Mumbai App & IoT Integrator

@Microlent

Roles like this often look like straightforward integration work, but in practice the challenge is ensuring reliable device ↔ cloud communication across mixed protocols (BLE, Wi-Fi, NB-IoT) while handling edge cases like intermittent connectivity, payload consistency, and device state sync. I’ve worked on similar IoT integrations where the focus was building a stable application layer that cleanly bridges firmware and cloud systems, with proper API design and end-to-end validation. I can help with: Designing the integration layer (APIs, data contracts, protocol handling) Reliable two-way communication between devices and cloud dashboards Handling BLE/Wi-Fi/NB-IoT flows with fallback and sync logic Writing clean, well-documented, maintainable code Integration testing + reproducible setup documentation Supporting initial deployment and edge-case resolution I focus on robustness, clarity, and real-world reliability, not just getting devices to “connect.” For similar work and case studies: https://www.freelancer.com/u/Microlent Happy to discuss your current setup and outline the integration approach. — Rajesh Rolen

@OutsourceMan

With your Mumbai-centric project requiring a strong emphasis on hardware integration and local availability, I believe my firm, CnELIndia, is exceptionally well-suited for this role. We've been thriving in web and app development for nearly two decades and have extensively worked with technologies relevant to your stack - BLE, Wi-Fi, NB-IoT etc. As a top-rated authority in the field, our vast experience in system integration will ensure we connect your in-house boards seamlessly with off-the-shelf IoT modules so that they communicate reliably. At CnELIndia, we never just deliver software; we provide full-cycle solutions. We will not only build the functional application for you but also take charge of validating the data flow end-to-end, construct an integration test suite and provide comprehensive technical documentation - essential aids for both troubleshooting and replicating setups without our presence. Furthermore, our focus on React Native significantly enhances our proficiency in integrating software applications across devices prevalent in IoT frameworks especially since React Native boasts native compatibility with BLE. Our ability to work closely with your city-based hardware and testing teams makes CnELIndia a natural fit for this position as communications between both departments will be fluid without any bottlenecks. Allow us to leverage our skills alongside your incredible hardware to produce exceptional results for your business.

@Srashtasoft

Hi there, I have read your project requirement and you need a Mumbai-based developer who can handle the application-level system integration layer to enable reliable communication between your in-house hardware and IoT devices (BLE, Wi-Fi, NB-IoT), along with end-to-end data flow to cloud dashboards. We have strong experience in IoT system integration, including API architecture, device-to-cloud communication, firmware interaction, and building reliable, scalable application layers with proper testing and documentation. We can support coordination with hardware teams and ensure smooth handoff with stable deployments. A few quick questions: ==================== What is your current backend stack (Node.js, Python, Java, etc.) and cloud platform? Which communication protocols are primarily used between firmware and application (MQTT, HTTP, BLE GATT, etc.)? Do you already have API architecture defined, or should we design it from scratch? What level of on-site involvement in Mumbai is expected (weekly, milestone-based, or as needed)? Best Regards, Srashtasoft Team

@AZTURK1

Hi there, I understand you need a Mumbai-based engineer to own the application-level integration between your in-house boards and common IoT modules (BLE, Wi‑Fi, NB‑IoT), and to coordinate on-site with hardware and testing teams; my background in embedded-to-cloud integration and deployments makes me a precise fit. - Deliverable 1: Implement a production-ready application layer (REST/gRPC APIs + device agent) enabling reliable two-way communication between your firmware and cloud dashboards, with BLE/Wi‑Fi/NB‑IoT adapters configured. - Deliverable 2: Provide an automated integration test suite (unit+integration tests, simulated device harness) and concise technical runbook for technicians to replicate setups. - Deliverable 3: On-site coordination and hand-off support during initial client rollouts to resolve edge-case connectivity and timing issues. - Risk/Quality control: staged deployment with backup checkpoint and post-fix validation during on-site handover. Skills: ✅ BLE, Wi‑Fi, NB‑IoT ✅ Embedded C and device firmware integration ✅ API development (REST/gRPC) and system architecture ✅ Cloud integration and VPS/container deployment ✅ Reliability, monitoring and post-deploy validation Certificates: ✅ Microsoft® Certified: MCSA | MCSE | MCT ✅ cPanel® & WHM Certified CWSA-2 I’m available to start and can attend on-site sessions in Mumbai; Is this already running on a live production server or should I prepare a staged testbed for validation? Best regards,

@briskbrain

Hello Client, I have previously worked on a similar domain for a Sweden-based client, where we developed a comprehensive system covering multiple real-world use cases. The system includes modules such as: Sensor integration and monitoring Temperature tracking Indoor positioning and tracking Table tracking and waiter calling system Employee attendance using NFC I would be happy to walk you through a live demo of these modules to showcase the architecture, functionality, and scalability. Looking forward to discussing how I can contribute to your project. Regards, Manish

@CreativeIshan

As a seasoned developer with over 10 years in mobile app development, your project aligns closely with my skills and expertise. Throughout my career, I have not only built remarkable applications but also orchestrated seamless integration of various systems. This includes extensive experience working with IoT-driven applications, where I've successfully bridged gaps between disparate systems and ensured reliable and smooth data communication. Moreover, being locally available in Mumbai is a significant asset that I can bring to the table. This allows me to coordinate closely with your hardware and testing teams, as well as conveniently handle on-site sessions when required. My familiarity with the Mumbai ecosystem also enhances my ability to promptly resolve any challenges that might arise during the project, enabling smooth hand-off to clients. Lastly, with me you're not just getting technical expertise but a collaborative partner who believes in going above and beyond— Delivering concise technical documentation and a comprehensive integration test suite will ensure your technicians can replicate setups in your absence effortlessly.I look forward to discussing more about how we can leverage my skills for the success of your project. Get in touch today and let's build something incredible together!

