Hire the Best Linux System Administrators
in the United Kingdom

More than 3,000 reviews on G2
Rating is 4.5 out of 5.
4.5/5
of Upwork by G2 peer reviewers
Dmitri G.

Romford, United Kingdom

$120/hr
5.0
70 jobs

Main expertise: - Linux administration. - Bash scripting. - Web server administration (Apache, Nginx). - Database programming and administration (MySQL, MariaDB, Sqlite, MS SQL, MongoDB, PostgreSql). - Active directory administration (OpenLDAP). - Blockchain administration. - Source version control (Git/GitHub/GitLab/Bitbucket/Bazaar/Launchpad). - Building backend applications using PHP, NodeJS. - CMS installation and configuration - Wordpress, Joomla, Magento, OpenCart, etc. - Shopping cart payment gateway integration. - Website speed optimisation. - SSL certificate installation.

  • Linux System Administration
  • Linux
  • System Administration
  • cPanel
  • Domain Migration
  • Plesk
  • Database Optimization
  • MySQL
  • SQL
  • PHP
Craig S.

Oxford, United Kingdom

$40/hr
4.9
39 jobs

🚀 AI Systems Architect for Business Automation, Efficiency, and Scale 🚀 I help businesses design and build agentic AI systems that automate processes, improve efficiency, reduce operational costs, and support growth. My approach is practical, meticulous, and built with scalability in mind from day one unless you specifically need a leaner MVP. I do not build gimmicks or fragile prototypes. I build systems that are designed to work in the real world, integrate properly with your business, and grow with you over time. Every project comes with its own unique challenges, and that is exactly what I enjoy most: solving difficult problems and turning them into clean, scalable systems that create real value. Whether you need AI agents, workflow automation, robust APIs, backend architecture, healthcare integrations, or secure infrastructure, I would love to help bring your project to life. 🤖 AI Automation Platforms and Agent Frameworks 🤖 I work with a wide range of modern AI and automation platforms to help businesses build practical systems that save time, reduce manual work, and create better customer experiences. My focus is not just on using AI tools for the sake of it. My focus is building systems that help businesses generate value, improve workflows. ✅ OpenAI ✅ Claude ✅ LangChain ✅ LangFlow ✅ n8n ✅ Node-RED ✅ OpenClaw ✅ Zapier I use these platforms to build: ✅ AI-powered customer workflows ✅ Lead qualification and inbound automation ✅ Internal business process automation ✅ Multi-step agent workflows ✅ AI assistants connected to business tools and databases ✅ Custom integrations between AI systems and existing software ✅ Automated sales, support, and operations pipelines ✅ Customized Agents & Tools ✅ Model Context Protocol Servers & Clients Here is how I typically use these tools in practice: OpenAI and Claude for advanced reasoning, structured extraction, customer interaction flows, internal assistants, and decision-support systems. LangChain and LangFlow for structured AI pipelines, agent workflows, retrieval systems, modular LLM applications, and scalable orchestration. n8n and Node-RED for workflow automation, system integrations, triggers, customer journeys, business rules, notifications, and connected automation systems. OpenClaw for projects where alternative AI tooling, orchestration, or custom agent infrastructure is needed as part of a broader automation stack. 🛠️ What I Help Businesses With 🛠️ ✅ AI agents to automate business processes ✅ Multi-agent systems and workflow orchestration ✅ API development and integrations ✅ Process automation and operational optimisation ✅ Scalable backend architecture ✅ Secure, containerised deployments ✅ Data pipelines, intelligent tooling, and structured systems ✅ Business systems that improve efficiency and customer experience 🔌 API and Communication Expertise 🔌 I build APIs and communication layers using: ✅ GraphQL ✅ WebSockets ✅ HTTP REST ✅ HTTP RPC ✅ gRPC ✅ Raw Protocol Buffers ✅ OpenAPI specification and documentation 🏥 Healthcare and Regulated Systems Experience 🏥 I am trusted in the public health sector by NHS OUH to deliver specialist development services involving the new Clinisys WinPath and HL7. I also work with: ✅ HL7 ✅ FHIR ✅ Patient-hospital communication systems ⚙️ Infrastructure, DevOps, and Systems ⚙️ ✅ Kubernetes ✅ Docker and containerd ✅ Docker registries including GitLab Registry and Harbor ✅ GitLab ✅ CI/CD pipelines ✅ Vector, SQL, NoSQL, and key-value databases ✅ Advanced Linux system administration ✅ Security-conscious architecture ✅ Database design of all kinds ✅ Containerisation across Linux and WSL, always with scalability in mind from the start ✅ Proxmox (Virtualization Platform) 💻 Primary Languages 💻 ✅ Rust ✅ Python ✅ JavaScript ✅ Dart ✅ CSS 🤝 What You Can Expect From Working With Me 🤝 ✅ Clear communication ✅ Fast turnaround ✅ High-quality engineering ✅ Scalable thinking from the start ✅ A strong problem-solving mindset ✅ Clean, maintainable systems built for long-term use I work quickly without compromising quality, and I care about building solutions that are worth deploying, not just worth demoing. If you are looking for someone who understands both the technical depth and the business value of AI systems, I would be glad to work with you. If you want, I can also tighten this into a more premium Upwork version that sounds a bit more high-ticket and polished for attracting bigger clients.

