With 12+ years of experience, I specialize in Windows, Linux, Network & Virtualization including VMware, Hyper-v, Proxmox and enterprise IT management to deliver secure, high-performance, and scalable infrastructures. 💻 Services that, I Provide: 1️⃣Windows Server, Active Directory, Entra ID, Intune, Microsoft 365 & G Suite 🔹 Windows Server (2012, 2016, 2019, 2022)- Active Directory setup and administration, Users/Groups, OU design, GPO, trusts 🔹 Core services: DNS/DHCP, WSUS, WDS, File/Print servers, permissions/ACLs, SMB shares 🔹 High availability: Failover Clustering, HA/DR planning and implementation 🔹 Identity & access: Microsoft Entra ID tenant management, identity integration (hybrid identity), conditional access basics 🔹 Endpoint management: Microsoft Intune device enrollment, compliance policies, configuration profiles, app deployment, security baselines 🔹 Security & certificates: AD CS / PKI, certificate services, SSL/TLS configuration and hardening 🔹 Microsoft 365 and Google Workspace (G-Suite) admin support (accounts, policies, mail flow basics, and tenant operations) 🔹 Active Directory Certificate Services (AD CS) & Public Key Infrastructure (PKI) – Deployment & Management 🔹 Web & app hosting: IIS installation/configuration, IIS Load Balancing, IIS WebFarm ARR, SSL binding, security hardening, and IIS troubleshooting 2️⃣ Linux & Web Server Administration 🔹 Linux Administration – RHEL, Ubuntu, Debian, CentOS 🔹 Service Management – Samba Server, Mail server, Zimbra, GIT, NFS, ISCSI, FTP, SFTP, Elasticsearch, Redis, LDAP, Docker, Nodejs, Express, NIC teaming 🔹 Database Management – MySQL, MariaDB, MongoDB, Percona, XtraBackup, PostgreSQL, Mirroring/High Availability. 🔹 Web Servers – NGINX / Apache (LEMP/LAMP), HAProxy, reverse proxy, SSL/TLS 🔹 Security: FirewallD, SELinux, UFW, ACL, SSH, hardening 🔹 Automation ( Bash, CHEF, Ansible, Terraform, Python ) 3️⃣VMware, Proxmox & Hyper-V Virtualization Expertise 🔹 VMware ESXi, vCenter, NSX, vSAN & Horizon deployment and management 🔹 High Availability, DRS, D-Switch, VLANs,& AD integration in VMware 🔹 Proxmox with LXC/KVM, Ceph storage & HA cluster configuration 🔹 Hyper-V setup with clustering, Live Migration, Storage Spaces Direct & Azure hybrid integration 🔹 iSCSI/Fibre Channel SAN, snapshot management & storage optimization 🔹 Strong in VM hardening, disaster recovery & performance tuning 4️⃣ Backup, Storage, Database, & Disaster Recovery 🔹 Veeam Backup & Replication, hardened Linux repo, offsite backup strategy, immutability planning 🔹 Veeam Cloud Connect, Veeam Cloud Connect Replication, Veeam Service Provider, Veeam Backup as a service (BaaS), Veeam DR as a Service (DRaaS) 🔹 Expertise in Synology NAS, QNAP, TrueNAS, & Nextcloud for secure storage 🔹 Backup, replication, failover, & DR strategies for BCP 🔹 Database admin for MSSQL, MySQL, PostgreSQL,MariaDB, Percona, Mirroring/High Availability, XtraBackup 5️⃣Networking, Firewalls, VPN & Security 🔹Routing & Switching (Cisco, Juniper, MikroTik , Huawei) 🔹 Routing/switching concepts, VLANs, trunking, NAT, LAN/WAN 🔹L4/L7 Firewall Policy Configuration (SonicWall, Sophos, Cisco ASA, Fortinet) 🔹VPN (IPSec, OpenVPN, WireGuard), Load Balancing & HA 🔹SD-WAN Deployment & NSX / NSX-T Micro-Segmentation 🔹Network Monitoring & Optimization using SNMP, NetFlow, Syslog 6️⃣ System Hardening, Security posture, endpoint/SOC tooling & Cloud 🔹 AWS: EC2, S3, IAM, VPC, Security Groups/NACLs, Route 53, Load Balancer, RDS, SNS/SQS 🔹 Skilled in SSL/TLS, clustering, & thread pool tuning 🔹 Strong in log analysis, performance tuning & system hardening 🔹 EDR: SentinelOne, CrowdStrike (deployment support, policy alignment, troubleshooting) 🔹 SIEM / Log management: Wazuh, GrayLog, Splunk, ManageEngine Log360 (log ingestion basics, alerting workflows, dashboard/reporting support) 🔹 Baseline hardening & hygiene: patching approach, access control, audit readiness, and incident-support workflows 🔹 Hardening Windows/Linux systems with Windows Firewall, Firewalld, IPTables, GPOs 🔹 Implementing NIST & CIS benchmarks, audits, patch and ISO-27001,PCI-DSS, HIPAA compliance 🔹 Python/PowerShell/Bash/Ansible scripting for automation 7️⃣ Monitoring, RMM + Documentation 🔹 Monitoring: Zabbix, Grafana/Prometheus, Nagios, AppDynamics & New Relic 🔹 RMM & MSP tooling: Syncro, ConnectWise (Automate/Manage where applicable), NinjaOne (Ninja RMM) for endpoint monitoring, patching, alerting, and remote support workflows 🔹 Strong focus on clear documentation, diagrams, SOPs, Change Management, reporting, and security posture documentation (controls, checklists, and runbooks) 🚀 Why Choose Me? ✔ 12+ years of enterprise IT experience in Windows, Linux, Virtualization & Cloud ✔ Proven expertise in troubleshooting & optimizing IT infrastructures ✔ Strong security focus – Ensuring system stability & compliance ✔ Efficient automation – Using Python, PowerShell & Bash scripting

