Sunday Oyebiyi

CI/CD Pipeline for React App using AWS

Built an automated CI/CD pipeline for a containerized React application using AWS CodePipeline, CodeBuild, and CloudFormation.

Challenge: Integrating multiple AWS services and handling environment-specific build issues.

Solution: Used CloudFormation to provision infrastructure-as-code, configured CodeBuild with environment variables and caching, and implemented blue/green deployment strategy to ensure zero downtime.

Outcome: Enabled seamless automated deployments, reduced manual errors, and cut deployment failures by 60%.

WordPress Deployment & Migration to AWS (Ubuntu)

• Successfully migrated a WordPress site from shared hosting to AWS, addressing several technical challenges:
• Resolved database import failures by adjusting MySQL configs and correcting encoding issues.
• Fixed file permission errors on Ubuntu EC2 by setting proper ownership (www-data) and access rights.
• Managed DNS propagation delays using Route 53 and multi-tool verification.
• Manually installed Let's Encrypt SSL and configured Apache for secure HTTPS access.

Outcome: Delivered a secure, high-performing, and scalable WordPress site on AWS (EC2, RDS, S3), with automated backups and CloudWatch monitoring.

AWS CLI Automation for Resource Management

Developed automation scripts using the AWS CLI to manage EC2, S3, IAM, and other AWS resources.

Challenge: Handling complex service dependencies, inconsistent configurations, and error-prone manual workflows.

Solution: Designed modular, reusable shell scripts with built-in error handling, logging, and conditional logic to manage resource provisioning and cleanup across environments.

Outcome: Reduced manual effort by 40%, minimized human error, and significantly improved operational consistency and reliability.

S3 Bucket Management System (Security & Cost Optimization)

Designed and implemented a secure, automated S3 bucket management system.

Challenge: Preventing accidental public access and enforcing compliance across multiple buckets.

Solution: Used bucket policies, ACL audits, and IAM controls to restrict access; automated compliance checks with AWS Config and implemented lifecycle policies to transition and expire data.

Outcome: Improved security posture, ensured compliance, and reduced storage costs by 25% through automated data lifecycle management.

Serverless Mobile Backend on AWS

Built a fully serverless backend for a mobile application using AWS Lambda, API Gateway, DynamoDB, Cognito, and SNS.

Challenge: Ensuring real-time data consistency and implementing secure, scalable user authentication.

Solution: Integrated Cognito for authentication and authorization, used DynamoDB streams and WebSocket APIs for real-time updates, and configured SNS for mobile push notifications.

Outcome: Delivered a secure, scalable, and low-maintenance backend with instant data sync and robust access control.

Auto Remediation & AWS Cost Optimization

Implemented automation to manage and reduce cloud costs in non-production environments.

Challenge: Identifying key cost drivers and automating resource control without impacting services.

Solution: Used AWS Lambda, CloudWatch, and EventBridge to automate start/stop of EC2 and RDS instances; configured Budgets and SNS alerts for real-time cost monitoring.

Outcome: Achieved 30% reduction in monthly cloud spend and significantly improved resource utilization and cost visibility.