{"id":1736368,"url":"https://alion.io/job/ericsson-sr-modem-firmware-engineer","title":"Sr Modem Firmware Engineer","company":{"id":56456,"name":"Ericsson","domain":"ericsson.com","url":"https://alion.io/company/ericsson","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Eightfold","truth_index":{"grade":"B","score":75,"open_postings":69,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":27,"computed_at":"2026-10-06T05:45:30Z"}},"role":"Hardware","role_family":"Hardware","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["San Diego, United States","Santa Clara, United States","Boise, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":191000,"max":null,"currency":"USD","period":"year","gross":null,"usd_annual":191000},"salary_estimate":null,"experience_years_min":4,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"Linux","optional":false},{"name":"VPN","optional":true}],"status":"live","first_seen_at":"2026-05-19T09:48:49Z","employer_posted_date":"2026-10-02","last_verified_at":"2026-10-06T18:27:04Z","board_verified":true,"closed_at":null,"days_open":140,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":139},"description":"Grow with us\nEricsson Inc. does not sponsor U.S work authorizations for this job position including U.S. immigration filings for initial and/or change of employer paperwork for H-1’s, H-1B1’s, E-3’s, O-1’s, and TN’s. Ericsson also does not hire F-1’s working on CPT or EAD for this position. Location Priority is for Boise, ID and Santa Clara, CA\nAbout this opportunity\nJoin Ericsson as a Senior Modem Firmware Engineer based in the USA, where you will design, develop, and integrate cellular modem modules into OpenWrt-based platforms. You will own the end-to-end modem stack - spanning kernel drivers, user-space daemons, and network configuration - to deliver reliable connectivity, seamless failover, and optimal throughput across 5G cellular networks.\nWhat you will do\nIntegrate 5G modem modules into OpenWrt-based router and gateway platforms\nDevelop and maintain kernel drivers for modem communication interfaces (USB, PCIe)\nImplement and optimize QMI/RMNET/AT command interfaces for modem control\nConfigure network interfaces, routing policies, and failover mechanisms\nImplement connection management daemons for automatic reconnection and band selection\nIntegrate SMS, GPS/GNSS, and voice functionality where applicable\nOptimize data throughput and reduce latency across modem interfaces\nPerform modem firmware updates (FOTA) and version management\nDebug connectivity issues across the full stack (RF, baseband, driver, user-space)\nCollaborate with hardware teams on antenna design validation and RF performance\nCreate integration documentation and developer guides\nThe skills you bring\n4+ years in embedded Linux development; 2+ years with OpenWrt or similar distributions\n2+ years integrating cellular modems (preferred: 5+ years across multiple chipset vendors)\nLinux kernel development: driver development, device tree, kernel modules\nOpenWrt/LEDE build system and package development\nCellular modem integration: QMI, RMNET, AT commands\nUSB/PCIe modem interface drivers\nC/C++ programming for embedded Linux systems\nCross-compilation toolchains and embedded build systems\nBachelor’s degree in Electrical Engineering, Computer Engineering, Computer Science, or related field (Master’s preferred)\nNice to have: experience with Qualcomm SDX-series modules, Quectel/Telit modules, ModemManager, VPN integration (WireGuard, OpenVPN, IPsec), eSIM/eUICC provisioning, or multi-WAN failover (mwan3)\nWhy join Ericsson?\nAt Ericsson, you´ll have an outstanding opportunity. The chance to use your skills and imagination to push the boundaries of what´s possible. To build solutions never seen before to some of the world’s toughest problems. You´ll be challenged, but you won’t be alone. You´ll be joining a team of diverse innovators, all driven to go beyond the status quo to craft what comes next.\nWhat happens once you apply?\nClick Here to find all you need to know about what our typical hiring process looks like.\nEricsson uses a merit-based hiring approach that values people with different experiences, perspectives and skillsets. We truly believe this approach drives innovation, which is essential for our future growth. We encourage people from all backgrounds to apply and realize their full potential as part of our Ericsson team. Ericsson is proud to be an Equal Opportunity employer, learn more.