@mahads31

As a Freelance Web & Software Developer with an unwavering commitment to building smart and scalable solutions, I believe I am an ideal fit for your Mumbai-based project. My rich experience in API development, software architecture, and software development, match seamlessly with your requirements of system integration for IoT-driven applications. The scope of your project – creating an application layer to enable smooth communication between your hardware and IoT devices is precisely what I excel at. Building clean and documented code is a standard part of my process, as is architecting APIs that are robust and efficient. This ensures a reliable two-way data flow while guaranteeing easy replication even in my absence through my thorough documentation. My client-centered approach aligns perfectly with your needs - understanding business goals rather than just technical requirements. That's why I don't just stop at delivering functional systems; instead, I offer continued support during hand-off to resolve any potential issues. Being locally available adds another level of convenience as we can have on-site sessions whenever necessary. It would be my pleasure to be a technology partner that helps you cope up with the increased demands of your growing business. I look forward to discussing how our collaboration can significantly impact the performance of your organization in the near future

@TheElitePro

Hi, 1. I understand you need a Mumbai-based developer, however I am from Ahmedabad which is nearby. 2. I have experience working on embedded + IoT integration layers, including API design, device-cloud communication, and coordinating closely with hardware teams. I focus on building stable, testable, and well-documented systems that work reliably in production. 3. Relevant experience: a) Built multiple device-to-cloud applications integrating STM32, ESP32, NXP controllers. b) Worked with BLE, Wi-Fi, MQTT protocols, and structured APIs for bidirectional communication c) Designed integration layers that simplifies hardware complexity for application use d) Collaborated with hardware/testing teams to debug real-world issues 4. Why I am suitable: a) Define clean API contracts between firmware and application layer b) Implement communication handlers (BLE/Wi-Fi/NB-IoT as required) c) Ensure robust data flow, retries, and error handling d) Build integration test suite for repeatability e) Document setup and workflows for your internal team f) Support on-site debugging and client hand-off 5. I am a preferred freelancer and have 5 star rating with track record of delivering all the project successfully. All this has resulted into repeat customers. Let's connect for your current requirement. Regards, Vishal

@nehasingh17

We at HardFault have solid experience in IoT system integration, helping hardware communicate smoothly over BLE, Wi-Fi, and NB-IoT. We can build the application layer, handle APIs, and ensure reliable end-to-end data flow with clean, well-documented code. Even though we’re not based in Mumbai, our dedicated team works closely with hardware teams remotely and delivers as a dependable extension of your setup. We can manage the full integration cycle and provide simple test suites and support during handoff, so your team can run things independently without friction. Since you already have a strong hardware side, we can be the right fit to strengthen your software capacity. Can you share what cloud platform or dashboard stack you’re currently using?

@ukokab

I am a software engineer based in Mumbai with 10+ years of experience building application layers that bridge hardware (custom boards) with IoT modules (BLE, Wi‑Fi, NB‑IoT). I will architect APIs, validate end‑to‑end data flow from device firmware to client dashboards, and work closely with your hardware and testing teams – including on‑site sessions when needed. ✅ Technical approach: - Build robust APIs (REST/MQTT) for two‑way communication between your hardware and cloud dashboards. - Handle device provisioning, data ingestion, command delivery, and error handling. - Write clean, documented code (Python/Node.js) with an integration test suite. - Coordinate with your firmware and QA teams on‑site for validation. Deliverables: Functional integration layer, test suite, technical documentation, and hand‑off support. Question: What protocol (MQTT, HTTP, CoAP) do your existing IoT modules and dashboards use, and do you have an API specification or sample device data I can use to start? Fixed price: $750 (or milestone‑based) | Timeline: 10‑12 days review_context_id=40330501&review_type=project&sb=t Best, Usman Kokab IoT & System Integration Developer

@utsav007pandya

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@nathanholmes

Handling the integration layer between your in-house boards and diverse IoT modules like BLE and NB-IoT requires precision, especially to ensure seamless communication across firmware and cloud dashboards. A key challenge is architecting robust APIs that maintain reliability amidst varied network conditions and hardware constraints. I propose building a modular API framework paired with comprehensive integration tests to catch inconsistencies early. This approach, combined with clear technical documentation, will empower your team to manage setups smoothly without heavy reliance on direct oversight. Having worked on similar IoT integration projects involving embedded firmware and cloud platforms, I’m comfortable collaborating closely with hardware teams on-site in Mumbai. Let me know if you’d like me to outline this further.

