Firmware mistakes ship inside physical products and linger for years, because there is no quiet redeploy for hardware in the field. De-risk your project and onboard vetted firmware developers in 2 to 4 weeks.
No matter what you're building, we can help.
We've delivered firmware and embedded software development services across industries. We helped Mitsubishi Electric solve connectivity issues for its smart AC units, we rebuilt the embedded software running 50,000+ beverage machines worldwide.
Every device has a constraint that shapes the whole build: a timing deadline, a few hundred kilobytes of flash, and a talent bottleneck that prevents your in-house team from moving fast. Developing firmware inside those limits is the job, and we respect them from the first line.
Our engineers cover all programming languages commonly used in embedded systems, from bare-metal loops to multitasking builds. We size every feature against the system resources available on your hardware platform, including memory and power.
Every device has a constraint that shapes the whole build: a timing deadline, a few hundred kilobytes of flash, and a talent bottleneck that prevents your in-house team from moving fast. Developing firmware inside those limits is the job, and we respect them from the first line.
Our engineers cover all programming languages commonly used in embedded systems, from bare-metal loops to multitasking builds. We size every feature against the system resources available on your hardware platform, including memory and power.
Field failures are expensive to reproduce and brutal to debug after units ship. We build the suites that test embedded firmware the way your customers will use the product, so you avoid failures nobody can attribute and get test evidence for regulators.
Our engineers build the regression and stress suites, including the hardware-in-the-loop cases that run on test rigs. Catching a defect before release costs a fraction of a recall, and we have the experience and expertise needed to comprehensively test embedded systems.
Embedded hardware is inert until drivers are good to go, and that work sits on the critical path of your hardware development schedule. We take on bring-up so your schedule doesn't slip waiting for your silicon to talk to other hardware components.
Our embedded engineers write device drivers for the peripherals on your schematic, sensors, radios, displays, and storage. Few in-house teams staff experts for these specialized skills, and we've helped many clients address similar skills gaps in the past.
Shipped products often outlive the team that wrote their firmware: the toolchain obsolete, the docs missing, the original authors are elsewhere. We take over existing firmware and make it safe to change.
For inherited codebases, our engineers rebuild the toolchain, put tests around the riskiest paths, and modernize legacy firmware incrementally instead of gambling on a rewrite. You keep shipping on hardware already in the field, without having to hire locally or backfill specialized roles.
Picking between bare metal, a real-time operating system, and embedded Linux sets your latency, boot time, and maintenance load for the product's life. We match the operating layer to what the device has to do.
Our engineers work on FreeRTOS, embedded Linux, Android and AOSP. Our specialists configure schedulers, interrupts, and task priorities to hold under production load. We can also maintain a stack you inherited, or help you modernize it.
Embedded devices fail in the field in ways the lab never sees: flaky networks, brownouts, batteries drained by chatty radios. We build firmware for IoT devices and the conditions hardware actually lives in.
We power-profile each build against its battery budget. We validate RF behavior on low power devices in real-world scenarios, and then we optimize provisioning to keep cloud costs low.
A single exposed device can open the whole fleet to attack, and since we're talking about devices in the field, you often can't reimage them remotely. Firmware operates where an attacker can hold the device, so we treat security as part of the product and harden against the attack vectors physical products face.
We build secure boot chains, incorporate anti-counterfeiting measures, encrypted storage, and review the code paths where security vulnerabilities hide. A stolen or exposed unit on a hostile network doesn't turn into a fleet-wide incident.
The riskiest moment in a device's life is the update, because a failed write in the field can brick hardware you can't reach. We build update paths designed to keep your devices in the field running for years.
You ship fixes and features without treating every release as a gamble. We also take care of vendor-owned update channels and we can help you retrofit and update your legacy fleet.
Dozens of large-scale embedded development projects delivered.
From Mitsubishi Electric's connected climate units to dispensing machines in 50,000+ locations, our embedded software runs in the field on tens of thousands of devices. That track record is why 500+ active clients work with us today.
