Sreenivas Hari

Principal Cloud Engineer | Infrastructure & Platform | SRE | Security & Compliance

Singapore, SGT

Sreenivas Hari's profile picture

About

Lead infrastructure and platform engineer with 20+ years of experience architecting and operating cloud-native, large-scale production systems. Expertise in Kubernetes, Infrastructure-as-Code, GitOps-based CI/CD, and Site Reliability Engineering, with hands-on experience building data platform infrastructure. Proven record leading cloud migrations, driving operational excellence (SLOs, observability, 24x7 on-call), and mentoring engineering teams. Currently own end-to-end cloud infrastructure for Gprnt, the world's first MAS-backed nationwide sustainability-reporting utility, accountable for platform availability, security, cost optimization, and disaster recovery on Microsoft Azure.

Work Experience

Gprnt (Greenprint)

2025 - Present

Principal Cloud Engineer

Own end-to-end cloud infrastructure for the world's first MAS-backed nationwide sustainability-reporting utility on Microsoft Azure.
  • Replaced Azure Pipelines deployments with Argo CD GitOps and gated pre-production validation, eliminating late-night releases; delivered blue-green switchover and automated rollback with Argo Rollouts for 2-3 releases per month.
  • Standardized multi-environment delivery with a Terramate-based IaC framework and reusable Azure service libraries, while embedding continuous FinOps governance through Kubecost and automated cost and budget reporting.
  • Built an AI-assisted observability and incident-response stack with OpenObserve, Coroot, and a custom HolmesGPT MCP integration; established critical-service monitoring and SRE on-call alerting with Uptime Kuma and PagerDuty.
  • Re-architected the Azure platform around hub-and-spoke networking and Zero Trust, enforcing layered protection with Azure Firewall and WAF across Application Gateway and Front Door.
  • Expanded identity and AI platform capabilities with Azure AD B2C custom IEF policies for SSO and passwordless access, plus OpenAI model configuration, delivery pipelines, and token-usage guardrails.
  • Lead a platform cost-optimization track that reduced Azure infrastructure spend from USD 20K+ to USD 6K per month, embedding cost targets into a 90-day execution plan and partnering with engineers to right-size workloads.
  • Drove platform security and compliance to achieve ISO 27001, GDPR, and PDPA certification, coordinating across project teams to meet financial-sector regulatory requirements.
  • Architected new deployment models — Gprnt Enterprise and Sovereign editions — engineering deployment speed, flexibility, and multi-tenant readiness to support revenue growth.
  • Operationalized cloud security and compliance through Azure Policy as Code, AKS RBAC, Microsoft Sentinel SIEM, vulnerability remediation, and VAPT support; closed tasks tracked in Sprinto for compliance.
  • Singapore
  • Azure
  • AKS
  • Argo CD
  • Terramate
  • FinOps

Telepathy Labs

2024 - 2025

Senior Engineer — DevOps & SRE

Led the company's evolution from manual DevOps to a Site Reliability Engineering model for an AI voice and text conversational platform, establishing 24x7 on-call and incident-response practices.
  • Delivered a complex AWS-to-Azure cloud migration, re-architecting workloads using hub-and-spoke patterns and serving as SME for Azure App Gateway, Key Vault, and Azure Kubernetes Service (AKS).
  • Implemented Pipeline-as-Code with ArgoCD (App-of-Apps pattern) and InnerSource processes across multiple clusters and environments, significantly improving deployment lead time and release reliability.
  • Built event-driven autoscaling for Kubernetes workloads with KEDA, optimizing resource utilization and application performance.
  • Codified Azure infrastructure with Terraform and Terramate into a unified codebase managing deployments across multiple subscriptions; enabled branch deployments via IssueOps (GitHub Actions) and Atlantis.
  • Established Datadog dashboards for SLO/SLA monitoring and real-time alerting via Slack and PagerDuty; resolved production incidents in real time and mentored engineers to own their infrastructure.
  • Evaluated and rolled out code-assisted AI tools (GitHub Copilot, Cursor AI) to improve developer productivity and code quality.
  • Singapore
  • Azure
  • AWS
  • ArgoCD
  • KEDA
  • Datadog

