05/31/2026 updated

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Senior DevOps Engineer / SRE

Iasi, Romania
Only remote
Bachelor Degree in Applied Science, Forensic and Applied Biology
Iasi, Romania
Only remote
Bachelor Degree in Applied Science, Forensic and Applied Biology

Profile attachments

Mircea Ionascu - DevOps-SRE- 2026.pdf

About me

AWS-focused DevOps/SRE Engineer with 8 years of experience building, operating cloud infrastructure at scale. Specialized in Kubernetes platforms, Infrastructure as Code, CI/CD, observability, and incident response, with a strong focus on reliability, operational efficiency, and cost optimization.

Cloud EngineeringPrometheusIstioInfrastructure as Code (IaC)AWS ECSGitLabCloudformationKubernetesAWS GlueTerraformAWS EKSElk Stack
AWS Cloud Infrastructure
Expertise in building and operating cloud infrastructure on AWS at scale, including services such as EKS, EC2, IAM, WAF, S3, RDS, and CloudWatch. Experience with Terraform-based platform foundations, FinOps practices, cost dashboards, and anomaly response workflows.

Kubernetes & Container Orchestration
Deep knowledge of Kubernetes platforms including EKS, K3s, and AKS. Hands-on experience with Kubernetes-to-AWS integrations such as AWS Load Balancer Controller, EBS/EFS CSI, S3 Mountpoint, Snapshot Controller, and External DNS, as well as cluster hardening with FIPS endpoints, CIS-hardened nodes, IronBank base images, and Istio.

CI/CD & GitOps
Proficiency in GitLab and GitHub CI/CD pipelines, as well as GitOps tooling including Helm, Flux, and ArgoCD. Design and implementation of internal tooling to streamline release cycles and day-to-day DevOps workflows.

Observability & Monitoring
Building self-hosted observability platforms compatible with the Prometheus/Grafana ecosystem. Scaling observability to 10M+ active series using Vector, VictoriaMetrics, and VictoriaLogs.

Incident Management & SRE
Participation in 24/7 on-call rotations for critical SaaS incidents, owning triage, escalation, and rapid service restoration. Experience with RCA processes and postmortems.

Infrastructure as Code (IaC)
Heavy use of Terraform and HashiCorp tooling including Consul, Vault, and Nomad for building and maintaining infrastructure for government-focused and SaaS applications.

Agentic AI & Automation
Development of in-house agentic AI assistants integrated with internal services through dedicated MCP servers and Slack workflows, accelerating incident resolution and investigations while enforcing guardrails, auditability, and token management controls.

Security & Compliance
Hardening of clusters and delivery operations through AWS WAF, private registry modernization with Harbor, automated vulnerability discovery and remediation using Copa and DefectDojo, and release workflow improvements using Helm, Kustomize, and ArgoCd.

ELK Stack & Logging
Implementation of ELK-based audit logging and tenant onboarding automation in DevOps environments.

Experience

Professional experience5 - 10 years
Freelancer since2016

Languages

EnglishNative speakerRomanianNative speaker

Project history

Senior DevOps Engineer

Digital Science & Research
Ownership over multi-team cloud platform, migration from legacy systems and reliability initiatives for a high-traffic SaaS environment. Built and scaled a Terraform-based AWS platform foundation from scratch. Enhanced Amazon EKS with Kubernetes-to-AWS integrations. Hardened clusters with AWS FIPS endpoints, CIS-hardened nodes, IronBank base images, and Istio. Designed CI/CD processes in GitLab for recurring Kubernetes and OS lifecycle upgrades. Participated in 24/7 on-call rotation. Implemented FinOps practices with AWS cost dashboards and anomaly response workflows. Built a self-hosted observability platform with Prometheus/Grafana ecosystem and scaled to 10M+ active series using Vector, VictoriaMetrics, and VictoriaLogs. Developed an in-house agentic AI assistant integrated with internal services through MCP servers and Slack workflows. Delivered secure Amazon RDS access through a custom AWS IAM-based tunneling approach. Redesigned GitLab runners using IaC and Docker autoscaler executors on Spot instances. Designed a Kubernetes approach for stateful Apache Solr workloads. Strengthened security and delivery operations through AWS WAF hardening, Harbor, Helm, Kustomize, and ArgoCd.

DevOps Engineer

Yonder
Built and maintained infrastructure with HashiCorp tooling (Terraform, Consul, Vault, Nomad) for multiple government-focused applications. Supported private-cloud environments and integrated AWS services. Maintained and improved a self-hosted GitLab platform. Designed and implemented internal tooling to streamline release cycles and DevOps workflows. Integrated services with Apache NiFi and custom scripting to automate health, configuration, and operational reporting. Built a self-service internal operations portal and automation flows. Implemented ELK-based audit logging and tenant onboarding automation.

Technical Support Engineer

Idera (US)
Provided technical support for a broad portfolio of SQL Server monitoring and management products.

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