Embedded Software Engineer - ADV

Apex Systems; Indianapolis (IN); On-site; USD 76,000 - 83,000; Part time

Benefits offered by this job

Medical insurance

Dental insurance

401k match

HSA

Job summary

Everforth Apex is seeking a Senior Embedded Wireless Firmware Engineer to design and develop next-generation connected devices and IoT solutions. The role emphasizes embedded firmware, wireless communications, RTOS, and secure products, with hands-on work on low-power wireless devices and cross-functional collaboration.

Onsite in Indianapolis, IN, the contractor will implement bootloaders, OTA updates, debugging with J-Link/SWD, and ensure production-ready software, while coordinating with

Qualifications

• Embedded firmware development experience for wireless products.
• Experience with ARM Cortex-M microcontrollers and bare-metal or RTOS-based architectures.
• Knowledge of low-power design, DMA, timers, UART, SPI, I2C.
• Experience with bootloaders and firmware update mechanisms.
• Experience debugging with J-Link, SWD, or GDB.
• Experience in OTA updates over wireless networks and secure firmware practices.

Responsibilities

• Design, develop, test, and maintain embedded firmware for wireless products.
• Implement bare-metal and RTOS-based firmware architectures.
• Develop low-power embedded solutions for battery-operated devices.
• Design and support bootloaders and OTA update capabilities.
• Debug firmware and hardware issues; collaborate with hardware/RF teams.
• Document software architecture and development processes; support testing and certification.

Skills

Embedded C

ARM Cortex-M

RTOS-based firmware

Low-power design

OTA updates

Debugging tools

Wireless firmware

Education

Bachelor's degree in Electrical Engineering / Computer Engineering / Computer Science

Tools

J-Link

SWD

GDB

Bootloaders

OTA firmware update systems

Job description

# Embedded Software Engineer - ADVApply**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/hour****Education:** Bachelor's Degree in Electrical Engineering, Computer Engineering, Computer Science, or related field preferred**Overview**We 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 Qualifications**Embedded 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 techniquesWireless 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 networksSecurity* Secure boot* Firmware signing* Key provisioning* Encrypted OTA updates* Secure pairing and authentication* Replay protection* Secure credential storage**Preferred Qualifications**Wireless Platform ExperienceExperience 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 toolsRF Engineering KnowledgePreferred 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 VNAsSoftware 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 Background**Candidates 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 here 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 https://www.apexsystems.com/privacy-policy**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.**If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at [e-mail] or 804-523-8228. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.**UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems.***Employee Type:** Contract**Location:** Indianapolis, IN, US**Job Type:****Date Posted:** August 13, 2026**Pay Range:** $55 - $60 per hour