Firmware sits at the point where an electronic product's hardware design becomes reliable, usable behavior. Device teams increasingly need secure updates, wireless connectivity, real-time control, and careful validation on physical boards, not just successful software builds. A development partnership may therefore involve board bring-up, bootloaders, drivers, testing infrastructure, and the companion cloud or mobile applications that make the device useful. The right scope depends on whether the immediate challenge lies inside the controller, across the device-to-cloud system, or both.
1. Itexus
Itexus builds software for financial products where dependable integrations, secure data handling, and long-term maintenance are central requirements. Its portfolio covers mobile banking, digital wallets, trading systems, and payment infrastructure. One published project combined electronic point-of-sale kiosk software, a mobile wallet, web applications, and a cloud API server within a single financial ecosystem.
For device-related financial projects, that experience is relevant to the applications, transaction services, and backend systems surrounding connected payment hardware. The company also handles discovery, architecture, quality assurance, and production support, giving teams an established route from a product concept to maintained customer-facing software.
Key Facts
- Best for: Financial products that connect physical endpoints with mobile apps and secure transaction platforms
- Core services: Firmware development, fintech software development, API integration, mobile and web applications, quality assurance
- Notable projects: ePOS kiosk software and digital wallet ecosystem
- Headquarters: Dover, DE, USA
- Founded: 2013
- Team size: 150+ engineers
Contact Information
- Website: itexus.com
- Email: moc.suxeti@ofni
- Facebook: www.facebook.com/itexus
- Twitter: x.com/ItexusSoft
- LinkedIn: www.linkedin.com/company/itexus
- Instagram: www.instagram.com/itexus.soft
- Address: 8, The Green, STE road, Dover, DE 19901, United States
2. Witekio
Witekio is an embedded software firm that works on the code running closest to the hardware. Its services cover firmware, board support packages, embedded Linux and Android, Yocto and Zephyr RTOS, plus long-term maintenance with CVE scanning, security risk assessment and Cyber Resilience Act guidance. It also designs Qt/QML device applications.
The company works with products such as Mender for over-the-air updates and Canonical Ubuntu Pro, and serves medical, industrial machinery, off-highway vehicle, energy and home appliance makers. It suits manufacturers that need firmware built and then kept patched for years.
Key Facts
- Best for: Device makers needing firmware plus long-term security maintenance
- Core services: Firmware, BSPs, embedded Linux, Zephyr, OTA updates, CVE monitoring
- Specialization: Embedded OS, firmware and lifecycle security
- Parent company: Avnet
- Founded: 2001
- Team size: 51–200 employees
Contact Information
- Website: witekio.com
- Phone: +1 425-749-4335
- Address: 3150 Richards Rd #210, Bellevue, WA 98005, USA
- LinkedIn: www.linkedin.com/company/witekio/
3. Sirin Software
Sirin Software develops embedded software and firmware for connected hardware, with a strong focus on IoT and telecom devices. Its services cover firmware development, embedded software, IoT device design, and the cloud and application layers that connected products often need, run from a Florida base with an R&D center in Ukraine.
Published case studies include a firmware upgrade for an ultra-wideband connection provider, a firmware update for an industrial wearable device, and a remote antenna tilting protocol implementation. It suits companies building wireless or industrial devices that want firmware work and the surrounding cloud software handled by one team.
Key Facts
- Best for: IoT and telecom device makers updating firmware
- Core services: Firmware development, embedded software, IoT device design, cloud
- Specialization: Firmware for wireless, telecom and industrial IoT devices
- Founded: 2014
- Team size: 11–50 employees
Contact Information
- Website: sirinsoftware.com
- Phone: +1 919 291 2216
- LinkedIn: www.linkedin.com/company/sirinsoftware
4. Integra Sources
Integra Sources is an electronics and embedded software company that designs hardware and writes the firmware for it. Its services include firmware, board support packages, RTOS work, device drivers and Linux kernel modules, and SoC-based electronics on ARM Cortex-A processors with FPGA and PCB design, prototyping and certification preparation.
