Senior Firmware Engineer

Company Overview:

SCRAM Systems is a leading provider of alcohol and location monitoring hardware, software, and mobile apps, including the SCRAM Continuous Alcohol Monitoring® (SCRAM CAM®) bracelet, the LifeSafer® L250 Ignition Interlock device, and LifeSafer Intelligence Speed Assistance. We provide an integrated approach to supporting our customers by offering solutions specific to court and agency needs in the community corrections industry throughout all phases of client management.

As a company, we are committed to continuing our tradition of re-engineering operations to streamline processes, enhance productivity, and improve client outcomes through constant innovation. Our purpose is to change lives, reunite families, and make our communities safer through advanced technology and world-class service.

Shift: First Shift

Job Summary:

Design new products and enhance/improve current products. Seek new and better technologies and methods to increase product reliability, add features and reduce sustaining engineering. Participate in putting new processes in place to improve productivity

Duties/Responsibilities:

• Architect, Design, Implement and Test, electronics and firmware on assigned projects.
• Participate in creating technical Product Requirements from Marketing requirements.
• Participate in creating Project Plans including Project Schedules. This includes estimating time required to implement various tasks associated with electronics and firmware development, establishmilestones and meet those milestones.
• Effectively use Product Development Process and industry standard product development methodologies and design tools. For electronics and firmware this includes producing and maintaining analysis, Product Requirements Document, architecture, high-level design, detail design, schematics, circuit simulation, worst case tolerance analysis, node-by-node check-out, Net list checks, no component used outside Mfg's recommendations, revision control, modular coding, code coverage testing, boundary testing, developer testing and product verification testing. Design reviews are conducted throughout the product development process. Participate in the continuous improvement of engineering practices and procedures.
• As an individual contributor, meet project objectives with innovation, creativity and good engineering practice. Design new, innovative products and enhancements/improvements to current products. Seek new and better technologies and methods to increase product performance, add features and reduce component and production costs. When appropriate, initiate putting in additional hours to stay off assigned project's critical path.
• Utilize Rapid Prototype techniques to create mock-ups of products to be used by Marketing and Sales to validate market requirements.
• Provide marketing support, which includes providing technical evaluations and developing project development and product cost estimates for new product ideas.
• Provide Engineering support to Sales, Customer Service and Marketing.
• Provide support to Production, which includes making design changes to improve manufacturability and reduce product build costs as well as support the selection and qualifying vendors/suppliers. Also, participate in failure analysis/investigations to find the root-cause of production and field failures and, if appropriate, make design changes.
• Be familiar with domestic and international Regulatory Standards; FCC, UL, CE, IC, BSI, CENELEC, ETSI, etc. Support testing to these standards and getting certifications as appropriate. Be knowledgeable of the relevant standards and include them in the ProductRequirements Document.
• Continuously improve skills required; seeking training through seminars, literature, industry shows/workshops and relevant course work.

Experience and Skills:

Please Enter Required Skills here
Job Benefits:

Required Skills

• Expert proficiency in Embedded C and C++
• Strong experience with bare-metal firmware development and low-level hardware interfacing
• Extensive experience developing firmware for battery-powered portable or handheld products
• Experience with ARM Cortex-M microcontrollers and MCU architectures
• Direct register-level programming and peripheral driver development
• Development of board support packages (BSPs), device drivers, and hardware abstraction layers (HAL)
• Strong understanding of interrupts, timers, DMA, watchdogs, and power management subsystems
• Experience with bootloader design, firmware updates, and recovery mechanisms
• Expertise in power optimization, sleep-state management, and battery life extension techniques
• Experience integrating and debugging cellular communication modules (LTE, LTE-M, NB-IoT, 4G/5G)
• Strong knowledge of wireless communication protocols and networking concepts
• Experience with MQTT, TCP/IP, UDP, TLS/SSL, HTTP/HTTPS, and related embedded networking stacks
• Hands-on experience with UART, SPI, I2C, USB, GPIO, ADC, and other embedded interfaces
• Experience with real-time embedded systems and RTOS environments such as FreeRTOS or Zephyr
• Strong debugging skills using oscilloscopes, logic analyzers, JTAG, and SWD tools
• Experience with firmware architecture, software design patterns, and code optimization
• Proficiency with Git-based source control and CI/CD workflows
• Experience bringing up new hardware platforms from prototype through production
• Ability to troubleshoot hardware, firmware, and communication issues across the full product stack