Hi, I am a system administrator with 6 years experience in Information technology. My areas of expertise are in Cloud Migration, M365 administration, Exchange server. Microsoft Azure.

With 9+ years of hands-on experience, I specialize in managing and supporting both Windows and macOS environments, server infrastructure, cloud migrations, and email systems. Whether you’re a startup, SMB, or growing enterprise, I provide secure, scalable, and efficient IT solutions tailored to your needs. Technical Expertise Includes: • Operating Systems: Windows Server 2008 R2 / 2012 R2 / 2016 / 2019 Windows 7 / 8 / 10 / 11, macOS • Email & Collaboration Tools: Microsoft Exchange 2010–2019, Outlook 2010–2019 Office 365 & Microsoft 365 (Az-104 Azure Certified) Google Workspace (G Suite): Gmail, Drive, Calendars, Admin Console Hybrid Exchange Deployment | PST & Mailbox Migrations | SSO & DirSync • Cloud & Directory Services: Azure Active Directory (MCP Certified) On-prem to Cloud sync and hybrid environments Office 365 Wave upgrades and tenant transitions • Virtualization & Backup: VMware Workstation, Hyper-V Data Backup & Recovery (local and cloud-based solutions) • Support & Troubleshooting: Desktop/Technical Support – Windows & macOS Email Configuration, DNS & Domain Setup Security Hardening, MFA, and Account Recovery