Published projects include adapting the U-Boot bootloader to run a custom operating system on a Rock Pi 4B+, a continuous glucose monitoring system with a skin-attached sensor that sends data to a smartphone, and a plant-care monitoring system with its own gateway. It suits teams that need board design and low-level code from one vendor.
Key Facts
- Best for: Products needing both electronics design and firmware
- Core services: Firmware, BSPs, drivers, kernel modules, PCB and FPGA design
- Specialization: Low-level software for ARM SoC-based hardware
- Headquarters: Astana, Kazakhstan
- Founded: 2014
Contact Information
- Website: integrasources.com
- LinkedIn: www.linkedin.com/company/integra-sources
5. Softeq
Softeq works at the boundary between electronic hardware and the software that makes it function. Its firmware development practice includes low-level programming, board support packages, device drivers, operating-system adaptation, and embedded applications. The company also develops connected products, giving manufacturers access to skills beyond the firmware image itself.
That combination is useful for teams taking a new board through bring-up, peripheral integration, and product-level testing. Softeq's work spans consumer devices, industrial systems, and IoT products, with engineering that can extend into companion applications and cloud services when connectivity is part of the design.
Key Facts
- Best for: Hardware manufacturers needing low-level code and a wider device software stack
- Core services: Firmware development, embedded Linux, BSPs, drivers, IoT engineering
- Specialization: Hardware and embedded software integration
- Headquarters: Houston, TX, USA
- Founded: 1997
- Team size: 201–500 employees
Contact Information
- Website: www.softeq.com
- Facebook: www.facebook.com/softeq
- Twitter: x.com/Softeq
- LinkedIn: www.linkedin.com/company/softeq
- Instagram: www.instagram.com/softeq
- Address: 1155 Dairy Ashford Rd., Suite 125 Houston, Texas 77079 USA
- Phone: +1 888 552-5001
6. DornerWorks
DornerWorks develops embedded systems for products where reliability, security, and predictable behavior matter. Its engineers work with real-time operating systems, embedded Linux, firmware, device drivers, and hardware-oriented software. The company also supports specialized system architectures used in aerospace, defense, medical technology, and industrial products.
Projects that demand detailed technical controls can benefit from an engineering partner comfortable with both the application and platform layers. DornerWorks also works on hardware design and verification, making it relevant when the firmware schedule depends on board design decisions, integration testing, or a safety-focused development process.
Key Facts
- Best for: Embedded platforms with demanding reliability or security requirements
- Core services: Firmware, embedded Linux, RTOS integration, device drivers, hardware design
- Industries: Aerospace, defense, medical devices, industrial technology
- Headquarters: Grand Rapids, MI, USA
- Founded: 2000
- Team size: 51–200 employees
Contact Information
- Website: www.dornerworks.com
- Email: moc.skrowrenrod@selas
- LinkedIn: www.linkedin.com/company/dornerworks
- Address: 3445 Lake Eastbrook Blvd SE, Grand Rapids, MI 49546
- Phone: +1 616 245 8369
7. ByteSnap Design
ByteSnap Design combines electronic engineering with embedded software development. Its services include firmware, embedded Linux, custom PCB design, FPGA development, prototyping, and production testing. Working on both sides of the hardware-software interface is especially useful during the earliest stages of a device project.
The company serves markets such as industrial manufacturing, healthcare, transport, and IoT. It also offers redesign and component-obsolescence support, which matters for products expected to remain in service after their original chips or modules become difficult to source. Buyers can engage it for both functional prototypes and the engineering needed to prepare a design for production.
Key Facts
- Best for: Products requiring electronics design and firmware under one engineering team
- Core services: Embedded firmware, PCB design, embedded Linux, FPGA engineering, prototyping
- Industries: Industrial, medical, transport, IoT
- Headquarters: Birmingham, UK
- Founded: 2008
- Team size: 11–50 employees
Contact Information
- Website: www.bytesnap.com
- Email: ku.oc.pansetyb@ofni
- Facebook: www.facebook.com/ByteSnap
- Twitter: x.com/ByteSnap
- LinkedIn: www.linkedin.com/company/bytesnap-design-ltd
- Address: Park Point, 17 High Street, Longbridge, Birmingham, B31 2UQ, United Kingdom
- Phone: +44 (0)121 295 5400
8. A-listware
A-listware combines software development with engineering team extension. Its published technical coverage includes embedded software and IoT alongside enterprise applications, cloud platforms, and quality assurance. The company also works with C/C++, making its development pool relevant to teams operating close to hardware as well as those managing supporting applications.
