Join the dynamic team at DGS as a Senior Systems Engineer in Northern Virginia for a highly specialized role supporting RF geolocation and cellular systems. The person we need is not a general systems engineer or a general software engineer, but someone with real hands-on experience in RF geolocation, LTE/4G/5G cellular systems, SDR-based environments, and end-to-end system integration and validation. This person should be able to work across software, RF, signal processing, and test teams and help define requirements, interfaces, integration strategy, and overall system behavior. Strong Python skills and working knowledge of C or C++ are also important. The ideal candidate will understand TDOA-related system design, timing, and synchronization concepts, and be able to translate technical needs into a complete, working system.Key ResponsibilitiesTranslate customer or operational needs into clear system requirements and technical definitionsLead system design for RF geolocation and cellular analysis solutionsDefine subsystem behavior, interface requirements, data flows, and timing/synchronization approachesSupport the design of TDOA-based workflows, including sensor coordination, timing alignment, and fix-generation conceptsGuide integration across RF, software, signal-processing, and test teamsIdentify technical risks, resolve interface gaps, and drive system-level trade decisionsDefine verification strategy, integration approach, and performance validation criteriaLead technical reviews and provide hands-on engineering guidance during development and integrationRequired Qualifications10+ years of experience in systems engineering, RF systems, wireless systems, or signal-processing environmentsDemonstrated experience defining and integrating complex RF or wireless systemsStrong understanding of TDOA geolocation concepts and distributed system timing/synchronizationStrong understanding of LTE/4G and 5G cellular infrastructure, signaling behavior, and practical 3GPP conceptsHands-on experience with SDR-based system integration, bring-up, and validationExperience defining system requirements, interfaces, integration approach, and verification strategyStrong Python skills and working capability in C or C++Ability to work effectively across software, RF, DSP, and test disciplinesMust be legally authorized to work in the United StatesPreferred QualificationsDirect experience supporting real-world RF geolocation system development or validationExperience with timing and synchronization methods such as GPSDO, PPS, PTP, or equivalentExperience supporting field test, system integration, or customer-facing technical validationResume Submission Name (Required)First LastEmail (Required)PhoneBriefly describe your background and interest in DGS (Required)Are you legally authorized to work lawfully in the U.S.? (Required)Will you now or in the future require sponsorship for employment visa status? (Required)Location (Required)Voluntary Self-Identification Digital Global Systems is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, or protected veteran status. We are committed to providing reasonable accommodations to individuals with disabilities. If you need an accommodation during the application or interview process, please contact DGS.Disability Status – whether you have a disability (Required)Veteran Status – whether you are a protected veteran (Required)Upload resume (Required) Max. file size: 50 MB.Upload CV Max. file size: 50 MB.LinkedIn Profile (URL)CAPTCHAAre you interested in working with DGS but don't see an open job that fits you?Reach out and tell us a little bit about yourself. We're always happy to meet others who are passionate about building next-gen wireless solutions.#J-18808-Ljbffr