Freelance Senior Kubernetes Reliability

3 weeks ago

India ThreatXIntel Full time
Company Description

ThreatXIntel is a startup cyber security company dedicated to protecting businesses and organizations from cyber threats. The company offers services including cloud security, web and mobile security testing, cloud security assessment, DevSecOps, and more. ThreatXIntel takes a proactive approach to security, continuously monitoring and testing clients' digital environments to identify vulnerabilities before they can be exploited.

Role Description

We are looking for a senior-level freelance engineer to ensure platform reliability and design a policy-driven traffic enforcement layer for our Kubernetes-hosted Secure Access Service Edge (SASE) platform. This role will focus on achieving high availability, deep observability, and fair multi-tenant performance across distributed ingress points and cloud-native workloads.

Responsibilities

- Own platform stability, uptime, and SLA attainment across multi-region Kubernetes environments.
- Design fault-tolerant Kubernetes architectures with automated scaling, disaster recovery, and change management.
- Build and operate a complete observability stack (Prometheus, Grafana, OpenTelemetry, Jaeger, Loki) including golden signal monitoring, distributed tracing, and automated remediation.
- Develop a Kubernetes-native traffic control plane with dynamic per-tenant/session/bandwidth enforcement using CRDs, custom controllers, and Cilium.
- Optimize network policy enforcement, integrate telemetry pipelines, and operate a service mesh (Istio or Linkerd) for secure traffic routing.
- Automate cluster operations with GitOps workflows (Helm, ArgoCD, Flux, Terraform) and implement FinOps practices for cost optimization.

Required Skills & Experience

- 5+ years managing production Kubernetes environments with 99.9%+ availability.
- Expertise in observability tools, Linux networking (tc, nftables, conntrack, iptables, WireGuard), and service mesh.
- Strong programming in Go for Kubernetes controllers, plus scripting skills in Python/Bash.
- Experience with OpenStack integration, CNI plugins (Cilium preferred), and dynamic policy enforcement.

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