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I’m putting together a high-performance booking layer for a multi-tenant hospital & clinic platform and need a specialist to build the core REST/SignalR API from the ground up. The service must push live slot updates via Signal R, keep latency low with Redis caching, and protect every endpoint behind JWT and role-based policies. The API will feed both our web dashboard and Flutter/iOS/Android apps, so clean, well-documented Swagger/OpenAPI specs are essential. Typical flows include searching available doctors, confirming appointments, rescheduling, or cancelling—each action triggering automated promo messages as well as an AI-powered auto-reply that immediately answers common patient questions. Interactive messaging should go beyond simple “yes/no” responses. In-thread features have to cover: • autoNotifications (appointment confirmations, reminders, follow-ups) • real-time wait-time alerts pulled from our queue engine • contextual tips based on the patient’s stored medical history (FHIR-compatible format) Deliverables 1. Production-ready .NET (C#) solution with layered architecture (domain, application, infrastructure) 2. Signal R hub for live slot broadcasts and chat-style patient replies 3. Redis integration (cache aside pattern) with sensible expiry keys for schedules and doctor metadata 4. Secure JWT auth with refresh tokens, role scopes, and unit tests covering auth paths 5. Postman/Swagger collection illustrating all endpoints and example payloads 6. Read-me & deployment script (Docker-compose or Helm chart) for staging Acceptance Criteria • Average response time under 150 ms for search/booking endpoints under a 500 rps load • Real-time updates visible across at least two simultaneous client connections in <1 s • 100 % branch-covered tests for authentication and booking lifecycle • Automated CI run proves container builds, migrations, and seed data execute without errors If you’ve built healthcare or high-traffic booking systems before and can show measurable performance gains, I’d love to see your approach.
ID do Projeto: 40141387
120 propostas
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Ativo há 19 dias
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120 freelancers estão ofertando em média $21 USD/hora for esse trabalho

Greetings from Logictrix! My name is Jas, and I am looking forward to discuss about your app in details over the Chat or Call. We have enough app developers available in team so I can assure you to deliver this project at a fairly low cost with great quality and with a commitment for long term support. *** We have now earned 'Expertise' level in AI, ChatGpt and a couple of other AI platforms for App development and other Chatbot work! *** We have developed around 400+ Android and iOS apps using Native and Flutter SDK in the past 15 years, Many apps are Live in Google play and App store. We will share our detailed portfolio over the Chat once we connect. Looking forward to your reply... Thanks and Regards Jas
$15 USD em 40 dias
9,5
9,5

Hello, I’ve reviewed your requirement for a Real-Time Medical Booking API and clearly understand the scope: a high-performance, multi-tenant system with SignalR live updates, Redis caching, JWT-based security, and FHIR-compatible patient context. I have 10+ years of experience in backend and full-stack development, including .NET/C#, high-concurrency APIs, healthcare integrations, and real-time messaging systems. I can design and deliver a production-ready solution with layered architecture, robust auth, low-latency search and booking flows, and clean, well-documented Swagger/OpenAPI endpoints. Key deliverables I will provide: Production-ready .NET (C#) solution with domain, application, and infrastructure layers SignalR hub for real-time slot updates, auto-notifications, and AI-powered contextual replies Redis cache integration for schedules, doctor metadata, and queue wait times Secure JWT authentication with refresh tokens, roles, and unit-tested auth flows Postman/Swagger collection with example payloads Deployment scripts (Docker-compose/Helm) and read-me documentation I WILL PROVIDE 2 YEAR FREE ONGING SUPPORT AND COMPLETE SOURC CODE, WE WILL WORK WITH AGILE METHODOLOGY AND WILL GIVE YOU ASSISTANCE FROM ZERO TO PRODUCTION DEPLOYMENT. I am available to start immediately and will ensure sub-150ms response times under load, <1s real-time updates, and fully covered authentication and booking lifecycle tests. I eagerly await your positive response.
$15 USD em 40 dias
8,0
8,0