@Pieter21

I CAN DELIVER HIGH QUALITY RESULTS FOR YOU I understand you need a Mumbai-based developer to lead the integration layer connecting your hardware with IoT devices like BLE, Wi-Fi, and NB-IoT, ensuring a clean, seamless, and user-friendly communication system. With proven expertise in system integration, API architecture, and delivering professional, automated solutions, I create clean, documented code and validate end-to-end data flow. While I am new to Freelancer, I have extensive experience and have successfully completed numerous projects off-platform. I’d be happy to discuss your project in more detail. Even if you decide not to move forward with me, you’ll still gain valuable insights! Regards, Pieter

@vivekku410

Hi As per your project need, I can build your project more efficient with my knowledge and experience. I'm looking to work with you and I'm very sure that you'll feel great to work with me. Along with your project requirement, I'll provide you clean source code with free bug fixing and maintenance. I Have 8.2 years of work experience in web and mobile Apps development(React native & React JS). I have worked on so many projects. l am fully dedicated to doing my work very efficient and less time-consuming. "Looking forward to your positive response please open your chat window to more details" Thanks. regard, Vivek

@tamannarajput18

Having read your project description, it's clear that I'm the perfect fit for the role you have available. As a Full Stack Developer specialising in web and mobile applications, I bring a deep understanding of IoT integration and system architecture. My expertise with MEAN and MERN stack aligns perfectly with your project needs, aiding smooth communication between your hardware and off-the-shelf IoT modules. What sets me apart is my ability to deliver end-to-end solutions and integrate API-driven applications seamlessly; a skill that will be invaluable for connecting diverse systems in your project. My experience in MongoDB aligns with your focus on delivering secure, scalable systems - an attribute that you have highlighted as a priority. Moreover, with extensive experience in deploying my applications on various cloud platforms like AWS and DigitalOcean, I assure you that I'm familiar and comfortable working with multiple technologies concurrently. This adaptability makes me an ideal candidate for collaborating effectively with multitasking teams, such as yours. Working locally in Mumbai also allows for greater convenience - ensuring efficient and effective coordination between our teams. In conclusion, I assure you of delivery on time and meeting not only the stated requirements but also going beyond just development to support during troubleshooting &resolution of any issues that surface post-implementation

@sagarr1999

Hello , I design and build focused IoT system integration solutions with clean architecture, reliable device-to-cloud communication and maintainable application layers. For your requirement, I’ll develop the application-level integration that bridges your in-house hardware with IoT modules (BLE, Wi-Fi, NB-IoT), including API architecture, end-to-end data flow validation, and stable two-way communication between firmware and your cloud dashboards, while ensuring proper documentation and integration test coverage for your internal teams. Let’s discuss in chat as I have some queries to ask regarding the project to proceed further.

@techotd

Hi, I’m experienced in IoT system integration and application-layer development, and your requirement to bridge hardware with BLE/Wi-Fi/NB-IoT modules aligns well with my work. What I bring: • Experience integrating embedded devices with cloud systems via REST/MQTT APIs • Strong understanding of BLE, Wi-Fi communication flows, and device provisioning • Clean, modular code with full documentation for reproducibility • Hands-on work with end-to-end pipelines: device → API → cloud dashboard How I’ll approach your project: • Design a robust application layer (API + communication handlers) • Ensure reliable bi-directional data flow between firmware and cloud • Implement error handling, retries, and device-state management • Build an integration test suite for your team to validate setups • Provide clear technical documentation for internal use Collaboration: I’m comfortable working closely with hardware/testing teams and can coordinate effectively for integration cycles. Available for on-site sessions in Mumbai as needed. Deliverables: ✔ Stable communication layer ✔ Test suite + setup documentation ✔ Support during deployment & hand-off Timeline: Depends on device complexity, but I can start immediately. Let’s discuss your current stack and devices to move forward quickly. Best regards, Arun

@byronw7

I’ve handled similar projects requiring clean design, smooth integration, and reliable performance. Your need for a Mumbai-based developer to build an application layer that enables seamless, two-way communication between in-house boards and IoT modules like BLE, Wi-Fi, and NB-IoT aligns perfectly with my expertise. I understand the importance of clean, well-documented code, integrated APIs, and a user-friendly system that supports your hardware and testing teams with on-site collaboration. While I am new to Freelancer, I have tons of experience and have done other projects off site involving automated, professional system integration and end-to-end validation. I would love to chat more about your project! Regards, Byron Walbrugh

@amDev95

Hi there, While I am new to Freelancer.com, I have tons of off-site projects under my belt and I think I am the perfect fit for your project. I will try to keep this short to not waste your valuable time :) IoT system integration across BLE, Wi-Fi, and NB-IoT - bridging device firmware to cloud dashboards via clean APIs - is squarely in my wheelhouse, and I'm based in Mumbai so on-site sessions are no issue. I can own the full integration layer, write the test suite, and document it thoroughly enough that your technicians can replicate setups independently. I'd love to chat more about your project. Best, Atish.M