Building my way into the cloud.
Hands-on projects. Documented decisions. Learning through deployment and recovery.
I'm Jervil Angelo De Leon, a Philippines-based HRIS Technical Support professional building practical experience in cloud infrastructure, serverless applications, security, and automation. I turn real support scenarios and community needs into projects I can deploy, test, and improve.
I'm working toward a Cloud / Infrastructure Engineering role, with a focus on AWS, Terraform, CI/CD, Linux, and reliable operations.
A disaster recovery proof of concept for Philippine small businesses. It verifies database backups, stores encrypted copies off-site, and uses Terraform to provision a temporary AWS recovery environment after operator approval.
- Infrastructure as code: Terraform manages standby resources and temporary recovery servers in AWS Singapore.
- CI/CD: GitHub Actions checks application code, backup integrity, Terraform, and the dashboard, and deploys the public demo.
- Measured recovery: a real AWS drill recovered the sample application in 5 min 29 sec, with 26 sec of potential data loss. These are single-run results on synthetic data; off-site uploads currently require an operator session.
AWS: EC2 · S3 · IAM · IAM Identity Center · Systems Manager · CloudWatch · AWS Budgets
Tools: Terraform · Python · FastAPI · PostgreSQL · Docker · React · GitHub Actions
Explore the demo → · Source code · Recovery drill evidence
A live platform that helps Filipino readers discover and list Christian theological books. Sellers submit listings and photos; moderators review them before publication; readers contact sellers directly.
- Serverless backend: Amplify Gen 2 provisions authentication, a GraphQL API, storage, and backend functions.
- Access control: Cognito roles, scoped IAM permissions, and Lambda-controlled moderation protect listings and administrative actions.
- Delivery: GitHub-connected Amplify deployments serve the Next.js application over HTTPS.
AWS: Amplify · Cognito · AppSync · DynamoDB · S3 · Lambda · CloudFront · ACM · IAM · CDK / CloudFormation
Tools: Next.js · TypeScript · Tailwind CSS
Visit Teolohiya.site → · Source code and architecture
A financial education project, currently presented as Worth It Ba Sa Pilipinas?, that helps Filipinos explore salary deductions, expenses, MP2 savings, digital bank returns, and the effect of inflation on purchasing power.
- Useful calculations: compare savings in pesos and inflation-adjusted value, and estimate take-home pay and expenses.
- Data updates: scheduled GitHub Actions retrieve and validate economic data, keeping the last valid dataset if a source fails.
- CI/CD: data validation, lint, unit tests, browser tests, and a production build run before GitHub Pages deployment.
Tools: React · TypeScript · Vite · Tailwind CSS · Recharts · Vitest · Playwright · GitHub Actions · GitHub Pages
Try the calculators → · Source code and methodology
| Area | Services | Where I applied them |
|---|---|---|
| Compute and networking | EC2, VPC, Systems Manager | Recovery infrastructure and a hardened Linux/Nginx web server |
| Serverless APIs | Lambda, API Gateway, AppSync | HRIS ticketing API and Teolohiya's listing and moderation workflows |
| Data and storage | S3, DynamoDB | Verified off-site backups, book photos, listings, and support tickets |
| Identity and access | IAM, IAM Identity Center, Cognito | Scoped permissions, temporary operator access, and application roles |
| Hosting and delivery | Amplify, CloudFront, ACM | Teolohiya hosting, content delivery, and managed HTTPS |
| Monitoring and cost | CloudWatch, SNS, AWS Budgets | Recovery logs, ticket alerts, monitoring, and budget notifications |
| Infrastructure as code | Terraform, CDK / CloudFormation | Reproducible recovery infrastructure and Amplify Gen 2 backend resources |
Amplify manages several of Teolohiya's underlying AWS resources. The service list reflects their roles in the deployed application.
| Project | What I built |
|---|---|
| AWS Serverless Ticketing API | An HRIS support API with ticket tracking, critical-ticket notifications, and monitoring using Lambda, API Gateway, DynamoDB, SNS, and CloudWatch. |
| Secure EC2 Web Server | A Linux/Nginx server in a custom VPC with security groups, IAM, and EBS snapshots. |
| HRIS Template Tracker Automation | Completion tracking across business units using Power Automate, Excel, and Power BI. |
| ECCM Church Website | A responsive nonprofit website with a custom domain, visitor resources, and SEO essentials. |
2x AWS Certified
2x Oracle Cloud Infrastructure Certified
Additional training includes Cisco networking and cybersecurity, Google IT Support and System Administration, and IT Specialist: Databases.
Explore the projects, architecture decisions, and lessons behind the code.