The staffing model is useful when a product organization needs additional engineers without transferring all project ownership to an outside vendor. A-listware can also contribute testing, security, and infrastructure skills around an embedded program. That broader engineering coverage makes sense for connected systems with several workstreams progressing in parallel.
Key Facts
- Best for: Extending embedded and IoT engineering teams
- Core services: Embedded software and IoT, software development, staff augmentation, QA
- Specialization: Extended engineering teams
- Technologies: C/C++ and wider application development stacks
- Headquarters: London, UK
Contact Information
- Website: a-listware.com
- Email: moc.erawtsil-a@ofni
- Facebook: www.facebook.com/alistware
- LinkedIn: www.linkedin.com/company/a-listware
- Address: St. Leonards-On-Sea, TN37 7TA, UK
- Phone: +44 (0)142 439 01 40
9. Lemberg Solutions
Lemberg Solutions provides firmware engineering as part of a broader digital product development practice. Its capabilities cover microcontrollers, real-time software, hardware integration, and firmware testing. It also builds connected product components that link electronic devices with user interfaces and backend services.
Published development work includes ARM-based systems and firmware for smart devices. This makes Lemberg Solutions relevant for companies taking an IoT concept from an engineering sample toward an integrated, commercially usable product. Having firmware and application disciplines available together can reduce coordination gaps between device behavior, connectivity, and the experience delivered to end users.
Key Facts
- Best for: IoT devices requiring coordinated firmware and product software
- Core services: Firmware development, embedded systems, hardware engineering, IoT solutions
- Specialization: Microcontroller software and device-to-cloud integration
- Headquarters: Lviv, Ukraine
- Founded: 2007
- Team size: 51–200 employees
Contact Information
- Website: lembergsolutions.com
- Email: moc.snoitulosgrebmel@ofni
- Facebook: www.facebook.com/LembergSolutions
- Twitter: x.com/WeAreLemberg
- LinkedIn: www.linkedin.com/company/lemberg-solutions-limited
- Instagram: www.instagram.com/lembergsolutions
- Address: Am Sandtorkai 32, Hamburg, Germany
- Phone: +49 403 346 62 17
10. Developex
Developex builds software for connected electronics, from device firmware to mobile apps and cloud infrastructure. Its embedded practice covers bare-metal code, RTOS-based applications, bootloaders, and firmware updates, while adjacent teams work on the services and interfaces around a finished product.
The company has experience in consumer electronics, audio, gaming peripherals, and IoT. That range is relevant when a product needs coordinated engineering across MCU code, wireless connectivity, application interfaces, and over-the-air maintenance. Developex can take responsibility for a complete device software stack or work on a defined part of an existing development program.
Key Facts
- Best for: Connected consumer electronics and cross-layer device software
- Core services: Firmware, RTOS, embedded software, mobile apps, cloud and OTA systems
- Industries: Consumer electronics, gaming accessories, audio, IoT
- Founded: 2001
- Team size: 201–500 employees
Contact Information
- Website: developex.com
- Email: moc.xepoleved@tcatnoc
- Facebook: www.facebook.com/Developex
- Twitter: x.com/Developexcom
- LinkedIn: www.linkedin.com/company/developex
- Instagram: www.instagram.com/developexcom
- Address: 1771 Robson Str. Unit 1524, Vancouver, BC V6G 1C9
- Phone: +1 604 757 9834
11. OSKI Solutions
OSKI Solutions delivers custom software projects and engineering capacity for businesses building or improving digital products. Its services span web and mobile application development, cloud infrastructure, DevOps, and quality assurance. The team works with both new systems and established software that needs ongoing enhancement.