Greetings, My understanding is that you want a high-performance booking API for a multi-tenant hospital and clinic system. Do different hospitals and clinics have their own rules for slot length, doctor availability, and booking limits? How is your current queue engine structured, and do you already have an API for wait-time data? I have worked on booking, messaging, and high-traffic platforms where low latency, clean architecture, and strong security are very important. For quick response & one-on-one communication, you may click on the chat button, as I am online most of the time. FYI. current bid amount is placeholder to submit the proposal. Look forward to hearing from you thru' chat. Best Regards, Yasir LEADconcept PS: Let me know, if you want to see our team past work to determine our skills/expertise or past customer's references.
$25 USD em 40 dias
7,9
7,9

With a rich background spanning over two decades in IT technology, I'm confident that my skillset can not only help build your real-time medical booking API but take it further - transforming your healthcare platform into an efficient, robust, and user-friendly system. My expertise in full-stack web and mobile development and knowledge of advanced databases align perfectly with the project requirements. Moreover, throughout my career, I have worked on projects dealing with large data sets that required high-performance handling, just like yours. I'm skilled in C# programming and database management - notably, Redis for your caching needs - and this showcases my adaptability to your project's demands. Rest assured, my solutions always meet critical performance targets while still maintaining crucial security measures such as JWT authentication. Additionally, as an AI enthusiast, I bring tremendous value to the table in terms of leveraging AI-driven auto-reply systems and contextual tips from stored medical history in FHIR format. These features will not only reduce workload on patient support but lead to improved patient satisfaction overall. Overall, leveraging on my experience working on healthcare projects and building systems for high traffic load plus proven commitment to quality with a guarantee of bug-free delivery make me the ideal fit for this role. I am eager to discuss further how my skills and expertise can maximize the potential of your project. Choose me!
$25 USD em 40 dias
7,1
7,1

With extensive experience in software and app development, with a core on RESTful APIs, I have a thorough understanding of what this project requires. My team and I have built high-performance applications for multiple industries, including healthcare. We know how crucial it is to keep latency low and ensure the utmost security for such systems. Regarding performance delivery, your project needs real-time updates visible on multiple platforms with minimal delay. We have leveraged Signal R for similar functionalities and achieved near-instantaneous response times. For clean communication and compatibility with your diverse client platforms, we are adept at working with Swagger/OpenAPI specs. Our familiarity with contextual AI messaging complements the nature of your project well. We have not only responded in-context but also successfully used FHIR-compatible formats to pull data for intelligent messaging. Overall, if you're looking for a team that is well-versed with these technologies, deeply understands the domain and has a track record of meeting or exceeding performance targets as specified in your acceptance criteria then we are the team you should choose!
$20 USD em 40 dias
7,3
7,3

Hello, I will develop your MOBILE APPLICATION for Android and IOS both platforms with Web admin panel. I am Tulsiram. I have 10 years of experience working as Native and Crossplatform mobile application developer. I am understood your requirements. I am glad if we are working together. If you interested then let's connect. I will provide you Daily updates ,source code after development completed, 1 Year maintenance Support in following Steps: I will available daily 10-12 hours in Working days for you. I will provide you regular updates according to which modules we will decided. After approval each module by you then i will provide your complete source code of your project and will shift on your Domain. Thanks
$15 USD em 40 dias
6,3
6,3

Hi I build high-throughput .NET booking APIs with Clean Architecture, SignalR, Redis cache-aside patterns, and JWT/RBAC hardening. A key technical risk is oversubscription and race conditions when multiple clients book or reschedule the same slot while live updates are broadcasting. I solve this with optimistic concurrency (rowversion/ETags), atomic booking transactions, and idempotent command handlers that emit SignalR events only after commit. Redis will cache doctor metadata and schedule availability with well-scoped keys, TTLs, and invalidation on booking lifecycle events. Swagger/OpenAPI will be contract-first with example payloads, error schemas, and versioned endpoints for web + Flutter/mobile clients. Messaging will be implemented as a chat thread model with notification pipelines, wait-time events from your queue engine, and FHIR-compatible context retrieval. The AI auto-reply will be isolated as a “signal-only” responder service so business decisions remain deterministic and policy-controlled. Thanks, Hercules
$50 USD em 40 dias
6,1
6,1

