{"id":1473589,"url":"https://alion.io/job/rezo-ai-senior-backend-engineer-speech-platform","title":"Senior Backend Engineer - Speech Platform","company":{"id":27698,"name":"Rezo.ai","domain":"rezo.ai","url":"https://alion.io/company/rezo","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Zoho Recruit","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Noida, India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":15500,"max_usd":36000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":168},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"Dagster","optional":false},{"name":"Docker","optional":false},{"name":"GCP","optional":false},{"name":"gRPC","optional":false},{"name":"Java","optional":false},{"name":"Kubernetes","optional":false},{"name":"Python","optional":false},{"name":"Spark","optional":false},{"name":"WebSockets","optional":false},{"name":"C","optional":true},{"name":"FFmpeg","optional":true},{"name":"MLFlow","optional":true},{"name":"TorchServe","optional":true},{"name":"Triton","optional":true},{"name":"vLLM","optional":true},{"name":"Weights & Biases","optional":true}],"status":"live","first_seen_at":"2026-09-28T00:00:00Z","employer_posted_date":"2026-09-28","last_verified_at":"2026-10-26T23:16:04Z","board_verified":true,"closed_at":null,"days_open":29,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":29},"description":"About role: You'll be the engineering owner on the speech team, working alongside two ML engineers and building everything around the models - ingestion, training infrastructure, real-time serving, and the integration into our existing platform. This is a backend engineering role. You don't need to train models. You need to build the systems that make trained models useful in production.Responsibilities: Build the audio data pipeline: mine our call archive, transcode, resample, segment, deduplicate and quality-filter at scale Build and operate real-time inference services with hard latency targets, including streaming, cancellation and mid-utterance interruption Integrate speech services into our existing Java-based platform and telephony infrastructure Instrument the full latency budget end to end and find where the milliseconds go Stand up training infrastructure - GPU scheduling, checkpointing, experiment tracking, reproducibility Own compute cost and concurrency economics: how many simultaneous calls per GPU, and how to improve it Support on-premise deployment for clients who can't send data outside their network\nRequirements Must haves: 3-4 years building and operating production backend systems Strong Java - you've owned services in production, not just contributed to them Working Python - enough to build data pipelines and integrate with ML tooling Real-time or low-latency systems experience: streaming APIs, WebSocket or gRPC streaming, concurrency, backpressure Data pipelines at scale (Airflow, Dagster, Spark or equivalent) Docker and Kubernetes in production Cloud infrastructure (AWS/GCP/Azure) Comfortable debugging performance: profiling, latency percentiles, throughput under load Nice to have: Serving ML models in production (Triton, vLLM, TorchServe) Audio tooling - ffmpeg, sox, codecs, resampling Telephony - SIP, Asterisk/FreeSWITCH, media servers, narrowband codecs MLOps tooling: MLflow, Weights & Biases, DVC GPU-aware infrastructure work","description_format":"text","description_chars":1986,"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","Call Center Services"],"lifecycle":[{"event":"open","at":"2026-09-29T17:51:56Z"}],"visa":[],"liveness":{"score":36,"band":"fade","label":"Fading","p_open":1,"p_active":0.664,"p_room":0.55,"age_days":28,"expected_fill_days":22,"reasons":["conf:1","win:tail"],"computed_at":"2026-10-26T05:57:25Z"},"pay":null,"html_url":"https://alion.io/job/rezo-ai-senior-backend-engineer-speech-platform","json_url":"https://alion.io/job/rezo-ai-senior-backend-engineer-speech-platform.json","meta":{"generated_at":"2026-10-27T02:24:51Z","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":1725,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-28T00:00:00Z"}},"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":27698},"rest":"https://alion.io/mcp/rest/get_company?id=27698"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Frezo-ai-senior-backend-engineer-speech-platform"},{"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%2Frezo-ai-senior-backend-engineer-speech-platform"},{"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%2Frezo-ai-senior-backend-engineer-speech-platform"},{"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/rezo-ai-senior-backend-engineer-speech-platform\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Frezo-ai-senior-backend-engineer-speech-platform"}]}