Summary
Overview
Work History
Education
Skills
Websites
Certification
Timeline
Generic

Oleksandra Yakimtsova

Chicago

Summary

Site Reliability Engineer with 5+ years of experience in cloud infrastructure and DevOps, holding certifications including AWS Certified Solutions Architect and Certified Kubernetes Administrator. Reduced cloud spend by identifying unused assets and tuning infrastructure configurations. Implemented CI/CD pipelines using GitHub Actions and Jenkins, and automated infrastructure management using Terraform and Kubernetes, including developing custom Helm charts.

Overview

6
6
years of professional experience
1
1
Certification

Work History

Freelance DevOps Projects

02.2025 - 03.2025
  • Performed in-depth AWS resource audits, identified unused assets and tuned infrastructure configurations to reduce cloud spend.
  • Diagnosed and remediated configuration drift across critical AWS services, stabilizing deployments and improving infrastructure consistency.
  • Built and maintained Terraform modules to manage Datadog monitors, dashboards, and alerts as code. Integrated with GitHub Actions for secure, version-controlled changes.

Site Reliability Engineer

Learnosity
08.2022 - 08.2024
  • Engineered and executed automation for managing and updating numerous CloudFormation stacks by integrating CloudWatch events, Lambda function, and AWS CodePipeline to ensure seamless continuous deployment.
  • Deployed and maintained DataDog monitoring infrastructure via Terraform, scripting efficient resource lifecycle management that decreased manual intervention
  • Automated infrastructure deployments by constructing a Terraform CD pipeline with GitHub Actions; this minimized manual errors and reduced infrastructure provisioning time by 40%.
  • Instituted Terraform modules to provision Kubernetes clusters, install DataDog agent, and manage certificates; enabled faster scaling and reduced infrastructure costs by 15%.
  • Created auto fix for containerized applications in Kubernetes to prevent application failure and increase system fault tolerance by 50%.
  • Developed post-mortems, error corrections, and reports with in-depth incident analysis, improving incident resolution efficiency by 50%.
  • Drove on-call incident management, collaborating with cross-functional teams to implement critical updates, ensuring swift information flow that stabilized systems and minimized user impact.
  • Applied advanced analytical reasoning to conduct regular user audits and cost-optimization analyses, tested system recovery processes, ensuring functionality and meeting required controls.
  • Maintained and wrote Bash and Python scripts to drive automation across multiple tasks, boosting operational efficiency by 35%.
  • Generated and updated multiple Public Key Infrastructure (PKI) certificates to provision secure AWS access for new and departing team members, adhering to strict company security compliance policies.
  • Audited user access privileges quarterly and remediated excessive permissions, reducing potential security breach exposure; improved system security and adherence to industry best practices, while optimizing costs.
  • Defined and monitored SLOs, SLIs, and SLAs to align system reliability with user expectations and business goals.
  • Performed thorough maintenance and audit of DataDog dashboards, monitors, notebooks, and other resources.
  • Leveraged excellent problem-solving techniques to investigate and resolve various system issues through log analysis, identifying root causes, and providing detailed documentation for mitigation or fixes.
  • Crafted documentation/manuals for various teams and internal SRE usage improving team efficiency by 30%.

DevOps Engineer

Interwaters Development LLC
04.2019 - 08.2022
  • Automated deployment of ArgoCD notifications via HELM charts, directing alerts to relevant Slack channels based on namespace and environment,
  • Orchestrated Terraform infrastructure test pipeline within isolated environments, validating build integrity and slashing infrastructure failure rates in production by 40%, ensuring stability and reliability.
  • Configured DNS routing and managed domains using Amazon Route53 for smooth mapping of domain names to AWS resources.
  • Established secure AWS Virtual Private Cloud (VPC) infrastructure encompassing subnets, route tables, and security groups, enhancing network communication reliability and achieving zero downtime during peak traffic periods.
  • Conceptualized and developed custom Helm charts with ESO External Secret Operator (CRD) integration, aimed at automating K8s secrets creation from AWS Secret Manager.
  • Overhauled CI/CD infrastructure using Jenkins, resulting in 20% faster build times and a 30% reduction in integration errors for existing projects demonstrating enhanced project requirements.
  • Enabled principle of least privilege enforcement by configuring AWS IAM users, groups, roles, and policies, improving security management by 35%.
  • Developed and maintained Bash scripts to automate system provisioning and configuration, ensuring 100% consistency across all environments, and leading to a 30% decrease in configuration errors.

Education

Unfinished -

National Technical University of Ukraine 'Kyiv Polytechnic Institute'
05.2016

Skills

  • Technical Skills: AWS EC2, VPC, S3, IAM, Load Balancer, RDS, EBS, Route53, CloudFormation,CloudWatch, Auto Scaling Groups, ECS, EKS, Lambda, OCI
  • Containerization Technologies: Docker, Kubernetes, Helm Charts, Rancher, Kubernetes CRD’s
  • CI/CD Frameworks: Jenkins, GitHub Actions, ArgoCD, AWS CodePipeline
  • Monitoring Solutions/APM tools: Datadog, Prometheus, Grafana, OpenTelemetry
  • Scripting languages/Programming Languages: Bash, Python
  • Infrastructure as Code (IaC): Terraform, CloudFormation
  • Configuration Management Tool: Ansible, SaltStack
  • Operating Systems: Unix, Linux, MacOS
  • Version Control Tools: Git, GitHub

Certification

  • AWS Certified Solutions Architect - Associate, 09/01/22
  • CKAD: Certified Kubernetes Application Developer, 09/01/22
  • CKA: Certified Kubernetes Administrator, 09/01/22

Timeline

Freelance DevOps Projects

02.2025 - 03.2025

Site Reliability Engineer

Learnosity
08.2022 - 08.2024

DevOps Engineer

Interwaters Development LLC
04.2019 - 08.2022

Unfinished -

National Technical University of Ukraine 'Kyiv Polytechnic Institute'

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Oleksandra Yakimtsova