
Closed
Posted
Paid on delivery
Senior Linux Server Administrator — Long-Term (Ubuntu / Plesk / Docker / PrestaShop) Overview I am looking for a reliable and experienced Linux server administrator to take real ownership of live production infrastructure. The goal is long-term cooperation with one technically strong person who communicates clearly, works pragmatically, and takes responsibility for the systems they manage. Infrastructure • VPS 20 (Contabo) — n8n, Docker, Nextcloud, Vikunja, Uptime Kuma • VPS 30 (Contabo) — Plesk, WordPress, Email (Postfix, Dovecot, SpamAssassin) • VPS 30 (Contabo) — PrestaShop live shop (Nginx + Apache, Cloudflare, PHP-FPM) • Dedicated Backup Server (Interserver) — automated backups, Google Drive, NFS Your First Task — System Cleanup & Security Takeover The previous administrator left the systems in a partially configured and insecure state. Before anything else, you will: Access Cleanup • Remove all SSH keys, SFTP users, and credentials of the previous administrator across all servers • Remove any email accounts or system accounts created by or forwarding to the previous administrator • Rotate all relevant passwords (root, SSH, Plesk, SFTP, database) and confirm with documentation Open Technical Items to Resolve • Cloudflare: 2 domains were started but not finished — in total 8 domains have to be set up and configured • Cloudflare: fix caching configuration that is causing instability on live websites • OpenVPN Community Edition: full fresh installation; provide 4 .ovpn certificates — owner (full access), PrestaShop developer (restricted), Member Area developer (restricted), yourself (temporary — revoked on project completion) • SSH: restrict access on all servers — must not remain open to Anywhere (0.0.0.0/0) • Cron jobs: fix broken cron on backup server (/home/en8en/backup missing); notifications only on failure, not on success • SFTP: screenshot per server confirming active users — only PrestaShop developer and Membo developer • Email server: written proposal for migration from MX Guarddog to Rspamd (open source), including user experience impact, then implementation • PrestaShop server: complete remaining optimizations (e.g. TTFB currently 4.4 seconds) • Backup monitoring: notifications only on failure — applies to all servers Ongoing Responsibilities • Manage Ubuntu production servers, Plesk environments, WordPress and PrestaShop setups • Keep systems updated, patched, and secure; manage domains, DNS, SSL, and email configurations • Manage developer access (SSH / SFTP); diagnose issues independently using logs and monitoring • Understand backup systems and restore procedures; work carefully on live systems without downtime What Matters To Me • Reliability — do what you say, confirm only what is actually done • Proactive mindset — identify and communicate problems before they become incidents • Propose solutions, align with me before acting, then execute cleanly • No delegation — you must be the person doing the work; no third-party access without explicit written permission • Long-term cooperation — I am not looking for a one-time fix Working Model • Fixed price for Task 1 (system cleanup + all open technical items) • Ongoing work after Task 1: freelance / hourly — estimated 5–10 hours per month • All larger tasks discussed and agreed before execution • Updates submitted as Word documents with screenshots as proof of completion Please Include In Your Application • Short summary of relevant experience and similar infrastructure managed • General availability and typical response times • Confirmation that you are the person doing all the work • Your fixed-price offer and estimated hours for Task 1 • Your hourly rate for ongoing work after Task 1
Project ID: 40354619
98 proposals
Remote project
Active 13 days ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
98 freelancers are bidding on average $453 USD for this job

Hello, I hope you're well. I'm eager to assist you as a Senior Linux Server Administrator, ensuring your infrastructure is secure, efficient, and well-managed for the long term. I have extensive experience with Ubuntu, Plesk, Docker, and PrestaShop, which aligns perfectly with your requirements. To start, I'll conduct a thorough system cleanup and security overhaul, addressing all open technical items to stabilize and optimize your servers. My proactive approach ensures that potential issues are identified and resolved before they impact your operations, and I’m committed to maintaining direct, reliable communication. Could you share more about your specific priorities for the PrestaShop server optimizations? Are there any particular security protocols or tools you prefer for the ongoing management? Lastly, how soon would you like the initial cleanup and security tasks completed? Looking forward to supporting your infrastructure needs with precision and care. Best, Azeem Amin
$550 USD in 7 days
8.9
8.9

Hello, I will take full ownership of your four-server infrastructure, starting with the security cleanup and open technical items. For Task 1, I will remove all previous admin credentials, rotate passwords, lock down SSH access, deploy OpenVPN with scoped certificates, fix your broken backup cron, configure all 8 Cloudflare domains, and bring that 4.4s TTFB down on the PrestaShop server through PHP-FPM tuning and Nginx caching adjustments. For the email migration, I will prepare a written Rspamd proposal with rollback steps before touching anything live. I will be the only person doing the work — no delegation. Typical response time is under 2 hours during business days. Questions: 1) Are all servers currently accessible via Plesk, or do some require root SSH only? 2) For OpenVPN, do you have a preferred subnet layout for the restricted developer profiles? Ready to start whenever you are. Kamran
$270 USD in 10 days
8.3
8.3

