{"id":2501628,"url":"https://alion.io/job/viber-ios-rtc-software-engineer","title":"iOS RTC Software Engineer","company":{"id":2594,"name":"Viber","domain":"viber.com","url":"https://alion.io/company/rakuten-viber","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Comeet","truth_index":null},"role":"Mobile","role_family":"Mobile","seniority":null,"employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Warsaw, Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":52000,"max_usd":96000,"period":"year","method":"role_country_seniority_unknown","sample_n":117},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"CallKit","optional":false},{"name":"Java","optional":false},{"name":"Kotlin","optional":false},{"name":"Objective-C","optional":false},{"name":"Python","optional":false},{"name":"Swift","optional":false},{"name":"TCP/IP","optional":false},{"name":"TypeScript","optional":false},{"name":"WebRTC","optional":false}],"status":"live","first_seen_at":"2026-10-09T13:28:37Z","employer_posted_date":"2026-10-09","last_verified_at":"2026-10-14T10:46:06Z","board_verified":true,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"Description\nRakuten Viber is one of the most popular and downloaded apps in the world. Working with us provides a unique opportunity to influence hundreds of millions of our users and to be part of the journey that makes us a super-app. Our mission is to make people’s lives easier by enabling meaningful connections, from precious moments with family and friends, through managing business relationships to pursuing their passions.\nWe invite the iOS developer to the RTC team. Our cross-platform team develops, analyzes and optimizes Viber calls.\nResponsibilities\nWe invite a competent and proactive specialist who knows Swift, Objective-C, C++ that is interested in how the code is executed at the low level. While working with us, he will be engaged in research and development of various aspects of Viber calls on iOS platform:\nWebRTC library integration and fine-tuning\nSignaling protocol development\nMedia capturing and processing optimization\nCPU/traffic/battery consumption optimization\nCalls statistics gathering and analysis.\nWe expect that our candidate knows how to work in a team, carefully thinks out technical solutions, knows how to plan his time, correctly prioritize and needs minimal control.\nRequirements\nDeep knowledge of Swift and Objective-C: OOP, data structures, multithreading, interoperability.\nExperience with WebRTC, iOS CallKit and AVAudioSession.\nUnderstanding how a TCP/IP stack works.\nIntermediate+ level of English.\nAdvantages\nProficiency in C/C++, Java, Kotlin, JS/TypeScript, Bash, Python.","description_format":"text","description_chars":1525,"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":[{"language":"English","level":"All levels","optional":false}]},"benefits":[],"hiring_locations":[{"name":"Poland","iso":"PL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Messaging Apps"],"lifecycle":[{"event":"open","at":"2026-10-14T06:10:50Z"}],"visa":[],"liveness":{"score":84,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.835,"p_room":1,"age_days":4,"expected_fill_days":21,"reasons":["conf:0","win:early"],"computed_at":"2026-10-14T06:34:16Z"},"pay":null,"html_url":"https://alion.io/job/viber-ios-rtc-software-engineer","json_url":"https://alion.io/job/viber-ios-rtc-software-engineer.json","meta":{"generated_at":"2026-10-14T12:01:55Z","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":14550,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-15T00:00:00Z"}},"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":2594},"rest":"https://alion.io/mcp/rest/get_company?id=2594"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fviber-ios-rtc-software-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%2Fviber-ios-rtc-software-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%2Fviber-ios-rtc-software-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/viber-ios-rtc-software-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fviber-ios-rtc-software-engineer"}]}