{"schemaVersion":"jobsearcher.job.v1","id":"52a46b6557e60e854a814344","url":"https://jobsearcher.com/jobs/52a46b6557e60e854a814344","canonicalUrl":"https://jobsearcher.com/jobs/52a46b6557e60e854a814344","title":"Sr. Embedded Developer","description":"Sr. Embedded DeveloperEnglewood, CO - onsiteEmbedded C Programming, Linux, Operating System (10+ years)WiFi standards and Networking Domain Expertise (10+ years), basic understanding of 5G/LTE technology (high level)Strong debugging and problem solving skills (10+ years)Prior experience working with networking devices such as wifi routers, cable modems, CMTS etc. will be beneficial. Hands on experience working with Opensync, OpenWRT, RDK-B etc. will be an advantage.WiFi IntegrationDevelop and maintain WiFi radio configuration across Qualcomm, Broadcom, and Atheros chipsets for 2.4GHz, 5GHz, and 6GHz bandsImplement and debug WiFi features including band steering, client steering, channel selection (Client/non-Client), BSS Coloring, OFDMA, MU-MIMO, TWT, and MLO (WiFi 7)Work with hostapd/wpa_supplicant configuration, CFG80211/mac80211/nl80211 driver interfacesDevelop and maintain OpenSync WiFi managers for cloud-managed radio configuration, client monitoring, and statistics reportingDebug WiFi driver crashes, firmware asserts, performance regressions, and interoperability issues across client devicesImplement mesh/extender backhaul configuration and optimizationDevelop and tune RvR (Rate vs Range) and throughput KPIs across firmware buildsSupport channel switching, ECSA, radar detection (Client), and regulatory compliance across multiple country codesCellular Backup (Phone-as-Backhaul)Implement phone-as-backhaul connectivity - enabling the router to use the customer's mobile device as a backup WAN pathDevelop the router-side failover client that communicates with the companion mobile app (MSA) to initiate and terminate backup sessionsImplement WAN outage detection and internet reachability healthcheck frameworkDevelop route arbitration and traffic steering logic between primary WAN and phone-based cellular backupManage concurrent WiFi AP + STA operation - serving home clients on AP while connected to phone hotspot as upstream STAHandle USB tethering detection and network interface management (RNDIS/CDC-NCM/CDC-ECM)Implement graceful failback logic when primary WAN recoversDevelop LED state machine logic for multi-WAN connectivity status indicationImplement QoS and bandwidth management during cellular backup mode (customer's data plan awareness)Platform & CommonDesign, develop, and debug embedded C software for Linux-based residential gateway platforms (ARM/MIPS SoC)Develop and maintain OpenSync managers - event-driven daemons that interact with OVSDB for cloud-managed configuration and state reportingImplement secure communication channels using TLS with mutual authentication (mTLS) between router and cloud/mobile appDebug kernel-level issues including network driver crashes, kernel panics, and memory leaksDevelop init scripts, UCI configuration handlers, and persistent storage management for OpenWrtAnalyze and resolve field issues using device logs, crash dumps, logpull analysis, and remote diagnosticsWrite unit tests and participate in code reviews via GitLab merge requestsCollaborate with hardware teams, QA, cloud platform engineers, mobile app teams, and service provider partners","company":"Apolis","rawCompany":"apolis","city":"Centennial","state":"CO","isRemote":false,"isActive":false,"createdAt":"2026-10-02T13:32:51.998Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1244.00","title":"Network and Computer Systems Administrators","slug":"network-and-computer-systems-administrators"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"517112","title":"Wireless Telecommunications Carriers (except Satellite)","slug":"wireless-telecommunications-carriers-except-satellite"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Sr. Embedded Developer","description":"Sr. Embedded DeveloperEnglewood, CO - onsiteEmbedded C Programming, Linux, Operating System (10+ years)WiFi standards and Networking Domain Expertise (10+ years), basic understanding of 5G/LTE technology (high level)Strong debugging and problem solving skills (10+ years)Prior experience working with networking devices such as wifi routers, cable modems, CMTS etc. will be beneficial. Hands on experience working with Opensync, OpenWRT, RDK-B etc. will be an advantage.WiFi IntegrationDevelop and maintain WiFi radio configuration across Qualcomm, Broadcom, and Atheros chipsets for 2.4GHz, 5GHz, and 6GHz bandsImplement and debug WiFi features including band steering, client steering, channel selection (Client/non-Client), BSS Coloring, OFDMA, MU-MIMO, TWT, and MLO (WiFi 7)Work with hostapd/wpa_supplicant configuration, CFG80211/mac80211/nl80211 driver interfacesDevelop and maintain OpenSync WiFi managers for cloud-managed radio configuration, client monitoring, and statistics reportingDebug WiFi driver crashes, firmware asserts, performance regressions, and interoperability issues across client devicesImplement mesh/extender backhaul configuration and optimizationDevelop and tune RvR (Rate vs Range) and throughput KPIs across firmware buildsSupport channel switching, ECSA, radar detection (Client), and regulatory compliance across multiple country codesCellular Backup (Phone-as-Backhaul)Implement phone-as-backhaul connectivity - enabling the router to use the customer's mobile device as a backup WAN pathDevelop the router-side failover client that communicates with the companion mobile app (MSA) to initiate and terminate backup sessionsImplement WAN outage detection and internet reachability healthcheck frameworkDevelop route arbitration and traffic steering logic between primary WAN and phone-based cellular backupManage concurrent WiFi AP + STA operation - serving home clients on AP while connected to phone hotspot as upstream STAHandle USB tethering detection and network interface management (RNDIS/CDC-NCM/CDC-ECM)Implement graceful failback logic when primary WAN recoversDevelop LED state machine logic for multi-WAN connectivity status indicationImplement QoS and bandwidth management during cellular backup mode (customer's data plan awareness)Platform & CommonDesign, develop, and debug embedded C software for Linux-based residential gateway platforms (ARM/MIPS SoC)Develop and maintain OpenSync managers - event-driven daemons that interact with OVSDB for cloud-managed configuration and state reportingImplement secure communication channels using TLS with mutual authentication (mTLS) between router and cloud/mobile appDebug kernel-level issues including network driver crashes, kernel panics, and memory leaksDevelop init scripts, UCI configuration handlers, and persistent storage management for OpenWrtAnalyze and resolve field issues using device logs, crash dumps, logpull analysis, and remote diagnosticsWrite unit tests and participate in code reviews via GitLab merge requestsCollaborate with hardware teams, QA, cloud platform engineers, mobile app teams, and service provider partners","datePosted":"2026-10-02T13:32:51.998Z","dateModified":"2026-10-02T13:32:51.998Z","hiringOrganization":{"@type":"Organization","name":"Apolis","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Centennial","addressRegion":"CO","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"52a46b6557e60e854a814344"},"url":"https://jobsearcher.com/jobs/52a46b6557e60e854a814344"}}