{"id":3065649,"url":"https://alion.io/job/greylabs-ai-telephony-engineer","title":"Telephony Engineer","company":{"id":2873,"name":"GreyLabs AI","domain":"greylabs.ai","url":"https://alion.io/company/greylabs-ai","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":"middle","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Bengaluru, India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Go","optional":false},{"name":"LLM","optional":false},{"name":"Python","optional":false},{"name":"Speech Recognition","optional":false},{"name":"Text-to-Speech","optional":false},{"name":"Twilio","optional":false},{"name":"WebRTC","optional":false}],"status":"live","first_seen_at":"2026-10-22T07:35:45Z","employer_posted_date":null,"last_verified_at":"2026-10-22T07:35:45Z","board_verified":false,"closed_at":null,"days_open":3,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":3},"description":"You will build and operate core pieces of GreyLabs AI's Telephony platform - the SIP/WebRTC, PSTN/VoIP, and media-handling layer that every voice call in the product passes through. You'll take features, integrations, and reliability improvements from design through production, working closely with senior engineers who set the platform's architecture. This is a strong role for someone who wants deep, hands-on exposure to real-time communications infrastructure at production scale, with a clear path to owning larger scope as the platform and team grow.\n\nThe candidate will have responsibilities across the following functions: \n\nTechnical Contribution: \nBuild and maintain components of the Telephony service - call initiation and termination, session management, SIP/WebRTC handling, PSTN/VoIP integration, and media processing\nImplement and test integration points between the Telephony platform and the Voice AI layer, including ASR, TTS, and LLM orchestration interfaces\nSupport evaluation and integration work with telephony carriers and CPaaS providers - test call flows, load testing, and cutover validation\nInstrument and monitor call quality metrics (latency, jitter, packet loss, MOS scores), and help build dashboards, alerts, and runbooks\nContribute to failover, redundancy, and disaster-recovery mechanisms for inbound and outbound calling flows, and participate in on-call rotations\n\nPlatform Development: \nBuild and document APIs and internal tooling that let other engineering teams use the Telephony platform without needing deep infrastructure knowledge\nWrite and maintain clear documentation - API references, integration guides, runbooks - as you build features\nHelp track and report progress against platform SLAs for availability, latency, and call success rates\n\nDelivery and Execution: \nOwn well-scoped features and bug fixes end-to-end, from design through production, communicating progress and blockers proactively\nInvestigate and resolve production issues in the telephony stack, documenting root causes and escalating where needed\nParticipate in planning and estimation for the Telephony roadmap\n\nCross-functional Collaboration: \nWork closely with Voice AI engineers to understand integration needs and unblock their use of the platform\nPartner with Infrastructure and DevOps on deployment, scaling, and cost-efficient operation of telephony services\nFollow established practices for call recording consent, data residency, and PII handling in call audio and metadata, and flag gaps as you encounter them\nWork with Security to implement controls required to meet GreyLabs AI's security standards\n\nRequirements: \n3-5 years of experience in Telephony, Real-Time Communications, or VoIP engineering, with hands-on experience building or maintaining a production SIP/WebRTC or PSTN stack.\nWorking knowledge of telephony carriers or CPaaS providers (e. g., Plivo, Twilio, Telnyx, Bandwidth, or equivalents) and the trade-offs between them.\nExperience instrumenting or troubleshooting call quality issues - latency, jitter, packet loss, MOS - using logs, traces, or monitoring tools.\nComfortable debugging real-time voice/media issues in production, and has participated in an on-call rotation for a customer-facing system.\nProficient in Python, Go, or an equivalent language, with solid engineering fundamentals - testing, code review, incremental delivery.\nHas built or consumed platform APIs, with an eye for clear documentation and developer-friendly design.\nExposure to regulated or enterprise B2B environments is a plus - call recording consent, data residency, PII handling, or similar compliance-driven constraints.\nCurious and detail-oriented, comfortable asking questions and working with evolving processes in a fast-moving environment.\nSkills\nBandwidth, Go, PSTN, Plivo, Python, SIP, Telnyx, Twilio, VoIP, WebRTC","description_format":"text","description_chars":3852,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Conversational AI","AI Agents"],"lifecycle":[{"event":"open","at":"2026-10-22T07:35:45Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":2,"expected_fill_days":23,"reasons":["seen:2","win:early"],"computed_at":"2026-10-25T05:49:26Z"},"pay":null,"html_url":"https://alion.io/job/greylabs-ai-telephony-engineer","json_url":"https://alion.io/job/greylabs-ai-telephony-engineer.json","meta":{"generated_at":"2026-10-25T14:57:07Z","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":21559,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-26T00:00:00Z"}},"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":2873},"rest":"https://alion.io/mcp/rest/get_company?id=2873"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fgreylabs-ai-telephony-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%2Fgreylabs-ai-telephony-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%2Fgreylabs-ai-telephony-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/greylabs-ai-telephony-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fgreylabs-ai-telephony-engineer"}]}