Hello, I have 10 years of experience in managing Linux servers and infrastructure. I am confident in my ability to handle your systems with professionalism and care. I have extensive experience with Ubuntu, Plesk, Docker, and PrestaShop environments. I ensure stable and secure infrastructure while maintaining clear and frequent communication. My fixed-price offer for Task 1 is $250 and my estimated hours are 72. I charge $20 per hour for ongoing work. Regards, VishnuLal NB.
$250 USD in 1 day
7.8
7.8

With over a decade of hands-on experience in managing complex Linux server infrastructure, I've honed my skills to be methodical, proactively-minded, and reliable - all the qualities you're looking for in a long-term partner. My strong suit lies in Ubuntu, Plesk, Docker, and PrestaShop - key technologies driving your systems. To tackle your immediate needs, I'll conduct a comprehensive cleanup of your servers and institute stringent security measures. Then I'll dive into the open technical items which include resolving instability issues on the live websites and potential caching anomalies on Cloudflare among others. Drawing from my wide-ranging proficiencies including SSH restriction, fix chron jobs, Email server migration and more - I will skillfully address each task thus enhancing your system's reliability and efficiency. Considering the breadth of work involved, I propose a fixed price for Task 1 encompassing system cleanup and resolution of all open issues. As for ongoing work post Task 1, given the estimated time of 5–10 hours/month in your setup, my competitive hourly rate would ensure top-notch service without breaking the bank. With me as your dedicated server administrator, you have the guarantee of quality service from start to finish: no delegation or oversight - only direct management from me.
$250 USD in 30 days
7.6
7.6

Hello, Thank you for reaching out! It’s great to hear about your expertise as a self-motivated and dedicated PrestaShop Developer. Quality work and customer satisfaction are key to any successful project. If you have specific tasks or projects in mind, I’d love to discuss them further. Feel free to share the details, and we can connect to explore how we can collaborate effectively. Looking forward to your response! Best regards,
$500 USD in 7 days
7.8
7.8

Hello, I understand you need a strong Linux server administrator to take full responsibility for your live Ubuntu servers running critical services like Plesk, Docker, and PrestaShop. Your servers need clean-up and security tightening after the previous admin left things unfinished and insecure. I can systematically remove old access and rotate all passwords safely, configure Cloudflare correctly for all domains, install OpenVPN with the given user roles, and secure SSH and cron jobs. I will also optimize the PrestaShop server to reduce loading times and handle backup notifications properly. Going forward, I will keep your systems updated, monitor backups, manage developer access carefully, and communicate all changes clearly with documentation. Task 1 will cover the cleanup and all open technical items you listed, with ongoing work available on an hourly basis. I will be the sole person managing your environment, ensuring no delegation without your permission. Important questions to clarify: What current access credentials and documentation are available for all servers? Are there any existing automation or monitoring tools already configured beyond what you listed? Do you have preferred Cloudflare settings for caching and security, or should I recommend best options? Is there a specific backup retention policy or restore SLA to follow? For PrestaShop optimizations, are there any custom plugins or third-party services involved? Can you provide the current state of a
$750 USD in 23 days
6.9
6.9

With over a decade of experience in network and system administration, your infrastructure can benefit from my comprehensiveness and proactiveness. I have extensive experience with Linux servers and am proficient in Ubuntu, skills that align well with your project demands. Moreover, my familiarity with Docker, PrestaShop, Plesk and Cloudflare would allow me to resolve the open technical items swiftly and efficiently. Implementing OpenVPN Community Edition securely is also within my purview which ensures that your project will be handled by someone with precise knowledge. Furthermore, my approach is inherently value-oriented—I appreciate what matters most to you in this project: reliability, proactivity and a long-term commitment—which is exactly what I offer. You'll note that my fixed-price offer for Task 1 reflects that understanding of your project demands. With me handling this important role in your company, you gain an expert who combines technical acumen with a level-headed proactive mindset. Let's equipe you all you need!
$700 USD in 7 days
7.2
7.2

With over a decade of experience in Linux system administration, I am confident I can bring value and stability to your infrastructure. As an expert in AWS, GCP and Azure, I have managed complex systems like yours, utilizing Ubuntu, Nginx, Apache, and Plesk. My expertise in Docker and PrestaShop will be instrumental in cleaning up your compromised servers while ensuring a watertight security system going forward.
$500 USD in 1 day
7.0
7.0

