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

Mesh Systems

Poland Remote contract

Posted: December 30, 2025

Required Skills

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.

Requirements:
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

Benefits:
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.

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