- Cyber Security & Penetration Testing: Vulnerability assessment, security auditing, and proactive defense strategies.
- Incident Response & Digital Forensics: Post-attack reconstruction, root cause analysis (RCA), and secure system recovery after a breach.
- Website Security & Hardening: DDoS & Brute force protection, Cloudflare, Sucuri, WAF, Imunify360.
- Self-Hosted AI Automation & Assistants: VPS setup, hardening, and maintenance of n8n, Activepieces, and OpenClaw — build unlimited AI workflows and run your own private AI assistant, fully self-hosted with all data on your server. No per-task fees, no third-party cloud. Security-first configuration (firewall, SSL, sandboxing, backups).
- Application Deployment & CI/CD: Self-hosted PaaS setup using Coolify — deploy full-stack applications, static sites, APIs, and databases directly from GitHub, GitLab, or Bitbucket. Automated SSL, Docker-based deployments, and one-click services (280+) on your own infrastructure. A secure, cost-effective alternative to Heroku, Vercel, and Netlify with full data ownership.
- Operating Systems (OS) Administration: Expert in Linux distributions: Ubuntu, CloudLinux, AlmaLinux, Rocky Linux, RHEL, and Debian.
- Web Server Management: Advanced configuration and tuning of NGINX, Apache, and LiteSpeed
- Website Performance & Speed Optimization: Specialist in Google PageSpeed Insights and GTmetrix (Mobile & Desktop tuning).
- Digital Tracking & Analytics: Expert setup of Google Tag Manager (GTM) and Google Analytics 4 (GA4), including custom event tracking and conversion setup for E-commerce.
- Hosting & Domain Administration: Migration, WHM/cPanel, StackCP, Webmin, Virtualmin, Cyberpanel.
- WordPress & WooCommerce: Website development (Elementor, Divi), maintenance, debugging, and malware removal.
- Object Caching & Database Optimization: Redis, Memcached, MySQL/MariaDB optimization.
- VPS & Dedicated Servers Configuration: AWS, Google Cloud, Digital Ocean, Hetzner, Contabo, Vultr, etc.
- DNS & Email Deliverability: Professional DNS management (SPF, DKIM, DMARC), Cloudflare Email Routing.
- Bulk Email Systems: Amazon SES, Mailgun, SendGrid, Postmark, Mautic, Sendy.
- Hosting Automation: WHMCS & Upmind (specializing in WHMCS to Upmind migrations).
- Content Protection: DMCA protection and SSL management.
- Service Excellence: 100% accuracy, fast response, and adjustable to all time zones.
Other:
Graphic Design: flyer, brochure, magazine, catalog, presentation, logo, font vectorization, preparing Files and Documents for Print (crop mark, trim line, bleed area, RGB to CMYK conversion, PMS Solid colors Pantone), Variable Data, Excel XML, minimalist design, wood engraving mockup, DST embroidery file conversion, Recover Corrupted videos, ads marketing
Photo Editing: manipulation, retouching, mockup, product photo editing, removal of background (hair, fur)
Video & Audio Editing: crop, noise reduction, warp stabilizer, montage, transitions, effects
My Resume:
-Disciplined, hard-working, responsible
-Used to having high responsibilities and constant improvement
-Good at adjusting to the team I'm in
-Extremely detailed, efficient, and quality work
Education:
- Electrical Engineering University of Niš, Serbia
Certificates:
- TryHackMe – Cyber Security
- Cisco CCNA (Network Associate Routing & Switching)
- Cisco End User: Network Security
- Ultimate AWS Certified Cloud Practitioner
- Proxmox VE 6
- Visual and Graphic Design
- Adobe Photoshop, Illustrator, InDesign, Premiere, After Effects
Amazon Web Services
WordPress
Web Server
Apache HTTP Server
LiteSpeed Web Server
NGINX
Redis
Web Hosting
Domain Name
DNS
Cloudflare
cPanel
WordPress Migration
Elementor
WooCommerce
Milutin K.
Belgrade, Serbia
$27/hr
4.9
546 jobs
I work full time as linux & hosting administrator. I love my job and I will always find time to listen, give advice and help you with your problems.
I'm behind all major migration projects in my company and I can use that knowledge to help you with your migrations, either migrating it myself or in role of organizer/consultant. I've successfully managed various cross platform migrations:
CPanel-Plesk
CPanel-Webmin
Plesk-CPanel
Direct Admin-CPanel
Custom/Unmanaged-CPanel
If you require training, I can prepare tests and plan training depending on needs (sales, support, clients).
What you should contact me for:
Domain/DNS/E Mail issues
CPanel/WHM projects (installation/configuration/upgrade, security enforcement, troubleshooting)
Migrations/domain transfers
WordPress projects (all non-design related tasks: upgrade, migration, troubleshooting)
Office 365
DNS
Plesk
cPanel
Technical Support
WordPress
Web Hosting
Domain Migration
Web Host Manager
Email Communication
Aleksandar S.
Belgrade, Serbia
$30/hr
4.7
25 jobs
I’ve been working with WordPress for more than 10 years, building websites from scratch, improving existing ones, and solving the technical issues that often stand between a business and a website that actually performs well.
My focus is on delivering well-built WordPress websites, along with the technical support needed to keep them stable, fast, secure, and easy to manage over time.
I also handle the parts many website owners struggle with once the site is live - hosting setup, website migrations, DNS, SSL, email configuration, Cloudflare, Bunny CDN, and general WordPress troubleshooting.