Pactera

2020 - 2024

Senior DevOps Engineer / Tech Lead — DevOps & Infrastructure

Built a platform-agnostic CI/CD framework with a shift-left security approach and onboarded multiple applications in a banking-client environment, using low-code tooling to enable self-service team onboarding.
  • Developed an ELK-based (Elasticsearch & Kibana) dashboard surfacing DevOps and delivery metrics for management and application teams.
  • Automated Jira workflows for deployment tracking and implemented project-specific Git webhooks, housekeeping, and monitoring scripts.
  • Mentored engineers across the infrastructure tech stack through training sessions and workshops, building team proficiency in tools and processes.
  • Singapore
  • CI/CD
  • DevSecOps
  • ELK
  • Jira

Schlumberger

2015 - 2020

Software Engineer — Lead for DevOps & Microservices

Built CI/CD with Azure DevOps and Jenkins for end-to-end deployment of a client/server application across Linux and Windows for production and staging environments.
  • Automated code signing of remote servers via PowerShell and automatic license generation using RabbitMQ.
  • Integrated WhiteSource vulnerability scanning into the build pipeline for all open-source components and developed administrative expertise in Azure DevOps continuous integration.
  • Singapore
  • Azure DevOps
  • Jenkins
  • PowerShell
  • RabbitMQ

Schlumberger

2013 - 2014

Intern

Set up the entire infrastructure as a proof of concept for the first plant setup in Singapore.
  • Set up the file server, build server, TFS and database server for the greenfield Flowloop project.
  • Singapore
  • TFS
  • Infrastructure

Honeywell Technology Solutions

2007 - 2013

Technical Lead

Developed core libraries, utilities, and frameworks in C++/STL using design patterns and a Software Product Line (SPL) approach.
  • Built product-architecture proofs of concept in close collaboration with domain experts, iterating prototypes into the production product line.
  • Improved product runtime performance by 15% through systematic memory profiling and optimization across software modules.
  • Bangalore, India
  • C++
  • STL
  • Design Patterns

Infosys Technologies Ltd

2005 - 2007

Software Engineer

Developed features for a core-banking solution supporting SWIFT payments (MT103, MT202, MT256) and built domain expertise in payments and trade finance.
  • Chennai, India
  • Core Banking
  • SWIFT

Education

Nanyang Technological University, Singapore

2014 - 2014
Master of Science, Information Systems

Anna University, India

2005 - 2005
Bachelor of Engineering, Computer Science

Skills

  • Microsoft Azure (AKS, App Gateway, Key Vault)
  • AWS
  • Kubernetes
  • Docker
  • Helm
  • ArgoCD
  • KEDA
  • Terraform
  • Terramate / Terragrunt
  • Atlantis
  • GitHub Actions
  • Azure DevOps Pipelines
  • Jenkins (Groovy)
  • IssueOps
  • Datadog
  • Grafana
  • Loki
  • ELK
  • Prometheus
  • SLO/SLA
  • Uptime Kuma
  • PagerDuty
  • SonarQube
  • Veracode
  • WhiteSource (Mend)
  • HashiCorp Vault
  • Azure OpenAI
  • Claude SDK
  • Claude Skills
  • Shell
  • PowerShell
  • Python
  • C++
  • PostgreSQL
  • RabbitMQ
  • Nginx
  • JFrog Artifactory

Certifications

Certified Kubernetes Administrator (CKA)

Cloud Native Computing Foundation

  • Kubernetes
  • CNCF

HashiCorp Certified: Terraform Associate (003)

HashiCorp

  • Terraform
  • IaC

Microsoft Certified: Azure Administrator Associate (AZ-104)

Microsoft — in progress

  • Azure
  • In progress