Embedded Systems & IoT Firmware Development · Built in C++
Your Hardware Is Ready.
Now It Needs a Brain.
We write the C++ firmware that makes your physical product actually work — reliably, fast, and production-ready. From IoT smart devices to industrial automation to medical equipment. If it has a chip inside, we can program it.
Why Hardware Companies Get Stuck
You Built the Hardware. But Nobody on Your Team Can Write the Firmware.
A hardware startup spends months and lakhs designing the perfect circuit board. The electronics are ready. The prototype looks great. And then reality hits — writing the software that runs inside that chip is a completely different skill. Your electronics engineer cannot do it. Your web or app developer cannot do it. Firmware is a specialty. It requires deep C++ knowledge, understanding of chips at the register level, experience with real-time operating systems, and the discipline to write code that cannot crash — ever — because there is no refresh button on a factory machine or a medical device. That is exactly what we do.
Hardware Startups
Your Product is 90% Done and Completely Stuck
You have the hardware and the launch date. But you cannot find a firmware developer who understands your domain and stays. Every month of delay burns runway and tests investors' patience.
IoT Companies
Your Device Connects to Everything Except Reliably
In the lab it works. In the real world it drops connections, sends wrong data, drains batteries in days instead of years. The problem is not hardware — it is firmware written fast, not written right.
Manufacturing
Your Machines Run. Your Software Does Not.
The control software is twenty years old, the vendor no longer supports it, and your engineers cannot modify it. You need a firmware partner who owns this problem with you long-term.
Medical Devices
You Cannot Ship Until the Software is Certified
Medical devices require software that is documented, tested, traceable, and compliant with IEC 62304 and FDA standards. You need someone who writes medical-grade firmware from day one.
Our Work
We Write the Software That Lives Inside Your Physical Product.
Firmware is not an app or a website. It is code that runs directly on a chip — often with no OS, no screen, no second chances. When it works perfectly, nobody notices. When it fails, everything fails. We have written firmware for chips that run 24/7 in environments from minus 20°C in cold storage to plus 85°C on a factory floor.
- 1
Real-Time Control Systems
Motor controllers, valve controllers, conveyor systems, robotic joint control. Microsecond precision when timing is everything.
- 2
IoT Communication Firmware
WiFi, Bluetooth, 4G, LoRa, Zigbee. Connection drops, retries, data buffering when offline, secure transmission to your cloud. Built for devices in the field for years.
- 3
Sensor Integration and Data Acquisition
Temperature, pressure, vibration, humidity, flow, proximity. Calibration, noise filtering, anomaly detection at the edge.
- 4
Battery-Optimized Firmware
Deep sleep, intelligent wake cycles, radio duty cycling. We have built firmware for IoT sensors that run on two AA batteries for over three years.
- 5
Bootloader and OTA Update Systems
Over-the-air updates, secure boot, rollback protection. Essential for any product with more than a hundred units deployed.
- 6
Edge Intelligence and ML Inference
Lightweight ML on the device. Anomaly detection without cloud. Predictive maintenance at the machine. Works without internet.
Industries We Serve
If It Has a Chip and a Job to Do — We Can Make It Do That Job Perfectly.
IoT Hardware Startups
Smart agriculture, wearables, smart metering, asset tracking, environmental monitoring. We work from day zero: chip choice, firmware architecture, prototype to mass production.
Companies we help: Smart agriculture startups, wearable device companies, smart metering, asset tracking, environmental monitoring
Manufacturing and Industrial Automation
PLCs, robotic controllers, quality inspection, conveyor management, predictive maintenance. Code that handles electrical noise, runs for years without restart, integrates with SCADA and MES.
Companies we help: CNC manufacturers, robotic integrators, conveyor builders, industrial sensor companies
Automotive Electronics
EV battery management, dashboard controllers, ADAS sensor fusion, charging station controllers, telematics. MISRA C++, CAN bus, AUTOSAR. Zero tolerance for errors.
Companies we help: EV startups, Tier 1 suppliers, charging infrastructure, automotive sensor manufacturers
Medical Devices
Diagnostic devices, patient monitoring, drug delivery, rehabilitation devices. IEC 62304 lifecycle, documentation for regulatory submission. India's medical device sector needs firmware developers who work to medical-grade standards.
Companies we help: Diagnostic equipment manufacturers, patient monitoring startups, point-of-care device makers
Defense Adjacent and Aerospace
Surveillance, communication equipment, drone platforms, border security sensors, satellite ground equipment. Code review, formal testing, security hardening, reliability beyond commercial standards.
Companies we help: Drone manufacturers, surveillance systems, communication equipment, aerospace instrumentation
Our Technology and Process
How We Turn Your Hardware Into a Working Product
Every project starts from a deep understanding of your hardware, use case, and constraints — power, memory, processing, connectivity, and safety. C++ is our primary language. For safety-critical we follow MISRA C++. For automotive we apply AUTOSAR.