FOOD & BEVERAGES
A global beverage company runs touchscreen dispensing machines on a proprietary operating system in more than 50,000 units worldwide. The codebase had grown hard to maintain. The rebuild put every machine model on a single codebase with a modular architecture. Our engineers also steadied the UI to hardware connection and added custom logging and real-time monitoring for faster diagnosis. Maintenance got simpler and region-specific features now roll out faster across the fleet.
Java · React · JavaScript
CONSUMER ELECTRONICS
Our client builds computer accessories for productivity and home entertainment. Updates were manual, and devices sat unusable while they ran. We provided 10 senior engineers to consolidate the client's tools into one automated platform. The team automated the update process for 30 different device types, moved updates into the background. This allowed devices to stay usable during upgrades, and brought unified settings, upgrades, and device management to single interface.
C++ · React · JavaScript · GitHub
TECHNOLOGY
Humanoid robots are this client's product, but their engineers built the control software to run on hardware the company doesn't ship itself. Reaching an aircraft tow meant talking to it over CAN bus, so our engineers built that interface and verified the arm motion behind it in ROS2 simulation rather than on the machine. We also improved how the system segments objects in video, which is what lets it track a tool in a human demonstration and repeat the motion.
CONSUMER ELECTRONICS | 1.5-Year Engagement | Staff Augmentation
Mitsubishi Electric is an industrial giant, building everything from elevators to satellites. Their smart AC units suffered intermittent connectivity drops and server crashes that were hard to distinguish from problems in the customer's own network. Our engineers worked both ends of the problem: diagnosing why devices lost their connection, and keeping the platform behind them stable under load.
• Resolved load spikes by scaling the server fleet, cutting CPU load and raising storage IOPS to remove bottlenecks
• Added a diagnostic endpoint that separates external Wi-Fi downtime from true device connection failures
• Shipped new device features, including a dry mode that controls humidity levels
Meet the firmware experts behind our best work.
A proven firmware developer is hard to find, and they get scarcer the tighter your power and memory budgets are. Our engineers work inside those limits every day. Onboard a firmware team in weeks, not months.
Federico S.
Buenos Aires, AR
Manuel C.
Buga, CO
Lucas G.
Rio de Janeiro, BR
Bruno S.
São Paulo, BR
Ricardo A.
Buenos Aires, AR
André P.
São Paulo, BR
Gustavo A.
Marília, BR
Javier V.
Quito, EC
Yuri B.
Blumenau, BR
Diego N.
João Pessoa, BR
Matheus C.
Rio de Janeiro, BR
1,480+
4,000+
96%
500+
Why work with BairesDev? We're trusted by the world's top tech teams.
BairesDev is a US-based company powered by LATAM dev teams. Since 2009, we've built software for companies of all sizes, from scrappy startups to Fortune 500 giants. In fact, we're one of the fastest-growing software development companies in the world. If you're looking for onshore quality with nearshore benefits, we're the partner for you.
Here's what makes us easy to work with and hard to replace:
From code quality to compliance, we've optimized every part of how we work to support high-performing engineering teams. For you, that means clearer communication and smoother delivery, with a partner your team can rely on.
We hire the top 1% of 2.5 million applicants, so you only work with the best.
We give you engineers who've already proven they can deliver. Our rigorous evaluation process includes technical tests, English assessments, soft skill screening, problem-solving simulations, and more. Out of 2.5 million applicants who apply yearly, the top 1% get the chance to join our team. That's how you get highly qualified developers who are experts in their fields.
We hire the top 1% of 2.5 million applicants, so you only work with the best.
We give you engineers who've already proven they can deliver. Our rigorous evaluation process includes technical tests, English assessments, soft skill screening, problem-solving simulations, and more. Out of 2.5 million applicants who apply yearly, the top 1% get the chance to join our team. That's how you get highly qualified developers who are experts in their fields.
We work your team's hours, which creates faster feedback loops and fewer blockers.
Our nearshore software engineers share your workday. Whether we're answering Slack messages, joining daily standups, or presenting a demo to stakeholders, we work alongside your team in real time. Questions get answered quickly. Blockers are resolved as they come up. Simple tasks like reviewing a pull request take 20 minutes, not 24 hours.
