RhoSigma is a custom firmware engineering company providing low-level software designed to work closely with your hardware. Whether you need bare-metal firmware for a resource-constrained sensor or a full RTOS stack for an industrial controller, our embedded firmware team provides firmware design and development, from specification to final delivery.
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Every service below is delivered by the same embedded team that designs your hardware — no handoff gaps, no translation loss.
Before firmware development begins, we analyze the interaction of hardware, communication, and application layers so the firmware architecture remains aligned with the project throughout development.
We provide custom firmware design created for your hardware specifications and offer documentation and engineering calculations designed to meet your memory, performance, and power requirements.
We carry out firmware development for bare metal devices with strict timing requirements and Free RTOS and Zephyr builds for multi-task applications while meeting the device's timing and performance requirements.
We port existing firmware to another MCU while preserving the application's functional logic.
We create Board Support Packages (BSPs) and device drivers for the devices and sensors in your product.
We integrate firmware, hardware, and software while incorporating security features such as secure boot from the beginning.
The tools, languages, and platforms our engineers use daily — not a marketing checklist.
Embedded firmware development for automotive, industrial, IoT, medical, defense, energy, consumer, and telecom clients — across India including Mumbai, Thane, Pune, Bangalore, and Delhi NCR.
Firmware for electric vehicle charging stations, battery management systems, and vehicle telematics designed to automotive-grade precision and reliability.
Programmable logic controllers and Modbus / CAN-based firmware development for embedded systems in industrial automation.
Connected firmware with BLE / Wi-Fi / LoRa support and OTA firmware updates designed for low-power consumption.
Firmware for patient monitoring devices and wearables designed with reliability and fail-safes in mind.
Critical mission firmware development for radars and flight control systems under an NDA agreement.
Firmware for smart meters and grid telemetry to ensure years of autonomous field operation.
Firmware designed to maximize cost-effectiveness and user-friendliness.
Firmware for routers, gateways, and protocols within telecommunications hardware.
RhoSigma develops firmware and embedded solutions for organizations operating in automotive, industrial automation, energy, defense, healthcare, and consumer electronics sectors.
Logos shown represent the industries and organization types Rhosigma works with, for illustrative reference only, and do not imply an existing client, partnership, or endorsement.
A repeatable, documented process used on every engagement — so you always know where the project stands.
Hardware constraints, performance objectives, and communication requirements are defined before embedded firmware engineering begins.
We already know that the firmware development process starts with appropriate silicon platform as we make the final decisions in regard to the type of microcontroller as well as memory structure and peripherals specification.
Firmware, including RTOS configuration, device drivers, and application logic, is developed, unit tested, and validated against the defined requirements.
You receive production-ready firmware, complete documentation, and ongoing support throughout the development lifecycle because we work as a long-term engineering partner rather than a one-time contractor.
Answer 7 quick questions — we'll turn it into a spec and you can send it straight to our engineering team on WhatsApp.
Expand any service to see what Rhosigma delivers — not a brochure description, but the actual engineering work involved.
A solid firmware architecture prevents months of rework. We design the entire embedded system blueprint before development starts — defining component relationships, timing diagrams, and interface contracts that every developer works from.
Our firmware engineers build from your architecture spec — writing modular, well-commented code that your in-house team can maintain after handover. We do not use generic code templates.
Choosing the wrong execution environment is one of the most expensive early mistakes in embedded development. We select and configure the right platform based on your real-time deadlines, memory budget, and certification requirements.
Component obsolescence and platform upgrades are inevitable. We migrate your existing firmware to new architectures without rewriting business logic — protecting your IP investment.
A BSP is the glue between your hardware and your application. Ours are written to be clean, tested, and portable — so they do not break when you spin a new board revision.
Integration is where siloed firmware, hardware, and cloud software must finally talk to each other. We own the integration phase end-to-end, with security baked in at the protocol level.
