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Sr. Firmware Engineer

Job in Cheshire, New Haven County, Connecticut, 06410, USA
Listing for: Airgas, Inc.
Full Time position
Listed on 2026-01-13
Job specializations:
  • Software Development
    Embedded Software Engineer, Software Engineer, Embedded Systems / Firmware, C++ Developer
Salary/Wage Range or Industry Benchmark: 125000 - 150000 USD Yearly USD 125000.00 150000.00 YEAR
Job Description & How to Apply Below

Sr. Firmware Engineer (Open)

Location:

Cheshire, CT (ATS) - Management

At Airgas, we are committed to building a diverse and inclusive workplace that embraces the diversity of our employees, our customers, patients, community stakeholders and cultures across the world.

Airgas is hiring for a Sr. Firmware Engineer in Cheshire, CT.

We are looking for you!

  • Travel:
    Occasionally (1-10% of work time)

  • In-office role- M-F

  • Pay: 130-145K

Senior Firmware Engineer with 5+ years of experience developing embedded systems. The candidate will be accountable for designing, building, and testing embedded firmware/software for wireless electronic products for the gas industry. The candidate will work within a multidisciplinary team and be responsible for new products from their design stage through commercialization. We require an individual that is comfortable and competent in the role of a firmware technical leader with experience in firmware development including but not limited to C and RTOS.

Essential

Duties and Accountabilities
  • Design, build, test, and document microprocessor based firmware for wireless electronic products from concept, feasibility, prototyping through production.

  • Create embedded firmware and software in widely used software development environments (e.g. IAR Systems, AVR Studio, Eclipse, MPLab IDE, Zephyr).

  • Create software design requirements, test plan and test results documentation for various platforms.

  • Work closely with hardware engineers in specifying components for efficient firmware design.

  • Working with hardware team and others, create and design PC based software to create production, manufacturing and product validation test fixtures

  • Conduct system functional tests and troubleshoot products and equipment as required.

  • Provide and continuously communicate time and cost estimates for projects.

  • Provide ongoing technical assistance to manufacturing.

Required Qualifications
  • BS+ in Software Engineering, Electrical Engineering or Computer Science.
  • 5+ years of experience designing, building, and testing firmware and hardware for embedded systems.
  • Experience generating firmware for 8-bit, 32-bit single or dual core microprocessor systems including use of peripheral devices such as A-D converters, voltage/current switches/regulators/controllers/monitors, batteries, solar panels, and charging system controllers in assembly, C or other higher languages. Familiarity with communication protocols such as SPI, I2C, Ethernet, TCP/IP, wireless networks desired.
  • Experience in Low power applications for fielded devices.
  • Experience with revision control applications and documentation, e.g. Git, Git Hub, Tortoise Git, Doxygen
  • Experience with PC based software for controlling electronic products including but not limited to VB, Visual Studio. NET, C #, Lab View.
  • Experience with Yocto Linux and real time operating systems (RTOS) for embedded systems
  • Experience in BSP development and RPM creation for Linux based microprocessors.
  • Experience using oscilloscopes, network analyzers, spectrum analyzers and basic lab tools and instruments.
  • Desired direct design experience with RF wireless communication technologies such as Wifi, 4G, 5G, Mesh network, Bluetooth, Sigfox and LoRa.
  • Experience working with FPGA firmware including but not limited to Verilog, VHDL etc. desired.
  • Advanced mathematical skills relevant to the application of firmware/software engineering
Preferred Qualifications
  • Experience in BSP development for IMX
    93 core processor.
  • Experience in Zephyr RTOS development for Ublox NORA-B120.
Computer Skills
  • Comfortable using firmware development tools (IDE).
  • Comfortable programming microprocessors using industry standard practices and tools.
  • Comfortable documenting software and associated activities.
  • Comfortable using typical tools to develop, test and troubleshoot firmware.
  • Experience with mathematical and simulation tools a plus
  • Basic knowledge of Google applications and Gmail
  • Able to save and maintain electronic files
Communication and/or Critical Thinking Skills
  • Ability to read, analyze and interpret general business periodicals, professional journals, technical procedures, or governmental regulations
  • Ability to write routine business…
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