10/25/2026 updated
100 % available
Senior DevOps / Site Reliability Engineer / DevSecOps
Belgrade, Serbia
Serbia
High SchoolAbout me
Started IT career in 2009 as Linux and Network Admin, and moved officially to DevOps field in 2014, but was actually appying DevOps practices even before that.
GitOpsOpenTelemetryGCPAzure DevOpsKubernetes SecurityAmazon Web ServicesCloud Computing SecurityCloud EngineeringLinuxDevOpsElasticsearchPython (Programming Language)PostgreSQLLinux KernelLinux Administration
Cloud Platforms & Kubernetes
Expertise across major cloud platforms including AWS, GCP, OCI, Azure, IBM Cloud, OpenStack, DigitalOcean, Cloudflare and Equinix Metal. Extensive hands-on experience with Kubernetes, GKE, OpenShift, Kops, Istio, ArgoCD, Helm, Docker, KEDA and Vault.
Infrastructure as Code & Automation
Deep proficiency in Terraform, HCL, Ansible, SaltStack, GitLab CI, Jenkins, Hudson, CI/CD pipelines and GitOps workflows for automated infrastructure provisioning and delivery.
Observability & Monitoring
Strong command of Prometheus, Grafana, Loki, OpenTelemetry, ELK, Elasticsearch, OpenSearch, Logstash, Kibana, PagerDuty and Slack API for production observability and incident response.
Data & Messaging Systems
Hands-on experience with Kafka, Strimzi, PostgreSQL, MySQL, Redis, RabbitMQ, Cassandra, Couchbase, CouchDB and Google Cloud SQL for distributed data and messaging workloads.
Networking & Security
Solid knowledge of TCP/IP, VPN, firewalls, network security, Cloudflare, Nginx, HAProxy, encryption, SSO and Entra ID for securing and managing infrastructure.
Systems & Virtualization
Broad experience with Linux, Linux on ARM, Linux on IBM POWER, Red Hat, Unix/Solaris, FreeBSD, Triton SmartOS, Windows Server, KVM, VMware, Xen, IPMI and MAAS.
Compliance & Security Frameworks
Practical experience implementing SOC 2, HIPAA and PCI DSS compliance through access controls, audit evidence, infrastructure hardening and security processes.
GitOps & CI/CD
Proven track record building and standardizing CI/CD and GitOps workflows using ArgoCD, Helm, GitLab CI, Jenkins and HashiCorp Vault across multi-cloud environments.
Expertise across major cloud platforms including AWS, GCP, OCI, Azure, IBM Cloud, OpenStack, DigitalOcean, Cloudflare and Equinix Metal. Extensive hands-on experience with Kubernetes, GKE, OpenShift, Kops, Istio, ArgoCD, Helm, Docker, KEDA and Vault.
Infrastructure as Code & Automation
Deep proficiency in Terraform, HCL, Ansible, SaltStack, GitLab CI, Jenkins, Hudson, CI/CD pipelines and GitOps workflows for automated infrastructure provisioning and delivery.
Observability & Monitoring
Strong command of Prometheus, Grafana, Loki, OpenTelemetry, ELK, Elasticsearch, OpenSearch, Logstash, Kibana, PagerDuty and Slack API for production observability and incident response.
Data & Messaging Systems
Hands-on experience with Kafka, Strimzi, PostgreSQL, MySQL, Redis, RabbitMQ, Cassandra, Couchbase, CouchDB and Google Cloud SQL for distributed data and messaging workloads.
Networking & Security
Solid knowledge of TCP/IP, VPN, firewalls, network security, Cloudflare, Nginx, HAProxy, encryption, SSO and Entra ID for securing and managing infrastructure.
Systems & Virtualization
Broad experience with Linux, Linux on ARM, Linux on IBM POWER, Red Hat, Unix/Solaris, FreeBSD, Triton SmartOS, Windows Server, KVM, VMware, Xen, IPMI and MAAS.
Compliance & Security Frameworks
Practical experience implementing SOC 2, HIPAA and PCI DSS compliance through access controls, audit evidence, infrastructure hardening and security processes.
GitOps & CI/CD
Proven track record building and standardizing CI/CD and GitOps workflows using ArgoCD, Helm, GitLab CI, Jenkins and HashiCorp Vault across multi-cloud environments.
Experience
Professional experience10+ years
Freelancer since2014
Languages
EnglishFluentRussianGoodSerbianNative speaker
Project history
AWS-centered FinTech project, implementing DX Gateway to Datacenter and TGW to connect multiple AWS accounts through RAM share for Hybrid Cloud Setup. Utilized GitHub Copilot with Claude through VS Code, Terraform Cloud, ArgoCD, EKS, Istio and Hashicorp Vault.
Worked on GCP-based infrastructure and Kubernetes platforms supporting cloud-native workloads, production operations and reliability-focused delivery. Designed and provisioned GCP infrastructure with Terraform including multiple GKE clusters, Cloud Run, Cloud SQL, service mesh and Vault-backed secrets. Built secure, HIPAA-compliant multi-cluster platform patterns covering Kubernetes networking, controlled ingress, network security, environment separation and repeatable CI/CD delivery with GitlabCI and ArgoCD.
Operated a large multi-cloud Kubernetes estate across OCI, AWS, Azure, GCP and local OpenStack with multiple clusters per provider managed primarily through Terraform Cloud and ArgoCD. Maintained and improved platform services including Strimzi Kafka, Logstash, OpenSearch, Loki, Grafana and Prometheus for production observability and incident response. Improved SLO/SLI/SLA reliability by tuning alerts, reducing false positives and prioritizing actionable incidents. Built CI/CD and GitOps workflows with ArgoCD, Helm charts and HashiCorp Vault secrets management.