Preferred Skills

• Experience with LTE-M, NB-IoT, and low-power IoT device development
• Experience with Nordic nRF91, STM32, NXP, Renesas, or similar embedded platforms
• Bluetooth Low Energy (BLE), Wi-Fi, GNSS, or NFC integration experience
• Secure boot, firmware signing, encryption, and OTA/FOTA update implementation
• Knowledge of battery charging systems, PMICs, and fuel gauge ICs
• Familiarity with carrier certification processes (Verizon, AT&T, T-Mobile, PTCRB)
• Experience developing safety-critical or regulated products
• Manufacturing test support and product commercialization experience

Senior-Level Competencies

• Technical leadership and firmware architecture ownership
• Mentoring and code review experience
• Ability to define firmware requirements and development roadmaps
• Cross-functional collaboration with hardware, RF, cloud, mobile, and manufacturing teams
• Proven track record delivering connected products from concept through production

Education and Experience:

• BS ECEN or Computer Science
• 10+ years of Firmware Development

Physical Requirements (With or without reasonable accommodation):

Comprehensive Benefits Package:

At SCRAM, we prioritize the well-being and financial security of our employees. We understand that benefits play a crucial role in ensuring our team members feel supported and valued. That's why we offer a comprehensive benefits package that includes:

• Retirement Savings:
  • 401(k): We offer a 401(k)-retirement savings plan to help you plan for your future financial security.
  • 401(k) Matching: SCRAM provides a 100% match for the first 3% contributed and another 50% match for the next 2% contributed, amplifying your savings potential.
• Health and Wellness:
  • Health Insurance: We provide comprehensive health insurance coverage to safeguard your health and that of your family.
  • Dental Insurance: Our dental insurance plan ensures access to quality dental care for you and your dependents.
  • Vision Insurance: Take care of your vision health with our vision insurance coverage.
  • Health Savings Account (HSA): Our HSA option allows you to save pre-tax dollars for medical expenses, providing flexibility and savings opportunities. We strongly value saving for your wellness, so the company provides an employer contribution towards your HSA annually.
  • Flexible Spending Account (FSA): With our FSA, you can set aside pre-tax dollars to cover eligible medical expenses not covered by your health insurance plan. You can also save pre-tax dollars to help cover the cost of child care with our Dependent Care FSA.
• Financial Protection:
  • Disability Insurance: We offer company paid short and long term disability insurance to provide financial protection in the event of injury or illness that prevents you from working.
  • Life Insurance: Ensure the financial security of your loved ones with our company paid life insurance coverage at 1.5x your annual salary. Want more coverage – supplemental life is also available.
• Work-Life Balance:
  • Paid Time Off: We understand the importance of work-life balance. That's why we provide generous paid time off, allowing you to recharge and enjoy life outside of work.
  • Paid Sick Time: Your health matters to us. We offer paid sick time to support you during times of illness.
  • Employee Assistance Program (EAP): Our EAP offers free confidential counseling and support services to help you navigate personal or professional challenges.
• Additional Perks:
  • Referral Program: We believe in the power of teamwork and collaboration. Our referral program rewards you for referring talented individuals to join our team.
  • Tuition Reimbursement Program: We support the professional growth of all employees, but understand that going back to school is expensive. We offer tuition reimbursement up to the IRS limit annually to help our employees flourish.

At SCRAM, we are committed to empowering our employees to thrive both personally and professionally. Join us and take advantage of our comprehensive benefits package as you embark on a rewarding career journey with us.

From: SCRAM Systems