Our engineers have strong English skills, so communication and documentation are clear.
We assess English proficiency through verbal interviews and written assignments. Our software engineers can explain decisions, write clear documentation, and actively participate in discussions with your team without barriers. Because we're familiar with US business culture, our devs also know how and when to speak up, how to handle feedback, and what ownership looks like on a team.
With expertise in 100+ technologies, we have every specialist your project requires.
We cover every stage of the software development lifecycle and every major tech stack. The size and breadth of our engineering bench allow us to tackle complex projects for clients of all sizes. This results in fewer handoffs and a smoother development process, speeding up delivery and allowing you to focus the attention of your engineering leadership elsewhere.
Our bench strength lets you scale engineering teams to meet new demands in weeks.
We’re built for scale and efficiency. With 4,000+ vetted engineers and thousands more in our pipeline, we can spin up new teams or scale existing ones on short notice. We move fast without cutting corners, so partners hit aggressive timelines and skip the usual engineering bottlenecks. Once the project is done, clients can downsize accordingly.
We're easy to onboard because we work the way your legal team expects us to.
Because we're based in the US, we follow the same legal standards your team already trusts. We use master service agreements, statements of work, and other documentation that fit your procurement process. You get clear expectations and accountability from the start. So your legal team can easily green-light the engagement with fewer back-and-forths.
We take data and IP seriously, with full protection baked into every engagement.
We treat your assets with the same care you do. Every engagement begins with a mutual NDA and clear IP ownership terms covering everything from code to designs and documentation. Our secure workflows and confidentiality protocols also protect existing codebases and other proprietary data.
Our devs follow security protocols that meet even the strictest enterprise standards. Our software engineers slot into your ecosystem without adding risk. They're trained on secure development practices and only work within the systems and environments they need. Our security protocols include strict access control, audit-friendly workflows, security repository storage, and more. It's how we bring enterprise-grade protection to every engagement, no matter your company size.
We actively track our devs' work to make sure they consistently meet expectations.
With us, you never have to chase updates or second-guess performance. Our delivery managers continually monitor how our software engineers are working to safeguard delivery and quality. They check in regularly, track progress, and even help resolve blockers. It's one more way we streamline projects and accelerate your roadmap.
Need firmware expertise? Plug us in where you need us most.
We customize every engagement to fit your workflow, priorities, and delivery needs. Kick off firmware projects in 2-4 weeks.
Production-ready developers
Get senior, production-ready developers who integrate directly into your internal team.
Your hours, your workflows
They work your hours, join your standups, and follow your workflows, just like any full-time engineer.
ALSO AVAILABLE
Spin up focused, delivery-ready pods to handle full builds or workstreams. Together we align on priorities. Then our tech PMs lead the team and drive delivery to maintain velocity and consistency.
Hand off the full project lifecycle, from planning to deployment. You define the outcomes. We take full ownership of the execution and keep you looped in every step of the way.
Build with firmware engineers who have experience in your industry.
Firmware work changes shape from one industry to the next, and we've delivered in a wide range of them. Yours is probably on this list.
Meet ISO 26262 targets in ECUs and controllers without stalling your vehicle program's timeline.
Build solutions for:
• ECU and domain controller firmware
• Battery management systems for EVs
• ADAS sensor fusion modules
• In-vehicle infotainment platforms
• CAN and automotive Ethernet stacks
• Instrument cluster and HMI software
• Telematics and connected car gateways
• OTA update delivery for vehicle fleets
• Diagnostics and UDS service tools
• Functional safety monitors for critical paths
Meet ISO 26262 targets in ECUs and controllers without stalling your vehicle program's timeline.
Build solutions for:
• ECU and domain controller firmware
• Battery management systems for EVs
• ADAS sensor fusion modules
• In-vehicle infotainment platforms
• CAN and automotive Ethernet stacks
• Instrument cluster and HMI software
• Telematics and connected car gateways
• OTA update delivery for vehicle fleets
• Diagnostics and UDS service tools
• Functional safety monitors for critical paths
Keep therapy and monitoring devices deterministic and inside IEC 62304 expectations.