In a device-focused project, OSKI's relevant strengths are the application and infrastructure components that connect hardware to people and business processes. Examples include operator portals, mobile control interfaces, and cloud-hosted services built around device-generated information. Its engineering and support capabilities also suit products whose companion applications need frequent releases after the underlying hardware has shipped.
Key Facts
- Best for: Companion applications and cloud services in connected-product ecosystems
- Core services: Custom software, web and mobile development, DevOps, cloud, QA
- Specialization: Product engineering and extended software teams
- Headquarters: Tallinn, Estonia
- Team size: 51–200 employees
Contact Information
- Website: oski.site
- Email: etis.ikso@tcatnoc
- LinkedIn: www.linkedin.com/company/oski-solutions
12. Promwad
Promwad designs electronic products and writes the embedded code that runs them. Its engineering services span firmware, embedded Linux, FPGA design, custom electronics, board development, and assistance with production launch. The company's firmware practice covers microcontrollers, peripheral interfaces, and communication functions used in connected hardware.
Promwad works with industrial, telecom, and consumer electronic devices, including products with demanding connectivity requirements. Keeping electrical design and low-level software expertise in one organization is practical when signal paths, component selection, timing, and firmware behavior must be resolved together. Its engineering scope also extends to prototypes and product manufacturing preparation.
Key Facts
- Best for: Hardware-centric projects combining embedded code and electronics
- Core services: Firmware, embedded Linux, FPGA, PCB design, product prototyping
- Industries: Telecom, industrial equipment, consumer electronics
- Headquarters: Essen, Germany
- Founded: 2004
Contact Information
- Website: promwad.com
- Email: moc.dawmorp@ofni
- Facebook: www.facebook.com/promwad.electronics
- LinkedIn: www.linkedin.com/company/promwad
- Address: Walbecker Str. 2a, 47608 Geldern
- Phone: +49 201 487 90 148
13. SaM Solutions
SaM Solutions offers custom firmware engineering across microcontrollers, embedded Linux, Android, and real-time operating systems. Its services include board support packages, device drivers, bootloaders, firmware porting, testing, and optimization. These capabilities support both new hardware and established products moving to a different chipset or system architecture.
A published IoT project involved firmware, cloud connectivity, and mobile applications for a connected consumer device. That illustrates the company's ability to work across the full device-to-service chain. Its experience with power management and wireless interfaces is also relevant to battery-powered equipment and systems that need dependable communications.
Key Facts
- Best for: Custom firmware, replatforming, and IoT product engineering
- Core services: Firmware development, BSPs, drivers, embedded Linux, testing
- Specialization: Device-to-cloud IoT systems
- Technologies: C/C++, Yocto, Buildroot, FreeRTOS
- Headquarters: Gilching, Germany
- Founded: 1993
- Team size: 501–1,000 employees
Contact Information
- Website: sam-solutions.com
- Email: moc.snoitulos-mas@ofni
- Facebook: www.facebook.com/SaMSolutionsCOM
- Twitter: x.com/SaMSolutionsCom
- LinkedIn: www.linkedin.com/company/sam-solutions
- Address: 83 Morse Street, Building 6. Norwood, MA 02062
- Phone: +1-857-777-6073
14. Cardinal Peak
Cardinal Peak develops embedded software alongside electronics and product engineering. Its work covers board-level firmware, low-level drivers, real-time systems, and the communications software used in connected devices. The company works with processors, system-on-chip platforms, DSPs, and FPGAs across a range of device categories.
Its projects include IoT, audio and video, access-control, and other embedded products. Cardinal Peak also links development work to design-for-manufacturing considerations, helping teams account for board architecture and production constraints before release. It suits projects where firmware cannot be separated cleanly from the physical product's architecture.