Most firmware shops write code. We design embedded systems — firmware, hardware, and manufacturing as one package, from Thane, Maharashtra.
Developing hardware and firmware solutions in one location eliminates any gaps in communication.
Our team of engineers is well-versed in RTOS systems, communication protocols, and the low-level firmware creation process.
Effective systems allow us to expedite the firmware development process.
Our firmware is created with respect to the client's application and equipment employed rather than by replication.
Our firmware is checked in realistic conditions, not just in a laboratory.
Security and maintainability have been taken into consideration from the very first stages of firmware development.
Our customers own all the code and authorized developments we create for them.
Our services do not stop after the product is released; we are available for maintenance and updates after the launch.
Choose the working model that fits your team, budget, and timeline.
A clearly scoped PCB project with a fixed price and timeline — ideal when requirements are well-defined upfront.
A PCB design team assigned exclusively to your product for the duration of the engagement.
Extend your in-house design team with our PCB engineers, on your tools and timelines.
A continuous collaboration for ongoing product development, not a one-off delivery.
A look at the categories of PCB design projects our team has delivered.
A DDR/USB-heavy multilayer board with controlled-impedance routing for a compute-intensive product.
A compact rigid-flex assembly designed for a body-worn health-monitoring device.
An 8-layer controller board balancing power delivery and I/O density in a compact enclosure.
A mixed-signal board with careful analog isolation for a wireless sensing application.
A PCB layout is only as good as its ability to be fabricated and assembled reliably. We stay involved through the transition to manufacturing — the point where most layouts run into unplanned delays.
Layout reviewed against fabrication and assembly constraints before release.
Fabrication and assembly partners matched to your layer count and volume.
Cost-effective components sourced with alternates to reduce single-source risk.
Direct oversight through first production runs and assembly ramp-up.
Every production batch checked against the original layout and test spec.
Firmware development refers to the procedures of developing low-level software that operates on microcontrollers. It should be noted that firmware in much closer proximity to silicon than software or any application is considered to be a valuable instrument that guarantees a constant operation of hardware. Thus, firmware acts as a link between hardware and software. Firmware programming does not have an operating system tool that ensures operation, which means that firmware programming should be both precise and efficient.
Questions we hear on every scoping call — answered directly, without the brochure language.
Embedded firmware is low-level software that orchestrates every pin, every peripheral, and every timing decision on your board. A specialist embedded firmware developer comes with protocol-level know-how and proven, documented debugging methodology that saves you from producing at an industrial scale only to discover failures once the product is deployed.
We develop firmware for the following MCUs and more: STM32, ESP32, Atmel / Microchip AVR, NXP LPC / iMX, Nordic nRF, Texas Instruments. If your MCU is not on the list, simply contact us, and we quickly vet new silicon and its software development ecosystem.
Bare-metal firmware development for an MCU works well for a simple, single deterministic job. RTOS is a good choice when multiple concurrent activities or a networking stack is present. We recommend an approach at the architecture phase, with the trade-offs documented in detail.
A minimal bare metal firmware (BSP) for a known MCU can take 4-8 weeks. A feature-rich solution for a product integrating hardware with RTOS, various device drivers, an IoT connectivity protocol and over-the-air firmware update capabilities may range from 3 to 6 months. We agree on a mile stone based schedule during your initial technical discovery.
Absolutely-we specialize in embedded firmware porting. We maintain your existing application’s functional integrity, entirely rewriting or adaptively porting only the hardware abstraction layer and platform code to function correctly with your new MCU hardware.
Based in Thane, Maharashtra, Rhosigma serves clients across India as well as globally. Our embedded firmware engineering work is largely done remotely with regular reviews conducted via calls/video, and visits to client premises are planned based on hardware Bring-up requirements.
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Where innovation meets excellence in the world of electronic technology. Established with a passion for advancing the boundaries of what's possible.
info@rhosigma.in
602-B, Virani Business Center, Opp Bharat Gears Limited, Kausa Mumbra, Thane 400612.