Skit.ai runs autonomous voice agents for regulated enterprises — India's largest banks and telcos, and US collections operations. Every call is a live distributed system: PSTN/SIP → media server → ASR → LLM → TTS → back, spread across three clouds and multiple vendors, with a conversational response budget measured in hundreds of milliseconds.
The platform peaks at roughly **1 million calls per hour**. Billed minutes grew **5,000x+ in eight months**. At this scale, infrastructure is not a support function — latency, cost-per-minute, and auditability are product features. When infra degrades, a customer mid-sentence hears silence.
We're hiring a Lead DevOps Engineer to own this substrate and keep it ahead of the growth curve.
What you'll own:
- Multi-cloud substrate : Production infrastructure across AWS, GCP, and Azure. Private interconnects (Direct Connect, Cloud Interconnect, ExpressRoute), transit/hub-spoke topologies, and cross-cloud latency managed as an explicit budget — p95 per hop in tens of milliseconds, not "best effort."
- Real-time media plane: Self-hosted LiveKit and SIP infrastructure at scale. Media servers are stateful; you'll design session-affine, event-driven autoscaling (KEDA-class) that survives traffic tripling within an hour.
- Model-serving infrastructure : GPU fleets (A100/H100/B200-class) for self-hosted ASR and open-weight LLMs — inference optimization, prefix caching, sticky-session routing, sub-500ms TTFT budgets — alongside managed APIs (Vertex AI/Gemini, Bedrock, Azure). Vendor failover is your design, not your incident.
- Reliability & observability : OTel-native tracing (Grafana/Tempo stack), per-turn latency attribution across telephony/ASR/LLM/TTS, automated incident response and self-healing. You'll act as incident commander for infrastructure and write the runbooks you'd want at 3 a.m.
- Cost engineering : Cost-per-minute is an SLO here. We cut per-minute serving cost ~18x in six months through caching, rightsizing, autoscaling, and workload re-architecture — you'll own the next 10x.
- Security & compliance : Zero Trust across clouds: private endpoints/PrivateLink, IAM/RBAC, secrets management with rotation, WAF/DDoS protection. Operate controls for SOC 2 and ISO/IEC 27001; working command of ISO/IEC 42001:2023 (AI management systems) — hands-on preferred, rigorous theoretical grounding acceptable. You'll face bank and telecom auditors directly, including data-residency requirements.
- Technical leadership : Terraform-first IaC standards, production-readiness reviews, mentoring SREs. "Lead" means you raise the floor of the whole team.
Problems on our plate right now
- Migrating LLM inference from managed APIs to self-hosted open-weight models on GPUs without breaking TTFT budgets
- ASR, LLM, and telephony living in different clouds: interconnect topology that keeps the packet path short and private
- Multi-region DR that satisfies bank audits without doubling spend
If these read as interesting rather than terrifying, keep reading.
Must-have
- 6+ years hands-on cloud infrastructure; 3+ years operating multiple clouds simultaneously in production; deep expertise in at least two of AWS/GCP/Azure
- Real-time audio/video systems in production — WebRTC, SIP/PSTN, or streaming media; you've debugged jitter, not just read about it
- Networking depth: VPC/VNet design, load balancing, DNS, NAT; private connectivity (Direct Connect / Cloud Interconnect / ExpressRoute, PrivateLink / Private Service Connect); transit gateways and cross-cloud mesh
- Kubernetes at scale (EKS/GKE/AKS), Helm, and scaling *stateful* workloads; service mesh familiarity (Istio/Linkerd)
- Infrastructure as Code: Terraform (non-negotiable) across multi-account/multi-project estates; drift is a bug
- AI/ML serving in production: GPU allocation and scheduling, inference servers or serverless GPU platforms (vLLM / Triton / Modal / Baseten-class), streaming protocols (WebRTC, WebSocket, gRPC)
- Production STT/TTS/LLM API operations: streaming integrations, quota management, multi-vendor failover (Deepgram / Google / Azure / Whisper-class ASR; ElevenLabs / Azure-class TTS)
- Security fundamentals: IAM/RBAC, secrets management (Vault or cloud-native), encryption and key rotation
- CI/CD: GitHub Actions or GitLab CI with security scanning integrated into the pipeline
Strong signal (nice-to-have)
- LiveKit, pipecat, Twilio, or comparable real-time platforms; SIP trunking and PSTN integration
- KEDA or other event-driven autoscaling used in anger
- MLOps: model versioning, canary and A/B rollout
- FinOps discipline: reserved/spot strategy, unit-economics reporting
- Certifications: AWS SA Professional, GCP Professional Cloud Architect, Azure Solutions Architect Expert
- ISO/IEC 42001:2023 exposure
What we're NOT looking for
- Single-cloud depth with documentation-level knowledge of the other two
- Tool-checklist DevOps without production AI/ML serving scars
- "Can learn quickly" as the primary qualification — this role needs day-one production credibility
- Anyone who has never traced a packet across a cloud boundary