Resume

ATS-compliant resume for Vishnu Agarwal - Senior DevOps Engineer

VISHNU AGARWAL

Senior DevOps Engineer | Remote

Email: vishnuagarwal1545@gmail.com | Phone: +91 9884213512

Website: https://vishnuagarwal1545.github.io

PROFESSIONAL SUMMARY

Senior DevOps Engineer with 6+ years of experience in cloud infrastructure, platform reliability, and large-scale automation. Proven expertise in AWS, Kubernetes, Terraform, CI/CD, database engineering, and streaming platforms. Strong background in driving cost optimization, security hardening, and high-availability architectures for SaaS and data-intensive systems.

CORE SKILLS

AWS, Kubernetes (EKS), Terraform, ArgoCD, Argo Workflows, Kafka, Databricks, PostgreSQL, Aurora, Redis, Valkey, OpenSearch, CI/CD, Python, Bash, GitOps, FinOps, Observability, Security Engineering, IAM, VPC, Route53, Nginx, OpenVPN, Datadog, Squadcast, PagerDuty, SSM Parameter Store, Elasticache, S3, EC2, ECR

PROFESSIONAL EXPERIENCE

Teikametrics — Senior DevOps Engineer (Remote)

Nov 2022 – Present

DATABASE ENGINEERING

  • Led migration POC from RDS to Aurora PostgreSQL, designing parallel infra to benchmark cost and performance
  • Engineered Aurora cluster topologies including provisioned and serverless writers/readers
  • Implemented blue-green deployments for database downsizing ensuring zero downtime
  • Tuned PostgreSQL parameters and implemented RDS Proxy to fix high concurrency issues
  • Led major PostgreSQL version upgrades and resolved Flyway compatibility issues

CLOUD INFRASTRUCTURE & NETWORKING

  • Architected staging OpenVPN infra and managed lifecycle including security patching
  • Resolved intermittent VPN connectivity issues for secure access to private subnets
  • Migrated traffic from Convox LB to centralized Nginx Ingress
  • Implemented VPC peering, Route53 DNS, DMARC/DKIM, and security groups
  • Implemented Terraform-based rate limiting on ingress

KUBERNETES & GITOPS

  • Upgraded EKS clusters from v1.24 to v1.33 ensuring addon compatibility
  • Implemented HA for ArgoCD, Argo Workflows, and Cluster Autoscaler
  • Optimized Argo Workflows reliability and safely decommissioned legacy clusters

DATA ENGINEERING & STREAMING

  • Migrated Databricks infra to Terraform with full state management
  • Implemented service principals and Unity Catalog credentials
  • Managed Kafka ecosystem including retention tuning and ACL governance
  • Built Kafka lag monitoring in Datadog

CI/CD & DEVOPS TOOLING

  • Built secure CI tunnels for integration tests to access private infra
  • Fixed Java OOM pipeline failures via resource optimization
  • Built Python CLIs tm-ctl and tf_bootstrap to standardize Terraform bootstrapping
  • Enhanced TerraformCD tooling with safety controls and drift detection

CACHING & RELIABILITY

  • Led Redis to Valkey migration with zero data loss
  • Scaled Elasticache clusters for Prime Day traffic and tuned eviction policies

FINOPS & COST OPTIMIZATION

  • Migrated RDS fleets to Graviton and GP3 for cost-performance gains
  • Implemented aggressive S3 lifecycle rules to reduce storage costs
  • Investigated AWS budget overruns and removed unused resources

OBSERVABILITY & INCIDENT RESPONSE

  • Implemented Datadog monitoring for RDS, Kafka lag, and services
  • Managed OpenSearch upgrades and Vector log pipelines
  • Integrated alerts with Squadcast and PagerDuty for Sev1 automation

SECURITY & ACCESS MANAGEMENT

  • Migrated secrets to AWS SSM Parameter Store
  • Led emergency credential rotations for OpenSearch and Aiven
  • Re-architected IAM and Databricks permissions with least-privilege model

Infosys — Specialist Programmer, DevOps Lead (Bengaluru)

Jun 2020 – Nov 2022

Project: Finacle OePayments (Edgeverve) - Payment solutions (NEFT, RTGS, UPI) deployed at multiple banks

DEVOPS & CI/CD

  • Developed CI/CD pipeline using GitLab CI for payment solutions
  • Established DevOps processes and conducted team awareness programs
  • Managed and coordinated with a team of 4 engineers, increasing team performance by 50%
  • Spearheaded client delivery scripts and implementation support with Ansible and Bash

SECURITY & COMPLIANCE

  • Devised licensing code and integrated it to internal license provider
  • Supervised FOSS scan for licensing checks; developed component for automated FOSS scan on GitLab CI
  • Enhanced efficiency by 250% with customized FOSS scan integration artifact with Black Duck
  • Integrated Seeker Scan in K8s to do dynamic code scan (Interactive App Security Scan - IAST)
  • Applied Security Vulnerability fixes in code to the process

KUBERNETES & INFRASTRUCTURE

  • Organized infrastructure components like Redis, RabbitMQ, InfluxDB as well as Grafana on VM and as pods on K8s
  • Utilized multiple environments for Kubernetes/Istio, DevOps and Test activities on On-Premise, AWS and GCP environment
  • Created Bash/Linux utility to reset, refresh k8s area and image tagging utility to tag stable, latest build of apps
  • Implemented Login-Logout Architecture design, and associated with JWT, OAuth 2.0
  • Used Grafana SSO integration with in-house IDP and applied Grafana startup configuration and deployment

PERFORMANCE OPTIMIZATION

  • Performed System Performance Testing with JMeter, Oracle/PG db, Redis and Redis Sentinel
  • Maximized app performance using tools like JMeter, Grafana & Flame-Graph to achieve 3x TPS increase

Infosys — System Engineer Specialist, Java Spring-Boot Developer (Bengaluru)

May 2019 – Jun 2020

Project: Nexus (CareFirst BlueCross BlueShield) - Healthcare re-imaging product with latest tech stack and cloud implementation

  • Created Spring Boot app to implement business logic using Kafka and Postgres DB
  • Independently developed Kafka POC in initial phase of project to implement Kafka library
  • Implemented logging and log masking
  • Proficiently developed Apigee integrations
  • Developed Authorization Architecture with Open Policy Agent and Kubernetes
  • Participated in internal hackathon

EDUCATION

B.Tech in Computer Science

2015 – 2019

SRM Institute of Science & Technology, Chennai, India

CGPA: 8.92

AWARDS & RECOGNITIONS

  • Certificate of Excellence - STG Ninja Award for Individual Performance (2022)
  • ESOP for Outstanding Performance (2021-2022)
  • Insta Award for contribution towards Nexus, CareFirst (2019)

CERTIFICATIONS

  • AWS Certified Developer - Associate (2020)