Key Facts
- Best for: Firmware tied closely to hardware and product-design decisions
- Core services: Embedded software, low-level drivers, hardware design, connectivity
- Industries: IoT, audio/video, access control, consumer electronics
- Headquarters: Lafayette, CO, USA
- Founded: 2002
- Team size: 51–200 employees
Contact Information
- Website: cardinalpeak.com
- Email: moc.kaeplanidrac@ofni
- Facebook: www.facebook.com/CardinalPeak
- Twitter: x.com/CardinalPeak
- LinkedIn: www.linkedin.com/company/cardinalpeak
- Address: 1380 Forest Park Circle, Suite 202, Lafayette, CO 80026
- Phone: (303) 665-3962
15. DMC
DMC develops firmware for industrial and embedded electronics, with services that include real-time operating systems, bootloaders, low-level drivers, communication protocols, and embedded C/C++ programming. It also provides hardware and automation engineering, allowing firmware work to connect with the machinery or controls that use it.
The company's published projects include custom firmware for variable-frequency drives and tools for programming embedded devices. Its technical coverage includes interfaces such as SPI, UART, CAN, and Modbus, together with structured testing and code review. DMC is a practical fit for industrial products that need deterministic control behavior and detailed system integration.
Key Facts
- Best for: Industrial control products and embedded firmware modernization
- Core services: Firmware development, embedded programming, RTOS, device drivers, test automation
- Technologies: C/C++, Zephyr, FreeRTOS, CAN, Modbus
- Industries: Industrial automation, manufacturing, embedded controls
- Headquarters: Chicago, IL, USA
- Founded: 1996
- Team size: 201–500 employees
Contact Information
- Website: www.dmcinfo.com
- Email: moc.ofnicmd@liame.selas
- Facebook: www.facebook.com/pages/DMC-Inc/107982009242929
- LinkedIn: www.linkedin.com/company/dmc-engineering
- Instagram: www.instagram.com/dmcengineering
- Address: 3800 Maple Ave, Suite 500, Dallas, TX 75219
- Phone: 1-903-321-4076
Comparison Table
| Company | Best for | Headquarters | Founded | Team size |
| Itexus | Financial products that connect physical endpoints with mobile apps and secure transaction platforms | Dover, DE, USA | 2013 | 150+ engineers |
| Witekio | Device makers needing firmware plus long-term security maintenance | — | 2001 | 51–200 employees |
| Sirin Software | IoT and telecom device makers updating firmware | — | 2014 | 11–50 employees |
| Integra Sources | Products needing both electronics design and firmware | Astana, Kazakhstan | 2014 | — |
| Softeq | Hardware manufacturers needing low-level code and a wider device software stack | Houston, TX, USA | 1997 | 201–500 employees |
| DornerWorks | Embedded platforms with demanding reliability or security requirements | Grand Rapids, MI, USA | 2000 | 51–200 employees |
| ByteSnap Design | Products requiring electronics design and firmware under one engineering team | Birmingham, UK | 2008 | 11–50 employees |
| A-listware | Extending embedded and IoT engineering teams | London, UK | — | — |
| Lemberg Solutions | IoT devices requiring coordinated firmware and product software | Lviv, Ukraine | 2007 | 51–200 employees |
| Developex | Connected consumer electronics and cross-layer device software | — | 2001 | 201–500 employees |
| OSKI Solutions | Companion applications and cloud services in connected-product ecosystems | Tallinn, Estonia | — | 51–200 employees |
| Promwad | Hardware-centric projects combining embedded code and electronics | Essen, Germany | 2004 | — |
| SaM Solutions | Custom firmware, replatforming, and IoT product engineering | Gilching, Germany | 1993 | 501–1,000 employees |
| Cardinal Peak | Firmware tied closely to hardware and product-design decisions | Lafayette, CO, USA | 2002 | 51–200 employees |
| DMC | Industrial control products and embedded firmware modernization | Chicago, IL, USA | 1996 | 201–500 employees |
How to Choose a Firmware Development Partner
Choosing a firmware development partner means trusting another team with the code that makes your hardware work in the field. The right partner knows your microcontroller family and connectivity stack, tests on real boards, and plans for secure updates and fault recovery long after the first units ship.
