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Sr. Software Systems Engineer

SPX

📅 18/08/2026
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Building the people that build the world. With platforms in HVAC and Detection and Measurement, SPX Technologies builds innovative solutions that enable a safer, more efficient, sustainable world. Through our RiSE talent development framework, we Reach, Identify, Strengthen, and Engage our employees to support them in their continued development. We’re a global company of problem solvers, collaborators, and innovators, and our businesses build solutions that impact the world. As part of Detection and Measurement, TCI is a global leader in innovative spectrum monitoring and communications intelligence (COMINT) systems. With solutions to ensure the efficient use of frequencies, long distance communications, monitoring and security communications intelligence applications, we improve communications and protect military forces and infrastructure around the world. How you will make an Impact (Job Summary) SPX is a diverse t eam of unique individuals who all make an impact. As a Senior Software System Engineer you will actively participate in the development of radio frequency signal acquisition, geolocation and analysis systems used for Signal Monitoring, Communications Intelligence, and Counter-UAS purposes. This person will apply their strong radio frequency and signal processing background, and software development skills to meeting signal detection, identification, processing, geolocation and analysis challenges facing spectrum regulators, intelligence organizations and defense agencies around the globe. Specifically, this person will develop software to implement architectures using TCI’s existing technical base along with new development work that will satisfy both customer specific and market generic requirements. Duties will include providing technical assistance to other engineering departments, customers and to the marketing and sales department. What you can expect in this role (Job Responsibilities) While each day brings new opportunities at SPX, your core responsibilities will be but not limited to: Develop a deep understanding of TCI’s COMINT/EW and Counter-UAS products, underlying technology and implementation, and become a key contributor to architecting and implementing new products and product improvements. Modify existing software and develop new software to implement improvements or add new features to our systems. Specify, test and qualify new and replacement system hardware components, including computers and drives. Perform QA testing and analysis of new hardware and software performance up to the system level. Develop automated QA test software and systems. Create and modify software installation programs to support product updates and new products. Develop and modify product documentation as needed. Support other engineering groups by becoming a “go to” expert on the functionality and performance of our products. Foster a broader understanding of our techniques and capabilities among other engineers. Provide technical support to our product support group and direct to end users to deploy new products, solve issues found in the field, and to gather user input on potential product improvements. Support Sales and Marketing activities by writing/reviewing marketing literature, proposals, and participating in customer meetings, presentations, and demonstrations. Stay current with new technology and techniques that apply to our product space as well as competitor’s capabilities. What we are looking for (Experience, Knowledge, Skills, Abilities, Education) We each bring something to the table, and we are looking for someone who has: Required Experience US Person or Permanent Resident Extensive experience in design, implementation and testing of complex realtime multithreaded software applications Extensive C/C++ software development experience (6+ years) Extensive Digital Signal Processing (DSP) and math background Radio Frequency (RF) theory and practice (propagation, antennas, receivers, signals, systems, etc.) RF Signals expertise, including signal modulation, demodulation, decoding and signal analysis techniques and tools Programming for Windows operating systems Networking and socket level programming Databases and database programming Ability to quickly learn and support a large existing C++ code base System QA testing, including developing and executing test plans and writing automated QA test programs Excellent communications skills Ability to write technical product documentation Preferred Knowledge, Skills, and Abilities SIGINT/COMINT/EW experience RF Direction Finding and Geolocation concepts, including AOA and TDOA Mapping concepts, standards, and programming Audio signal processing including analog and digital demodulation Drone signals and protocols (uplink and downlink including video) Experience operating commercial drones Full Motion Video (FMV) systems, including STANAG 4609, KLV Metadata, MPEG-2 Transport Stream, H.264/265 encoding Programming expertise: Highly proficient in C/C++ Multithreaded realtime processing Programming with Qt Programming in Python Embedded programming Realtime hardware control and data acquisition High performance graphics GUI design and programming Networking and socket level programming Databases and database programming (incl. SQL) XML and XML programming JSON and JSON programming API programming (developing and using) Software licensing AI concepts and programming Tools: RF Measurement equipment (VSA/spectrum analyzers, signal generators, and other electronic test equipment) Windows OS, including desktop, server and embedded variants Microsoft Visual Studio and TFS Qt Python Intel IPP InstallShield Postgres and Microsoft databases packages Experience with Visual Basic, MFC, C#, WPF/XAML and other Windows development tools/API’s Linux OS Linux/Unix utilities and shells Safenet software licensing tools Wireshark / network analysis tools Signal demodulation and decoding software packages (go2Signals, Wavecom, etc.) Creating and maintaining automated software build systems Knowledge of applicable RF/COMINT/EW industry standards such as VITA-49, JICD, CoT, etc. Ability to provide support to sales and marketing, including writing/reviewing marketing literature, proposals, and participating in customer meetings, presentations, and demonstrations. Ability to provide support and training to customer support teams, and direct to end users. Familiarity with worldwide COMINT/EW markets (customers, vendors, solutions) a plus Active US Security Clearance Education & Certifications 6+ years relevant work experience MSEE (or BSEE with extended relevant work experience) with emphasis on RF communication systems, Digital Signal Processing, and software Travel & Working Environment Ideally hybrid with ability to work at either our Everett WA (preferred) or Fremont CA office. Salary Range We recognize that attracting the best talent is key to our strategy and success as a company. As a result, we aim for flexibility in structuring competitive compensation offers to ensure we are able to attract the best candidates. As required by law in this state, the quoted salary range for this position is $178,000 - $300,000 and represents our good faith estimate as to what our ideal candidates are likely to expect. We tailor our offers within the range based on organizational needs, internal equity, market data, geographic zone, and the selected candidate’s experience, education, industry knowledge, location, technical and communication skills, and other factors that may prove rel
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