  • Linux
  • Docker
  • Python
  • SQL
  • Selenium
  • Web Scraping
  • AI Chatbot
  • Web Development
  • API Development
  • OpenAI API
  • AI Writing Generator
  • AI Bot
  • AI Consulting
  • AI Agent Development
  • LangChain
  • n8n
  • Automation
Volodymyr K.

Torquay, United Kingdom

$39/hr
5.0
25 jobs

Since 2004 I have been working in the IT sector. I started with the technical support of users. The last 15 years engaged in the administration of servers running under Windows and Unix-like operating systems. I have extensive experience in deploying software solutions for different tasks. I work with: Linux*, *BSD, Windows Server. WEB: Apache, Nginx, PHP. Database: MySQL, Postgress, MSSQL (OLAP). Monitoring: Nagios, Zabbix, Munin, Awstats, MRTG. And other famous (and not so) systems (Samba, Squid, ELK Stack, bind, ISC-DHCP, Sendmail, postfix, dovecot..)

  • Linux System Administration
  • CentOS
  • Linux
  • DevOps
  • Debian
  • Web Hosting
  • FreeBSD
  • Proxmox VE
  • Server Density Server Monitoring
  • Microsoft Windows
  • Administrative Support
  • Windows Server
  • Network Administration
  • Firewall
  • VMWare
Jakub L.

London, United Kingdom

$50/hr
4.9
16 jobs

I'm self motived linux system administrator with can do attitude. I have over 10 years of professional experience with a operating systems and system administrator. During my career I've been working with many different technologies and tools, that gives me ability to choose variety of solutions that meets customer expectations. What I can do: Linux Servers (RedHat, Debian) Shell Scripting (Bash/Perl) PHP/MySQL Linux Maintenance/Troubleshooting HAProxy Web Servers (Apache) Monitoring(Nagios/OML) and many others

  • Linux System Administration
  • Bash Programming
  • Perl
  • DNS
  • Nagios Core
  • DHCP
  • Virtualization
  • FTP
  • MySQL
  • Red Hat Administration
Maxin J.

