Service reliability
I work on service availability, address single points of failure and configure alerts that help identify problems.
DevOps Engineer / Cloud & Infrastructure
Linux, cloud and automation in practice.
I'm Dawid Pawlas, a Linux & Cloud Infrastructure Administrator at Hostersi. I administer Linux systems and infrastructure on AWS, Azure and GCP. My work covers monitoring, environment configuration and deployment automation.
HA and monitoringIaC and automationLinux and cloudSystem security
Day to day
What I work on
I maintain systems, investigate failures and automate tasks that do not need to be done by hand.
Operations automation
I use Terraform, Ansible and CI/CD to make configuration repeatable and reduce manual deployment steps.
Monitoring and root cause analysis
I work with Prometheus, Grafana, Nagios and Observium to monitor systems and investigate problems.
System maintenance and security
I handle backups, updates, system hardening, access controls and the documentation needed to maintain systems.
Stack
Tools and technologies
Technologies I use for infrastructure operations, automation and troubleshooting.
Linux
Systems
Windows Server
Systems
AWS
Cloud
Azure
Cloud
GCP
Cloud
Terraform
Automation
Ansible
Automation
Docker
Containers
Kubernetes
Containers
GitLab CI
CI/CD
Prometheus
Monitoring
Grafana
Monitoring
HAProxy
Web and proxy
Nginx
Web and proxy
PostgreSQL
Databases
Redis
Databases
Career
Professional experience
From supporting users to administering servers and cloud environments.
Linux & Cloud Infrastructure Administrator
I administer Linux and Windows servers, monitor infrastructure and applications, and automate configuration. I work with AWS, Azure and GCP, Docker, Kubernetes and LXD, as well as HAProxy and Keepalived. My work also covers MySQL, PostgreSQL, Redis and MariaDB databases.
LinuxCloudMonitoringHADatabases
Junior System Administrator
I monitored production infrastructure, maintained backups and kept configurations consistent. I administered Axence nVision and provided second-line support, working with AWS, Dynatrace, Docker, GitLab and Redis.
MonitoringBackupsAWSDockerGitLab
IT Support Specialist
I resolved system, hardware and software issues, supported users and worked with international technology partners on support cases.
SupportTroubleshootingVendors
Junior IT Support Specialist
I handled helpdesk tickets, repaired computer hardware, helped users with day-to-day IT issues and documented the work.
HelpdeskHardwareOperations
Academic background
Education
My studies covered networking, IT security and advanced database systems.
Master of Engineering - Computer Science
Specialization: Advanced Database Systems
Bachelor of Engineering - Computer Science
Specialization: Computer Networks and IT Security
Growth
Certifications and training
Cloud, networking and systems administration certifications and training, each with a verification link.
Issued
AI
AWS Certified AI Practitioner
Amazon Web Services
AI, ML and generative AI fundamentals on AWS: service selection, use cases, security, responsible AI and operational basics.
AWSAI/MLGenAIBedrockResponsible AI
Issued
Cloud
Microsoft Certified: Azure Administrator Associate
Microsoft
Azure administration across identity, governance, storage, compute, networking, monitoring and service operations.
AzureAZ-104Entra IDRBACMonitoring
Issued
Cloud
AWS Certified Solutions Architect - Associate
Amazon Web Services
AWS solution design: VPC, IAM, EC2, ELB, RDS, S3, security and architecture best practices.
AWSVPCIAMHAWell-Architected
Issued
Cloud
AWS Certified Cloud Practitioner
Amazon Web Services
Cloud fundamentals, security, billing, shared responsibility and cost-aware operations.
AWSBillingSecurityCloud Basics
Completed
Linux · Training
LFS200
The Linux Foundation
Linux administration training covering systemd, users, permissions, storage, networking, scripting and basic hardening.
LinuxsystemdStorageNetworking
Issued
Networking
CCNA
Cisco
Routing, switching, VLAN, OSPF, addressing, security basics and network troubleshooting.
VLANOSPFSubnettingTroubleshooting
Talks and webinars
Hostersi webinar
Architecture built to handle millions of users
In this Hostersi webinar, I discuss preparing e-commerce infrastructure for Q4 traffic peaks and the problems that arise under load.
Webinar details on the Hostersi website (Polish)Collaboration
How I can help
Most of my hands-on work is in monitoring, automation and infrastructure operations.
Reliability
Service reliability and monitoring
I review alerts, metrics and dashboards to make service health easier to understand.
I investigate failures and help determine which alerts need action.
PrometheusGrafanaSLORCA
Automation
Configuration and deployment automation
I automate environment configuration and deployment steps using IaC and CI/CD pipelines.
I turn manual steps into configuration that can be applied again.
TerraformAnsibleGitLab CIDocker
Operations
Hybrid infrastructure operations
I work with on-premises infrastructure, VPS, dedicated servers and public cloud platforms.
I help keep configuration, monitoring and maintenance consistent across these environments.
LinuxAWSAzureHAProxy
Security
System security and maintenance
I handle backups, updates, system hardening and access controls.
I document configuration and procedures so the team knows how to maintain the system.
BackupsHardeningAccessDocs
Contact
Let's talk about your infrastructure.
Message me on LinkedIn to discuss working together or a specific technical problem. You can find my badges on Credly.