Chips and Platforms
- ESP32 / ESP8266 → WiFi and Bluetooth IoT
- STM32 → Industrial and medical grade
- ARM Cortex → High performance embedded
- Raspberry Pi → Linux-based edge
- Arduino → Prototyping and low complexity
- NXP i.MX → Automotive and industrial Linux
- TI MSP → Ultra low power battery
- Nordic nRF → BLE wearables
Protocols and OS
- WiFi, Ethernet, BLE, LoRa, CAN, MODBUS, RS485, MQTT, I2C, SPI, UART
- FreeRTOS, Zephyr RTOS, Bare Metal, Embedded Linux
Our Development Process
- Week 1–2: Hardware and requirements study. We ask what happens when power cuts, when two sensors fail, when the network is unavailable for days.
- Week 2–3: Firmware architecture design. Task structure, memory layout, error handling. You approve before code.
- Week 3–7: Development and continuous testing. Unit tests, hardware-in-the-loop. Working demos every week.
- Week 7–8: Stress testing. 72-hour runs, power cycling, dropouts, memory leak analysis.
- Week 9: Deployment, documentation, handover. Source code, test reports, three months post-delivery support.
Why Not Hire a Freelancer or Use an Offshore Team
What Makes Us Different From Every Other Option You Have Tried
| What You Need | Random Freelancer | Offshore Dev Team | Hendoi |
|---|---|---|---|
| Domain knowledge of your industry | Unlikely | Generic | Yes — we specialize by vertical |
| Stays for the full project | No guarantee | High turnover | Dedicated team throughout |
| Understands safety-critical requirements | Rarely | No | Yes — medical and automotive grade |
| Writes documented testable code | Almost never | Rarely | Always — it is our standard |
| Available when production issues occur | Disappeared | Different timezone | Yes — we are your long-term partner |
| Experience with your exact chip | Hit or miss | Hit or miss | We confirm before starting |
| Communicates in plain language | Technical jargon | Language barrier | Clear plain English and Hindi |
| Ownership of outcome | Just delivers files | Just delivers files | We care if the product works |
Deliverables
Everything You Need to Ship a Working Product
- • Production-ready firmware source code — Clean, commented, maintainable. Not a black box.
- • Full technical documentation — Architecture, API reference, hardware interface, configuration, troubleshooting.
- • Test reports and validation evidence — Unit, integration, stress tests. For regulated industries: traceability matrix and verification evidence.
- • OTA update system (where applicable) — Secure updates, version management, rollback.
- • Client SDK (where applicable) — For mobile app or backend integration in Python, Node.js, or your language.
- • Three months post-delivery support — Bug fixes, tuning, guidance. No additional charge.
The Business Case
What Investing in Proper Firmware Actually Returns
- 1
Ship Faster
Most hardware startups lose 3–6 months hiring a firmware engineer or working with a freelancer who underdelivers. A specialist firm from day one gets you to market faster.
- 2
Avoid the Costly Rewrite
Firmware written badly gets rewritten. We have seen companies spend ₹40 lakh on a rewrite that could have been avoided with ₹12 lakh spent correctly the first time.
- 3
Reduce Field Failures
A single product recall can cost more than the entire development budget. Properly tested and hardened firmware dramatically reduces field failure and support costs.
- 4
Your Team Stays Focused
Your electronics engineers design hardware. Your product manager talks to customers. When firmware is handled by specialists, your core team does what they do best.
How We Work Together
Three Ways to Engage Us
Full Project Engagement
Full firmware scope, production-ready end to end. Fixed scope, timeline, price. Best for startups with a clear spec and launch date.
Dedicated Firmware Team
One or two embedded engineers exclusively on your product for 3–12 months. Continuity of in-house with expertise of a specialist firm.
Firmware Audit and Rescue
Existing firmware too slow, unstable, or failing regulatory review? We audit, identify every problem, and fix it. Ship fast, then ship right.
Tech Stack
Frequently asked questions
Firmware is code that runs directly on a chip inside your product—often with no OS, no screen, no keyboard. We write C++ firmware for IoT devices, industrial automation, medical equipment, and automotive systems. Real-time, reliable, production-ready.
ESP32/ESP8266, STM32, ARM Cortex, Raspberry Pi, Arduino, NXP i.MX, TI MSP, Nordic nRF. We use FreeRTOS, Zephyr, bare metal, or embedded Linux depending on your product.
Yes. We follow IEC 62304 for medical devices and MISRA C++ / AUTOSAR for automotive. We deliver the documentation and traceability that regulators and auditors require.
Simple IoT device: 6–8 weeks. Complex industrial or medical system: 10–16 weeks. We give a fixed scope and timeline after a hardware and requirements study. Three months post-delivery support included.
Your Device Deserves Firmware That Matches Its Hardware Quality.
You spent months and significant money designing hardware that works. Do not let it sit on a shelf because you cannot find firmware development you can trust. The first conversation is a free 45-minute technical review. Bring your hardware specification, use case, and timeline. We will tell you honestly what the firmware work involves and whether we are the right fit.
Book Your Free Technical ReviewAlso explore our other services including IoT application development and custom database engines.