Daventry, United Kingdom

$15/hr
5.0
59 jobs

Senior Linux System Administrator | DevOps Engineer | Cloud & Hosting Infrastructure Expert Hi, I’m Maxin, a hands-on Linux and DevOps professional with 10+ years of experience managing, optimizing, and securing server infrastructure across cloud, hosting, and enterprise environments. I combine deep technical knowledge with real-world troubleshooting skills, and I pride myself on delivering clean, stable, well-documented systems that just work. 🔧 What I Do Best: 🖥️ Linux & Server Management • Strong with CLI and GUI-based systems – RHEL, Rocky, AlmaLinux, Ubuntu, Debian • Experienced with server hardening, tuning, kernel-level debugging, RAID, LVM, and GRUB recovery • Comfortable with both panel-based (cPanel, Plesk, CyberPanel) and bare-metal servers ☁️ Cloud Platforms – AWS | Azure | GCP | OVH | DigitalOcean • Infrastructure setup and cost-optimized scaling • EC2, S3, IAM, VPC, Azure VMs, Blob storage, cloud networking • Multi-cloud and hybrid cloud management experience ⚙️ DevOps & Automation • Automation using Bash, Ansible, GitHub Actions, Jenkins • Proficient in CI/CD pipelines, deployment scripts, and auto-scaling environments • Strong experience with Docker, Docker Compose, and lightweight containerization • Beginner exposure to Kubernetes and Helm (primarily home lab) 🛠️ Scripting & Code • Expert in Bash, solid experience with Python (for utilities, automation), and PHP (for WHMCS and web tasks) • Cron job automation and proactive system reporting 🌐 Web Hosting & Panels • Apache, Nginx, LiteSpeed – full web stack setups and optimizations • Expert with cPanel, Plesk, CyberPanel, SolusVM, WHMCS billing systems • Email server configuration and tuning – Zimbra, Postfix, SPF, DKIM, DMARC • Domain & DNS management – Cloudflare, registrar panels, SSL certs 🔒 Monitoring, Security & Performance • Nagios, Zabbix, Grafana, Prometheus – alerting and performance dashboards • Security: OSSEC, SELinux, AppArmor, iptables, firewalld, Fail2Ban, WAF • Load balancing, failover design, and high availability (HA) concepts 🧰 Virtualization & Backup • VMware vSphere/ESXi, Proxmox, KVM – VM lifecycle management • Backup systems: Backblaze B2, AWS S3, Veeam, RClone setups for automation ✅ Why Hire Me? • Proven experience handling production environments with 99.9%+ uptime • Calm under pressure – capable of solving L3-level issues during on-call emergencies • Always document, automate, and simplify wherever possible • UK-based (Daventry), fluent communicator, open to both short- and long-term contracts • No sponsorship required – I’m on a dependent visa and can renew independently • Available for remote work or on-site visits within the UK Whether you're running high-traffic WordPress sites, custom web apps, or enterprise services, I’ll help you build reliable infrastructure, automate the boring parts, and keep your systems secure and performing at their best. I’ve worked with startups, agencies, data centers, and SaaS providers – and I bring the same dedication to every project, big or small. Let’s connect. I’d love to help you take the stress out of infrastructure.

  • Bash
  • Linux
  • DevOps
  • Database
  • Database Management
  • cPanel
  • CloudLinux
  • MySQL
  • Debian
  • Proxmox VE
  • Plesk
  • Scripting
  • Hosting Setup
  • Web Hosting
  • DNS
Conal M.

Londonderry, United Kingdom

$30/hr
5.0
38 jobs

I class myself as a strong technical all-rounder and have been helping to build businesses remotely for over 10 years. My background is in coding, system administration and client facing technical support, but over the years I have grown into infrastructure management with a business acumen. I pride myself on doing highly valued work, being a fast learner and making tech stacks work. My key personal strengths include a keen attention to detail, excellent troubleshooting skills and an easy-going demeanor that helps me build strong working relationships quickly.

  • Linux System Administration
  • System Administration
  • NGINX
  • Amazon Web Services
  • Microsoft Exchange Server
  • Cloudflare
  • Web Development
  • DevOps
  • Xen Project Hypervisor
  • Veeam
  • WebRTC
  • VMware Administration
  • JavaScript
  • PHP
  • Management Skills

How it works

Post a job for freePost a job

Tell us what you need. Create your own job post or generate one with AI then filter talent matches.

Hire top talent fast

Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.

Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

Payment simplified

Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.

Don't just take our word for it

How do I hire a Linux System Administrator in the United Kingdom on Upwork?

You can hire a Linux System Administrator in the United Kingdom on Upwork in four simple steps:

  • Create a job post tailored to your Linux System Administrator project scope. We'll walk you through the process step by step.
  • Browse top Linux System Administrator talent on Upwork and invite them to your project.
  • Once the proposals start flowing in, create a shortlist of top Linux System Administrator profiles and interview.
  • Hire the right Linux System Administrator for your project from Upwork, the world's largest work marketplace.

At Upwork, we believe talent staffing should be easy.

How much does it cost to hire a Linux System Administrator?

Rates charged by Linux System Administrators on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.

Why hire a Linux System Administrator in the United Kingdom on Upwork?

As the world's work marketplace, we connect highly-skilled freelance Linux System Administrators and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Linux System Administrator team you need to succeed.

Can I hire a Linux System Administrator in the United Kingdom within 24 hours on Upwork?

Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive Linux System Administrator proposals within 24 hours of posting a job description.