Hello, I will build you a real-time medical booking API using .NET Core that handles appointment scheduling, availability checks, doctor-patient matching, and notifications smoothly so your frontend or mobile app can connect and manage bookings without lag or confusion. I have built booking APIs before and know how to design endpoints that handle concurrent requests properly, manage real-time availability updates so double-bookings never happen, send notifications when appointments are confirmed or cancelled, and structure everything with clean code and proper authentication so the system stays secure and scalable as your user base grows. Looking forward to discussing further. Best regards, Kamran
$20 USD em 40 dias
7,0
7,0

Hi there, I’m excited about your project to develop a high-performance medical booking API tailored for your multi-tenant platform. With extensive experience in building scalable REST and SignalR APIs, I am confident in delivering a solution that meets your specifications and exceeds your performance expectations. I've previously developed healthcare systems that require low latency, and I understand the critical need for secure JWT authentication, real-time updates, and documentation via OpenAPI specifications. Leveraging Redis for caching and constructing a production-ready .NET solution is exactly what I do, and I'm prepared to meet your criteria, including a robust automated CI process to ensure smooth deployments. Let’s collaborate to bring your vision to life! Please message me with any further details or questions you have about this project. What specific metrics do you have in mind for measuring the success of the API once deployed?
$30 USD em 15 dias
5,7
5,7

Hi Salama A.. I am very excited with your project because I have completed similar project recently. The skills required for your project are my main specialty. I can handle this perfectly and have abundent experiences. Please confirm that I am one of the best fits for you and drop me a message for further discussion. Thanks and Best Regards. Brayan Stiven A.
$20 USD em 10 dias
5,8
5,8

Hello There!!! ⚜️⭐⭐⭐⭐⚜️(( Building a high-performance, real-time medical booking API with SignalR and Redis ))⚜️⭐⭐⭐⭐⚜️ Your project is about creating a robust multi-tenant booking API for hospitals and clinics that can handle live slot updates, low-latency queries, and AI-driven patient interactions. The system must work seamlessly across web and mobile clients with secure JWT authentication and role-based policies. I have extensive experience in .NET Core, building real-time APIs using SignalR, integrating Redis caching, and designing high-performance healthcare workflows. I also prioritize clean architecture and well-documented Swagger/OpenAPI specs to make maintenance straightforward. Top three critical features I will focus on: 1. SignalR hub for sub-second live updates to all connected clients 2. Redis caching for instant access to doctor schedules and metadata 3. Secure, role-based JWT authentication with refresh tokens and full unit test coverage I can deliver a production-ready, containerized solution with clear documentation and CI/CD setup to ensure fast deployment and maintainability. Let’s discuss your exact patient flows and real-time requirements to plan the MVP architecture. Warm Regards, Farhin B.
$15 USD em 40 dias
6,3
6,3

Hello, Hope you are doing well! I am a .NET developer with strong expertise in building secure, scalable, and high-performance applications. I work with both frontend & backend frameworks to deliver end-to-end solutions using modern Microsoft technologies. What I Can Deliver: 1. Full backend development using .NET Core 2. Secure & scalable RESTful APIs 3. Enterprise web applications with MVC or Razor Pages 4. Fully optimized SQL Server databases 5. Payment gateway / third-party API integrations 6. Role-based authentication & authorization 7. Admin dashboards, CRUD operations, reporting modules 8. Microservices architecture (if required) 9. Application maintenance & bug fixing 10. Cloud deployment (Azure App Services / AWS) Why Choose Me: 1. Clean, maintainable & scalable code 2. Strong problem-solving & debugging skills 3. On-time delivery with proper documentation 4. Experience in enterprise-level systems 5. Strong communication & requirement understanding Let's Get Started Share your requirements or a sample/reference website — I will provide: 1. Best approach 2. Timeline 3. Cost estimate Looking forward to working with you!
$15 USD em 40 dias
5,7
5,7

