Open to remote opportunities

Building Cloud
Infrastructure
That Scales.

AWS DevOps Engineer with 3+ years of hands-on experience designing production-grade cloud systems, CI/CD pipelines, and multi-tenant architectures serving 1000+ customers.

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3+ Years Experience
~80% AWS Cost Reduction
AWS Certified
1000+ Subdomains
Olusegun Akinnola — AWS DevOps Engineer

~80%

AWS Cost Reduced

About Me

Your Team's
DevOps Engineer

I'm Olusegun Akinnola — an AWS DevOps Engineer currently at Divverse Labs LLC , where I manage production infrastructure for a multi-tenant SaaS platform serving 1000+ customer subdomains with 99.9% uptime.

I've reduced AWS costs by ~80% through architectural optimization, built zero-downtime CI/CD pipelines, and designed secure VPC architectures. I bring hands-on expertise in Terraform, Docker, Kubernetes, Jenkins, GitHub Actions, and the full AWS ecosystem.

Multi-Tenant SaaS

1000+ subdomains managed

AWS Certified SAA

Solutions Architect – Associate

Infra as Code

Terraform, CloudFormation

Zero Downtime

CI/CD with automated rollback

Real-World Impact

What I've Delivered

Production engineering, owning and supporting cloud infrastructure across multiple client environments, including multi-tenant SaaS platforms at global scale..

~80%

AWS Cost Reduction

1000+

Customer Subdomains

99.9%

Uptime Maintained

Zero

Public DB Exposure

~80% AWS Cost Reduction

The Problem → The Solution → The Result

Problem

AWS bill was growing unchecked — oversized instances, unused resources, no reserved capacity planning, and inefficient traffic routing patterns.

What I Did

Audited the full AWS infrastructure. Right-sized EC2 instances based on actual usage patterns. Migrated all EBS volumes from gp2 to gp3. Implemented Reserved Instance planning. Redesigned traffic routing to eliminate redundant data transfer costs.

Result

~80% reduction in monthly AWS spend — without any performance degradation. Savings compounded every month.

EC2 EBS gp3 Reserved Instances Cost Explorer

1000+ Subdomain Architecture

Multi-tenant SaaS at scale

Problem

SaaS platform needed to serve 1000+ repair businesses, each with their own subdomain — while keeping data isolated, performance consistent, and security audit-ready.

What I Did

Designed secure VPC architecture with public/private subnet segmentation. Deployed RDS in private subnets with VPC peering. Enforced least-privilege IAM across all services. Zero public database exposure.

Result

99.9% uptime across 1000+ subdomains. Passed all security audits. Zero data breaches. Architecture scaled without re-engineering.

VPC RDS IAM Route 53

Zero-Downtime Deployments

CI/CD pipeline automation

Problem

Deployments were manual, error-prone, and required maintenance windows. Each release risked downtime for 1000+ active customers.

What I Did

Built GitHub Action-based CI/CD pipelines with automated testing, build triggers, health checks, and rollback mechanisms. Containerized services with Docker for environment parity.

Result

Zero-downtime deployments with automated rollback. No manual intervention during releases. Consistent deployments across dev, staging, and production.

Jenkins Docker CloudFormation

Full-Stack Observability

Monitoring & incident detection

Problem

No centralized monitoring. Incidents were discovered by customers before the team. Mean time to detect (MTTD) was unacceptably high.

What I Did

Implemented CloudWatch for AWS-native metrics, Prometheus for custom application metrics, and Grafana for unified dashboards. Set up alerting for proactive incident detection.

Result

Dramatically reduced MTTD. Team now detects and responds to issues before customers notice. Full visibility across the entire stack.

Prometheus Grafana CloudWatch

Sep 2023 - Present

Divverse LLC, Texas

DevOps Engineer

June 2022 - Sept 2023

Wema Bank, Lagos

DevOps Engineer

Jan 2020 - June 2022

United Bank for Africa, Lagos

Backend Engineer

What I Do

Core Expertise

The skills and areas I work with every day to build, manage, and optimize cloud infrastructure.

AWS Infrastructure

Production-grade AWS architecture — VPCs, EC2, RDS, S3, CloudFront, Route 53, ALB, ElastiCache. Multi-AZ deployments with security-first design.

CI/CD Pipelines

Automated build-test-deploy pipelines with Jenkins, GitHub Actions, and ArgoCD. Zero-downtime deployments with rollback mechanisms and health checks.

Cost Optimization

AWS bill auditing, instance right-sizing, gp2→gp3 migrations, Reserved Instance planning, and architecture redesign. Achieved ~80% cost reduction.

Infrastructure as Code

Terraform modules, CloudFormation templates, Terragrunt — version-controlled, reproducible infrastructure across dev, staging, and production.

Security & Compliance

Trivy scanning, Cosign image signing, Syft SBOM, Checkov IaC scanning, Kyverno policies, least-privilege IAM, private subnet DB deployments.

Monitoring & Observability

Prometheus, Grafana, Loki, OpenTelemetry, CloudWatch. Full-stack observability with SLO burn-rate alerts and distributed tracing.

Projects

What I've Built

Open-source projects demonstrating production-grade DevOps practices.

Open Source

Blue-Green Deployment CI/CD Pipeline (EKS)

Designed and implemented a production-style CI/CD pipeline using Kubernetes (EKS) with blue-green deployment strategy, enabling zero-downtime releases and instant rollback.

  • Deployed containerized applications on Amazon EKS with Kubernetes services
  • Implemented traffic switching between environments using LoadBalancer
  • Integrated CI/CD tooling (Jenkins, SonarQube, Nexus) for build, test, and artifact management
  • Automated infrastructure provisioning using Terraform (EKS setup)
Kubernetes (EKS) Jenkins SonarQube Nexus Terraform
View on GitHub
Infrastructure Lab

Terraform AWS ECS Microservices Infrastructure

Production-ready AWS microservices infrastructure built with Terraform, enabling scalable, secure, and highly available containerized workloads.

  • Designed multi-AZ VPC architecture with public/private subnet isolation and NAT gateways
  • Deployed ECS Fargate microservices with auto-scaling and load balancing
  • Implemented RDS PostgreSQL + Redis (ElastiCache) in private subnets
  • Enforced security best practices (IAM least privilege, Secrets Manager, TLS encryption)
Terraform AWS ECS (Fargate) ElastiCache CloudWatch RDS
View on GitHub
Get In Touch

Let's Connect

Open to remote opportunities and interesting engineering challenges. Best way to reach me is LinkedIn or email.

LinkedIn

linkedin.com/in/olusegunakinnola

GitHub

github.com/shegezzy

Email

shegezzy@gmail.com

Location

Lagos, Nigeria
Available remotely worldwide

Send a Message

I'll get back to you within 24 hours.

Let's Build Something
Great Together.

Whether you're scaling infrastructure, optimizing costs, or looking for a DevOps engineer who cares about doing things right — I'd love to connect.

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