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Ognjen Sedlar

@ognjensedlar

I build and operate secure AWS and Kubernetes platforms with Terraform, GitOps, and production-grade CI/CD.

I've built and operated AWS, Azure, and Kubernetes platforms across Interventur, Share IT, and Intens LLC, supporting production workloads with Terraform, Docker, ECS, EKS, AKS, and CI/CD automation.

I design GitOps workflows with Argo CD and Flux, run Istio service mesh and observability platforms, and partner with developers to resolve production incidents, strengthen security controls, and support SOC 2 compliance.

Experience

Work history, roles, and key accomplishments

Senior DevOps Engineer

Interventur

May 2026 - Sep 2026 (4 months)

Managed AWS infrastructure and containerized workloads on ECS and Docker, provisioned via Terraform. Owned Bitbucket CI/CD pipelines and implemented SAST/DAST security scanning.

AWS AWS ECS Docker Terraform Bitbucket Pipelines ECR IAM S3 KMS SSM EFS Elasticache AWS ALB NLB API Gateway Cloudwatch Datadog SAST DAST

Senior DevOps Engineer

Share IT

Jul 2024 - Apr 2026 (1 year 9 months)

Managed production Kubernetes environments across on-prem, AKS, and EKS, and designed Istio service mesh with mTLS and traffic routing. Implemented GitOps workflows with Argo CD and Flux, and supported SOC 2 compliance.

Ansible Prometheus Grafana Microsoft Entra ID SOC2 Office 365 Kubernetes Amazon EKS AKS Istio mTLS ArgoCD Flux GitOps Terraform

DevOps Engineer

Intens LLC

Jul 2022 - Jul 2024 (2 years)

Automated cloud infrastructure across AWS and Azure using Terraform, CloudFormation, Ansible, and Packer. Built CI/CD pipelines with Jenkins, GitLab CI, GitHub Actions, and Azure DevOps, and used Datadog for monitoring.

AWS Azure Amazon EKS AWS ECS Lambda Terraform CloudFormation Ansible Packer Docker Kubernetes Helm ArgoCD Istio Jenkins Gitlab CI GitHub Actions Azure DevOps Datadog PowerShell BASH Python

System Administrator / SysOps Administrator

Intens LLC

Jul 2017 - Jul 2022 (5 years)

Designed and implemented AWS environments from scratch, configuring VPC, Security Groups, NACLs, and EC2. Managed Linux and Windows servers and automated administration with Bash scripting.

AWS VPC Security Groups NACLs VPC Peerings EC2 Linux Debian Red Hat FreeBSD Windows Server Apache Nginx Tomcat Nagios BASH

Infrastructure Support / Systems Administration

Jago-AG

Jan 2015 - Dec 2017 (2 years 11 months)

Supported Linux and Windows users and enterprise infrastructure in an international e-commerce environment. Administered Jira, Confluence, Active Directory, Zimbra, and Samba.