In 2025, firmware will do more than power devices—it will define how they perform, connect, and adapt in real time. From connected medical tools to smart industrial equipment, the firmware layer will drive everything users don’t see but always rely on. The demand for sharp, reliable code that fits tightly with hardware has never been higher.
Choosing among the best firmware development companies means getting more than code delivery. It means working with a team that understands timing, memory constraints, and device longevity without slowing your roadmap. The 10 firms we’ve listed below stand out for consistently building firmware that’s lean, scalable, and ready for real-world use—no fluff, just results.
List of Top Firmware Development Companies
1. Conclusive Engineering
Company size: 11–50
Headquarters: Katowice, Poland
Conclusive Engineering is an embedded software and firmware development company specializing in highly customized solutions for complex environments.
Its client portfolio spans both early-stage technology ventures and established Fortune 500 companies. The company maintains long-term collaborations with leading silicon manufacturers, allowing its engineers to tailor firmware tightly to hardware specifications across a broad set of CPU architectures, including ARM, RISC-V, and x86.
The firm uses a modular development strategy to build firmware with upgrade paths already embedded in the architecture. This method ensures that updates and extensions can be implemented without requiring full rewrites or risking system stability.
Compliance with functional safety standards such as ISO 26262 and IEC 61508 is standard procedure for projects involving automotive, industrial, and medical devices. Conclusive Engineering is particularly effective in low-level debugging, real-time optimization, and RTOS integration for systems that demand high availability.
Key features:
- Collaborates with Fortune 500 companies and silicon leaders
- Modular architecture built for scalable upgrades
- Adheres to ISO 26262 and IEC 61508 safety protocols
Services:
- Firmware development for RTOS environments
- FPGA and microcontroller firmware solutions
- Secure boot and embedded cryptography
- Performance profiling and debugging at hardware level
- Firmware cloud and IoT stack integration
2. SaM Solutions
Company size: 501–1K
Headquarters: Gilching, Germany
SaM Solutions provides firmware engineering services focusing on embedded Linux, system-level software, and device-level optimization. With decades of experience in software engineering and international operations in both Europe and North America, the company supports firmware programs for industrial systems, healthcare devices, and networked infrastructure.
A core area of strength lies in the development of board support packages (BSPs), kernel modifications, and the integration of secure network stacks. As one of the best firmware development services, the company also offers legacy firmware migration for clients updating aging platforms without a full hardware redesign. Firmware delivery is organized into agile sprints, allowing clients to test on hardware early in the development lifecycle.
Key features:
- High proficiency in BSPs and embedded Linux stacks
- Supports legacy-to-modern firmware migration
- Agile firmware engineering pipeline
Services:
- Custom firmware and middleware development
- Network protocol stack implementation
- Power consumption profiling and reduction
- Device driver development and maintenance
- QA testing and cross-platform deployment
3. PROLIM
Company size: 501–1K
Headquarters: Plano, Texas, USA
Founded in 2005, PROLIM provides firmware development within a broader service model focused on product lifecycle management. The company works across regulated industries such as aerospace, automotive, and industrial manufacturing, with clients using its firmware services in embedded control systems, automation modules, and device telemetry components.
PROLIM’s firmware development integrates with its PLM Center of Excellence, supporting end-to-end visibility into system behavior, updates, and compliance checks. This model offers medium-sized companies the ability to scale embedded features while maintaining lifecycle oversight.
Their firmware teams develop custom logic that directly interfaces with sensors, actuators, and communication modules while ensuring compatibility with hardware constraints.
Key features:
- Lifecycle-integrated firmware design
- Hardware-aware development targeting resource-constrained devices
- Frequent deployments in regulated sectors
Services:
- Custom embedded firmware design
- RTOS and bare-metal firmware programming
- Lifecycle testing and system diagnostics
- Embedded system integration with PLM support
- Automotive- and aerospace-grade embedded compliance solutions
4. Indeema
Company size: 51–200
Headquarters: Seattle, Washington, USA
Indeema is a technology engineering company that provides embedded firmware and full-stack IoT system development. The firm is recognized for its combined software-hardware engineering capabilities, which allow it to deliver ready-to-deploy systems across sectors such as industrial automation, energy management, and infrastructure monitoring.
The company’s firmware solutions focus on low-power design, edge analytics, and OTA update reliability. Indeema’s firmware team develops secure bootloaders, custom hardware abstraction layers, and data transport interfaces that support both wired and wireless communication protocols. Its work is typically paired with mobile or cloud interfaces for remote device interaction and system diagnostics.
Key features:
- Full-cycle hardware and firmware design capability
- OTA and secure provisioning built into all firmware layers
- Field-tested for industrial-grade durability
Services:
- Embedded software development for IoT devices
- Hardware prototyping and design validation
- Secure communication protocols and firmware encryption
- Remote firmware diagnostics and logging systems
- Firmware consulting for vertical IoT stacks
5. Jaycon
Company size: 51–200
Headquarters: Orlando, Florida, USA
Jaycon delivers firmware engineering as part of its vertically integrated product development services. Established in 2011, the company serves startups and mid-sized firms building smart consumer devices, environmental sensors, and wearable electronics.
Its firmware group specializes in application-specific operations programming, protocol-level development, and efficient memory management tailored to low-cost chipsets. Jaycon frequently works with clients on early-stage concepts, helping translate technical requirements into firmware that fits within physical and cost constraints.