I support existing websites, troubleshoot complex issues, and make focused customizations when needed - always with the goal of keeping the website practical, maintainable, and easy to work with.
I value clear communication, attention to detail, and work that holds up over time. If you’re looking for a dependable WordPress professional who cares about long-term quality and takes the technical side seriously, I’d be glad to hear more about your project!
WordPress
Elementor
WordPress Website
WordPress Consultation
Website Maintenance
WordPress Migration
Troubleshooting
DNS
SSL
GoDaddy
Cloudflare
cPanel
Plesk
Email Deliverability
Web Hosting
Dejan D.
Belgrade, Serbia
$30/hr
5.0
108 jobs
⚡️⚡️⚡️TOP rated IT Specialist⚡️⚡️⚡️
Need quick IT support or a reliable expert for long-term projects?
Extensive background in system administration, server and network architecture, security, endpoint protection, and data center operations. Proven problem-solving skills and decisiveness enable effective direction and resolution of complex technical issues on a global scale, even under strict time constraints and budgetary limits. Assistance with securing IT environments (NIST, GDPR, NIS2, ISO 27001) or implementing infrastructure.
Here are some feedback:
- Excellent work. Very flexible and knowledgeable.
- So strong skill and very quick to help me with my vpn setting on windows server with AD integration. Will work with him again and again.
- Dejan's understanding of Windows Server Administration and AWS is amazing..
- Dejan, your knack for untangling Windows Group Policy and Domain issues saved our project. Top-notch work!
- Executed quickly, highly responsive. Great experience and a true professional.
- Windows server security - Very impressed with Dejan's work. Will hire him again.
- Dejan was great expert and help us a lot. He gave us a whole picture and advice what to do next. Thank him a lot !
- Dejan was very responsive and supportive! He was willing to take up topics of research that were new/ unfamiliar and troubleshoot issues. I would definitely recommend him!
- Very knowledgeable with VMWare, helped me get my server back online and added additional protections to prevent any further complications. Not to mention he was able to help with my situation right away! Will be hiring again with anything related to VMware.
- Dejan made a great and fast troubleshoot for our Windows Server 2012 R2. He has a lot of knowledge and experience. Our problem was solved under 30 minutes.
Linux
Network Security
Microsoft Windows
Microsoft Active Directory
Web Hosting
VMware vSphere
System Administration
VMware ESX Server
Server & Virtualization Software
Server Virtualization
Server Administration
Troubleshooting
Windows Server
Windows 10 Administration
IT Support
Milica K.
Bogatic, Serbia
$55/hr
5.0
22 jobs
Professional freelance SEO specialist with several years of experience in SEO optimization and blog content management for various industries. I am an SEO hybrid, with a holistic approach to website optimization, site accessibility, UX, content and site security.
Key Skills: SEO, Technical SEO, Analytics, Keyword research, On-Page SEO, Off-Page SEO, Content optimization, Content marketing, E-commerce SEO, Site accessibility, Site security, and Technical writing.
Certifications:
- HubSpot Academy: Content Marketing | SEO Certified
- SEMRush Academy: Content Marketing and SEO | Content Marketing Fundamentals | SEO Certified | Role of Content
- EMarketing Institute: Content Marketing | Blogging Certified
- Great Learning Academy: SEO Strategies
...
Technical SEO
On-Page SEO
SEO Strategy
Search Engine Optimization
SEO Audit
SEO Keyword Research
SEO Performance
Website Migration
Creative Writing
Content Marketing
Content Analysis
Djordje C.
Arandelovac, Serbia
$10/hr
4.2
25 jobs
My name is Djordje(George) Colic.
I live in Serbia.
I am windows and linux server system administrator. I have MCSA certificate.
For 8 years I was working as system administrator for Mcs systems from San Diego and Miami Lakes IT . This is remote job.
I heave experience in using ConnectWise and Ninja RMM as remote management tools.
I am logging in to remote networks via ConnectWise or VPN- L2TP/IPsec or OpenVPN and then I use RDP to login to server or any workstation.
I am giving support to customers via phone, ConnectWise , RDP or TeamViewer. This support includes their servers, workstations, printers , support with their dedicated applications , office 365.
I am giving suport to VOIP customers. They have AT&T Synpase or SkyTalk phone system. Synapse Gateways are PSTN 67010 or SIP 67070.
Routers: I was working with SonicWall , Peplink , Mikrotik routers .
I am in charge for the maintenance of customer’s and office servers and workstations .
For automation tasks I am using batch and powershell scripts.
Server OS: Windows Server 2016 or 2012. Workstations: windows 10 or 7.
Linux server OS: Red Hat . I am logging in to linux servers via SSH to do every day management tasks.
Virtualization: VMWare , HyperV.
Cloud: I have experience working in AWS .
Every network is Domain network with Domain Controller. For file server we are using Synology NAS where important documents are kept on network share. I am also using NAS as VPN server to access remote network.
I have knowledge of Java programming and power shell.
As DevOPS engineer , I was working for Avi . Our client had Ping Directory , Ping Proxy servers . There were different environments. Server OS: Red Hat Enterprise Linux Server release 7.9 .
I was logging into client network via SSH.
I have experience in managing linux servers.
Microsoft Active Directory
Windows Server
System Administration
Linux
Technical Support
Docker
cPanel
Microsoft Hyper-V Server
Computer Network
Amazon EC2
Network Administration
DevOps
Windows Administration
Windows 10 Administration
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