Build solutions for:
• Patient monitoring device firmware
• Infusion and drug delivery pump controllers
• Wearable therapy and biosensor software
• Diagnostic instrument control systems
• Ventilator and respiratory device logic
• BLE connectivity for companion apps
• Alarm and fail-safe subsystems
• IEC 62304 documentation and traceability packages
• Sterilization and lab equipment interfaces
• Charger and telemetry units for implant-adjacent devices
Run production lines on control firmware that holds timing under electrical noise and around-the-clock duty.
Build solutions for:
• PLC and motion controller firmware
• Machine vision camera systems
• Industrial sensor and actuator drivers
• Modbus and OPC UA stacks
• Robotic cell and conveyor control logic
• Predictive maintenance edge modules
• HMI panel and operator interfaces
• Safety interlock and e-stop subsystems
• Plant data acquisition gateways
• Ruggedized handheld scanner software
Squeeze responsive performance and long battery life out of hardware priced for retail margins.
Build solutions for:
• Wearable and hearable device firmware
• Smart appliance control software
• Camera and imaging pipelines
• Audio DSP and voice assistant integration
• Touchscreen UI on embedded displays
• Battery charging and power management logic
• Companion app connectivity over BLE
• Gaming peripheral and accessory modules
• E-label and low-power display drivers
• Factory test and calibration tools
Certify flight and mission systems where every code path has to trace back to a requirement.
Build solutions for:
• Flight control and avionics software
• UAV and drone autopilot firmware
• Satellite payload and bus controllers
• Ground station and telemetry systems
• Radar and sensor processing modules
• DO-178C verification and documentation support
• Mission computer and display interfaces
• Secure communications and encryption units
• Environmental monitoring subsystems
• Test bench and simulation rigs
Protect grid and metering equipment that stays in service for decades, often where no technician visits.
Build solutions for:
• Smart meter and AMI firmware
• Grid monitoring and protection relays
• Solar inverter and charge controllers
• Battery storage management systems
• Substation automation gateways
• EV charging station software
• Pipeline and remote asset telemetry units
• SCADA field device interfaces
• Demand response and load control modules
• Wind turbine condition monitors
Make devices that recover from bad Wi-Fi and update without user intervention.
Build solutions for:
• Thermostat and HVAC control firmware
• Smart lock and access devices
• Lighting and scene controllers
• Security camera and doorbell systems
• Matter and Thread stacks
• Voice assistant integrations
• Energy monitoring plugs and panels
• Hub and bridge gateways
• Irrigation and pool control modules
• Occupancy and air quality sensors
Ship routers and radio equipment that survive years of remote operation and updates.
Build solutions for:
• Router and gateway firmware
• 5G small cell and radio units
• Fiber ONT and modem software
• Network switch management planes
• SIM and eSIM provisioning modules
• Edge compute appliance systems
• Antenna alignment and monitoring tools
• VoIP and intercom device stacks
• Remote update infrastructure for installed bases
• Environmental telemetry for cell sites
We cover the firmware stack (and everything around it).
Device software runs on a stack of choices: the silicon, the RTOS, the radio, the update path. We work across all of them, so no layer of your product is someone else's problem.
Microcontrollers & SoC Platforms
Our engineers design hardware abstraction layers that let your codebase run on more than one part. Silicon often needs to change mid-project, and we've worked on products using different generations and tiers of Arm Cortex SoCs, preventing our clients from getting locked into legacy hardware that may prove difficult to source.
Arm Cortex, STM32, ESP32, Nordic nRF, NXP i.MX
Connectivity & Protocol Stacks
We've delivered firmware for products that need to reconnect in the field and used a variety of technologies and standards. We cover the whole path from the radio to the backend, including communication protocols, provisioning firmware, and updates once the units are in the wild.
BLE, Wi-Fi, USB, MQTT, ESP-IDF, BlueZ
Debugging & Trace Tooling
Our experience means that we know where the fault lives. Projects spanning hardware devices and firmware often suffer from cross-vendor fault attribution, as multiple points of failure can be owned by different vendors. Our engineers can help you avoid the blame game, pinpoint issues, and resolve them, with or without cross-vendor support.
