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Cloud Infrastructure & DevOps Engineer

Zero-downtime deployments on cloud infrastructure that stays up.

I design and run Azure environments, automate CI/CD with Jenkins and Git, and keep the Linux, Nginx, Tomcat and PostgreSQL stack behind your product fast, secure and boring in the best way.

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Portrait of Jenish Zinzuwadia in a dark suit

What I build and run in production

Microsoft Azure

Cloud environments planned, provisioned and kept healthy for production workloads.

Linux administration

Ubuntu servers hardened, patched, monitored and kept lean on disk and memory.

CI/CD with Jenkins and Git

Pipelines that build, test and ship every change without manual steps.

Nginx and Tomcat

Reverse proxies, SSL automation and multi-tenant Java application hosting.

PostgreSQL

Database setup, access control and connection tuning for Java applications.

Enterprise security

Microsoft 365 administration and email authentication with SPF, DKIM and DMARC.

Enterprise case studies

Real production problems, and how they were fixed.

Zero-Downtime Dual-Domain Migration

  • Nginx
  • Let's Encrypt
  • Tomcat

Coordinated a parallel, dual-domain migration phase transitioning dozens of enterprise microservices and product tenants from a legacy domain to a modern domain structure (*.sit-env.internal and *.prod-env.com). Configured comprehensive Nginx reverse-proxy server blocks and SSL certificate automation using Let's Encrypt wildcards. Managed complex Tomcat multi-tenant container routing.

Dual-domain migration architecture diagram

Automated CI/CD Pipeline on Azure

  • Jenkins
  • Azure DevOps
  • Maven
  • Nginx
  • Tomcat

Replaced manual server deployments with a fully automated Jenkins pipeline running on an Azure VM build server. A single git push to the Azure DevOps repository triggers the pipeline to pull the source, build and test with Maven and npm, package the WAR artifact, and deploy it over SSH/SCP to the production Azure VM, where Nginx reverse-proxies HTTPS traffic to the Spring Boot application on Tomcat.

CI/CD pipeline architecture diagram

Linux Infrastructure Optimization

  • Ubuntu
  • logrotate
  • cron

Encountered severe production server disk space depletion (81%+) caused by massive, unrotated syslog files. Re-architected log management policies by shifting logrotate check frequencies to active hourly cron schedules and enforced strict size-based rotation thresholds (maxsize 1G).

Linux log rotation re-architecture diagram

Tomcat Classloader Hygiene

  • Tomcat
  • JVM
  • Deployment automation

Application deployments frequently failed during redeployments due to stale compiled class caches. Engineered a pre-deployment automation hygiene routine that systematically purges stale Catalina work and temp cache paths before fresh .war artifacts deploy, eliminating JVM lockups.

Tomcat pre-deployment hygiene diagram

Cross-Origin Security Hardening

  • Spring Security
  • OAuth
  • CORS

External frontend applications attempting OAuth authentication flows experienced sudden service rejections. Audited custom Spring Security validation layers and updated environment-specific property allowlists to securely onboard new integration domains.

Cross-origin security hardening diagram

Prefer to hire through Fiverr?

Both services are available as fixed-price packages on my Fiverr profile.

Design and deploy scalable cloud infrastructure with CI/CD and monitoring

Azure setup, Docker deployments, Jenkins pipelines and Grafana monitoring.

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Set up, manage and troubleshoot Outlook and Microsoft 365 email

Mailbox setup, domain records and SPF, DKIM and DMARC so your email lands in the inbox.

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Tell me what you're running and where it hurts.

A slow deploy, a server running out of disk, email landing in spam. Send the details and I'll reply with a clear next step.