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 maintain Linux, AWS, Azure and GCP environments, set up monitoring and automate configuration and deployments.
HA and monitoringIaC and automationLinux / Cloud / On-premSecure operations
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 RCA
I work with Prometheus, Grafana, Nagios and Observium to monitor systems and investigate problems.
Secure maintenance
I handle backups, updates, system hardening, access controls and the documentation needed to maintain systems.
Stack
Technologies and areas
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
DevOps
Prometheus
Monitoring
Grafana
Monitoring
HAProxy
Networking
Nginx
Networking
PostgreSQL
Databases
Redis
Databases
Practice
Professional experience
From supporting users to administering servers and cloud environments.
Linux & Cloud Infrastructure Administrator
Administration of Linux and Windows server environments with a focus on stability, performance and automation. Infrastructure and application monitoring, hands-on work with AWS, Azure, GCP, Docker, Kubernetes, LXD, HAProxy, Keepalived and databases including MySQL, PostgreSQL, Redis and MariaDB.
LinuxCloudMonitoringHADatabases
Junior System Administrator
Production infrastructure monitoring, backups and configuration consistency. Administration of Axence nVision, second-line support and hands-on practice with AWS, Dynatrace, Docker, GitLab and Redis.
MonitoringBackupsAWSDockerGitLab
IT Support Specialist
Advanced technical support for IT infrastructure, system and hardware/software troubleshooting, and communication with global technology vendors.
SupportTroubleshootingVendors
Junior IT Support Specialist
Helpdesk ticket handling, computer hardware service, daily user support and operational documentation.
HelpdeskHardwareOperations
Education
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
Issued
Linux
LFS200
The Linux Foundation
Linux administration: 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
Knowledge and talks
Webinar for Hostersi
Architecture resilient to millions of users
In this webinar for Hostersi, I discuss preparing e-commerce infrastructure for Q4 traffic peaks and the problems that appear as traffic grows.
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
Platform stabilization and monitoring
I review alerts, metrics and dashboards to make service health easier to understand.
The priority is to find what is failing and where to look for the cause.
PrometheusGrafanaSLORCA
Automation
Configuration and deployment automation
I automate environment configuration and deployment steps using IaC and CI/CD pipelines.
Configuration should be reproducible without repeating manual changes.
TerraformAnsibleGitLab CIDocker
Operations
Hybrid infrastructure operations
I work with on-premises infrastructure, VPS, dedicated servers and public cloud platforms.
I help organize their configuration, monitoring and day-to-day maintenance.
LinuxAWSAzureHAProxy
Security / Ops
Security and operational readiness
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.