Firmware Engineer

JOB-2512

Hybrid in Andover, MA; can be remote
Duration: 8 months


OVERVIEW
The Firmware Engineer will be responsible for maintaining and updating firmware on four proprietary hardware devices critical to the operations of the Demand Response business. These devices support remote energy monitoring, control equipment toggling, and secure communication with central servers and dispatch platforms. This role requires a detail-oriented embedded systems engineer with deep knowledge of microcontroller architectures, communication protocols, and legacy firmware systems. The ideal candidate will be a proactive problem solver with a strong interest in sustaining long-lifecycle products and supporting hardware deployed in the field.

ESSENTIAL FUNCTIONS

Technical Firmware Maintenance

• Maintain and enhance embedded firmware for low-power microcontroller-based systems.
• Analyze, debug, and resolve field-reported issues, ensuring reliability and uptime.
• Modify and extend legacy codebases with minimal documentation.
• Collaborate with electrical engineers to support device-level debugging and testing.

Hardware Interface Integration

• Work with digital I/O, relays, KYZ pulse counting, analog inputs, and related interfaces.
• Use development tools and equipment such as debuggers, oscilloscopes, and logic analyzers.
• Integrate serial protocols including UART, RS-232, RS-485, SPI, and I2C.

Communication Systems

• Support and troubleshoot cellular modem communications using AT commands.
• Maintain and optimize firmware for reliable data transmission from field-deployed units.
• Support satellite module integration for remote telemetry.

Product Lifecycle & Sustainability

• Participate in long-term support for embedded products used in energy monitoring.
• Maintain secure firmware update mechanisms, bootloaders, and OTA processes.
• Ensure backward compatibility and long-term maintainability of deployed firmware.
• Collaborate with senior engineers to understand design rationale and architecture.

Documentation & Collaboration

• Create and maintain technical documentation outlining firmware behavior and architecture.
• Work cross-functionally with hardware and field teams to coordinate debugging and enhancements.
• Record and share tribal knowledge to enhance future sustainability.
  
  

ADDITIONAL DUTIES

• Support continuous improvement efforts in firmware processes and maintainability.
• Assist with legacy code refactoring efforts while minimizing risk to deployed systems.
• Provide input into hardware design with firmware constraints in mind.
  
  

REQUIREMENTS
Education

• Bachelor’s degree in Electrical Engineering, Computer Engineering, or related field (or equivalent experience).

Work Experience

• 2–5 years of experience in embedded firmware development.
• Prior exposure to legacy code maintenance and fielded device support.

Skills & Tools

• Experience in Embedded Systems programming with competence in C/C++, Python and Linux Shell Script
• Experience working with Embedded Linux and associated open-source resources, including cross compile toolchains and Yocto image build software.
• Ability to use debuggers, oscilloscopes and logic analyzers.
• Serial communication protocols: UART, RS-232, RS-485, SPI, I2C.
• Experience with Modbus, KYZ pulse metering, and industrial energy monitoring equipment.
• Familiarity with battery-powered device design and power optimization.
• Clear communication and strong documentation practices.
• Comfort with schematics and cross-functional engineering collaboration.

The pay for this role is up to $44 per Hour.

MWResource offers medical, dental and vision coverage through Florida Blue, short- and long-term disability coverage, employer paid life insurance, and participation in the MWResource 401K plan for US based consultants.

Applications accepted on a rolling basis until filled.

MWResource does not discriminate based on race, gender, color, religion, national origin, age, disability, veteran status, or anything else that makes you part of any group.

Candidates must be authorized to work in the United States.
Candidates will be required to pass a background check and drug screening.
Please note we are not open to outsourcing our recruitment needs.