Keil, GCC, QEMU, GDB, JTAG, SEGGER J-Link
Functional Safety Engineering
We write tests to run on target hardware and produce coverage evidence an assessor will accept. We trace safety requirements into code and back out into test cases. We've delivered a number of MedTech projects, for products that had to comply with strict FDA and EU regulations.
FDA 510(k), IQ/OQ/PQ, EU MDR, HIPAA, LDRA, Polyspace
Digital Signal Processing
We own the capture side, digital and analog, and we process sensor data on the device when latency matters. We've handled mic paths, implemented speech decoders for earbud hardware, and full-duplex audio solutions for various products. We set up per-unit calibration and the reference data to prove the numbers hold while your hardware is still in the factory.
MATLAB, Simulink, SciPy, ALSA, CMSIS-DSP
Secure Boot & Device Identity
Secure element integration and HSM-backed code signing are core work. We also provide provisioning software that injects per-unit certificates and closes debug ports during manufacture. We've provided strong anti-counterfeiting controls for multiple clients.
Arm TrustZone, Mbed TLS, AES-256, TPM, Microchip ATECC608
Firmware Updates and Fleet Reachability
We provide bootloader and update-agent work for devices that are already in the field, including retrofitting update paths to fleets that never had one. We also offer update packaging for vendor-owned channels, where the image has to travel inside someone else's OS update for full reachability.
MCUboot, SWUpdate, Mender, Azure IoT Hub, MQTT, USB mass storage
Embedded Linux and RTOS
Kernel configuration and driver pruning on a Linux image someone else designed. We also handle the AOSP layers above it and the maintenance load of owning that stack. Our RTOS work runs alongside, on FreeRTOS or a commercial kernel of your choosing.
embedded Linux, Linux kernel, Yocto, AOSP, FreeRTOS, Zephyr
Edge AI & TinyML
On-device inference built to strict latency and memory budgets, with the accuracy cost of each quantization step recorded during development. We ship model updates through the same signed OTA path.
TensorFlow Lite, TensorFlow Lite for Microcontrollers, Kaldi, ONNX Runtime, Edge Impulse
Optimization
We optimize for the lowest possible memory footprint, so our clients can avoid overspending on hardware they might not need. For battery-powered devices, power efficiency comes down to current draw in each state, so we measure it and hunt the busy loops, chatty radios, and other drains.
kconfig, Bloaty, Joulescope, Otii by Qoitech, Nordic Power Profiler Kit
How we deliver firmware solutions:
The cheapest place to catch a firmware defect is before it's shipped in tens of thousands of products. Our firmware development process front-loads the architecture and testing decisions that field reliability depends on.
1. Role and Requirements
Intake covers the primary language, the silicon families in play, operating system requirements, and settles where the data goes.
2. Hardware Access and Environment Setup
Boards and debug equipment get sorted before work starts, including who owns hardware design on your side and what ships to our engineers.
1. Role and Requirements
Intake covers the primary language, the silicon families in play, operating system requirements, and settles where the data goes.
2. Hardware Access and Environment Setup
Boards and debug equipment get sorted before work starts, including who owns hardware design on your side and what ships to our engineers.
3. Firmware Architecture Design
Firmware design starts here: tasks, interrupts, state machines, and memory layout mapped against the platform you already run. Module boundaries and update plans are settled before implementation.
4. Toolchain and CI/CD Setup
This is where builds become reproducible: we wire cross-compilation, static analysis, and unit testing into CI, including migration off a licensed IDE when needed.
5. Board Bring-Up and Driver Development
Drivers for the peripherals on your schematic, plus the vendor code nobody in-house can open, and the buses that stopped working on existing hardware.
6. Firmware Implementation
Our engineers build the application logic in small increments, reviewing every PR against MISRA or your in-house standards.
7. Peripheral and System Integration
Integration covers sensors, radios, proprietary hardware, and companion services, with each interface tested against fault cases.
8. Test Automation and Validation
Automated suites cover power cycles, thermal ranges and fault injection on your test hardware. On regulated products, the test evidence and its documentation are first-class deliverables.
