{"schemaVersion":"jobsearcher.job.v1","id":"da27e6e74c2c5839bb36ade2","url":"https://jobsearcher.com/jobs/da27e6e74c2c5839bb36ade2","canonicalUrl":"https://jobsearcher.com/jobs/da27e6e74c2c5839bb36ade2","title":"Backend Software Engineer, (Mid-Level)","description":"Digital Global Systems is seeking a Backend Software Engineer to own and evolve the Target Tracker service within the CLEARSITE™ platform. This role is responsible for persistent target identity, association logic, decoder integration, and migration of legacy tracking systems to a modern, scalable backend architecture.\r\nThe engineer will build low-latency services that maintain continuous target tracking across sessions, protocols, and observation gaps using decoded identifiers and RF fingerprint matching.\r\nKey Responsibilities\r\nDesign and implement the Target Tracker Service, including: Dual-path association using decoded identifiers (Wi-Fi MAC, BLE) and RF fingerprint similarity\r\nTrack lifecycle management (candidate, active, timeout, split/merge)\r\nBuild and maintain REST APIs with strict latency SLOs (sub-20ms update paths)\r\nImplement persistent storage using MySQL and long-term archival in ClickHouse\r\nDevelop composite fingerprint matching algorithms with policy-weighted similarity scoring\r\nLead legacy system migration efforts, including dual-write, backfill, cutover, and rollback\r\nIntegrate tracking services with signal processors, decoders, and image-based detectors\r\nSupport onboarding of new protocol decoders (Wi-Fi, BLE, LoRa, LTE)\r\nMaintain high-quality test coverage and performance validation\r\nRequired Qualifications\r\n3+ years backend development experience (Python, FastAPI)\r\nExperience building low-latency REST APIs\r\nFamiliarity with data migration strategies and real-time pipelines\r\nSolid testing practices (pytest, integration, performance)\r\nPreferred Qualifications\r\nExperience with ClickHouse or columnar databases\r\nBackground in entity resolution, tracking systems, or identity matching\r\nFamiliarity with RF signal metadata or protocol decoding\r\nExperience with production legacy system migrations\r\nResume Submission Name (Required)\r\nFirst Last\r\nEmail (Required)\r\nPhone\r\nBriefly describe your background and interest in DGS (Required) 0 of 500 max characters\r\nAre you legally authorized to work lawfully in the U.S.? (Required)\r\nWill you now or in the future require sponsorship for employment visa status? (Required)\r\nLocation (Required)\r\nVoluntary 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.\r\nDisability Status – whether you have a disability (Required)\r\nVeteran Status – whether you are a protected veteran (Required)\r\nUpload resume (Required) Max. file size: 50 MB.\r\nUpload CV Max. file size: 50 MB.\r\nLinkedIn Profile (URL)\r\nCAPTCHA\r\nAre you interested in working with DGS but don't see an open job that fits you?\r\nReach 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.\r\nJ-18808-Ljbffr","company":"Digital Global Systems","rawCompany":"digital global systems","city":"McLean","state":"VA","isRemote":false,"isActive":false,"createdAt":"2026-06-25T01:21:37.144Z","occupations":[{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1211.00","title":"Computer Systems Analysts","slug":"computer-systems-analysts"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Backend Software Engineer, (Mid-Level)","description":"Digital Global Systems is seeking a Backend Software Engineer to own and evolve the Target Tracker service within the CLEARSITE™ platform. This role is responsible for persistent target identity, association logic, decoder integration, and migration of legacy tracking systems to a modern, scalable backend architecture.\r\nThe engineer will build low-latency services that maintain continuous target tracking across sessions, protocols, and observation gaps using decoded identifiers and RF fingerprint matching.\r\nKey Responsibilities\r\nDesign and implement the Target Tracker Service, including: Dual-path association using decoded identifiers (Wi-Fi MAC, BLE) and RF fingerprint similarity\r\nTrack lifecycle management (candidate, active, timeout, split/merge)\r\nBuild and maintain REST APIs with strict latency SLOs (sub-20ms update paths)\r\nImplement persistent storage using MySQL and long-term archival in ClickHouse\r\nDevelop composite fingerprint matching algorithms with policy-weighted similarity scoring\r\nLead legacy system migration efforts, including dual-write, backfill, cutover, and rollback\r\nIntegrate tracking services with signal processors, decoders, and image-based detectors\r\nSupport onboarding of new protocol decoders (Wi-Fi, BLE, LoRa, LTE)\r\nMaintain high-quality test coverage and performance validation\r\nRequired Qualifications\r\n3+ years backend development experience (Python, FastAPI)\r\nExperience building low-latency REST APIs\r\nFamiliarity with data migration strategies and real-time pipelines\r\nSolid testing practices (pytest, integration, performance)\r\nPreferred Qualifications\r\nExperience with ClickHouse or columnar databases\r\nBackground in entity resolution, tracking systems, or identity matching\r\nFamiliarity with RF signal metadata or protocol decoding\r\nExperience with production legacy system migrations\r\nResume Submission Name (Required)\r\nFirst Last\r\nEmail (Required)\r\nPhone\r\nBriefly describe your background and interest in DGS (Required) 0 of 500 max characters\r\nAre you legally authorized to work lawfully in the U.S.? (Required)\r\nWill you now or in the future require sponsorship for employment visa status? (Required)\r\nLocation (Required)\r\nVoluntary 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.\r\nDisability Status – whether you have a disability (Required)\r\nVeteran Status – whether you are a protected veteran (Required)\r\nUpload resume (Required) Max. file size: 50 MB.\r\nUpload CV Max. file size: 50 MB.\r\nLinkedIn Profile (URL)\r\nCAPTCHA\r\nAre you interested in working with DGS but don't see an open job that fits you?\r\nReach 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.\r\nJ-18808-Ljbffr","datePosted":"2026-06-25T01:21:37.144Z","dateModified":"2026-06-25T01:21:37.144Z","hiringOrganization":{"@type":"Organization","name":"Digital Global Systems","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"McLean","addressRegion":"VA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"da27e6e74c2c5839bb36ade2"},"url":"https://jobsearcher.com/jobs/da27e6e74c2c5839bb36ade2"}}