Senior Site Reliability Engineer & Platform Developer
Joe Hernandez
7+ years across regulated and high-growth environments (medical devices, enterprise SaaS, financial services), owning cloud infrastructure across 120+ production services, incident response, and the automation that eliminates manual toil. An SRE who writes Go and Python tooling, standardizes Azure infrastructure with Terraform, and builds Next.js applications.
7+
Years SRE & Cloud
120+
Production Services
99.99%
Multi-Region Uptime
$12K+/mo
Cloud Spend Saved
Featured Projects & Open Source
Upstream Contributor: Terraform AzureRM Provider
5 merged PRs to HashiCorp's provider, written in Go
When Azure shipped features Terraform couldn't manage yet, I wrote the fix upstream instead of working around it: new resources, runtime support, and bug fixes now shipped to everyone who uses the provider.
GoTerraformAzure API
VisualTF: Catch Terraform Misconfigs at Design Time
Personal project · Azure support live, AWS/GCP next
Overlapping subnet CIDRs and publicly exposed PaaS resources usually get caught in PR review, or after deploy. VisualTF flags them while you draw the architecture, then compiles it live into idiomatic Terraform HCL.
ReactTypeScriptTerraform HCL
Cloud Services (Classic) to App Service Migration
99.99% uptime across US + EU after cutover
Built the target environment from scratch in Terraform for a platform generating tens of millions in annual revenue. The reusable modules became the team's default IaC standard.
Azure App ServiceTerraform
Career Journey & Impact
Senior Site Reliability & Infrastructure Engineer
April 2025 – PresentEnterprise SaaS & Regulated Financial Technology
- Architected multi-cluster AKS environments with modular Terraform, maintaining 99.99% availability, and built Go and Python self-healing tooling that eliminated 12+ hours per week of toil.
- Established SLIs/SLOs and error budget policies to gate deployments during high-burn periods, and engineered CI/CD and DevSecOps pipelines with policy-as-code and vulnerability scanning.
DevOps & Platform Infrastructure Engineer
July 2022 – April 2025Enterprise SaaS
- Scaled multi-region AKS infrastructure across 600+ Linux nodes with Terraform and Ansible, shipping zero-downtime blue/green and canary rollouts via Helm.
- Centralized secrets management via HashiCorp Vault and Azure Key Vault, enforcing least-privilege RBAC, and led postmortems as part of a 24/7 on-call rotation.
Software Engineer II, Backend & DevOps
February 2021 – July 2022Regulated Medical Devices
- Automated hybrid cloud infrastructure with Terraform and ARM templates, and built auditable CI/CD pipelines with rollbacks in Azure DevOps and Octopus Deploy.
- Executed Linux OS hardening, network segmentation, and vulnerability remediation across servers.
Solutions & Systems Engineer
March 2019 – February 2021Software Engineering & Systems Administration
- Developed Python, Bash, and PowerShell workflows to automate server provisioning and configuration management.
- Administered Linux/Windows server fleets and performed query and performance tuning on SQL databases.
Certifications & Credentials
☁️
Microsoft Certified
Azure Administrator Associate (AZ-104)
Validated expertise across Azure identity, compute, virtual networking, storage governance, and security.
🏗️
HashiCorp Contributor
terraform-provider-azurerm
5 merged pull requests adding resource schemas, Azure REST API mappings, and Go acceptance tests.
Latest Technical Posts
Practical insights on SRE practices, incident management, cloud architecture, and modern development.
Beyond 'You Build It, You Run It': Why Collective Ownership Scales Better
Sep 6, 2026
Why rigid ownership creates bottlenecks, and how cookie cutter patterns, InnerSource, and robust documentation turn SREs from gatekeepers into platform enablers.
SRETerraformPlatform EngineeringCultureDevOps
Why You Should Ask AI Before You Ping Your SRE
Jun 25, 2026
I still get daily messages about simple issues. Here is why adopting an 'ask AI first' habit will save both of us a lot of time.
AISRECultureProductivity
Hitting the Copilot Credit Wall: How We Adjusted Our AI Strategy
Jun 14, 2026
Our team blew through our GitHub Copilot credits in just a few days. Here is how we adapted and learned to be more efficient with our AI usage.
AISREGitHub CopilotProductivity
Technical Focus Areas
- 🤖 Automation & Tooling: Eliminating manual toil with custom Go CLI tools, Python scripts, and CI/CD pipelines.
- ☁️ Azure & Cloud Governance: Enterprise-grade Azure architectures, Private Endpoints, Key Vault CSI secret delivery, and VNet peering.
- 🏗️ Terraform (IaC): Standardized, reusable Terraform modules, policy-as-code guardrails, and provider contributions.
- ☸️ Kubernetes (AKS): Multi-tenant cluster platforms, ingress controllers, RBAC access models, and resource quotas.
- 📊 Observability & SLIs/SLOs: Building actionable Prometheus metrics, Grafana dashboards, and meaningful error budget alerting.
- 💻 Software Development: Go backend services and CLI tools, plus Next.js and React for internal tooling and this site.
Career Inquiries
Hiring for SRE or Platform Roles?
Employer names are left off this public site. Email me for the full resume with employer details and references, or connect on LinkedIn.