Experience with your hardware platform. Ask which microcontrollers, SoCs and RTOS or embedded Linux distributions the team has shipped products on, such as STM32, Nordic nRF, ESP32, NXP, Zephyr or FreeRTOS. Request examples of board bring-up and driver work on similar chips. Experience on your exact platform shortens schedules, because vendor SDK quirks and silicon errata take time to learn.
Hardware-in-the-loop testing. Firmware that passes builds can still fail on a real board. Ask how the partner tests on physical hardware, whether they use automated hardware-in-the-loop rigs, and how they cover power loss, brown-outs, radio interference and temperature extremes. Check their unit test coverage and static analysis tools. Testing described only as 'QA before release' is a red flag.
Secure boot and OTA updates. Connected devices need a plan for updates and security from day one. Ask how the partner implements secure boot, signed firmware images, encrypted updates and rollback if an update fails. Confirm they have shipped OTA updates to devices already in the field. Regulations such as the EU Cyber Resilience Act make update and vulnerability handling a legal requirement for many products.
Power and performance discipline. For battery-powered devices, power consumption decides product viability. Ask how the team measures current draw, uses sleep modes and profiles code on target hardware. For real-time control, ask how they verify timing deadlines and interrupt latency. A partner should show measurements from past projects, not just promise optimization at the end.
Certification and compliance experience. Depending on your market, firmware may need to support certifications such as FCC and CE radio testing, Bluetooth SIG qualification, IEC 62304 for medical devices, ISO 26262 for automotive or IEC 61508 for industrial safety. Ask which certifications their past products passed and what documentation and traceability they provide. Late certification surprises are a common cause of launch delays.
Full-stack device scope. Many products also need a companion mobile app, cloud backend and device management. Decide whether one partner should own the whole stack or only firmware, and ask how they define interfaces between device, app and cloud. Clarify ownership of source code, toolchains and build environments, so your team or another vendor can maintain the firmware later.
Conclusion
Firmware development is increasingly inseparable from cybersecurity, device lifecycle management, and the applications that let people operate connected products. A sound engagement begins with a clear division of responsibility for hardware interfaces, bootloaders, device logic, communications, and field updates. Teams should pay particular attention to how firmware is tested on real hardware, how faults are recovered, and how new releases are delivered to devices already in use. When electronics, embedded code, and cloud services are developed by different groups, interface contracts and shared release planning become essential. The strongest long-term results usually come from design decisions that preserve maintainability after the first production run.
Frequently Asked Questions
How much does firmware development cost?
Firmware projects typically range from tens of thousands of dollars for a simple device or porting job to several hundred thousand for complex connected or safety-critical products. Costs depend on hardware complexity, connectivity protocols, real-time and power requirements, security features, certification needs and how much testing infrastructure must be built. Hardware revisions during development also add cost.
How long does it take to develop firmware for a new device?
A simple device can reach production-ready firmware in a few months, while connected or regulated products often take six to eighteen months. Timelines depend on hardware availability and revisions, board bring-up issues, wireless stack integration, certification testing and field trials. Starting firmware work alongside hardware design, using development kits, shortens the overall schedule.
Should we outsource firmware development or hire an in-house team?
Outsourcing works well when you need specialized skills quickly, such as a particular wireless stack, security or certification experience, or when firmware work is project-based. An in-house team makes sense when firmware is core to your product and needs continuous development. Many companies combine both, with an internal lead owning architecture and an external partner adding capacity.
What should we give a firmware partner to get an accurate estimate?
Provide schematics or a block diagram, the chosen or candidate microcontroller, a list of sensors, peripherals and communication interfaces, power and battery targets, and the update and security requirements. Note any certifications the product must pass and target production volumes. If hardware is not finalized, say so, since board revisions affect firmware scope and schedule.
Who owns the firmware code when working with a development partner?
Ownership is set by your contract, so make sure it assigns all intellectual property in the firmware, build scripts and tools to your company on payment. Ask for regular access to the source repository rather than delivery only at the end. Also check for third-party libraries and licenses, such as GPL components, that may affect how you can distribute the device.