Marcus Oyelaran
DevOps Engineer · Denver, CO · marcus.oyelaran@example.com · linkedin.com/in/marcusoyelaran
Summary
DevOps engineer with 6 years building CI/CD and infrastructure platforms that let product teams ship safely and fast. Cut deploy lead time from 2 days to 20 minutes across 12 services and took infrastructure fully into Terraform with zero-drift enforcement. Deep on AWS (EKS, IAM, VPC), Kubernetes, GitHub Actions, and the paved-road philosophy: golden paths teams want to use.
Professional Experience
DevOps Engineer · Northbeam Systems
Jan 2023 – Present
- Cut deploy lead time from 2 days to 20 minutes for 12 services by rebuilding CI/CD on GitHub Actions with trunk-based flows, ephemeral preview environments, and automated canary rollouts.
- Reduced change-failure rate from 18% to 4% by adding deploy-time smoke gates and one-click rollback, taking rollback time from 45 minutes to under 2.
- Brought 100% of infrastructure under Terraform (5 AWS accounts, 300+ resources) with drift detection in CI, eliminating console-made snowflake config as an incident cause.
- Cut AWS spend 27% ($14K/month) by rightsizing EKS node groups, moving batch workloads to Spot, and setting team-level cost dashboards with budget alerts.
- Halved new-service setup from 2 weeks to 3 days by shipping a paved-road service template (repo scaffold, pipeline, dashboards, alerts) adopted by 8 product teams.
Systems Engineer · Calder Insurance Group
Aug 2019 – Dec 2022
- Migrated 30 VM-based applications to containers on ECS with zero customer-facing downtime, retiring 2 data-center racks and saving $200K/yr in licensing and hosting.
- Cut patch backlog from 400 to under 20 servers by automating OS patching with Ansible and maintenance-window orchestration.
- Built centralized logging (CloudWatch, later ELK) covering 100% of production services, cutting mean time to diagnose from hours to minutes.
Projects
Open-source: tf-drift-bot
- Built a GitHub Action that comments Terraform drift on a schedule with resource-level ownership tags; 300+ stars, used in production by several teams.
Technical Skills
- Platform & infrastructure: AWS (EKS, ECS, IAM, VPC, RDS), Kubernetes, Terraform, Docker, Ansible, Linux
- Delivery & observability: GitHub Actions, ArgoCD (GitOps), Prometheus & Grafana, Datadog, Python & Bash scripting, cost optimization (FinOps)
Certifications & Education
- B.S. Computer Information Systems, Colorado State University — May 2019
- AWS Certified DevOps Engineer – Professional — Feb 2024
- CKA: Certified Kubernetes Administrator — Nov 2022