{"id":2114618,"url":"https://alion.io/job/expinit-inzynier-telekomunikacji","title":"Inżynier Telekomunikacji","company":{"id":4161519,"name":"EXPinIT","domain":"expinit.pl","url":"https://alion.io/company/expinit","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":null,"employment_type":"contractor","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"inferred_payroll_markers","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":["Warsaw, Poland"],"countries":["PL"],"hiring_countries":["PL"],"hiring_countries_total":1,"salary":{"min":22000,"max":24000,"currency":"PLN","period":"month","gross":null,"usd_annual":73680},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Tcpdump","optional":false},{"name":"Wireshark","optional":false}],"status":"live","first_seen_at":"2026-09-23T00:00:00Z","employer_posted_date":null,"last_verified_at":"2026-09-23T00:00:00Z","board_verified":false,"closed_at":null,"days_open":38,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":38},"description":"Zakres odpowiedzialności\nDiagnostyka problemów z połączeniami SIP/VoIP na poziomie całego flow: carrier → SBC/load balancer → serwery telekomunikacyjne → aplikacja/IVR → PSTN.\nAnaliza SIP signaling, RTP i DTMF (RFC 2833/4733) oraz identyfikacja miejsca utraty lub nieprawidłowej obsługi sygnałów.\nPraca z PCAP/Wiresharkiem i korelacja pakietów z konkretnymi Call ID, dialogami SIP i przepływami RTP.\nAnaliza problemów występujących na styku wielu komponentów i systemów, a nie tylko w pojedynczym serwerze.\nDiagnostyka środowisk opartych o OpenSIPS / Kamailio / FreeSWITCH lub technologie o podobnym charakterze.\nWspółpraca z zespołami technicznymi po stronie klienta i operatorów przy zbieraniu dowodów oraz odtwarzaniu problemów.\nPrzygotowywanie technicznych analiz root cause oraz rekomendacji dalszych działań.\nWspieranie porządkowania i standaryzacji istniejącej infrastruktury telekomunikacyjnej.\nIdentyfikowanie ryzyk wynikających z braku standaryzacji, customowych konfiguracji i skryptów oraz historycznie rozwijanej infrastruktury.\nUdział w planowaniu dalszego rozwoju i modernizacji środowiska.\n\nKogo poszukujemy?\nSzukamy osoby, która naprawdę zna telekomunikację i SIP, a nie tylko administrację Linuxem.\n Must have\nbardzo dobra znajomość SIP i architektury VoIP,\npraktyczne doświadczenie z RTP i DTMF,\nbardzo dobra znajomość Wireshark / PCAP / tcpdump,\numiejętność samodzielnego diagnozowania problemów na podstawie packet capture,\ndoświadczenie z OpenSIPS, Kamailio, FreeSWITCH lub podobnymi platformami,\ndobra znajomość Linuxa i sieci,\ndoświadczenie w analizie problemów występujących pomiędzy wieloma systemami,\numiejętność technicznego udowodnienia przyczyny problemu, a nie tylko wskazania potencjalnego miejsca awarii.\nTech stack\nSIP/VoIP, PCAP/Wireshark, OpenSIPS / Kamailio / FreeSWITCH","description_format":"text","description_chars":1807,"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":[],"hiring_locations":[{"name":"Poland","iso":"PL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-08T22:59:03Z"}],"visa":[],"liveness":{"score":20,"band":"cold","label":"Long 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