9. Security and Provisioning
We implement secure boot, encrypted storage, and signed update verification, along with per-device provisioning and the authentication needed to keep your fleet safe.
10. Optimization
Memory footprint comes first, since it decides the part you can ship on. Current draw in each state follows for battery-powered devices.
11. Handover, Fleet Visibility and Support
We push the repository and sync the task board in a working session. This includes documentation and a written log of what remains.
Over 130 awards and achievements showcase our commitment to quality and client success.
Inc 5000s America's Fastest-growing Companies for 5 years in a row
Recognized for Enterprise Excellence and IT Innovation 2025
Top Software Developers 2026
Entrepreneur of the Year. Bay Area Winner - Nacho De Marco, founder and CEO 2024
Inc 5000s America's Fastest-growing Companies for 5 years in a row
Recognized for Enterprise Excellence and IT Innovation 2025
Top Software Developers 2026
Entrepreneur of the Year. Bay Area Winner - Nacho De Marco, founder and CEO 2024
Inc 5000s America's Fastest-growing Companies for 5 years in a row
Recognized for Enterprise Excellence and IT Innovation 2025
Top Software Developers 2026
Entrepreneur of the Year. Bay Area Winner - Nacho De Marco, founder and CEO 2024
What tech leaders ask about our firmware development services:
The main drivers are hardware complexity, certification scope, and testing depth. Custom firmware for a simple connected sensor is a different project from a safety-certified controller with full OTA infrastructure. Share your board specs and feature list and we'll come back with a scoped estimate.
Boards, debuggers and cables come from your side, and a US receiving hub forwards hardware to the engineers working on it. We supply their machines. Where a task genuinely needs someone at the unit, we say so and scope it out, and our engineers can travel for bring-up weeks or milestone visits.
Two questions sit inside that one. Onboarding runs 2 to 4 weeks from signature. Getting productive on someone else's hardware takes longer, and on a proprietary platform it can be a couple of months before output looks normal. Project duration depends on board bring-up, certification, and field testing more than on coding.
Choosing a firmware development company means checking this first. Low level firmware talks directly to the device's hardware, and writing it is a different hire from an application developer. Our engineers work from bare metal and kernel drivers up through the application layer, and we will tell you plainly when a profile you need sits outside what we staff.
We do it regularly. The first step is making the build reproducible: rebuilding the toolchain, documenting what actually exists, and putting tests around the riskiest paths. From there we modernize incrementally, so you keep shipping on hardware already in the field instead of gambling on a rewrite.
Mostly C and C++, with Rust where memory safety justifies it and Python for tooling and test automation. On the OS side we work from bare metal through real-time operating systems like FreeRTOS and Zephyr up to embedded Linux.
Every build runs through unit and integration suites in CI. For hardware-level coverage, our engineers write the cases your HIL setup executes, then diagnose the failures from the traces and logs it returns.
You do. We work inside your SOPs, protocols, revision control and requirements traceability, and we produce the test evidence and documentation your submission needs. We do not present ourselves as compliance experts, and third-party penetration testing usually sits outside our scope.
We operate from US headquarters under US law, and contracts and billing run through the standard channels your procurement and legal teams already know. No foreign entities, no international payment complications.
Yes, AI-augmented development is a standard practice. We screen for AI proficiency during hiring and constantly invest in upskilling because LLMs are evolving fast. Your environment dictates the tooling. Our engineers work within your VDI, approved toolchain, or whatever AI suite your team runs on. Whether your team uses Claude Code, Cursor, GitHub Copilot, or something else, tool choice follows your standards.
Discuss solutions and decide team structure.
Tell us more about your needs. We'll discuss the best-fit solutions and team structure based on your success metrics, timeline, budget, and required skill sets.
Onboard your team and get to work.
With project specifications finalized, we select your team. We're able to onboard developers and assemble dedicated teams in 2-4 weeks after signature.
We track performance on an ongoing basis.
We continually monitor our teams' work to make sure they're meeting your quantity and quality of work standards at all times.
Accelerate firmware development and delivery with our top-rated nearshore teams.