Key features:
- Integrated product engineering from prototyping to production
- Firmware tailored to memory and performance limitations
- Active collaboration with hardware and manufacturing teams
Services:
- Custom firmware development for smart hardware
- Real-time data communication and sensor control
- Firmware integration with PCB and casing design
- Protocol development and wireless communication firmware
- Production support and firmware quality assurance
6. Salvo Software
Company size: 11–50
Headquarters: Seattle, Washington, USA
Salvo Software delivers firmware engineering services for embedded devices with a focus on energy management, wireless communication, and environmental resilience. The company develops firmware for ARM-based microcontrollers and integrates real-time operating systems (RTOS) for devices requiring deterministic behavior and precise resource allocation.
Their portfolio includes projects across marine navigation, fitness technology, and smart energy systems. Known for one of the best firmware development services, Salvo supports firmware for low-power applications, emphasizing advanced power-saving features and seamless OTA update capabilities. Integration between firmware and device-level hardware is refined through component-specific adaptation, reducing latency and improving operational stability.
Key features:
- Energy-optimized firmware for real-world deployment
- RTOS integration for time-critical operations
- Wireless support, including BLE and custom communication stacks
Services:
- Embedded firmware development for ARM platforms
- Bare-metal and RTOS-based software for sensors and controllers
- BSP creation and hardware adaptation
- IoT system integration and diagnostics
- Maintenance, optimization, and OTA firmware updates
7. Axio Electronics
Company size: 51–200
Headquarters: Pune, India
Axio Electronics provides embedded product development services, combining firmware engineering with electronics design and prototyping. The company supports hardware-software integration at every stage, from schematic capture and PCB layout to low-level software development.
Founded in 2005, Axio has delivered over 600 embedded projects globally. Their firmware capabilities support applications in industrial automation, medical diagnostics, and consumer electronics. The engineering team develops firmware for microcontrollers and embedded processors, often working with wireless modules, sensors, and real-time interfaces.
Key features:
- Firmware built alongside hardware prototypes
- Consistent delivery across regulated and commercial sectors
- Embedded software integration for mixed-signal systems
Services:
- Firmware development for microcontrollers and SoC
- Hardware design and PCB prototyping
- Embedded testing and system validation
- Support for regulatory compliance in electronic systems
- Custom consulting for embedded optimization
8. Integra Sources
Company size: 51–200
Headquarters: Astana, Kazakhstan
Integra Sources develops custom firmware and embedded systems for specialized hardware applications. The company builds software for 8-bit to 64-bit microcontrollers and SoCs, including both RTOS and bare-metal designs. Its firmware engineering supports medical devices, smart agriculture sensors, industrial monitoring, and automation platforms.
Integra’s engineering team offers BSP development, protocol stack implementation, and low-level firmware optimization. The company also provides support for debugging and upgrading existing firmware systems, particularly where third-party codebases require tuning or feature expansion.
Key features:
- Firmware for custom and constrained embedded platforms
- Specialized in debugging and refactoring third-party firmware
- Experience in RTOS, SoC firmware, and multi-protocol systems
Services:
- Low-level firmware design for 8/16/32/64-bit microcontrollers
- BSP development and system integration
- Optimization of legacy or underperforming firmware
- Firmware for sensors, control modules, and signal processing
- Embedded development support for niche industries
9. DevsData LLC
Company size: 11–50
Headquarters: Brooklyn, NY, USA
DevsData LLC provides embedded software and firmware development, working with clients in North America, Europe, and Israel. The company supports startups, mid-size firms, and enterprise clients with firmware for connected devices, real-time monitoring systems, and sensor-driven platforms, positioning it among the best firmware development services providers.
The company maintains a distributed model with local project management and engineering support in the US and EU. DevsData’s firmware development services are strengthened by its embedded recruitment division, which maintains a database of over 65,000 vetted firmware engineers. This allows clients to scale teams or access specialized skills during product lifecycles.
Key features:
- Distributed engineering model with local project coordination
- Recruitment infrastructure to support embedded team scaling
- Strong record of delivery in regulated and commercial firmware environments
Services:
- Custom embedded firmware development
- Real-time system implementation
- Embedded software recruitment and staffing support
- Integration of firmware with connected device platforms
- Long-term maintenance and technical consulting
10. Scalo
Company size: 501–1K
Headquarters: Wrocław, Poland
Scalo delivers firmware and embedded systems development for industries such as automotive, healthcare, and manufacturing. The company builds firmware for real-time environments using RTOS, embedded Linux, and hybrid low-level platforms, enabling devices to maintain responsiveness, interoperability, and long-term system compatibility.
Scalo’s projects span firmware modernization, system migration, and original embedded software builds. Their firmware work is typically part of a broader system redesign or product extension, often requiring synchronization with cloud APIs, edge computing modules, or remote control interfaces.
Key features:
- Focused on long-lifecycle embedded product development
- Offers firmware modernization and migration paths
- Flexible engagement formats tailored to project size and scope
Services:
- Embedded Linux and RTOS firmware development
- Firmware for connectivity, security, and device control
- Testing, maintenance, and long-term support
- Firmware upgrades for legacy systems
- Integration with modern IoT architecture
Summing Up
Choosing the right partner for embedded development has a direct impact on product stability, time to market, and long-term scalability. The companies highlighted above represent a high standard in technical expertise, cross-industry experience, and execution reliability.
For organizations seeking the best firmware development services in 2025, selecting a provider that aligns closely with your hardware roadmap and system requirements remains a decisive factor in building competitive, future-ready devices.
If you’re planning a firmware project or need support scaling your embedded systems, start by reaching out to one of these trusted providers – your next product’s performance may depend on it.
