{"id":41556,"url":"https://alion.io/job/zendesk-senior-backend-software-engineer-solve-voice","title":"Senior Backend Software Engineer, Solve Voice","company":{"id":369,"name":"Zendesk","domain":"zendesk.com","url":"https://alion.io/company/zendesk","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"A","score":85,"open_postings":29,"ghost_share":0,"stale_share":0.586,"repost_share":0,"time_to_fill_p50_days":27,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Austin, United States","San Francisco, United States","Madison, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":145000,"max":217000,"currency":"USD","period":"year","gross":null,"usd_annual":217000},"salary_estimate":null,"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Python","optional":false},{"name":"WebRTC","optional":false},{"name":"WebSockets","optional":false},{"name":"Speech Recognition","optional":true},{"name":"Text-to-Speech","optional":true}],"status":"live","first_seen_at":"2026-08-04T00:00:00Z","employer_posted_date":"2026-08-04","last_verified_at":"2026-10-18T07:56:28Z","board_verified":true,"closed_at":null,"days_open":75,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":75},"description":"Job Description\nSenior Full Stack Engineer, Solve Voice\nJoin us at Zendesk, where we're on a mission to power exceptional service for every person on the planet. We're accelerating that ambition by building products rooted in AI, automation, and intelligent customer experiences, because behind every interaction lies an opportunity to make a human connection.\nWe’re seeking a Senior Full Stack Engineer to build the real-time voice AI product that makes live conversations feel natural and reliable. Your work will reduce latency, improve conversation flow, and make voice interactions an effective channel for AI-driven support.\nWhat you’ll be doing\nDesign and implement backend services powering real-time voice conversations, focusing on latency, reliability, and observability.\n\nBuild integrations for telephony, WebRTC, real-time audio processing, and external AI/speech services.\n\nShip end-to-end product features across backend systems and user-facing web experiences when required.\n\nImprove platform reliability and performance: monitoring, tracing, autoscaling, and failure recovery.\n\nAddress real-time interaction challenges such as turn-taking, interruptions, responsiveness, and graceful handoff to humans.\n\nPartner with product and design to deliver voice experiences that feel polished and human.\n\nWhat you bring to the role\nSolid backend fundamentals with experience designing APIs, async systems, and scalable integrations.\n\nHands-on experience with real-time systems (WebRTC, WebSockets) or telephony protocols.\n\nProduct-driven engineering mindset - you ship user-facing features and care about UX quality.\n\nAbility to debug and optimize latency and reliability issues in production systems.\n\nEnjoys cross-functional collaboration with product, design, and ML/speech teams.\n\nBasic qualifications\n3+ years building production software, with significant backend engineering experience.\n\nExperience with real-time or event-driven systems (WebRTC, SIP, streaming APIs).\n\nProficiency in Python or equivalent backend languages and async architectures.\n\nPreferred qualifications\nExperience with telephony stacks, SIP, media servers, or speech/ASR/TTS integrations.\n\nFamiliarity with LLMs, speech models, or conversational AI production infrastructure.\n\nExperience on fullstack teams shipping both backend and frontend user experiences.\n\nExpertise in diagnosing performance and reliability issues under real-time constraints.\n\nThe US annualized base salary range for this position is $145,000.00-$217,000.00. This position may also be eligible for bonus, benefits, or related incentives. While this range reflects the minimum and maximum value for new hire salaries for the position across all US locations, the offer for the successful candidate for this position will be based on job related capabilities, applicable experience, and other factors such as work location. Please note that the compensation details listed in US role postings reflect the base salary only (or OTE for commissions based roles), and do not include bonus, benefits, or related incentives.The intelligent heart of customer experience\nZendesk software was built to bring a sense of calm to the chaotic world of customer service. Today we power billions of conversations with brands you know and love.\nZendesk believes in offering our people a fulfilling and inclusive experience. Our hybrid way of working, enables us to purposefully come together in person, at one of our many Zendesk offices around the world, to connect, collaborate and learn whilst also giving our people the flexibility to work remotely for part of the week.\nAs part of our commitment to fairness and transparency, we inform all applicants that artificial intelligence (AI) or automated decision systems may be used to screen or evaluate applications for this position, in accordance with Company guidelines and applicable law.\nZendesk is an equal opportunity employer, and we’re proud of our ongoing efforts to foster global diversity, equity, & inclusion in the workplace. Individuals seeking employment and employees at Zendesk are considered without regard to race, color, religion, national origin, age, sex, gender, gender identity, gender expression, sexual orientation, marital status, medical condition, ancestry, disability, military or veteran status, or any other characteristic protected by applicable law. We are an AA/EEO/Veterans/Disabled employer. If you are based in the United States and would like more information about your EEO rights under the law, please click here.\nZendesk endeavors to make reasonable accommodations for applicants with disabilities and disabled veterans pursuant to applicable federal and state law. If you are an individual with a disability and require a reasonable accommodation to submit this application, complete any pre-employment testing, or otherwise participate in the employee selection process, please send an e-mail to  with your specific accommodation request.","description_format":"text","description_chars":5003,"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":["Equity"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["CRM Software","Customer Support & Help Desk Software"],"lifecycle":[{"event":"open","at":"2026-08-04T00:00:00Z"}],"visa":[],"liveness":{"score":10,"band":"cold","label":"Long shot","p_open":1,"p_active":0.369,"p_room":0.28,"age_days":74,"expected_fill_days":27,"reasons":["conf:0","stale_co","velocity","win:tail","crowd:brand"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":217000,"is_top_pay":true},"html_url":"https://alion.io/job/zendesk-senior-backend-software-engineer-solve-voice","json_url":"https://alion.io/job/zendesk-senior-backend-software-engineer-solve-voice.json","meta":{"generated_at":"2026-10-18T11:56:34Z","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":17817,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-19T00:00:00Z"}},"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":369},"rest":"https://alion.io/mcp/rest/get_company?id=369"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fzendesk-senior-backend-software-engineer-solve-voice"},{"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%2Fzendesk-senior-backend-software-engineer-solve-voice"},{"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%2Fzendesk-senior-backend-software-engineer-solve-voice"},{"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/zendesk-senior-backend-software-engineer-solve-voice\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fzendesk-senior-backend-software-engineer-solve-voice"}]}