I build production AI systems and SaaS products. Not prototypes — real software that runs businesses. As the founder of two tech companies, I've shipped everything from AI voice receptionists handling live customer calls to analytics dashboards processing real-time operational data. I work with founders and operators who need a technical partner, not a task-taker. WHAT I BUILD AI Agent Systems Custom autonomous agents using Claude, OpenAI, and open-source models. Multi-agent architectures with voice interfaces, tool use, persistent memory, and real-world integrations. I've built agents that answer phones, qualify leads, manage schedules, and run business operations 24/7 — not chatbots, real autonomous systems. Voice-First Applications Production voice AI using Twilio, ElevenLabs, and Hume with custom STT/TTS pipelines. Phone systems, conversational interfaces, and voice-controlled business tools with sub-second latency. Currently powering live AI receptionists for SMBs across multiple industries. SaaS Products (Full Lifecycle) From zero to launch and beyond. I've built and scaled subscription platforms, analytics dashboards, and workflow tools serving real users. Architecture, development, deployment, and iteration — I own the entire stack and think like a founder because I am one. Dashboards & Analytics Platforms KPI dashboards, real-time monitoring, data visualization, and business intelligence tools. Clean UI, fast queries, actionable insights. Built for operators who need to make decisions, not stare at charts. MY STACK React, Next.js, TypeScript, Tailwind CSS, Node.js, Python, FastAPI, PostgreSQL, Supabase, Vercel, Railway, AWS, Docker, Stripe, Clerk, Twilio, ElevenLabs, Hume AI, Claude API, OpenAI API HOW I WORK • I scope honestly. If it'll take 3 months, I'll say 3 months. • I communicate proactively. You'll never wonder what's happening. • I build for production from day one. No throwaway code. • I think like a founder. Business context drives my technical decisions. BEST FIT FOR • Founders who need a technical co-founder without giving up equity • Companies building AI-powered products or internal tools • Teams that need senior architecture + hands-on execution • Long-term engagements where I own outcomes, not just tickets NOT A FIT FOR • WordPress or template customization • Projects under $5K • Hourly micromanagement with daily standups for simple tasks I'm selective about the projects I take on. If we're a good fit, I'll be the best hire you make this year.

Hi there! I'm Nigel, a results-driven System Engineer with over 9 years of experience specializing in IT infrastructure, security, and automation. Based in Belize City, I have a proven track record of delivering innovative IT solutions for MSPs, ISPs, and FinTech, supporting both global and local clients. My passion lies in leveraging technology to optimize systems, enhance security, and automate processes, ensuring businesses achieve their objectives efficiently and securely. I thrive on solving complex technical challenges and aligning IT strategies with business goals to deliver tangible results. --- 🌟 Key Achievements - Reduced Manual Auditing Time by 50%: Implemented automation scripts (PowerShell, Python) that drastically cut down repetitive tasks and compliance checks for a major MSP. - Increased Security Compliance: Strengthened client security posture, leading to improved threat detection and adherence to industry standards. - Decreased Incident Response Time: Reduced incident detection and response times by leveraging automated alerting and SIEM integrations, resulting in a quicker turnaround for resolving potential threats. --- 🌟 Top Skills Automation & Security Enhancement - Scripting with PowerShell, Python, Microsoft Power Automate - Security auditing (ISO 27001, CIS 1 and 2), vulnerability management, patch management System Administration & Implementation - Microsoft Azure, Windows, Linux, VMware, Proxmox, Hyper-V - Hybrid cloud deployments and cybersecurity measures Network Administration & Troubleshooting - Cisco (IOS, ASA, FTD, FMC, Meraki), Mikrotik (Winbox), advanced routing & switching - LAN, WAN, WLAN, secure VPN setups Technical Support & MSP Tools - PSA: ConnectWise, halo, Autotask - Remote: Screenconnect, LogMeIn.com, Splashtop - RMM: NinjaRMM, N-able RMM, Kaseya Datto RMM, Jamf, Addigy Identity & Access Management - IDP: Entra ID, Okta, Google Identity, Ping Identity - IAM: CyberArk, AWS, SailPoint Endpoint Protection & Security - EDR/XDR/MDR: Netsurion XDR, Blackpoint MDR, Huntress MDR, SentinelOne EDR - SIEM: Blumira, QRadar, Microsoft Sentinel, Elastic SIEM, Wazuh - SOAR: Shuffle.io --- 💡 Technical Skills - System Administration: Linux, Windows, VMware, Proxmox - Scripting & Automation: Bash, PowerShell, Python - Networking: VLANs, subnetting, wireless networking - Cloud & Security: Microsoft 365, Google Workspaces, Active Directory, Entra ID, Okta - IT Security & Compliance: Threat detection, ISO 27001, vulnerability assessments --- 🎓 Certifications - Cybersecurity Essentials – Cisco - Google Technical Support Specialist - Cisco IoT - Cisco Meraki CMNA 1 & 2 - Aruba Product Specialist - Currently Studying for Microsoft Certified: Identity & Administrator Associate Certification SC-300 --- 💼 Work Experience Security Engineer – Managed Security Service Provider (MSSP) - Threat & Vulnerability Management - Monitoring & Incident Response - Security Information & Event Management (SIEM) - Cloud Security & Compliance Technical Alignment Engineer – Managed Service Provider (MSP) - Automated auditing tasks, reducing workload by 50%. - Enhanced security posture via compliance checks & vulnerability assessments. - Introduced cutting-edge technologies (e.g., advanced EDR tools, SIEM solutions) to improve service delivery. Network Administrator - MSP - Designed wireless networks for IHG Hotels, and managed IPTV infrastructure. System Administrator – MSP - Managed large-scale IT infrastructures (both on-premises and cloud). - Handled regular security audits, incident response, and proactive monitoring to maintain near-zero downtime. Information Technology Specialist – Software Industry - Oversaw software deployments & troubleshooting. - Collaborated with dev teams to improve continuous integration and operations. Information Technology Officer – Finance/Tech - Responsible for IT security & infrastructure in high-stakes environments. - Conducted regular risk assessments to meet stringent compliance and regulatory standards. Network Technician – ISP - Installed & configured network devices for high-speed internet. - Troubleshoot complex network issues, ensuring minimal service disruptions and maximum reliability. --- 🌟My Unique Edge🌟 I bring a rare blend of hands-on technical expertise, strategic thinking, and a security-first approach, ensuring that every solution is robust, scalable, and fortified for the long haul. I’m passionate about continuous learning and staying on top of the latest technologies so I can help you stay ahead of the curve.

