Cloud / DevOps engineerCoimbatore, IN

Productioninfrastructure,owned end to end.

I run a bare-metal Kubernetes (k3s) cluster serving 1,000+ concurrent users, a self-hosted Cloudflare Zero Trust edge, and the CI/CD that ships to both. Container orchestration, DNS and SSL, networking, observability — I own the whole path from commit to production.

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k3s · 1,000+ concurrent

1,000+

Concurrent users on one k3s cluster

128

Threads of dual Xeon Gold, 256GB ECC, operated bare metal

3 yrs

Running a self-hosted Linux and Zero Trust edge

2

Hackathons won or placed, from 600+ entrants


  • Kubernetes
  • k3s
  • Docker
  • Cloudflare Zero Trust
  • Terraform
  • Ansible
  • GitHub Actions
  • Prometheus
  • Grafana
  • Nginx
  • OpenWRT
  • Tailscale
  • Redis
  • MongoDB
  • Linux

About
Kavin Nandha M K

I like the layer most people would rather not touch.

Final-year B.E. Computer Science (Cyber Security) at Sri Shakthi Institute of Engineering and Technology, Coimbatore — and, since 2023, the person who keeps a homelab-turned-production environment alive: Cloudflare Tunnel and Tailscale for access, OpenWRT for the network, Prometheus and Grafana for the truth about what is happening.

At TeamMistake Technologies I worked both sides of the line — Dockerized CI/CD, DNS, SSL/TLS and Cloudflare traffic for production services, plus Node.js and MongoDB backend features shipped end to end. I am looking for a cloud, DevOps or platform engineering role where reliability is the product.

Deploysareeasy.Stayingupunder1,000peopleatonceistheengineering.

Selected workSix builds — infrastructure, backend, applied AI
01Kubernetes · bare metal

Moodle LMS on a bare-metal k3s cluster

A production learning platform with CodeRunner/Jobe grading services on dual Intel Xeon Gold 6430 servers, holding steady through real classroom load of 1,000+ concurrent users.

k3sIngressSecretsPrometheusGrafanaCase study below
02Self-hosted edge

Zero Trust homelab, run like production

Cloudflare Tunnel and Tailscale for identity-based remote access, OpenWRT for VPN routing and firewalling, Workers deployed with Wrangler at the edge.

2023 — present
03Platform

HR Connect

Placement and recruitment platform: containerized microservices behind a hardened API, JWT and role-based access, Redis caching on the hot endpoints, Nginx reverse proxy in front.

DockerNode.jsMongoDBRedis
04Applied AI · 24h build

MobilityX 2.0

A RAG chatbot, GRU and regression forecasting, and a Solidity trust layer, shipped cross-platform in twenty-four hours. Runner-up and software track winner among 250+ participants.

RAGReact NativeHardhat
05Infrastructure

Virtual Assessment Platform

Deployment and monitoring for concurrent online evaluations — backend communication tuned for low latency, bottlenecks traced and cleared during live sessions.

LinuxMonitoring
06Multi-role · MySQL

Institution Management System

Centralized academic platform for student, faculty and admin roles — access-controlled APIs and schemas built for concurrent multi-role use.


Case study 01Moodle LMS · k3s · dual Xeon Gold 6430

Aclassroomplatformthatcannotgodownat9am.

Problem

An entire institution’s coursework, quizzes and automated code grading had to run on hardware in the building — not a managed cloud — and survive a thousand students logging in at the same minute.

Approach

A k3s cluster on dual Xeon Gold 6430 servers, hardware RAID and dual 10GbE. Moodle, CodeRunner and Jobe split into a containerized service topology with ingress routing and managed secrets, then Prometheus, Grafana, cAdvisor and Node Exporter wired in before the first class, not after the first outage.

Outcome

1,000+ concurrent users held through peak sessions. Metrics drove scheduling and resource allocation decisions instead of guesswork, and grading workloads stayed isolated from the platform serving the pages.

Grafana · cluster overview
Orchestrationk3s, single-cluster multi-service
Compute2× Xeon Gold 6430 · 128 threads
Memory256GB ECC
Storage / networkHardware RAID · dual 10GbE
ObservabilityPrometheus · Grafana · cAdvisor · Node Exporter
Load held1,000+ concurrent users

ToolkitGrouped by the job it does

Containers & orchestration

Docker, Kubernetes (k3s), ingress and service topology, secrets management, Nginx reverse proxy and load balancing.

CI/CD & automation

GitHub Actions pipelines, Dockerized build and release flows, Terraform, Ansible, Bash and Python tooling.

Cloud & edge

AWS, Cloudflare, Cloudflare Workers and Wrangler CLI, Tunnel, Zero Trust access policies.

Observability

Prometheus, Grafana, cAdvisor, Node Exporter — container and node level metrics, capacity and scheduling decisions.

Networking

DNS, routing and switching, VLANs, NAT, subnetting, DHCP, VPNs, OpenWRT, Tailscale, live troubleshooting.

Security & access

Cloudflare Zero Trust, identity-based authentication, JWT and RBAC, firewall management, SSL/TLS configuration.

Languages

Python, Bash, TypeScript, JavaScript, Java — plus Node.js and Express on the backend side.

Data

MongoDB schema design and query optimization, MySQL, Redis caching.


Record

Oct 2025 — Mar 2026

DevOps & SDE Intern — TeamMistake Technologies

CI/CD workflows, containerized deployments and infrastructure automation with Docker and GitHub Actions. Owned DNS, domain routing, SSL/TLS and Cloudflare traffic management for production services, and debugged deployment, certificate and networking failures across production and intranet environments. On the product side: Node.js and Express features from data model to rollout, MongoDB query optimization, and JWT-based RBAC built from scratch.

2023 — present

Independent infrastructure & homelab engineer

A self-hosted Linux environment with Cloudflare Tunnel and Tailscale access, Zero Trust identity policies, OpenWRT networking, edge functions on Workers, and full container-level observability. Everything documented, everything reproducible.

2023 — 2027

B.E. Computer Science & Engineering (Cyber Security)

Sri Shakthi Institute of Engineering and Technology, Coimbatore — CGPA 8.61/10. Certified in Claude Code in Action (Anthropic, 2026) and Intel Unnati Industrial Training (2025).

Publication

Sentinel AI: Cyber Bully Detection and Prevention — Journal of Research in Artificial Neural Network Systems, Vol. 2, No. 2, pp. 1–5, April 2026. Read it

Awards

MobilityX 2.0 (2025) — runner-up and software track winner, 250+ participants. SRCAS 2.0 (2025) — winner, 350+ participants. Presented an AI microlearning platform at TN Startup Meet 2025.

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