{"id":4171255,"url":"https://alion.io/job/amphinicy-technologies-5g-ntn-physdr-engineer","title":"5G NTN PHY/SDR Engineer","company":{"id":55771,"name":"Amphinicy Technologies","domain":"amphinicy.com","url":"https://alion.io/company/amphinicy-technologies","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Hardware","role_family":"Hardware","seniority":null,"employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Contern, Luxembourg"],"countries":["LU"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":true,"has_equity":false,"technologies":[{"name":"C++","optional":true},{"name":"Docker","optional":true},{"name":"Git","optional":true},{"name":"Linux","optional":true},{"name":"MATLAB","optional":true},{"name":"Python","optional":true},{"name":"Wireshark","optional":true}],"status":"live","first_seen_at":"2026-11-12T14:49:05Z","employer_posted_date":null,"last_verified_at":"2026-11-12T14:49:05Z","board_verified":false,"closed_at":null,"days_open":0,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":0},"description":"5G-NTN PHY/SDR Engineer \n\nWe are seeking to hire a 5G-NTN PHY/SDR Engineer at Amphinicy Technologies, and who is working on the physical layer (PHY) of a 5G ground segment for Non-Terrestrial Networks (NTN).\n\nYou will modify and develop PHY blocks in an OpenAirInterface-based 5G NR stack so that it works over satellite links. You will also integrate and test the end-to-end system, from the UE through the gNB to the core network, on software-defined radio hardware.\n\nYou will work closely with our DSP architect and a team covering 5G, satellite communications, and system validation. Your focus will be on the impairments a satellite link adds, such as long delay and large Doppler shifts, and the blocks that must handle them, in all layers such as PHY, MAC, RLC, PDCP, and RRC. The goal is a working demonstrator that serves standard 5G NR devices over satellite.\n\nYou will enjoy hands-on work with a real 5G stack and SDR hardware on a 5G-NTN demonstrator, not only simulations, while walking a path to grow from implementation toward PHY design and architecture. At the meeting point of 5G, satellite communications, and real-time signal processing, you will enjoy the close mentoring from experienced DSP and satellite communications engineers. \n\nThe position is based in Luxembourg, with a hybrid working model. \n\nWhat we are looking for\n\nYou hold a BSc or MSc in Telecommunications, Electrical Engineering, or a related field. A PhD is a plus. \n\nYou have at least 2-5 years of hands-on PHY-layer or DSP development for wireless systems.\n\nYou have solid knowledge of digital communications and DSP for OFDM-based systems, such as 5G NR or LTE, including filtering, synchronization, and channel estimation. \n\nYou also have a good understanding of frequency and timing offset estimation and compensation, including Doppler. \n\nYou are versed with C/C++ on Linux, and comfortable working in a large existing codebase. The daily use of Git, including branching, merging, and code review comes natural to you. \n\nWhile you have hands-on experience with USRP or similar SDR platforms, you also know about basic networking: IP, UDP/TCP, Ethernet configuration, and Wireshark. \n\nA working knowledge of MATLAB or Python for prototyping and analysis is expected. \n\nYou work independently, debug problems in a structured way, but also integrate well into a small team. \n\nYou produce clear, well-structured project documentation and reports in excellent English.\n\nWhat is good to know\n\n3GPP NTN features (Release 17 and later), such as timing advance, K_offset, and satellite ephemeris. \n\nThe OpenAirInterface (OAI) or srsRAN codebase, or GNU Radio. \n\nRunning real-time workloads in containers or VMs, such as Docker, CPU pinning, and real-time Linux tuning. \n\nDVB-S2/S2X\n\nWhat we offer\n\nAn attractive salary and relocation package.\n\nA comprehensive training plan, starting with onboarding, which caters to your development needs and helps you achieve your career goals.\n\nA supportive environment where people come first.\n\nFlexible work options, with a certain remote possibility.\n\nAn opportunity to work in a challenging, fast-paced environment with the latest technologies which affect the lives of billions of people around the globe.\n\nWork-life balance which includes an exciting lifestyle in the heart of Europe, in the multicultural city of Luxembourg.\n\nWho we are\n\nAmphinicy Technologies is a leading provider of complex software solutions for the space industry. We have been delivering solutions to the top players and organizations in the satellite and space industry for over 20 years, from our two offices in both Croatia and Luxembourg. Our engineers are leading experts in the domains of Satellite Communication and Earth Observation, and our unending focus is the perpetual improvement of the quality and efficiency of our state-of-the-art solutions in a creative, enjoyable, and supportive work environment.\n\nLuxembourg\n\nLuxembourg is situated at the crossroads of Europe, between Germany, Belgium, and France. Despite its small size, it sports a powerful economy with several well paid and diverse job opportunities, and with long-term career prospects. World-class infrastructure, one of the best healthcare systems in Europe and a vibrant and multicultural nightlife complete the puzzle of one of the best countries to live and work in.\n\nApply\n\nDoes this sound interesting to you? Please send us your questions/CV through the functionality provided here.","description_format":"text","description_chars":4469,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Hybrid work"],"hiring_locations":[{"name":"Luxembourg","iso":"LU","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Ground Systems"],"lifecycle":[{"event":"open","at":"2026-11-12T14:49:05Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":22,"reasons":["seen:0","win:early"],"computed_at":"2026-11-12T16:31:02Z"},"pay":null,"html_url":"https://alion.io/job/amphinicy-technologies-5g-ntn-physdr-engineer","json_url":"https://alion.io/job/amphinicy-technologies-5g-ntn-physdr-engineer.json","meta":{"generated_at":"2026-11-12T16:31:02Z","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_verified","counted_by":"address","units_charged":1,"used_today":34603,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-13T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"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":55771},"rest":"https://alion.io/mcp/rest/get_company?id=55771"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Famphinicy-technologies-5g-ntn-physdr-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":2,"usd":0.2},"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%2Famphinicy-technologies-5g-ntn-physdr-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"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%2Famphinicy-technologies-5g-ntn-physdr-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/amphinicy-technologies-5g-ntn-physdr-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Famphinicy-technologies-5g-ntn-physdr-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":4171255}},{"tool":"search_jobs","arguments":{"company":"amphinicy.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":4171255},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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