructures, mobile applications, AI automation, and scalable backend systems makes us perfectly positioned to actualize your eSIM platform vision. Given a 3-month timeline for delivery, rest assured that we make efficient use of time without compromising quality. We're fully aware of the time-bound nature of this project and the need to deliver a fully-functional system on time.
$2,250 USD in 7 days
6.3
6.3

Hi there, Building an eSIM Sales & Management Platform is a complex task with potential integration challenges, especially when dealing with multiple eSIM providers like 1GLOBAL. Ensuring seamless provider integrations and a smooth user experience across web and mobile platforms is crucial. Leveraging my expertise in API integrations and full-stack development, I can deliver a robust and scalable solution tailored to your requirements. Here are my questions: Have there been any preferred technology stacks mentioned in the design documents? Are there any specific functionalities that should be prioritized in the initial phase? Let's discuss your project now!
$2,500 USD in 30 days
6.1
6.1

Hi, I see you’re looking for an experienced full-stack team to build a complete eSIM sales and management platform across web, iOS, and Android. This is a large-scale project, and I have strong experience with API integrations, scalable backends, mobile apps, payment systems, admin panels, and automation. I can build the platform with a provider-independent architecture and integrate Airalo, eSIMGo, and 1GLOBAL, along with the required AI, payment, top-up, notification, SEO, affiliate, and analytics features. I’m comfortable working toward your 3-month production deadline and can provide the proposed technology stack, timeline, pricing, and relevant previous work after reviewing the complete requirements document. I’d be happy to discuss the project and get started.
$1,500 USD in 3 days
6.0
6.0

Hi, I’ve reviewed the complete attached requirements document and can help with the full eSIM platform across web, iOS, and Android, covering everything mentioned in the description. I have a few questions about the requirements. Would you be available for a quick call to discuss them? We can clear everything and then finalize the timeline and budget. What time works best for you?
$2,250 USD in 7 days
5.9
5.9

You need a full-stack team that can deliver an eSIM marketplace end to end, not just code a few screens. The hard part is coordinating provider APIs, activation flows, top-ups, order management, and production-ready mobile apps without breaking the backend. That’s exactly where we work. We’ve built API-driven platforms with payment, admin, multi-role access, and mobile-first user journeys, including systems that required third-party integrations and smooth handoff between web and app. We can take your documented scope, wire the provider adapter layer, implement the purchase-to-activation flow, and handle 1GLOBAL onboarding directly. We’ve done this before for scalable SaaS and marketplace products, shipping secure backends, REST APIs, and App Store / Play Store-ready apps. Best, NexLoom Labs
$1,500 USD in 8 days
5.4
5.4

Hi, this is a large eSIM platform build across web, iOS, and Android, with provider integrations, activation flows, top-ups, admin tools, and production-ready releases. I understand you need someone who can own the full delivery, not just code isolated features. I’ve worked on API-driven marketplace and mobile products where backend structure, payment flows, and release quality all had to stay reliable under growth. For this kind of build, I would focus on a provider-independent backend, clean adapter layers for Airalo, eSIMGo, and 1GLOBAL, then connect the web app, mobile apps, and admin panel around that core. I can work with modern full-stack architecture, mobile deployment, REST APIs, and scalable system design. I’d keep the implementation organized so each module is testable, maintainable, and ready for launch. If you’d like, I can review the document and map the delivery plan clearly. Best regards, Gabriel
$1,500 USD in 20 days
4.9
4.9

With my skills and experience as a Full-Stack Developer in the AI field, I guarantee you superior service delivery for your eSIM platform. Since AI automation is a crucial aspect of your project, my proven expertise with RAG Systems and Agentic AI systems would be a significant value-add to your team. I am adept at building scalable backend infrastructures with extensive API Integrations, including payment structures. Moreover, my track record in developing marketplace systems and mobile applications of such complexity aligns perfectly with your needs. I have unmatched proficiency in technologies like React Native & FastAPI-(Python) . With this stack, I promise an efficient and secure product across all platforms (Web/iOS/Android) and optimum integration of the Airalo and eSIMGo APIs you already possess. As a bonus, my PhD in Artificial Intelligence not only sharpens my problem solving skills but also equips me with exceptional analytical capabilities. This will prove invaluable in ensuring smooth eSIM setups, AI-driven user engagement and on time delivery of a production ready platform fully compliant with 1GLOBAL eSIM API requirements. Give me the opportunity to demonstrate just how effectively I can bring all these skills to bear in fulfilling your project's specifications.
$3,000 USD in 45 days
5.5
5.5

Hi, With more than a decade of experience in software application development, I am well-equipped to handle your eSIM Sales & Management Platform project. Throughout my career, I have successfully built complex, high-performance systems within allocated timelines, making sure to meet and exceed client expectations. Given that time is of the essence, you can rely on me to deliver a fully functional and production-ready platform in just three months. My skills span all areas relevant to your project's requirements; from API integration to scalable backend systems and mobile app development, I have got you covered. Notably, I have extensive experience with e-commerce/marketplace systems and payment infrastructures which will be vital for the eSIM package listing, purchase, delivery, and Top-Up/Renewal management functionalities of your platform. In addition, proficiency in AI/ML algorithms positions me well to implement the AI-powered features you requested such as the eSIM setup assistant and user engagement system.
$1,500 USD in 30 days
4.9
4.9

Hi, We have strong experience with custom PHP, Laravel, WordPress/WooCommerce, booking systems, payment workflows, and API integrations. We can extend your existing booking plugin without rebuilding it, while preserving current functionality and focusing on secure transactions, capacity control, teacher assignment, Cron workflows, and thorough regression testing. For concurrent bookings, we’ll use database transactions and row-level locking to prevent overbooking, with atomic availability checks for teacher assignment. We confirm USD 180 fixed/non-negotiable and staging-only development with no production access. We’re ready to review the existing architecture and start immediately.
$2,250 USD in 7 days
4.4
4.4

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