Hire the Best System Administrators
in Poland

More than 3,000 reviews on G2
Rating is 4.5 out of 5.
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Mykola R.

Czerwonak, Poland

$5/hr
5.0
1 jobs

Hello! I’m a DevOps Engineer focused on helping teams build efficient, automated, and reliable cloud environments. My goal is to simplify your infrastructure, speed up deployments, and keep everything running smoothly — so you can focus on building great products. I work with modern DevOps tools and technologies, including AWS, Docker, Kubernetes, Terraform, Jenkins, and scripting in Bash and Python. Here’s how I can help your business: - Build and maintain CI/CD pipelines for faster, safer deployments - Design and optimize cloud infrastructure for scalability and cost-efficiency - Implement monitoring, logging, and security best practices - Automate repetitive tasks to improve developer productivity If you’re looking for someone reliable who can turn complex infrastructure challenges into simple, automated solutions — I’m here to help. Let’s discuss how I can add value to your next project!

  • Linux
  • CI/CD
  • Jenkins
  • Python
  • Bash
  • AWS Application
  • AWS OpsWorks
  • AWS CodeBuild
  • Kubernetes
  • Terraform
  • Ansible
  • Docker
  • Docker Compose
  • TCP/IP
  • DNS
Seweryn K.

Opole, Poland

$85/hr
5.0
146 jobs

With over 15 years of extensive experience in the IT infrastructure domain, I am a Top Rated Plus Freelancer on Upwork, celebrated for delivering excellence across more than 100 projects globally. My expertise encompasses a broad spectrum of technologies, including cloud platforms such as Azure, GCP, and AWS, as well as mastery in Office 365 and Google Workspace, ensuring enhanced collaboration and operational efficiency. Throughout my career, I have excelled in roles such as CTO and Senior Infrastructure Engineer, showcasing a harmonious blend of strategic leadership and deep technical expertise. My portfolio includes sophisticated projects in Windows Server management, virtualization with VMware ESXi and Hyper-V, and implementing comprehensive backup solutions with Veeam Backup & Replication. I specialize in executing seamless migrations to cloud services, optimizing IT ecosystems for peak performance, and developing robust disaster recovery plans that guarantee business continuity. My commitment to operational excellence and compliance is evident in my successful leadership of SOC2 and HIPAA compliance initiatives. Armed with a Master’s degree in Computer Science and fluent English proficiency, I am prepared to confront and solve complex IT challenges, providing scalable, secure, and innovative solutions. I am dedicated to leveraging my extensive experience to contribute to the success of your next project, driving growth and technological advancement within your organization.

  • System Administration
  • Windows Server
  • Google Cloud Platform
  • Microsoft Windows PowerShell
  • Amazon Web Services
  • VMWare
  • Microsoft Hyper-V Server
  • Veeam
  • VMware Administration
  • VMware ESX Server
  • ConnectWise Automate
  • Amazon ECS
Ihor R.

Myslowice, Poland

$15/hr
5.0
12 jobs

**IT Specialist & Server Engineering Expert** With over 10 years of experience in the IT industry, I am a results-driven systems engineer specializing in server infrastructure, cloud technologies, and automation. My background includes working with large hosting companies where I excelled in troubleshooting performance issues, configuring servers, and integrating cutting-edge technologies into scalable environments. *Key Expertise*: - LAMP Stack (Linux, Apache, MySQL, PHP) - Linux Mail Stack: Exim/Postfix, Dovecot - Open-Xchange Products: PowerDNS, Open-Xchange, Dovecot Pro - Load Balancing: F5 Big-IP, HAProxy - CI/CD Pipelines: Jenkins, with deep knowledge of scripting Jenkins pipelines and automating workflows - Virtualization: Proxmox (LXC containers, VMs) - Automation: Ansible for streamlined configuration management - Containerization: Docker, Kubernetes for scalable microservice architectures - IaC: terraform I specialize in delivering optimized, secure, and reliable server solutions that meet the growing demands of modern IT environments. My passion for automation and continuous improvement ensures efficient workflows and infrastructure scalability.

