Hire the Best Sophos Sophos UTM Specialists
in Serbia

I'm network and VOIP engineer with 11 years of experience. Over time I've completed the following certificates: 1. CCNA 2. CCNA security 3. CCNA wireless 4. CCNP - Not certified yet 5. MTCNA 6. MTCRE 7. Linux Essentials 8. LPIC-1 9. Sophos UTM Engineer 10. dCAA 11. 3CX I have experience with the following vendors: Cisco Cisco ACI MikroTIK Sophos UTM Fortinet Checkpoint HP Ubiquiti - Unifi Juniper Alied Telesis PfSense I can help you with: Router configuration WAN Failover VPNs - IPSec, L2TP, OpenVPN etc... Routing - Static, Dynamic including OSPF and BGP MPLS - L3VPN IPSec Firewall - Filter rules, mangle rules etc... FHRP VRF QoS Switch configuration Vlans FHRP Etherchannel Port security Voice Vlan Trunks Troubleshooting Wireless configuration Cisco WLC and LWAPs Ubiquity Unifi - AP, Switch, USG MikroTIK - I have probably configured 500+ MikroTIK devices VOIP 3CX PBX deployment on prem and in cloud Phone management SIP Trunk management DID management IVR Queues Ring Groups etc... Email security Sophos UTM email filter Spam Titan email filter DNS - SPF, DKIM, DMARC Reach out if you find this interesting and we can discuss the details about your project.

Network & IT Infrastructure Expert | Mikrotik | VPN | Linux | Cloud With 25 years of experience in IT infrastructure and network engineering, I specialize in designing, securing, and optimizing network systems for businesses of all sizes. Whether you need a reliable VPN solution, a secure network setup, or an optimized server infrastructure, I can help you achieve your goals efficiently. What I Offer: Mikrotik & Network Configuration – Routing, Firewall, VLANs, QoS, Wireless VPN & Secure Networking – WireGuard, OpenVPN, IPsec, GRE tunnels Linux System Administration – Ubuntu, CentOS, Debian, server automation Cloud & Backup Solutions – Veeam, Rsync, ZFS, Proxmox, Disaster Recovery Server & API Hosting – OpenStreetMap servers, self-hosted solutions Troubleshooting & Performance Optimization – Network monitoring, security hardening Web Development – Next.js websites, WordPress to Next.js migrations I have worked with businesses, startups, and enterprise clients to ensure their IT infrastructure is secure, scalable, and high-performing. My approach is straightforward – I analyze, optimize, and deliver solutions that just work. Let’s connect and discuss how I can help with your project!

👑 Expert Vetted - Top 1% of all Upwork Freelancers - Top Rated Network and Cloud Engineer. - 300+ projects and 7000+ Upwork hours up to date. - 600k+ earned on Upwork. Networking vendors I have worked with: * Cisco, Mikrotik, Fortigate, Ubiquiti, Vyatta, VyOS, pfSense, Sonicwall, Sophos XG, Watchguard, Brocade, Ruckus, HP, Huawei, HPE, Aruba, Arista, etc. Cloud Skills: Terraform (AWS, Azure, GCP) AWS - VPC, EC2, RAM, R53, LB, S3, IAM/SSO, various NGFWs, Terraform. Azure - AD, AADDS, S2S VPNs, VMs, LB, NGFWs, Azure Hub-Spoke, Terraform. GCP - Cloud Compute, Security, NGFWs, Terraform. Digital Ocean Vultr ...

⚡️⚡️⚡️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.

Designing, crating, administering and troubleshooting network environments are my main skills. For last 10 years I passed the road from Junior System Admin to Senior System Engineer working in couple network project and support companies. Windows Servers, HyperV, System Center, Office 365, Azure, Domains, all kind of server roles and features, Exchange, Backup, Virtualization, SAN, NAS etc. are some of the fields where I'm most experienced. For last four years I work as full time Senior System Admin in IT Support company from Germany, so my skills and knowledge are in a grate shape. At the moment I'm recognized as Certified Microsoft MCP, MCITS (HyperV), MCSA, MCSE (Server Infrastructure), MCSE (Cloud Infrastructure) and VMWare VCA-DCV6. My English is fluent in writing and speaking and also I can speak and write German on a level B2, and my native language is Serbian. This gives me ability to provide support on a systems with different language in use. I'm a part-time and ad-hock freelancer and I can give support in US and Europe business hours.