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.

As a seasoned DevOps engineer, I have extensive experience and will be happy to help you with cloud platforms such as Azure and AWS, GCP, container orchestration with Kubernetes, and containerization with Docker. My deep knowledge of Terraform allows me to optimize infrastructure provisioning and management. I specialize in creating and optimizing CI/CD pipelines to ensure faster, more reliable, and more efficient development and deployment cycles. My skills: ☁️ Cloud Providers: ✅ - Azure ✅ - AWS ✅ - GCP 💻 Operating systems: ✅ - Linux ⚓ Containerization and orchestration: ✅ - Docker ✅ - Kubernetes ✅ - Helm 🛢️ Database servers: ✅ - MySQL ✅ - SQL lite ✅ - Mongo DB ✅ - SQL Server ✅ - Maria DB ♾️ CI/CD & IaC: ✅ - GitHub Actions ✅ - Azure DevOps ✅ - GitLab ✅ - Terraform ⌨️ Programming and scripting languages: ✅ - PowerShell ✅ - Python ✅ - Bash

A dynamic and self - motivated System and Network Administrator aspiring for a bright and challenging career in the field of System Administration and Networking Technology which would enable me to upgrade myself with emerging trends and technologies. More than 12 years' experience in working with MSPs to provide remote technical support to end users. Responsible for completing OnBoarding tasks with new clients and deploy all the RMM tools that are required for remote management. Familiar with Office 365 configuration, creating mailboxes, resetting passwords, troubleshooting office 365 activation issues. Good hands-on RMM tools like Datto RMM, ConnectWise RMM, Solar-Winds. Kaseya, Ninja RMM. I have good understanding of ticketing systems like Autotask, ConnectWise manage, Zoho, Freshdesk, Kaseya, Zendesk, etc. Familiar with cloud backup tools like Intronis and Autotask workplace. Responsible for deploying backup agents and configure backup according to client infrastructure needs. Also, responsible for monitoring and troubleshooting failed backups. (Veeam Backups, etc) More than 12 years' experience in providing phone based, chat & email support to international clients. Have been responsible for collaborating with third party vendors and end users to resolve issues related to application support and hardware warranty. Have contributed to improving the company's documentation work by modifying changes as and when they occur and create documentation for newly resolve issues. I have good hands-on documentation tools like IT glue, Hudu cloud, Confluence, Podio, etc. I have worked on after-hours support projects that included monitoring alerts and respond to emergency issues as and when they arise.

