Cem Karabulut

Site Reliability Engineer II

OppFi

Sep 2023 - Current (3 years 2 months)

• Served as Tier 2 on-call SRE, responding to and resolving 100+ incidents per quarter via PagerDuty; performed in-depth troubleshooting of production issues involving Kubernetes pods, HPA misconfigurations, and AWS service limits, followed by comprehensive Root Cause Analyses (RCAs) to identify systemic issues and implement long-term fixes. • Built and maintained CI/CD pipelines using GitHub Actions and ArgoCD to deploy services to AWS EKS; integrated with Helm charts to manage application configurations, reducing manual deployment steps and errors by 35%. • Automated routine operational tasks using Python and Bash scripts, schedulingjobs via cron to handle log rotation, service health checks, and daily maintenance tasks, reducing manua

Cloud Support Engineer

Brightspot

Dec 2019 - Sep 2023 (3 years 10 months)

• Engineered AWS WAF and rate-limiting policies to secure PGA TOUR's CMS platform during a high-traffic golf tournament, blocking over 3 million suspicious requests and maintaining stable site performance for live coverage and fan engagement. • Acted as a Tier 2 on-call responder during evening shifts, handling escalations via PagerDuty for containerized workloads on EKS and AKS. Diagnosed pod evictions, service disruptions, and node pressure issues; collaborated on post-incident reviews to implement fixes and improve SLO compliance. • Monitor multi-cloud infrastructure using Datadog across AWS, GCP, and Azure, and use Zabbix and Graylog for legacy systems to ensure performance, reliability, and rapid incident detection. • Partnered wit

AWS Platform Engineer

Capital One

Feb 2018 - Dec 2019 (1 year 11 months)

• Provisioned and managed AWS infrastructure using Terraform modules for VPCs, EC2, IAM, ECS, and RDS, enabling consistent, repeatable environments for dev, QA, and production microservices with network isolation. • Developed and maintained CI/CD pipelines in Jenkins and GitHub Actions for 40+ microservices powering Capital One's internal credit decision engine, fraud detection APIs, and customer notification services. Built reusable Groovy-based shared libraries to standardize Docker builds, integration tests, and blue/green deployments across platform teams. • Acted as the AWS SME for the platform engineering team, advising on best practices for VPC design, IAM policy structure, ECS optimization, and cost-efficient use of RDS and S3; r

Junior DevOps Engineer

Bosch

May 2017 - Feb 2018 (10 months)

• Managed backup workflows and monitoredjob health using the AWS Backup Console, providing centralized visibility and alerting for backup failures across environments. • Administered IAM roles, users, and policies to enforce least privilege access and secure cloud operations across development and production environments. • Collaborated with senior engineers to identify opportunities for cloud infrastructure optimization and security hardening, contributing to overall system resilience. • Engineered fully automated multi-tier backup workflows for EC2, EBS, and RDS using AWS Backup, S3 Glacier, and RDS snapshots, ensuring high-availability recovery and long-term data durability.

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Cem Karabulut

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