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Urgent! Senior Python Developer - FastAPI/Flask Job Opening In Hyderabad – Now Hiring Orange Shark

Senior Python Developer FastAPI/Flask



Job description

<p><p><b>Senior Python Developer Voice AI, Telephony & Real-Time Systems</b><br/><br/><b>About the Role : </b><br/><br/>We are building an AI receptionist and ambient assistant platform that answers and routes calls, books appointments, summarizes conversations, and provides real-time help inside calls.

Youll design and ship backend services and real-time pipelines that power appointment scheduling, voice AI (ASR/TTS/LLM), transcripts & summaries, ambient assistance, vertical solutions (medical, property management, legal), third-party integrations (e.g., Toast, Jobber), and AI-assisted callflows.<br/><br/><b>What Youll Do : </b><br/><br/><b>Real-time voice/telephony services : </b><br/><br/>- Build Python microservices (FastAPI) for call control, presence, and routing.<br/><br/></p><p>- Implement SIP/WebRTC/RTP signaling & media handling, conference control, and callflow orchestration.<br/><br/></p><p>- Create low-latency streaming ASR pipelines and TTS playback; manage VAD, diarization, barge-in.<br/><br/><b>AI assistants & conversation intelligence : </b><br/><br/>- Integrate ASR/TTS/STT vendors (Whisper/Deepgram/Google/OpenAI, etc.) and LLMs.<br/><br/></p><p>- Ship summarization, action-item extraction, and RAG over knowledge bases/Content.<br/><br/></p><p>- Implement prompt safety, guardrails, evaluations, and fallbacks.<br/><br/><b>Appointment scheduling & personal assistant features : </b><br/><br/>- Build booking flows with Google/Microsoft calendars, availability, buffers, reminders, time zones.<br/><br/></p><p>- Capture/relay messages, human escalation, policy-based routing and SLAs.<br/><br/><b>Ambient assistance in live calls : </b><br/><br/>- Join/leave wake phrases; real-time IM/notes; add/remove participants; read knowledge on demand.<br/><br/><b>Vertical & partner integrations : </b><br/><br/>- Adapt flows for healthcare (HIPAA-aware intake, reminders), property management (tenant issues), and legal (intake & scheduling).<br/><br/></p><p>- Integrate with third parties such as Toast and Jobber via APIs/webhooks.<br/><br/><b>Platform engineering : </b><br/><br/>- Design resilient, observable systems (OpenTelemetry), queues/streams (Celery/Redis/Kafka), and data stores (Postgres/MySQL/Redis/Elastic/Vector DB).<br/><br/></p><p>- Own CI/CD, test coverage (pytest), load/soak testing, and production readiness.<br/><br/></p><p>- Collaborate with Product, QA, and Ops for staged rollouts and SLO- driven operations (latency, accuracy, uptime).<br/><br/><b>Must-Have Qualifications : </b><br/><br/>- 3 to 10 years professional Python experience building production backends/microservices (FastAPI/Flask).<br/><br/></p><p>- Real-time systems : streaming I/O (websockets/gRPC), asyncio concurrency, low-latency design.<br/><br/></p><p>- Voice AI : integrated at least one ASR and TTS provider and orchestrated LLM calls; built summaries/transcripts at scale.<br/><br/></p><p>- Data & infra : SQL schema design (MySQL), caching (Redis), queues (Celery/Kafka), containerization (Docker), cloud deployment (AWS/GCP/Azure).<br/><br/></p><p>- Testing & observability : pytest, contract tests, performance profiling, Security & compliance mindset : secrets management, PII handling, auditability; awareness of HIPAA/PCI/SOC2 controls.<br/><br/><b>Nice-to-Have : </b><br/><br/>- Telephony/RTC : hands-on with SIP/WebRTC/RTP, media servers/gateways conferencing, DTMF, transfers.<br/><br/></p><p>- LLM ops : prompt/version management, eval harnesses, cost/latency tuning, vector DBs NLU/NLP pipelines (spaCy), structured outputs with Pydantic, Calendar & booking APIs (Google/Microsoft), CRM/Helpdesk (Salesforce, HubSpot, Zendesk).<br/><br/></p><p>- Event-driven design (outbox, idempotency, saga) and blue/green or canary rollouts.<br/><br/></p><p>- Frontend familiarity (TypeScript/React) to collaborate on operator consoles.<br/><br/><b>Tech Stack : </b><br/><br/>- Python 3.11+, FastAPI, Pydantic, asyncio; WebSockets/gRPC; SIP/WebRTC/RTP; Asterisk/FreeSWITCH/Janus/OpenSIPS; Redis, Postgres/MySQL, Kafka; Docker, Kubernetes;, Terraform; OpenTelemetry, Grafana; pytest.<br/><br/><b>Soft Skills : </b><br/><br/>- Bias to action, clear written and verbal communication, production pragmatism.<br/><br/></p><p>- Partner-friendly mindset for vertical integrations.<br/><br/></p><p>- Cross-functional collaboration with Ops/QA/Product and customer-facing teams.</p><br/></p> (ref:hirist.tech)


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