09/22/2026 updated
100 % available
Senior Linux and AWS Infrastructure Engineer
Poland
Only remote
Bachelor's Degree in Computer ScienceAbout me
Linux and AWS Infrastructure Engineer with 10+ years of IT experience. I keep production systems stable, secure and automated using Linux, AWS, Terraform and Ansible. I specialize in root-cause analysis, complex troubleshooting, migrations and clear documentation.
GitHub ActionsProxmoxSecure Shell (SSH)Active DirectoryAmazon Web ServicesAmazon CloudfrontAmazon Elastic Compute CloudAmazon S3Application FirewallAtlassian JiraMicrosoft AzureBash ShellUbuntu (Operating System)Cisco Systems VPN ClientCloud Computing
Linux Administration
Expertise in Rocky Linux, RHEL, Ubuntu and Debian environments, covering patching, upgrades, package repositories, systemd, permissions, SSH, sudo, cron, auditd, filesystems and performance troubleshooting across production systems.
AWS Infrastructure and Security
Hands-on experience with EC2, VPC, IAM, STS, S3, KMS, Route 53, CloudFront, ELB/ALB, RDS, DynamoDB, Lambda, CloudWatch, CloudTrail and SSM, including cross-account access, IAM role trust and permission policies, and STS AssumeRole flows.
Infrastructure as Code and Automation
Proficiency in Terraform modules, remote state and state migrations, Ansible roles and playbooks, Bash scripting, GitLab CI and GitHub Actions for controlled infrastructure automation and repeatable operational procedures.
Networking
Knowledge of TCP/IP, DNS, DHCP, VPN, VLAN, routing, security groups, load balancers, network monitoring, Juniper firewalls and routing in enterprise environments.
Identity and Security
Experience with AWS IAM policies, least-privilege access, KMS grants, Active Directory, LDAP, SSH key authentication, Cisco ISE, TLS/certificates, firewalls and security hardening.
Monitoring and Incident Response
Utilization of Icinga, Grafana, CloudWatch, CloudTrail and audit logs for incident response, root-cause analysis, change management, backup and recovery, and technical documentation.
Applications and Data
Operational support for Apache Tomcat, Java applications, PostgreSQL, Amazon RDS, Cassandra and Nginx/Apache, including backup, recovery, upgrades, configuration and troubleshooting.
Email Infrastructure
Troubleshooting and analysis of email delivery through Exim, SMTP and AWS SES, including message tracing, bounce and suppression-list checks and anti-spam solutions.
Virtualization and Containers
Familiarity with Proxmox VE, KVM, LXC/LXD, Docker and Kubernetes fundamentals for virtualized and containerized workloads.
Additional Platforms
Foundational knowledge of Windows Server administration, Microsoft Azure and workflow management using Jira and related tools.
Expertise in Rocky Linux, RHEL, Ubuntu and Debian environments, covering patching, upgrades, package repositories, systemd, permissions, SSH, sudo, cron, auditd, filesystems and performance troubleshooting across production systems.
AWS Infrastructure and Security
Hands-on experience with EC2, VPC, IAM, STS, S3, KMS, Route 53, CloudFront, ELB/ALB, RDS, DynamoDB, Lambda, CloudWatch, CloudTrail and SSM, including cross-account access, IAM role trust and permission policies, and STS AssumeRole flows.
Infrastructure as Code and Automation
Proficiency in Terraform modules, remote state and state migrations, Ansible roles and playbooks, Bash scripting, GitLab CI and GitHub Actions for controlled infrastructure automation and repeatable operational procedures.
Networking
Knowledge of TCP/IP, DNS, DHCP, VPN, VLAN, routing, security groups, load balancers, network monitoring, Juniper firewalls and routing in enterprise environments.
Identity and Security
Experience with AWS IAM policies, least-privilege access, KMS grants, Active Directory, LDAP, SSH key authentication, Cisco ISE, TLS/certificates, firewalls and security hardening.
Monitoring and Incident Response
Utilization of Icinga, Grafana, CloudWatch, CloudTrail and audit logs for incident response, root-cause analysis, change management, backup and recovery, and technical documentation.
Applications and Data
Operational support for Apache Tomcat, Java applications, PostgreSQL, Amazon RDS, Cassandra and Nginx/Apache, including backup, recovery, upgrades, configuration and troubleshooting.
Email Infrastructure
Troubleshooting and analysis of email delivery through Exim, SMTP and AWS SES, including message tracing, bounce and suppression-list checks and anti-spam solutions.
Virtualization and Containers
Familiarity with Proxmox VE, KVM, LXC/LXD, Docker and Kubernetes fundamentals for virtualized and containerized workloads.
Additional Platforms
Foundational knowledge of Windows Server administration, Microsoft Azure and workflow management using Jira and related tools.
Experience
Professional experience0 - 5 years
Freelancer since2025
Languages
EnglishFluentPolishNative speaker
Project history
Operating and improving business-critical Linux environments on AWS, administering Rocky Linux/RHEL and Ubuntu systems, developing Ansible roles and playbooks, maintaining AWS infrastructure via Terraform, designing and troubleshooting AWS IAM policies, investigating production incidents, supporting PostgreSQL and Cassandra operations, maintaining GitLab CE and CI pipelines, troubleshooting Linux authentication via Active Directory/SSSD and analyzing email delivery through Exim, SMTP and AWS SES.
Designed, implemented and operated AWS infrastructure using EC2, VPC, S3, IAM, CloudFront, Route 53, Lambda and load balancers. Automated provisioning with Terraform and GitHub Actions, migrated workloads from on-premises to AWS, supported cloud security and network operations, and diagnosed production and SaaS incidents across AWS, Linux, network and security layers.
Administered and supported server, network and user-access services in an enterprise environment. Worked with Linux and Windows Server, Active Directory, DNS, DHCP, VPN, VLANs, routing, firewalls, monitoring and incident resolution. Supported email infrastructure and troubleshooting including Exim and anti-spam solutions.