I'm a SQL Server and Technical Support Specialist with more than 8 years of experience in database administration, software support and data solutions. I consider myself as someone with strong analytical, problem-solving and organizational skills. I also have solid experience in troubleshooting, operational data analysis, production systems support and continuous process improvement. I’m productive, hardworking and eager to grow while helping other companies improve their systems and operations. My Areas of Expertise: - Database administration - Technical support and troubleshooting - SQL development - Reporting and data analysis - Operational and production data analysis - Process automation - Continuous improvement - Web and desktop application support - API integration Tools I'm well versed in or familiar with: ✔ Microsoft Office (Word, Excel, PowerPoint) ✔ SQL Server (T-SQL, SSRS, administration) ✔ C# / .NET Framework ✔ Python ✔ MySQL ✔ PostgreSQL ✔ Power BI ✔ GitHub ✔ IIS ✔ Windows Server / PowerShell Please invite me to look at your job or project. I would love to send you a proposal and show you how I can help improve your operations, solve technical issues and support your systems with reliable and efficient work. I hope to hear from you soon.

✅ Devops ✅ Security ✅ Kubernetes ✅Cost Optimization ✅ Migration ✅ Automation Welcome! I am a Certified DevOps Expert focusing on optimizing cloud infrastructure for enhanced efficiency and security. With expertise in DevOps, Kubernetes, APIs, Terraform, App Service, Active Directory/Entra ID, Advisor, Defender, and Security, I can deliver exceptional results for your Azure projects. Key Skills and Specializations: 🔹 DevOps Excellence: Empowering your software development lifecycle with cutting-edge DevOps methodologies, I specialize in CI/CD pipelines, Docker containers, Bicep, ARM templates, Functions, Key Vault, and Logic Apps. 🔹 Administration Mastery: Harnessing the full potential of Azure, I am adept at Azure AD, RBAC, and Virtual Desktop Integration. From VMs, Disk Encryption, and Scale Sets to AKS, ACI, Azure App Service, and storage solutions, I ensure seamless management of your Azure infrastructure. 🔹 Monitor and Optimization: Leveraging the power of Azure Monitor, I enable you to extract meaningful insights through efficient log querying, robust backup and disaster recovery setups, cost optimization strategies, and comprehensive utilization of Application Insights. 🔹 Robust Networking and Security: Safeguarding your cloud environment is my priority. I bring expertise in designing and implementing secure networking architectures, including Public/Private DNS, NSG, Firewall, WAF, VPN, LBs, and Application Gateway. 🔹 I possess strong scripting capabilities in Bash, PowerShell, and Python, enabling me to automate tasks, configure systems, and streamline deployments efficiently. My scripting expertise enhances workflow automation and system management, contributing to improved project efficiency. Let's collaborate to optimize your processes and productivity. By employing encryption and security controls for VMs, Disk Encryption, and Azure App Service, I ensure that your sensitive data remains protected. I expertly configure NSGs, firewalls, and WAFs to fortify your infrastructure against potential threats. Additionally, I specialize in establishing secure virtual private networks (VPNs) and load balancers (LBs) to maximize the resilience and protection of your applications. Throughout my projects, I maintain a strong emphasis on professional design and documentation practices, delivering comprehensive technical documentation to facilitate seamless collaboration and knowledge transfer. Let's collaborate to elevate your Azure architecture, streamline your DevOps practices, and fortify your cloud infrastructure for optimal performance and security. 💬 Contact me anytime to discuss your project requirements.