Job#: 3046097 Job Description: Senior Embedded Wireless Firmware Engineer
Location: Onsite, Monday-Friday (9:00 AM - 5:00 PM)
Employment Type: Contract
Pay Rate: $55-$60/hourEducation: Bachelor's Degree in Electrical Engineering, Computer Engineering, Computer Science, or related field preferred
OverviewWe are seeking a Senior Embedded Wireless Firmware Engineer to support the design and development of next-generation connected devices and IoT solutions. This role requires expertise in embedded firmware development, wireless communications, real-time operating systems, and secure connected products.
The ideal candidate will have hands-on experience developing firmware for low-power wireless devices and collaborating with cross-functional engineering teams to deliver reliable, production-ready solutions.
Key Responsibilities- Design, develop, test, and maintain embedded firmware for wireless connected products
- Implement and optimize bare-metal and RTOS-based firmware architectures
- Develop low-power embedded solutions for battery-operated devices
- Design and support bootloaders and firmware update systems
- Develop over-the-air (OTA) firmware update capabilities
- Debug firmware and hardware issues using industry-standard tools
- Collaborate with hardware, RF, systems, and test engineers
- Document software architecture, design decisions, and development processes
- Support product testing, validation, certification, and release activities
Required QualificationsEmbedded Firmware Development
- Strong programming experience in Embedded C
- Experience with ARM Cortex-M microcontrollers
- Expertise with bare-metal and RTOS-based firmware development
- Experience with interrupt-driven architectures
- Strong understanding of:
- DMA
- Timers
- Watchdogs
- GPIO
- UART
- SPI
- I2C
- Experience developing bootloaders and firmware update mechanisms
- Experience using J-Link, SWD, GDB, or similar debugging tools
- Knowledge of low-power firmware design techniques
Wireless Communications
- Experience developing wireless embedded products
- Experience with one or more of the following:
- Z-Wave
- Proprietary sub-GHz wireless protocols
- Mesh networking
- Low-power wireless sensor networks
- Understanding of RF coexistence concepts
- Experience implementing OTA updates over wireless networks
Security
- Secure boot
- Firmware signing
- Key provisioning
- Encrypted OTA updates
- Secure pairing and authentication
- Replay protection
- Secure credential storage
Preferred QualificationsWireless Platform Experience
Experience with:
- Silicon Labs EFR32 devices
- Simplicity Studio
- Silicon Labs Gecko SDK
- Silicon Labs wireless stack APIs
- Z-Wave 700/800 Series
- SmartStart
- S2 Security
- OTA DFU mechanisms
- Wireless packet analysis and tracing tools
RF Engineering Knowledge
Preferred experience with:
- Antenna and PCB layout awareness
- RF sensitivity optimization
- Link-budget analysis
- Sub-GHz propagation behavior
- EMC/EMI troubleshooting
- FCC/CE certification support
- Spectrum analyzers and VNAs
Software Engineering Practices
- Modular firmware architectures
- State-machine design
- Event-driven systems
- Hardware abstraction layers
- Git workflows
- CI/CD pipelines
- Automated testing frameworks
- Strong documentation practices
Soft Skills- Ability to work independently with minimal supervision
- Strong communication and collaboration skills
- Comfortable working closely with hardware and systems engineers
- Strong organizational and documentation habits
- Ability to assess technical risk and communicate realistic timelines
- Proven problem-solving and troubleshooting skills
Ideal BackgroundCandidates with experience developing wireless products for smart home, building automation, industrial, infrastructure, HVAC, or IoT environments will be highly regarded. Experience bringing connected products from concept through production is strongly preferred.
Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico.
Everforth Apex uses a virtual recruiter as part of the application process. Click for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at
Everforth Apex Benefits Overview: Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Everforth Apex team member can provide.
Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.
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