Staff Software Engineer - Embedded C++ / RTOS / MCU (Real Time Feedback Control)

Company Information:

At HiArc, we believe clients don't need another vendor; they need a strategic partner who gets it. One who listens harder, thinks deeper, and builds smarter-around their needs, products, and goals. HiArc engineers and manufactures complex medical technologies with one goal in mind: creating the perfect fit for our clients. No off-the-shelf thinking. No compromises. Just a tailored, high-performance solution our clients need, the way they need it. That's why HiArc is the most client-centered partner in the market. We fuse design, engineering, and manufacturing into a seamless, collaborative process-crafted entirely around our clients. We operate as an extension of our clients' teams, de-risking their processes and accelerating their path to market. And the result is a solution you won't find anywhere else.

Join our team! We hire experts in hardware and software design, robotics, optics, fluidics, chemistry integration, motion and thermal control, risk management, supply chain management, performance testing, advanced manufacturing techniques, finance, human resources, sales, and marketing.

For more information, please visit HiArc.

Merrimack, NH (or Onsite/Hybrid)

Full-Time

Medical Devices

? Embedded / Firmware / Real-Time Systems

Job Summary:

About the Role

We are seeking a Staff Software Engineer specializing in hands-on embedded C++ development for real-time feedback control systems running on an RTOS on an embedded microcontroller (MCU). You will build production firmware for medical instrument control platforms, contributing across requirements, development, integration, verification support, and sustaining in a regulated product development environment.

What You'll Do (Key Responsibilities)

• Design, implement, and deliver reliable, high-quality embedded software with strong emphasis on C/C++ for embedded systems.
• Develop and integrate real-time firmware/software for medical instrument control products, including timing-critical behaviors and deterministic execution on an RTOS.
• Drive software requirements with team members and proactively integrate with system requirements to ensure end-to-end system performance.
• Participate in change control activities, including investigation and resolution of software defects.
• Apply software engineering best practices (unit/integration testing, static analysis, code reviews, design reviews, and clear documentation).
• Collaborate across disciplines (software, systems, electrical, mechanical) and with non-engineering partners to deliver programs on schedule.
• Support application/customer engineering needs as required, including troubleshooting and technical communication.

Required Qualifications

• Bachelor's degree in Computer Engineering, Software Engineering, or related discipline (Master's preferred).
• 14+ years of applicable, progressively complex software design/development experience.
• Strong proficiency in embedded C++ (and C), including developing production firmware on resource-constrained systems.
• Expertise working with Real-Time Operating Systems (RTOS) in embedded products.
• Demonstrated ability to produce robust software using disciplined engineering practices (debugging, defect resolution, and configuration/change control participation).

Preferred Qualifications (Nice to Have)

• Experience developing software in regulated industries, preferably medical devices.
• Familiarity with medical software lifecycle expectations such as IEC 62304 and quality systems such as ISO 13485.
• Experience with C# (e.g., tooling, test applications, or companion software).
• Familiarity with software testing and test equipment/fixtures.
• Knowledge of FPGA/VHDL (supporting broader platform development).

Why This Role

You'll build mission-critical embedded software that powers real-time medical instrument control systems, working in a product-focused environment where rigor, reliability, and performance matter.

#Embedded C++, #C, #Firmware, #Embedded Software, #Real-Time Software, #RTOS, #Microcontroller, #MCU, #Real-Time Control, #Feedback Control, #Medical Devices

#LI-HA1

Here Are Some of the Great Benefits We Offer:

• Most locations offer a 9/80 schedule, providing every other Friday off
• Competitive compensation & 401(k) program to plan for your future
• Robust medical, dental, vision, & disability coverage with qualified wellness discounts
• Basic Life Insurance and Additional Life & AD&D Insurances are available
• Flexible Vacation & PTO
• Paid Parental Leave
• Generous Employee Referral Program
• Voluntary Benefits Available: Longer Term Care, Legal, Identify Theft, Pet Insurance, and more
• Voluntary Tricare Supplement available for military retirees

This job description does not list all the duties of the job. You may be asked by your supervisors or managers to perform other duties. The employer has the right to revise this job description at any time. The job description is not an employment contract. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions of this position. HiArc, an Elbit America company, is an equal opportunity employer as to all protected groups, including protected veterans and individuals with disabilities.

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