Gurpreet Singh

Senior Staff DevOps Engineer

Simpl — One Sigma Technologies • March, 2022 — June, 2024

• Led migration of Flink pipelines from EC2 cluster to EKS for improved efficiency & resource isolation.
• Introduced IP address based whitelisting for User IAM credentials to block access from outside known networks.
• Troubleshot & fixed numerous issues in infrastructure over my tenure:
• Built Grafana dashboards for quicker identification of issues across clusters.
• Resolved critical issues in Opensearch, Dask, Jupyterhub & Concourse clusters.
• Fixed dependency issues in Dask & Airflow cluster deployments, multiple times.
• Enhanced PostgreSQL performance:
• Implemented Table partitioning.
• Migrated data from a very large table(3 TB in size) to new partitioned table.
• Automated partition management/lifecycle with pg_partman & pg_cron.
• Cost Optimization & Performance:
• Implemented Karpenter on EKS utilizing Spot instances.
• Migrated RDS PostgreSQL databases to Aurora IO‑Optimized.
• Started the migration of a 6TB DynamoDB table to S3, Athena & Glue.
• Implemented Blue‑Green migrations for upgrading AWS RDS engine versions.
• Implemented VPC Endpoints for S3, DynamoDB to ensure security & optimize costs.
• Identified & added lifecycle rule for cleanup of incomplete multipart uploads.
• Migrated big‑data infrastructure to Spot instances: Dask EC2 clusters & ECS clusters.
• Contributed to the setup of scalable Jupyter clusters on ECS backed by Spot instances.

SRE Consultant

Ordway — Billing and Revenue Automation • March, 2021 — March, 2022

• Hardened Docker images & EC2 AMIs.
• Configured auto‑scaling on EKS clusters with custom metrics.
• Introduced Spot Instances for non‑prod workloads to optimize costs.
• Orchestrated migration from Heroku to AWS EKS for improved scalability:
• performed dozens of trial migrations
• identified issues in elasticsearch, database migrations & fixed them before actual migration
• minimized downtime by figuring out optimal ordering of migration steps
• migrated with zero critical issue

SRE Lead

Arcesium • April, 2019 — March, 2021

• Led Incident Management & Root Cause Analysis.
• Automated internal workflows & assisted L1 support.

Site Reliability Engineer

Adobe • February, 2017 — April, 2019

• Saved significant costs by optimizing AWS S3 storage.
• Handled on‑call duties & regular SRE tasks, including automation.
• Developed an internal Chaos testing service using Flask, Celery & SaltStack.

Lead Devops

GoFro.com — Bonavita Technologies • November 2015 — February, 2017

• Implemented monitoring with OMD server & check_mk.
• Managed AWS & in‑house infrastructure, including deployment automation with Jenkins and SaltStack.

International Institute of Information Technology, Pune

PGDBA — Information Technology • 2007 — 2009

• Conducted Business Quiz
• Conducted Linux Workshop

Kolhapur Institute of Technology's College Of Engineering — Shivaji University

Bachelor of Engineering — Electronics • 2007

• Kubernetes
• Terraform
• Microsoft Azure
• Python3
• Boto3
• Databases
• Jenkins
• High Availability
• Resilience
• Amazon Web Services

EKS, EC2, S3, Route53, Athena, Glue, Cloudformation, RDS, Dynamodb, Load Balancers, SNS, SQS, Lambda, API Gateway, Autoscaling

• Linux System Administration

Shell Scripting, Troubleshooting, Hardening

• Containers

Containerd, Docker

• Configuration Management

Ansible, Saltstack

Awarded twice

Simpl • 2023

Awarded both for individual and team contributions.

Quarterly achievement award

Adobe • 2018

Received for individual contributions and achievements within a quarter. Nominated multiple times for these awards.

Awarded twice

Snapdeal • 2014

Received an annual & a quarterly award for individual achievements.

• GeneratedCloud.com — My Tech Blog about infrastructure lifecycle management on cloud.