I am an experienced Linux Server Administrator with a strong background in managing Ubuntu production environments, working with Plesk, Docker, and PrestaShop. I have successfully overseen live production infrastructures and am committed to taking ownership of systems, communicating clearly, and ensuring reliability and security. With expertise in handling complex infrastructure across VPS and dedicated servers, I am well-versed in tasks such as SSH/SFTP access management, email and cron job configuration, and server optimization. My recent projects involved Cloudflare configuration, OpenVPN setup, and PrestaShop server optimization, aligning with your needs. I am adept at diagnosing and resolving issues independently using logs and monitoring tools. I am interested in discussing this long-term opportunity further. Could you please provide more details regarding any specific challenges you anticipate in this setup? I am fully available for this project and assure completion of Task 1 with a focus on thorough documentation. My fixed-price offer for Task 1 is and my hourly rate for ongoing work is .
$750 USD in 5 days
6.8
6.8

Hello, I understand you need a Senior Linux Server Administrator to secure and optimize your Ubuntu, Plesk, Docker, and PrestaShop environments. I can handle the access cleanup, Cloudflare configurations, OpenVPN setup, SSH restrictions, cron job fixes, SFTP user management, email server migration proposal, PrestaShop optimizations, and backup monitoring. I'm confident I can bring reliability and pragmatism to your infrastructure. Regards, Parvesh M.
$250 USD in 3 days
6.3
6.3

Hello, I am confident in managing your Ubuntu/Plesk/Docker/PrestaShop infrastructure long-term. I will secure all servers, remove prior credentials, rotate passwords, configure Cloudflare for all domains, reinstall OpenVPN with proper certificates, restrict SSH access, fix cron jobs, optimize PrestaShop performance, and ensure backup monitoring triggers only on failures. All actions will be documented with screenshots. I have extensive experience managing VPS and dedicated servers with WordPress, PrestaShop, email, DNS, and backups. I work directly on systems, proactively identify issues, and execute solutions without delegation. Task 1 can be completed with a fixed-price proposal, followed by ongoing hourly support. Availability is immediate, with typical response times under 2 hours. I confirm all work will be performed personally. Fixed price and hours for Task 1: [insert offer]. Hourly rate for ongoing maintenance: [insert rate]. Clarification Questions: Are there any custom scripts or services on servers that must remain untouched during cleanup? Do you require full migration documentation for the email server transition to Rspamd? Thanks, Asif
$750 USD in 10 days
6.4
6.4

Hello, I have extensive experience managing Linux servers with Ubuntu, Plesk, Docker, and applications like PrestaShop and WordPress in production environments. I focus on clear communication, proactive problem-solving, and ensuring systems are secure, stable, and performant. I will personally handle the initial cleanup tasks including securing access, rotating credentials, fixing Cloudflare and OpenVPN configurations, and optimizing PrestaShop server performance. I am committed to long-term cooperation and will provide regular updates with thorough documentation and screenshots. Reliability and owning the work myself are priorities, and I am ready to propose practical solutions before acting. Thanks, Teo
$500 USD in 3 days
6.5
6.5

Hi there, I came across your project and I can see exactly what you need — a technically strong, reliable administrator who takes full ownership, communicates clearly, and gets things done right the first time. With 10+ years of hands-on Linux server administration experience managing Ubuntu, Plesk, Docker, PrestaShop, WordPress, Cloudflare, OpenVPN, Postfix, and Nginx environments, I am fully equipped to handle everything on your list. For Task 1, I will: > Remove all previous admin SSH keys, credentials, and accounts across all servers > Rotate all passwords and document everything with screenshots > Complete all 8 Cloudflare domain setups and fix caching issues > Install OpenVPN fresh and generate 4 restricted .ovpn certificates > Restrict SSH access, fix broken cron jobs, and resolve SFTP user cleanup > Deliver a written Rspamd migration proposal before touching the email server > Resolve the PrestaShop TTFB performance issue I work alone. No delegation. No third-party access without your written approval. I am available daily with response times under 4 hours. All completed work will be documented in Word reports with proof screenshots, exactly as you requested. This is the kind of infrastructure I manage regularly. I am not here for a quick fix — I am interested in long-term cooperation. Let's connect and discuss the fixed price for Task 1. Best regards, Hitesh Goyal
$300 USD in 8 days
7.0
7.0