Hi there, I’ve carefully analyzed your requirements for a high-performance, multi-tenant hospital booking API with real-time updates. I’ve previously built .NET Core booking and scheduling platforms using SignalR, Redis caching, and JWT/RBAC, supporting web and mobile clients with sub-200 ms response times and live slot synchronization across concurrent users. The key aspects of your project are low-latency search and booking, real-time slot broadcasting, secure JWT authentication, and rich, in-thread patient messaging. I’ll design a clean layered .NET architecture, implement SignalR hubs for live slot and message updates, use Redis with a cache-aside strategy, secure all endpoints with JWT and role scopes, and deliver full Swagger/Postman documentation, tests, and Docker-based deployment. I’m available to begin work immediately and am committed to delivering a production-ready, performance-tested API within the shortest possible timeframe. Best regards, Elenilson
$15 USD em 40 dias
5,5
5,5

Dear Hiring Manager, I understand you need a high-performance, multi-tenant medical booking API with SignalR for real-time slot updates, Redis caching, JWT-secured endpoints, and FHIR-compatible contextual messaging. I will share my portfolio on your first message. Implementation Approach: • Build .NET (C#) layered API with domain, application, and infrastructure separation • Implement SignalR hub for live slot broadcasts and AI-powered patient messaging • Integrate Redis cache with expiry strategies for schedules and doctor metadata • Secure endpoints with JWT, refresh tokens, role-based policies, and unit tests • Deliver Swagger/Postman specs and Docker-compose deployment scripts Queries: • Are AI auto-replies processed in-app or via an external service? • Should Redis handle both schedule and patient metadata caching? • Is there a preferred CI/CD pipeline for container deployments? I will be waiting for your response. Kindest Regards,
$15 USD em 40 dias
5,3
5,3

Hi there, I can build a high-performance, multi-tenant booking API in .NET (C#) that meets your specifications. The solution will feature a layered architecture (domain, application, infrastructure) with SignalR for live slot updates and interactive, chat-style patient messaging. I’ll integrate Redis caching (cache-aside pattern) to keep latency low, secure all endpoints with JWT + role-based policies, and ensure complete unit test coverage for authentication and booking flows. Endpoints will be fully documented with Swagger/OpenAPI and tested with Postman for both web and mobile clients. Core features include appointment search, booking, rescheduling, and cancellations, all triggering automated notifications, AI auto-replies, and context-aware tips using FHIR-compliant patient data. The system will support <150ms response under 500 rps and <1s real-time updates across multiple clients. Deliverables include the production-ready API, SignalR hubs, Redis integration, secure auth, CI-ready containerized deployment (Docker/Helm), and full documentation.
$20 USD em 40 dias
5,9
5,9

Hello! As per your project post, you are looking to build a high-performance, multi-tenant medical booking API that powers hospital and clinic platforms with real-time updates, low latency, and secure role-based access. The API must support appointment search, booking, rescheduling, and cancellations, while pushing live slot updates via SignalR, leveraging Redis for caching, and providing JWT-secured endpoints. It will serve both web dashboards and mobile apps (Flutter/iOS/Android), with full Swagger/OpenAPI documentation for seamless integration. This includes contextual patient notifications, AI-driven auto-replies for common inquiries, and integration with FHIR-compatible medical data for personalized tips and alerts. All endpoints will follow clear standards, ensuring developers can integrate smoothly with web or mobile clients, while automated flows like reminders, wait-time alerts, and follow-ups work reliably under high concurrency. I specialize in building healthcare-grade APIs where performance, security, and real-time data are critical. My approach emphasizes clean architecture, structured documentation, strict security policies, and scalable caching strategies to maintain consistent performance as patient volume grows. Let’s connect to confirm the booking flows, real-time messaging rules, and tenant management so we can deliver a fast, secure, and fully documented medical booking API. Best regards, Nikita Gupta.
$15 USD em 40 dias
5,1
5,1