  • System Administration
  • MySQL
  • Perl
  • Python
  • NGINX
  • DevOps
  • cPanel
  • Postfix SMTP Server
  • Dovecot
  • Kubernetes
  • Nagios Core
  • Zabbix
  • Bash Programming
  • PHP
  • Iptables
Vladyslav K.

Poddebice, Poland

$15/hr
5.0
1 jobs

Hi! I’m an experienced IT Administrator with a strong background in server management and network configuration. I help businesses and individuals ensure their systems are secure, stable, and fully optimized. My key skills include: Server Administration: Windows Server (AD, DNS, DHCP, GPO), Linux (Ubuntu, Debian, Rocky Linux) Networking & Security: VPN setup, firewall configuration, network troubleshooting, security hardening Virtualization: Proxmox, Hyper-V Backup & Disaster Recovery: Automated backup strategies, database backups, cloud storage solutions I provide solutions that save time, reduce downtime, and improve security. Whether you need a new server setup, network optimization, or ongoing IT support, I deliver professional results on time. Let’s connect and make your IT infrastructure more reliable and efficient!

  • Linux
  • Windows Server
  • Network Security
  • VPN
  • Microsoft Active Directory
  • Virtualization
  • Firewall
  • MikroTik RouterOS
  • IT Support
  • macOS
  • Veeam
  • Proxmox VE
  • Palo Alto Firewalls
Ivan K.

Krakow, Poland

$59/hr
5.0
57 jobs

Are your deployments slow, breaking at the worst moments, or costing more than they should? Is your team spending hours on manual releases instead of shipping features? If your CI/CD pipelines are fragile, your Azure infrastructure is growing out of control, or your DevOps processes exist only on paper, you are dealing with a problem that will not fix itself. I am a DevOps Engineer and Azure Architect with 10+ years of experience helping product teams and growing companies build cloud infrastructure that actually works. Whether it is a startup scaling fast or an enterprise team drowning in legacy pipelines, I come in, assess the real state of things, and build systems that are stable, automated, and cost-efficient. My primary expertise is Microsoft Azure and Azure DevOps, end to end. That means everything from designing multi-stage Azure DevOps pipelines and managing releases without downtime, to setting up Azure DevOps RBAC, securing environments, and integrating Azure DevOps with Kubernetes clusters running on AKS. I have built Azure DevOps workflows for teams of 5 and teams of 150, and the approach scales both ways. Every Azure DevOps implementation I deliver is built around real business goals, not just tooling checkboxes. Beyond Azure DevOps, I work across the full infrastructure stack. I design Cloud Architecture using Terraform for Infrastructure as Code, manage containerized workloads with Kubernetes and Docker, and implement Deployment Automation that removes human error from the release process. For data-heavy projects, I build pipelines with Azure Data Factory to handle ETL, orchestration, and integration between services. For teams building decentralized or blockchain-integrated solutions, I have worked with Azure Blockchain Service as part of broader Microsoft Azure infrastructure setups, combining it with the same security and governance standards applied across all environments. As an Azure Architect, I cover Cloud Computing governance, cost optimization, and FinOps practices, so your Azure bill reflects actual usage, not waste. I apply the same structured thinking to Network Security, Linux and Windows Server environments, and multi-cloud setups when needed. When projects require Amazon Web Services, I bring the same DevOps standards to AWS, including AWS DevOps pipelines, CI/CD automation, and infrastructure managed through Terraform. I also work with Google Cloud Platform for teams running workloads across multiple providers. AI Automation is a growing part of what I do. As more teams start integrating AI into their products and workflows, I help them connect those AI components to production infrastructure properly, with reliable pipelines, automated testing, and deployment flows that treat AI workloads the same way as any other service. I also collaborate closely with full stack developer teams to improve release processes, deployment reliability, and infrastructure scalability, making sure the gap between development and operations is as small as possible. What clients usually need help with: ✔ Stabilizing Azure DevOps pipelines and deployment workflows ✔ Building scalable Kubernetes infrastructure ✔ Migrating legacy infrastructure to Microsoft Azure ✔ Reducing cloud costs and improving DevOps efficiency ✔ Designing secure Cloud Architecture for growing products ✔ Automating deployments with Terraform and CI/CD ✔ Improving monitoring, security, and infrastructure reliability ✔ Implementing AI Automation into existing delivery workflows The full technology range I work with includes: Azure DevOps, Microsoft Azure, Amazon Web Services, Google Cloud Platform, Kubernetes, Docker, Terraform, Ansible, CI/CD, Git, SQL, Python, Linux, Windows Server, Azure Data Factory, Azure Blockchain Service, Cloud Architecture, Deployment Automation, Network Security, and more. Certifications: ✅ 8x Microsoft Azure Certified ✅ Kubernetes Certified ✅ Terraform Certified If your infrastructure needs structure, your pipelines need reliability, or your cloud costs are climbing without clear control, send me a message here on Upwork. Describe the situation and I will come back with a clear breakdown and concrete next steps.