Hi The real challenge in your setup is not just fixing individual issues, but stabilizing a fragmented multi-server infrastructure where security gaps, misconfigured services, and inconsistent access control can lead to serious production risks. I have extensive experience managing Ubuntu servers, Plesk environments, Docker stacks, Nginx/Apache setups, and production systems including PrestaShop, WordPress, and email servers. I’ve handled similar takeovers where I performed full credential rotation, SSH hardening, Cloudflare configuration, VPN setup, and performance optimization under live conditions. I would approach Task 1 with a structured audit and execution plan covering access cleanup, firewall hardening, OpenVPN setup, cron repair, Cloudflare stabilization, and PrestaShop performance tuning (TTFB, PHP-FPM, caching layers). I also have experience migrating email stacks to Rspamd, implementing secure backup monitoring, and ensuring all changes are documented with proof. My focus is long-term ownership, system reliability, and clean, verifiable execution without downtime or loose ends. Thanks, Hercules
$500 USD in 7 days
6.4
6.4

With over two decades of experience designing and developing digital ecosystems, I am confident in my abilities to handle your Linux server administrator needs. My expertise extends far beyond coding; as a digital systems architect, I have a deep understanding of the interplay between various components and take a pragmatic approach to problem-solving. In line with your project’s requirements, I have successfully managed similar infrastructures in my 20+ years in the field. My skills span from Python and PHP to HTML5 and CSS3, with extensive experience in WordPress, among other platforms. These skills equip me well to handle the breadth of tasks you need resolving, from fixing cron on the backup server to optimizing your PrestaShop setup. Moreover, collaborating long-term is essential for me too. This is why maintaining consistent communication and swift response times are top-priorities for me. In terms of price structures, I am happy to work with an hourly rate that can be estimated between 5-10 hours per month after Task 1 which shall be concluded at a fixed-capacity price specified by you. Overall, I believe I am the best-fit solution you need for this challenging project as I mirror your values of reliability, autonomy and a proactive mindset. Let's turn your production infrastructure into a robust system together.
$500 USD in 7 days
6.7
6.7

Hello my name is Nikos and Im working on the Linux server administration field for the past 12 years. Over these years I worked for two web hosting companies as a Senior Administrator managing their servers & providing customer support. I have extensive experience with the following control panels: CPanel, Plesk, Directadmin, SolusVM, VestaCP and many more. I can do what you are asking for. Message me for more details. Regards
$250 USD in 1 day
5.8
5.8

Hi There What you need here is not a generic server admin, but someone who can take controlled ownership of live infrastructure, clean up inherited risk, and document every change with proof. I can handle the full Task 1 scope across Ubuntu, Plesk, Docker, PrestaShop, Cloudflare, VPN, backup monitoring, SSH hardening, credential rotation, and performance fixes without careless downtime or vague updates. I work hands on myself, not through third parties, and I am comfortable managing production systems where security, access control, and rollback discipline matter just as much as the fix itself. Before I quote the most accurate fixed price and hours, I would want to verify whether there is already a full inventory of current users, domains, services, and server access so the takeover starts cleanly and nothing critical gets missed. best regards Waqas A.
$500 USD in 7 days
6.1
6.1

Hi, I am a Linux Administrator having more than 10 years of experience. I can manage your server infrastructure. Looking forward for your response. Thanks Ashish A.
$500 USD in 7 days
6.3
6.3

Hi, I’m available to start right away. I have strong experience in Linux (Ubuntu), Plesk, Docker, Cloudflare, Nginx/Apache, email servers (Postfix/Dovecot/Rspamd), and managing multi-server production environments with security hardening and performance optimization. I’ve worked hands-on taking over unstable infrastructures, and I can fully clean and secure your servers, fix Cloudflare and caching issues, set up OpenVPN and restricted SSH access, stabilize backups and cron jobs, and optimize your PrestaShop stack while documenting everything clearly with proof. You can expect clear communication, fast turnaround, and a high-quality result that fits seamlessly into your existing workflow. Best regards, Juan
$500 USD in 3 days
5.8
5.8

Worked with all kind of servers and all panels since 2007 And currently working as linux system administrator If you need to start as soon as possible contact me And tell me more details about what you want to Tell the time and cost accurately, please contact me now, looking forward to work with you Best regards
$250 USD in 1 day
5.7
5.7

Neckarsulm, Germany
Member since Apr 7, 2026
$8-15 USD / hour
$10-200 USD
₹1500-12500 INR
₹12500-37500 INR
$5000-10000 USD
$250-750 AUD
$30-250 CAD
₹12500-37500 INR
$250-750 USD
$15-25 USD / hour
₹1500-12500 INR
$30-250 USD
$30-250 USD
€250-750 EUR
₹1500-12500 INR
$15-25 USD / hour
$250-300 AUD
₹12500-37500 INR
$10-30 AUD
$250-750 USD