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Cloud / DevOps Engineer · Mid-level · ~5 yrs

Tanmay Bhattacharya

Senior DevOps / Site Reliability Engineer

Gurugram, India tanmay.bhattacharya@hey.com +91 99102 64837 linkedin.com/in/tanmay-bhattacharya github.com/tanmaybh
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Professional summary

Cloud / DevOps engineer with 5 years automating infrastructure and shipping pipelines across AWS and GCP. Owns Kubernetes platforms end to end — Terraform-managed clusters, GitOps delivery, and SLO-driven monitoring — with a record of measurable wins in uptime, deploy speed and cloud cost. Carries production on-call, mentors junior engineers, and treats every manual runbook as a bug to automate.

99.95%

Core-API availability

₹18L

Annual AWS savings

4x

Deploy frequency lift

Skills

Cloud

AWS (EKS, ECS, RDS, Lambda, IAM)GCP (GKE, Cloud Run, BigQuery)Linux (RHEL, Ubuntu)

Containers & orchestration

KubernetesDockerHelmArgo CDIstio

IaC & CI/CD

TerraformTerragruntGitHub ActionsJenkinsAnsible

Observability & data

PrometheusGrafanaDatadogLokiPagerDutyPostgreSQL

Work experience

Senior DevOps Engineer · Nimbus Retail (Series C e-commerce)

Aug 2022 – Present

Gurugram

  • Own a 40-service Kubernetes platform on AWS EKS serving 800k daily users; standardized Terraform + Helm modules that cut new-service onboarding from ~2 days to 3 hours.
  • Migrated CI/CD from Jenkins to GitHub Actions with Argo CD GitOps, dropping median deploy time from 28 minutes to 7 and raising deploy frequency 4x.
  • Re-architected autoscaling and spot-instance usage, reducing monthly AWS spend ~₹18L/year (~32%) with no impact on p99 latency.
  • Built an SLO + alerting program in Prometheus, Grafana and PagerDuty that lifted core-API availability from 99.7% to 99.95% and cut alert noise 45%.
  • Mentored 2 junior engineers and authored the on-call runbooks and incident-review template now used across 3 teams.

DevOps Engineer · Helios Fintech

Jun 2020 – Jul 2022

Bengaluru

  • Containerized a legacy Java monolith and split it into 6 Dockerized services on GCP GKE, improving release isolation and cutting rollback time to under 90 seconds.
  • Codified all environments in Terraform with remote state and policy checks, eliminating config drift and reducing provisioning errors 70%.
  • Implemented centralized logging and tracing (Loki + Grafana + OpenTelemetry), cutting mean time to resolution for incidents from ~50 minutes to 18.

Featured projects

5 repos
DriftGuard — IaC policy gate

Open-source Terraform pre-merge policy checker adopted across 5 internal repos.

  • Built an OPA-backed GitHub Actions check that blocks non-compliant infra changes, catching ~40 risky changes before merge in its first quarter.
TerraformOPAGitHub ActionsIaC
Interactive 3D Portfolio

WebGL portfolio built on Eliorexa, linked from this résumé.

  • Reactive three.js hero with scroll-driven sections, lazy-loaded and reduced-motion safe — deployed via the same GitHub Actions pipeline pattern used at work.
three.jsReactCI/CD

Education

B.Tech Electronics & Communication Engineering

2020

Jadavpur University, Kolkata

First Class

Certifications

Certified Kubernetes Administrator (CKA)

CNCF · 2023

AWS Certified Solutions Architect – Associate

Amazon Web Services · 2022

HashiCorp Certified: Terraform Associate

HashiCorp · 2022

See the work in 3D

Explore Tanmay's interactive WebGL portfolio — projects, skills and a way to get in touch.

Open the 3D portfolio