⭐Hi, I’m ready to assist you right away!⭐ I believe I’d be a great fit for your project since I have extensive experience in developing high-performance RESTful APIs and Signal Processing systems. My background includes building complex booking systems and APIs that cater to multi-tenant platforms. I have specialized in creating secure APIs with JWT authentication, Redis caching for low latency, and role-based access control. Additionally, I excel in developing scalable solutions for web and mobile applications using .NET Core. This project aims to solve the critical need for a real-time medical booking API that ensures fast updates, secure access, and interactive messaging capabilities. By delivering a robust solution with production-ready architecture and thorough documentation, I can address the project's requirements effectively. If you have any questions, would like to discuss the project in more detail, or would like to know how I can help, we can schedule a meeting. Thank you. Maxim
$20 USD em 21 dias
4,5
4,5

As a seasoned developer with a broad skillset spanning both backend and frontend technologies, I am exceptionally suited for your real-time medical booking API project. My proficiency in C#, Asp.net and Node.js aligns perfectly with the core requirements of your project. I've got solid experience designing and implementing REST/SignalR APIs, and have successfully leveraged Redis caching to significantly lower latencies in similar high-traffic systems. What sets me apart is an extensive track record in healthcare and booking systems, having spearheaded similar projects to resounding success. My understanding of the dynamic healthcare landscape, layered architecture, JWT authentication for secure access to patient data, AI-powered automated replies, FHIR integration for contextual tips are all key strengths that your project stands to benefit from. My keen emphasis on performance through branch-covered tests and CI automation dovetails perfectly with your acceptance criteria. To add clarity and ease of use in this comprehensive system, I will provide fully-documented Swagger/OpenAPI specs, Postman collections for easy testing and deployment scripts using Docker-compose or Helm Chart for staging. Let's work together to build a robust system that positively impacts medical facilities and patients alike.
$25 USD em 40 dias
4,6
4,6

Hello, I've built several high-traffic booking APIs for healthcare and appointment platforms, so your real-time medical booking layer fits my expertise perfectly. I'll deliver a production-ready .NET solution with SignalR for live slot updates, Redis caching (cache-aside pattern), JWT auth with refresh tokens and role-based policies, plus FHIR-compatible patient history integration. Architecture will follow clean layered design—domain, application, infrastructure—keeping response times under 150 ms at 500 rps. SignalR hub will push live slot changes and handle chat-style auto-replies for common patient questions. All endpoints documented via Swagger/OpenAPI with Postman collection included. Deliverables cover automated promo messaging, wait-time alerts from your queue engine, contextual medical tips, Docker-compose deployment script, comprehensive unit tests (100% branch coverage for auth and booking flows), and CI pipeline proving migrations and seed data execute cleanly. Questions: • Do you have an existing database schema or should I design from scratch around your multi-tenant model? • Any preference for Redis hosting—self-managed or cloud service like Azure Cache? Looking forward to building a fast, secure API your web dashboard and mobile apps can rely on. Thanks and best regards, Faizan
$19 USD em 40 dias
4,3
4,3

Hi, there. The hardest part of real-time medical booking isn’t SignalR itself — it’s guaranteeing slot integrity under concurrent load. I’ve seen booking layers fail when cache and database writes drift, resulting in double-bookings or phantom availability. I’d build this as a .NET layered service where the database is the single authority for bookings, Redis accelerates reads, and SignalR only broadcasts confirmed state changes. Booking, reschedule, and cancel flows are transactional and idempotent, with Redis cache-aside invalidation keyed by doctor and date. JWT scopes and roles are enforced at the application layer, with auth paths fully unit-tested. I’d sequence work by locking the domain model and booking lifecycle first, then SignalR hubs, Redis strategy, AI/notification hooks, and finally performance testing and CI hardening. Do you already have a canonical source for doctor schedules, or should this API own schedule creation as well?
$45 USD em 40 dias
4,4
4,4

Cairo, Egypt
Membro desde jan. 12, 2026
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