  • Linux
  • Windows Server
  • Network Security
  • Microsoft Azure
  • Amazon Web Services
  • DevOps
  • CI/CD
  • Kubernetes
  • Terraform
  • Azure DevOps
  • Cloud Computing
  • Azure Blockchain Service
  • Docker
  • SQL
  • Git
  • Ansible
  • Python
  • Google Cloud Platform
  • Deployment Automation
  • Cloud Architecture
Daniel L.

Marki, Poland

$67/hr
5.0
3 jobs

Senior IT, Security & Compliance Manager | Enterprise Projects & Vulnerability Expert Hi there! With over 20 years of experience in IT, I’ve evolved from the trenches of system administration into a strategic IT management and compliance leader. For over a year, I have been spearheading enterprise-class project implementations and driving operational excellence for a market-leading, Top 10 European enterprise. I genuinely love solving complex challenges, ensuring robust security, and orchestrating teams and external vendors to make technology work seamlessly at an enterprise scale. What do I do? Build Teams & Lead ISO 27001 Implementations: I don't just manage ISO 27001 compliance hands-on; I can assemble and lead dedicated, cross-functional teams for both rigorous audits and end-to-end security framework implementations. Direct Enterprise Provider Operations: Act as the primary technical authority managing enterprise-level service providers, ensuring SLAs are met, vulnerabilities are resolved rapidly, and operations run smoothly. Govern Hybrid Infrastructure: Oversee and secure massive, complex environments spanning expansive On-Premises Data Centers and Microsoft Azure cloud architectures. Manage Vulnerability Lifecycles: Lead the end-to-end process of assessing, prioritizing, and mitigating infrastructure vulnerabilities to keep critical corporate environments locked down. Drive IT Management & Compliance: Align technical operations with strict corporate compliance frameworks, bridging the gap between high-level business strategy and technical execution. Oversee Automation & MDM: Guide the management of enterprise MDM solutions (Intune, Jamf) and workflow automation (PowerShell, Bash, Python) to maximize efficiency across the board. What have I achieved? Spearheaded complex, enterprise-grade project rollouts and managed third-party vendor relationships for a Top 10 EU company, neutralizing critical vulnerabilities across On-Premises and Azure setups. Led flawless ISO 27001 audits and successfully built specialized teams to execute comprehensive security implementations from the ground up. Successfully rolled out MDM systems that cut downtime by 70%. Automated processes, saving 20 hours of work every week and slashing human errors. Trained over 200 people in cybersecurity and IT administration – earning excellent feedback. Why work with me? I combine deep, hands-on technical expertise with strong executive-level management and team-building skills. Whether it’s assembling a squad for an ISO 27001 rollout, guiding external providers, or organizing complex hybrid IT operations, I bring calm to the chaos. I thrive on bridging the gap between technology, security, and people. If you’re looking for a leader who can build your security teams, organize your IT management, and drive enterprise projects to success, let’s chat. Together, we can tackle anything!

  • Computer Network
  • Compliance
  • Government Reporting Compliance
  • Information Security
  • Computing & Networking
  • Network Engineering
  • Architecture

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