DevOps / Cloud Architect Kubernetes (Callbot App)

Main Mission

Design, deploy, manage, and optimize the cloud-based Kubernetes infrastructure for a callbot application integrating Asterisk, Python microservices, Redis, ChromaDB, and Whisper. Ensure scalability, security, high availability, and overall performance of the platform.

Key Responsibilities

Infrastructure & Cloud

• Deploy and manage Kubernetes clusters (EKS, GKE, AKS, or self-hosted).

• Provision and maintain cloud resources (VMs, networking, storage, load balancers).

• Configure VPC, subnets, firewall rules, and secure access.

Containerization & Services

• Write and optimize Dockerfiles for all services (Asterisk, Python services, Whisper, Redis, ChromaDB).

• Maintain private container registries (Docker Hub, AWS ECR, GCP Artifact Registry).

• Implement CI/CD pipelines for build and deployment automation.

Kubernetes Orchestration

• Create and maintain manifests (Deployments, Services, ConfigMaps, StatefulSets).

• Deploy and manage Redis clusters with persistence and scalability.

• Configure persistent volumes for Redis, ChromaDB, Whisper models, and audio storage.

• Optionally integrate a service mesh (Istio, Linkerd) for observability and security.

Scalability & Observability

• Configure load balancers for SIP/RTP and HTTP traffic.

• Set up horizontal and vertical pod autoscaling.

• Deploy monitoring and metrics tools (Prometheus, Grafana).

• Integrate centralized logging (ELK/EFK stack).

• Perform system integration and load testing.

Security & Backup

• Enforce RBAC, Network Policies, and Pod Security standards.

• Manage secrets securely (Kubernetes Secrets, Vault).

• Implement backup and disaster recovery strategies (Velero, Redis/ChromaDB snapshots).

• Conduct security audits and resilience testing.

Required Technical Skills

• Cloud Platforms: GCP (preferred), AWS, Azure.

• Orchestration: Kubernetes (EKS, GKE, AKS, or self-hosted clusters).

• Telephony/VoIP: Asterisk in containers, SIP/RTP traffic management.

• Databases & Caching: Redis (cluster mode, persistence), ChromaDB.

• AI/ML: Deployment and optimization of Whisper models.

• DevOps: Docker, CI/CD (GitLab CI, GitHub Actions, ArgoCD).

• Monitoring & Logging: Prometheus, Grafana, ELK/EFK stack.

• Security: RBAC, Network Policies, HashiCorp Vault.

• Backup & Recovery: Velero, snapshots, disaster recovery strategies.

• Networking: Load balancing (NGINX Ingress, cloud LBs), session affinity.