Job#: 3025890 Job Description: About the RoleWe are seeking
Embedded Software Engineers to support our client's needs tied to firmware development, BLE connectivity, RTOS-based systems, and real-time embedded applications. This role centers on hands-on development of microcontroller firmware and integration of wireless, safety-critical, and real-time features.
What You'll Do- Develop embedded firmware in C/C++ for ARM Cortex-M or similar microcontrollers.
- Implement and optimize Bluetooth Low Energy (BLE) communication stacks (GATT/GAP profiles, bonding, pairing).
- Build applications running on RTOS platforms such as FreeRTOS, ThreadX, Zephyr, or QNX.
- Debug firmware using oscilloscopes, logic analyzers, JTAG, SWD, and protocol analyzers.
- Work closely with hardware, systems, and test engineering teams to ensure seamless device performance.
- Participate in code reviews, system design discussions, and architecture planning.
- Assist with firmware validation, board bring-up, and hardware-software integration.
What We're Looking For- 3-10+ years of embedded firmware development experience.
- Strong command of C/C++ in constrained embedded environments.
- Hands-on experience with BLE development (Nordic nRF52/nRF53, TI CC26xx, Silicon Labs, etc.).
- Solid understanding of RTOS concepts: task scheduling, interrupts, timers, concurrency.
- Experience debugging low-level issues with embedded tools.
- Comfort working onsite with hardware, prototypes, and lab equipment.
- Experience in medical devices or regulated environments is a plus but not required.
Nice to Have- Firmware security knowledge (OTA updates, encryption)
- Low-power wireless optimization
- Python scripting for automation or internal tools
- CI/CD for embedded (Jenkins, Git, CMake)
Why Join- Work on life-changing medical device technology.
- Build next-generation embedded features with a high impact.
- Contract-to-hire pathway available.
- Local, collaborative engineering culture.
Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join 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 ClearlyRated's Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click for more details.
Apex Benefits Overview: 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. 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, 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. 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 Apex team member can provide.
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