Senior Firmware Engineer (C/C++, Microsoft Azure IoT) - (B2B Contract)

Mesh Systems LLC; Remote; PLN 240,000 - 320,000; Part time

Job summary

A technology company specializing in IoT is seeking a Senior Firmware Engineer to design and develop next-generation firmware systems for IoT devices. You will guide the software development life cycle and write high-quality C/C++ code while collaborating with interdisciplinary teams. Ideal candidates possess deep knowledge of embedded systems and hardware design, strong English communication skills, and experience with Agile methodologies. This position offers remote work flexibility and competitive hourly rates.

Benefits

Training budget

Support for Microsoft certifications

Access to cutting-edge technology

Qualifications

• 5+ years of experience in firmware development with strong C/C++ skills.
• Experience with microcontrollers and RTOS for embedded systems.
• Strong understanding of hardware design and PCB layout.

Responsibilities

• Guide the Software Development Life Cycle for embedded software systems.
• Write high-quality C/C++ code for IoT connected devices.
• Collaborate with hardware and software engineers for system integration.

Skills

Fluency in C/C++

Firmware Design and Development

Development and Troubleshooting Embedded Targets

Various Protocols, Interfaces, Hardware, and Wireless Subsystems

Version Control and Agile Planning Tools

English Proficiency

Tools

Visual Studio

Azure DevOps

Git

Job description

About Mesh Systems

Mesh Systems are the Connected Product People. As a trusted Microsoft Partner, we help clients build, scale, and unlock value from their digital products. We specialize in creating scalable, cloud-based systems to process massive data volumes for global clients.

We are currently on an ambitious path to merge IoT with cutting‑edge Artificial Intelligence, opening doors to future‑proof projects. We're looking for an experienced Software Engineer to work with our engineering teams and help us shape the future of connected technology.

Compensation and Contract Model

Model: B2B Contract (100% Remote)

Availability: Collaboration within the Central European Timezone (CET).

Hourly Rate (USD): $40 - $50 USD / hour

Support: We provide support with formalities for Polish contractors working with a U.S. company.

What You Will Do

As a Senior Firmware Engineer, you will help in designing, developing, assembling, testing, troubleshooting, and delivering next‑generation firmware systems for IoT:

• Guide the Software Development Life Cycle (SDLC): Design, develop, test, document, deploy, and maintain embedded software systems.
• Implement Solutions: Write high‑quality C/C++ code for machinery connected to and running on Microsoft Azure.
• Integrate Systems: Collaborate with interdisciplinary teams, including hardware design, development, and validation, and software engineers to integrate into complete systems and optimize system‑level performance.
• Documentation: Write about firmware design, development processes, and usage instructions.
• Collaborate & Influence: Work in a small, autonomous engineering team, directly influencing the technical direction of our solutions.

What You'll Bring

We are seeking an engineer with senior proficiency and experience in the following:

• Fluency in C/C++: Deep knowledge of the language, framework, optimization, and modern design patterns.
• Firmware Design and Development: Focus on microcontrollers, RTOS, C/C++, and/or other embedded platforms.
• Development and Troubleshooting Embedded Targets Expertise: Including familiarity with hardware design, schematics, and PCB layout.
• Various Protocols, Interfaces, Hardware, and Wireless Subsystems such as:
  • Serial
  • Bluetooth
  • Wi‑Fi
  • Cellular
  • IP
• Version Control and Agile Planning Tools
• Peer Review such as:
  • Visual Studio
  • Azure DevOps
  • Git
• English Proficiency: Strong communication skills for seamless collaboration with U.S. partners and clients.

Bonus Points

• Familiarity with embedded IoT technologies such as:
  • Azure Sphere
  • Azure RTOS
  • Azure IoT Edge
  • Edge X
  • Azure IoT Hub client
• Familiarity with Atlassian tool suite, such as Confluence and Jira
• Experience with additional languages and OS such as C#, Rust, Java, Zephyr OS, FreeRTOS, and Linux

What Makes Working at Mesh Systems Unique?

• Autonomy & Impact: Work in small, agile teams where your engineering decisions have a real impact. We value pragmatic solutions and customer‑focused thinking.
• Cutting‑Edge Technology: Get direct access to Microsoft Azure technologies in Private Preview thanks to our close partnership.
• Culture: Join a team of passionate professionals and share knowledge about the most innovative solutions on the market.
• Future Focus (IoT + AI): Be part of our transformation, integrating IoT solutions with AI/Machine Learning at the intersection of the most advanced technologies.
• Professional Growth: We offer a dedicated training budget and full support for Microsoft certifications.