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Software Engineer, Modem BSP

TrellisWare Technologies trellisware.com Open · verified Oct 24, 2026
San Diego Full-time Mid-level Software Engineering

At a glance

Mid-level Software Engineering role at TrellisWare Technologies. San Diego · full-time · $115,000–$200,000 base.

SalaryStated by TrellisWare Technologies
$115,000 – $200,000
Base salary for this role, in USD per year, as published in the posting.
This role, from TrellisWare TechnologiesOur estimate for the market: $138,625–$176,875Median $150,738
The range includes the market median of $150,738 for mid-level software engineering roles in San Diego.
Worked out from 18 postings that stated pay, median $150,738. Last updated Oct 8, 2026.
RoleSoftware Engineering
SeniorityMid-level
LocationSan Diego
EmploymentFull-time
Base pay$115,000–$200,000
PostedNov 21, 2025 · 11mo ago
Role brief

techroles summary, based on the employer's posting.

What you'll do

  • Build and maintain hardware adaptation, device drivers, bootloader settings and system startup routines
  • Tailor software and improve performance for particular hardware and operating system combinations
  • Assess real-time operating system speed and portability on target hardware
  • Bring designs onto physical hardware in the lab and explain design options through engineering documentation and presentations

What you bring

  • A bachelor's degree in electrical or computer engineering, computer science or a related discipline
  • At least four years integrating real-time operating systems and four years developing embedded software
  • Strong C and C++ skills, with experience in embedded architecture, hardware interaction and Linux subsystems
  • Hands-on use of debugging equipment such as oscilloscopes, logic analyzers or JTAG tools
  • U.S. citizenship or permanent residency

Who this fits

This role suits an embedded software engineer who can work independently and alongside a team, and communicate technical reasoning clearly. It is a hybrid position based in San Diego. U.S. citizenship or permanent residency is required; some positions may require a clearance or eligibility to obtain one.

From the employer

TrellisWare launched in 2000 with an innovative culture striving to push technological boundaries in the area of wireless communications. We are now a worldwide leader in highly advanced algorithms, waveforms, and communications systems that range from small form factor radio products to fully integrated solutions.

At TrellisWare, we connect passion with purpose and together we make an impact- on our careers, our company, and the world. And you can too. If you love to innovate and collaborate in a dynamic environment where boundaries are being pushed, you belong at TrellisWare. Where the opportunity to serve is not a challenge but a gift. Where you’re never going alone. Because there’s too much at stake to go solo.

Our Radio Products Team is seeking a hybrid Software Engineer, Modem BSP. You would be responsible for working on next generation self-networking hand-held radios for domestic and foreign defense forces. A typical day might start with you working in your personal office designing and implementing an initialization routine, hardware driver/abstraction layer, or a real-time operating system abstraction layer. It could move into one of our many state-of-the-art labs with your teammates to bring up your design on physical hardware. Enhancing cohesiveness and maintaining team morale is a responsibility of all our team members, as is the ambition for self-improvement and talent development. Through this dedication to unity and professional advancement, each team member is directly impacting the successful outcome of TrellisWare’s deliverables and setting the tone for our core values of delivering excellence, pushing boundaries, and empowering people.

The essential duties and responsibilities include:

  • Design, implement, integrate, and maintain:
    • Hardware adaptation, device drivers, bootloader configuration.
    • System initialization.
    • Customization and optimizations for specific hardware and operating systems.
  • Perform feasibility studies, and performance analysis of real-time operating system performance and portability on specific hardware targets.
  • Document and present design alternatives using standard professional practices and corporate defined engineering processes.
  • Develop relationships with team members built on trust and respect.

Education and work experience requirements are:

  • Bachelor's degree in Electrical/Computer Engineering, Computer Science or related field of study required.
  • Minimum of four years’ experience integrating with a real-time operating system (Nucleus, FreeRTOS, VxWorks) and four years of embedded software development experience.
  • Deep proficiency in C and C++.
  • Expertise in embedded systems architecture, hardware/software interaction, inter-processor communications, asymmetric multiprocessing, and Linux sub-system interaction.
  • Experience using debugging tools such as oscilloscopes, logic analyzers, JTAG debuggers, test script usage.
  • Experience with Object-oriented design, data link layer and device drivers as well as ARM based processors.

To be considered for this position, you would need to meet, at a minimum, the knowledge, skills, and abilities listed here:

  • Real-time operating systems for embedded products.
  • Integrating with hardware drive driver adaptations, operating system abstractions and boot sequencing.
  • General Linux sub-system fundamentals.
  • C/C++ and Python.
  • Distributed revision control systems (GitHub), and common RTOS development tools (i.e. compilers, linkers, and debuggers).
  • You can think on your feet - you are analytical, pay attention to detail and are able to communicate your thought process both written and verbally.
  • You are able, and enjoy working independently as well as in a team environment.
  • Strong collaborative drive and interpersonal skills.
  • Strong initiative, proactive work ethic and prioritization skills.
  • Trustable judgement and analytical problem-solving skills.
  • Effective execution and decision making.
  • Champion of change and promotes innovation.
  • Strong written and verbal communication skills.

The physical demands described here represent those that must be met in order to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable those with qualified disabilities.

  • Able to frequently sit, stand, walk, use hands to fingers, handle or feel, reach within hands and arm’s length, stoop, kneel, and crouch, talk and hear.
  • Regularly required to sit for extended periods of time; frequently required to use office equipment such as PC, printer, telephone, etc.
  • Able to regularly lift and/or move up to 10 pounds, frequently lift and/or move up to 25 pounds, and occasionally lift and/or move up to 50 pounds.
  • Specific vision abilities required by this job include close vision, distance vision, color vision, peripheral vision, depth perception, and ability to adjust focus.

Additional requirements are:

  • U.S. Citizenship or Permanent Residency

Note: Many of TrellisWare's positions require a security clearance or the ability to obtain one. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.

TrellisWare Technologies pays competitively according to the market in an individual's geographic location, in addition to their qualifications and experience. The posted range is annually and for individuals located in the San Diego, CA area.

San Diego, California Pay Range$115,000—$200,000 USD

Disclaimers

  • The above statements are not intended to be an exhaustive list of all responsibilities, duties and skills required of personnel so classified. Nothing in the job description restricts the company's right to change, assign, or reassign duties and responsibilities at any time for any reason.
  • As part of our onboarding process, we conduct background checks, where legally permitted and appropriate for the role, in accordance with applicable laws, regulations, and privacy requirements.
  • By submitting your application, you acknowledge that TrellisWare Technologies may collect, process, use and obtain your personal information for recruiting and hiring purposes in accordance with applicable data protection and privacy laws. Please review our Employee-Applicant Privacy Notice for more information.

*TrellisWare Technologies, Inc. is an EEO/AA/Disability/Vets Employer.*

Check out the Careers page for more information about working at TrellisWare Technologies.

Opportunity

Software Engineering work from LinkedIn, X, Reddit and Upwork, in one list.

Each morning you get everything that fits, strongest first.

Software Engineering$110k+

Find me work

By the team behind techroles.

Find me work
Opportunity

Software Engineering work from LinkedIn, X, Reddit and Upwork, in one list.

Each morning you get everything that fits, strongest first.

Find me work

By the team behind techroles.