Senior Embedded Software Engineer

X4 Technology; Brentwood (NY); On-site; USD 120,000 - 160,000; Full time

Benefits offered by this job

9/80 schedule

On-site in Long Island, NY

Industry-leading benefits

Job summary

X4 Technology in Long Island, NY is seeking a mid-to-senior Embedded Software Engineer to design, develop and support firmware for low-power connected systems. The role blends firmware and hardware-adjacent work with close collaboration to hardware teams, electronics, and systems engineering.

The permanent position offers industry-leading benefits and a 9/80 schedule, with majority onsite work in the Long Island area.

Qualifications

• 7+ years of embedded systems experience.
• Bachelor’s or Master’s degree in Electrical/Computer Engineering.
• Strong proficiency in embedded C/C++ and RTOS-based firmware.

Responsibilities

• Develop and maintain embedded firmware in C/C++ for microcontroller-based systems.
• Design firmware for low-power, battery-operated devices.
• Collaborate with hardware, electrical, and systems engineers.
• Support debugging and validation with lab equipment.

Skills

Embedded C/C++

Hardware collaboration

Low-power design

RTOS experience

Team collaboration

Education

Bachelor’s or Master’s degree in Electrical/Computer Engineering

Tools

ARM STM32

NXP

Bare-metal/RTOS firmware

Job description

Senior Embedded Software Engineer (Wireless & Hardware Systems) – Permanent

About the Company

A confidential, well-established product design and engineering consultancy is seeking an experienced Embedded Software Engineer to join its team on a permanent basis. The organisation delivers end-to-end product development services, turning complex ideas into fully engineered, production-ready solutions across embedded systems, electrical, mechanical, and software disciplines.

Projects span connected devices, IoT systems, and low-power embedded products where hardware and firmware are tightly integrated. Engineers work in multidisciplinary teams focused on building real-world, manufacturable solutions.

The Role

We are looking for a mid-to-senior Embedded Software Engineer to design, develop, and support firmware for low-power, connected embedded systems.

This role is ideal for engineers who enjoy working across both firmware and hardware-adjacent development, including close collaboration with electrical and hardware teams.

We are especially interested in candidates with experience in one or more of the following areas:

• Wireless / connectivity development (Bluetooth / BLE, Wi-Fi, Zigbee, cellular IoT)
• Hardware development or strong hardware collaboration experience
• Schematic review and understanding of electronic designs
• Battery-powered and low-power system design and optimisation

You will be embedded in a team working across full product lifecycles—from early design through to prototype, validation, and production support.

Key Responsibilities

• Develop and maintain embedded firmware in C/C++ for microcontroller-based systems
• Design firmware for low-power, battery-operated devices
• Work with hardware interfaces including I²C, SPI, UART, CAN, GPIO, and ADC
• Read and interpret schematics and component datasheets or Implement and support wireless communication features (BLE and other IoT protocols)
• Support debugging and validation using lab equipment such as oscilloscopes and logic analysers
• Collaborate closely with hardware, electrical, and systems engineers
• Contribute to firmware optimisation, verification, and system-level performance improvements

Required Experience

• Bachelor’s or Master’s degree in Electrical Engineering, Computer Engineering, or related discipline
• 7+ years of embedded systems experience
• Strong proficiency in embedded C/C++
• Experience with microcontrollers (e.g. ARM STM32, NXP, AVR, PIC, DSP platforms)
• Experience developing bare-metal and/or RTOS-based firmware
• Experience working with low-power embedded and battery-operated systems
• Ability to work effectively in hardware-facing engineering environments

Preferred Experience

• Exposure to PCB design tools and workflows
• Strong understanding of Bluetooth Low Energy (BLE) and IoT connectivity
• Ability to read and interpret schematics at system level
• Experience with battery systems, power management, or energy optimisation
• Familiarity with Silicon Labs BG22 or similar platforms
• Experience working in client-facing or consultancy-style engineering environments
• Ability to contribute to system architecture and design decisions

Location & Engagement

• Permanent with Industry leading benefits and a 9/80 schedule
• Majority onsite working model in Long Island, NY area
• Some flexibility depending on project requirements
• Potential for long-term engagement based on performance and project needs

What’s on Offer

• Competitive W2 compensation aligned with experience
• Exposure to complex, real-world embedded product development
• Cross-disciplinary engineering environment (hardware, firmware, systems)
• Opportunity to work on full lifecycle product development
• Flexible working structure (including 9/80 schedule where applicable)
• Collaborative, engineering-driven culture focused on innovation

Why This Role

This is a hands-on embedded engineering role where firmware meets hardware. You’ll be working on complete systems—not isolated software components—contributing directly to how connected, low-power products are designed and brought to life.

The employer is committed to building a diverse and inclusive engineering team and considers all qualified applicants without regard to protected characteristics.