Site Reliability Engineer II

Calix; Bengaluru; Hybrid; INR 900,000 - 1,300,000; Full time

Job summary

Calix is seeking a Site Reliability Engineer II to keep production services on Google Cloud Platform available and scalable. You will bridge development and operations, focusing on GitOps deployments via ArgoCD, alert triage, and Grafana-based observability.

This entry-level role requires strong OS, networking, and Linux knowledge and includes on-call responsibilities. Location is India with a flexible hybrid model; work from the Bangalore office up to 20 days per quarter.

Qualifications

• Experience deploying and managing applications using ArgoCD and Git version control.
• Comprehensive knowledge of networking layers and practical troubleshooting in HTTP/S, DNS, gRPC, SSL/TLS, TCP/UDP.
• Strong Linux fundamentals including process management and kernel parameters.
• Familiarity with Grafana/Loki/Tempo observability tools.
• Ability to write automation scripts in Python, Bash, or Go.

Responsibilities

• Deploy, rollback, and manage containerized apps with ArgoCD pipelines.
• Triage and resolve infrastructure, OS, app, and network alerts.
• Diagnose network connectivity and latency across cloud and Kubernetes layers.
• Troubleshoot OS bottlenecks on GKE worker nodes.
• Use AI-driven Ops to interpret events and isolate root causes.
• Participate in on-call rotations and mitigate production issues quickly.

Skills

CI/CD

GitOps concepts

Networking (OSI)

Linux internals

Observability basics

Incident response

Python scripting

Tools

ArgoCD

Git

Kubernetes

Linux

Grafana

Prometheus

GKE

Python

Bash

Go

Job description

The Calix platform enables Communication Service Providers (CSPs) of all sizes to transform and future-proof their businesses. Through real-time data, automation, and actionable insights delivered viaCalix One— our cloud-first, AI-powered platform — CSPs can simplify operations, collapse cost, and accelerate innovation. Calix One brings together the automation of everything and the experience of one, empowering customers to deliver differentiated subscriber experiences while driving acquisition, loyalty, and revenue growth. This is the Calix mission: to enable CSPs of all sizes to simplify, innovate, and grow, strengthening both their businesses and the communities they serve. We’re at the forefront of a once in a generational change in the broadband industry. Join us as we innovate, help our customers reach their potential, and connect underserved communities with unrivaled digital experiences.

The Site Reliability Engineer II (SRE II) ensures our production services remain available, scalable, and efficient on Google Cloud Platform. You will bridge the gap between development and operations by applying software engineering mindsets to containerized infrastructure challenges. This entry-level role focuses on GitOps application deployments via ArgoCD, alert triage, Grafana Labs observability, and leveraging AIOps platforms, backed by strong OS and networking knowledge.

Key Responsibilities

• GitOps & Deployments: Deploy, roll back, and manage the lifecycle of containerized applications using ArgoCD pipeline workflows.
• Alert Triage & Resolution: Act as the first line of defense to investigate, troubleshoot, and resolve infrastructure, OS-level, application, and network alerts.
• Network Troubleshooting: Diagnose connectivity and latency issues across all network layers, isolating problems between cloud VPCs and Kubernetes overlays.
• OS Troubleshooting: Diagnose deep Operating System bottlenecks including CPU throttling, memory leaks, and storage constraints on GKE worker nodes.
• AIOps Utilization: Use AI-driven operations tools to interpret correlated events, anomaly detections, and automated root-cause insights.
• Incident Response: Participate in on-call rotations, using Grafana dashboards and AIOps suggestions to quickly mitigate production container issues.

Required Technical Skills

• CI/CD & GitOps: Practical experience deploying and managing applications using ArgoCD and Git version control systems.
• Networking: Comprehensive knowledge of all layers of networking (OSI model), with practical troubleshooting skills in Layer 7 (Application): HTTP/S, DNS, gRPC, and SSL/TLS handshakes; Layer 4 (Transport): TCP/UDP mechanics, three-way handshakes, and port allocation; Layer 3 (Network): IP routing, CIDR blocks, Subnetting, and ICMP; Kubernetes Networking: Understanding of Pod-to-Pod communication, Services, Ingress controllers, and CNI plugins.
• Operating Systems: Strong, deep foundational knowledge of Linux (Ubuntu, Debian, or Container-Optimized OS) internals, process management, file systems, and kernel parameters.
• System & Network Utilities: Proficiency with command-line diagnostic tools (e.g., tcpdump, curl, dig, traceroute, top, iostat).
• AIOps Concepts: Familiarity with AI-driven operations, event correlation, anomaly detection, and automated noise reduction.
• Observability: Foundational experience with the Grafana Labs ecosystem (Grafana, Mimir/Prometheus, Loki, Tempo).
• Orchestration: Functional knowledge of deploying, scaling, and managing workloads in GKE.
• ML/AIOps (nice to have ): Anomaly detection concepts , log-based ML models
• Demonstrated experience writing automation scripts in Python, Bash, or Go

Soft Skills & Qualifications

• Problem Solving: Ability to systematically troubleshoot complex microservice and OS-level issues under pressure.
• Urgency & Prioritization: Strong sense of ownership and ability to prioritize alerts based on business impact.
• Analytical Mindset: Comfort working alongside data-driven, automated recommendations to solve infrastructure problems.
• Communication: Clear written and verbal communication during high-stress incident responses.

Location: India – (Flexible hybrid work model - work from Bangalore office for 20 days in a quarter)

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