Senior Systems engineer

Ninad Chhatre

Mumbai, India *********@*****.*** +91-992******* linkedin.com/in/ninad-chhatre

SUMMARY

Senior Systems Engineer (promoted twice) with 7+ years building reliable, low-latency platforms on AWS. Delivered 99.99% uptime, ~40% performance gains and ~25% cost savings through migrations, IaC and automation. Led Aerospike replacement PoCs with ScyllaDB/DragonflyDB (p99

2 ms), served as Security Champion resolving 72 SCA/SAST alerts, and mentored teams to improve productivity.

SKILLS

Cloud & Virtualization: AWS (EC2, S3, RDS, ECS, Lambda, CloudFormation, CDK, Route 53, SQS), VMware vSphere, Docker, Kubernetes

Databases & Caching: Aerospike, ScyllaDB, DragonflyDB, Redis (ElastiCache), DynamoDB IaC & Automation: Terraform, Ansible, Puppet, Bash, Python, AWS CLI, CI/CD (CodeBuild, Jenkins)

Observability & Incident Mgmt: CloudWatch, Grafana, Zabbix, PagerDuty Security & Networking: Linux (RHEL, Ubuntu, Amazon Linux 2, AlmaLinux), Windows Server, IAM, Secrets Manager, AD/LDAP, OpenVPN, DNS, SSL/TLS, Certificate Manager Ways of Working: Git, Agile/Scrum, ITIL, JIRA, Confluence AI & Productivity: ChatGPT, GitHub Copilot, Cursor, prompt engineering, retrieval-augmented workflows

EXPERIENCE

Integral Ad Science (IAS) Pune, India

Senior Systems Engineer Oct 2024 – Present

System Engineer Mar 2022 – Sep 2024

Associate System Engineer Nov 2020 – Feb 2022

– Led reliability engineering and on-call; achieved 99.99% uptime for global, high-throughput, low-latency systems.

– Drove infrastructure migrations (on-prem cloud/new platforms) with near-zero downtime; improved performance by ~40%.

– Scaled capacity for +60% traffic growth via proactive capacity planning and performance testing.

– Database PoCs (Aerospike replacement): Leading evaluation of ScyllaDB and DragonflyDB for low-latency KV; DragonflyDB sustained ~100k ops/sec at p99 2 ms with 0% errors (token- bucket rate limiting; memtier_benchmark, 80/20 r/w) and ScyllaDB ~99k ops/sec at p99 2 ms; results guiding rollout strategy.

– Optimized Aerospike clusters, delivering ~25% annual cost savings and measurable performance gains.

– Built and operated AWS foundations using CDK, EFS, DynamoDB, and ElastiCache (Redis); improved resiliency and latency.

– Security Champion (Tech Ops): resolved 72 critical/high/medium SCA/SAST alerts from Arnica; enforced least-privilege IAM, introduced secrets rotation (AWS Secrets Manager), and embedded pre-commit/CI security scans.

– Updated Puppet modules/manifests and Hiera data to support Ubuntu-based workloads alongside RHEL (service units, repos, templates); reduced platform drift and rollout issues.

– Built a golden Ubuntu 24.04 AMI with cloud-init, baseline hardening, and SSSD/LDAP-backed key-based SSH; standardized access and reduced instance bootstrap time.

– Automated ~20% of operational work using Bash/Python and enforced configuration consistency with Ansible/Puppet.

– Adopted ChatGPT, GitHub Copilot, and Cursor to accelerate delivery—reduced boilerplate coding and troubleshooting effort by 50–70% and documentation time by 20–40%; tracked via Jira cycle time and PR throughput.

– Mentored and onboarded engineers; knowledge sharing improved team productivity by ~15%. Rentokil PCI Mumbai, India

Server Administrator Jun 2018 – Oct 2020

– Tuned Linux/Windows servers, applied security baselines, and improved monitoring for higher reliability.

– Implemented and managed OpenVPN for 200+ users, enabling secure remote access.

– Managed AWS foundations and G Suite; administered AD/Group Policies for stronger access control.

– Deployed Django apps on hybrid infrastructure with high availability and robust backups/DR SOPs.

– Built a high-availability on-prem Git environment; streamlined collaboration and reduced code management issues.

– Automated maintenance (shell + cron) to reduce toil on repetitive tasks; trained junior team members.

ACCOMPLISHMENTS

Master’s degree while working full-time; Security Champion for Tech Ops; Aerospike cost optimization

(25% annual savings); ScyllaDB/DragonflyDB low-latency PoC; OpenVPN for 200+ users; HA Git servers; RHCSA & RHCE; workshops in Cybersecurity/Ethical Hacking & IoT. EDUCATION

M.Tech., Computer & Information Technology — Department of Technology, Savitribai Phule Pune University 2024

CGPA: 8.34/10 Thesis: PPO-Driven Collaborative Computation Offloading for Satellite Edge Computing

B.E., Computer Engineering — Siddhant College of Engineering (Pune) 2017 Grade: Higher Second Class

CERTIFICATIONS

HashiCorp Certified Terraform Associate — A Cloud Guru (training completed) AWS Solutions Architect — Associate (training completed) Red Hat Certified Engineer (RHCE) — RHEL 7 Red Hat Certified System Administrator (RHCSA)

— RHEL 7

LANGUAGES

English Marathi (Native) Hindi

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