\nIf you need assistance or to request an accommodation due to a disability, please contact Ericsson at .\nDISCLAIMER: The above statements are intended to describe the general nature and level of work being performed by employees in this position. They are not an exhaustive list of all responsibilities, duties and skills required for this position, and you may be required to perform additional job tasks as assigned.\nPrimary country and city: United States (US) || Boise (ID) (Country/ City)\nJob details: Developer\nCompensation and Benefits at Ericsson\nAt Ericsson, we know that our people are the key to our success. We offer a competitive package to help with your individual needs and goals.\nYour Pay\nThe salary range for this position is dependent on various factors including, but not limited to, location, and the candidate’s combination of job-related knowledge, qualifications, skills, education, training, and experience.\nSanta Clara $191,000-239,000k\nShort-Term Variable Compensation Plan: Your pay also includes the opportunity for an annual bonus. Actual bonus payouts are based on performance of the business against the unit’s objectives, individual performance, and the individual bonus target. Certain eligibility and pro-ration rules apply.\nYour Health\nEricsson Enterprise Wireless Solutions offers excellent, competitive employee benefits, such as: subsidized, nationwide PPO medical benefit options including a low-deductible Point of Service Plan and a qualifying High Deductible Health Plan (HDHP), with a generous company-provided HSA contribution. For California employees, we offer a subsidized HMO option through Kaiser. Ericsson Enterprise Wireless Solutions also offers subsidized dental and vision coverage.\nYour Financial Security\nWe invest in both your short and long-term financial wellbeing. Our 401(k) plan has a 4% company match and immediate vesting. Employees will also receive company-paid employee basic life and AD&D insurance and company-paid disability benefits.\nYour Time\nYour work-life balance is important to us. New employees are provided a minimum of 15 days of accrued vacation, up to 3 personal days per year, 11 annual holidays, 8 hours of volunteer time, and 80 hours of sick time annually. Please note paid time off is pro-rated based on the employee’s start date. Furthermore, Ericsson provides up to 16 weeks of paid maternity leave and 6 weeks of parental or adoption leave at 100% of pay.\nAdditional Benefits\nEricsson Enterprise Wireless Solutions offers other company-paid benefits such as a comprehensive Employee Assistance Program, mobile therapy, and volunteer paid time off.","description_format":"text","description_chars":5979,"description_truncated":false,"requirements":{"experience_years_min":4,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":true},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Mobile Networks","Telecom Infrastructure","Network Equipment"],"lifecycle":[{"event":"open","at":"2026-10-03T01:10:14Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 85 · green card filings: 3","filings_12m":85,"filings_prev_12m":176,"green_card_filings_12m":3,"median_offered_wage_usd":122159,"route":null,"cap_exempt":false,"checked_at":"2026-10-03T21:08:04+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":21}],"liveness":{"score":6,"band":"cold","label":"Long shot","p_open":1,"p_active":0.217,"p_room":0.28,"age_days":139,"expected_fill_days":27,"reasons":["conf:1","stale_co","velocity","win:tail","crowd:brand"],"computed_at":"2026-10-06T05:45:30Z"},"pay":{"stated_usd_annual":191000,"is_top_pay":false},"html_url":"https://alion.io/job/ericsson-sr-modem-firmware-engineer","json_url":"https://alion.io/job/ericsson-sr-modem-firmware-engineer.json","meta":{"generated_at":"2026-10-06T21:07:19Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":450,"day_limit":5000,"remaining_today":4550,"minute_limit":60,"resets_at":"2026-10-07T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":56456},"rest":"https://alion.io/mcp/rest/get_company?id=56456"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fericsson-sr-modem-firmware-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fericsson-sr-modem-firmware-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fericsson-sr-modem-firmware-engineer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/ericsson-sr-modem-firmware-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fericsson-sr-modem-firmware-engineer"}]}