I’m a U.S. Marine Corps veteran and Computer Engineering student with 10+ years of experience in IT, networking, and cybersecurity. I bring the discipline, reliability, and problem-solving mindset of my military background to every client project. What I deliver: IT support & system administration (servers, Active Directory, virtualization, troubleshooting) Networking & system optimization (Cisco/Ubiquiti, VLANs, DHCP, router/switch setup) Cybersecurity services (risk assessments, vulnerability testing, system hardening, forensic analysis) Why clients work with me: Proven expertise: Led IT & security operations supporting global missions in the U.S. Marine Corps. Scale: Managed 1,600+ assets, trained 600+ users, installed 1,200+ systems. Professional discipline: Projects delivered on time with clear communication and focus. I offer a free 15-minute consultation to discuss your needs and provide the most effective solution

✨🥇🏆 - I help businesses design, deploy, secure, and optimize IT infrastructure. With experience across networking, virtualization, cloud platforms, Microsoft technologies, and cybersecurity, I can step into existing environments, solve complex technical challenges, or build new infrastructure from the ground up. 🏆🥇✨ - My background includes working with enterprise and SMB environments, delivering everything from infrastructure migrations and platform upgrades to security improvements and performance optimization. I focus on implementing solutions that are secure, scalable, and aligned with project goals. 👉 My expertise includes: ✅ - Networking: Cisco, Meraki, UniFi, VLANs, VPNs, routing, switching, wireless deployments, and network troubleshooting. ✅ - Cybersecurity: SonicWall, Palo Alto, Fortinet, Cisco, firewall configuration, VPNs, access control, network hardening, and security best practices. ✅ - Virtualization: VMware vSphere, Citrix Virtual Apps & Desktops, Citrix MCS, PVS, App Layering, XenServer, Microsoft Hyper-V, VDI deployments, and server migrations. ✅ - Microsoft Technologies: Windows Server, Active Directory, Group Policy, DFSR, WSUS, Microsoft Exchange, Microsoft 365, Microsoft Entra ID (Azure AD), and PowerShell automation. ✅ - Storage & Infrastructure: Dell EMC, Pure Storage, SAN deployment, disaster recovery planning, and infrastructure modernization. ✅ - Systems Engineering: Server deployment, cloud migrations, performance tuning, infrastructure upgrades, automation, and complex troubleshooting. 🥇 - I believe technology should solve problems, not create them. My approach is straightforward: understand the objectives, identify the right solution, and deliver high-quality work with clear communication throughout the project. Whether it's a migration, virtualization deployment, network redesign, cloud implementation, security hardening, or resolving a complex infrastructure issue, I focus on delivering results that meet the agreed scope and timeline. 🥇 - If you need an experienced infrastructure engineer for a well-defined project, I'd be happy to discuss your requirements.

Systems engineer with a focus on Datacenter, Networking, and Linux, with experience in Infrastructure management and deployment. NVIDIA AI infrastructure certified. Deployed Private Cloud infrastructure, Datacenter Network Design for Multi-tenancy, fault-tolerant design, NIC Bonding, low latency networks, Infiniband and 100+ Gbps networking management, benchmark and architecture. Stack: *Full virtual networking with vSwitches and vRouters *Infiniband management: Subnet Manager, HCA, LID/GID, IPoIB *VLAN, VxLAN, GRE and Overlay tunnels *IPv6 *MP-BGP, EVPN *Firewalling *VPN/OpenVPN/IPSec/WireGuard/Site to Site and Client-Server * VPP/DPDK for 100G VPN and routing *Advanced Linux management: IPTables, Kernel modules, Virtualization, Networking. *Traffic engineering *Advanced StrongSwan IPSec tunnels, XFRM *Cloudstack with Open vSwitch *OpenNebula with Open vSwitch *OpenDaylight SDN controller with OpenvSwitch *Advanced Proxy setup with Squid/Nginx *Virtuozzo and OpenVZ *KVM and Libvirtd / Proxmox *MicroVM Managment / Firecracker *RADIUS and FreeRADIUS *Pacemaker/Corosync/Keepalived HA cluster *MTLS design and implementation with NGINX *IoT gateway implementation with Raspberry Pi and 4G modems *DevOps experience with Chef and Ansible *Bash and Python scripting

A result-driven IT professional with extensive experiences in multi platforms (Network, Systems & Firewall as well as Email Deliverability Platforms) engineering, administration and support with total working experiences in Singapore (6 years 8 months) and in Bangladesh (5 years 10 months). In-depth expertise in the implementation, analysis, optimization, troubleshooting and documentation of global network, firewall and systems as well as monitoring network platform that capitalizes on expertise in CISCO Routers/Switches, ASA, Checkpoint, Juniper SRX (Firewalls and Routers), Fortigate, Sonicwall, Monowall, IPTABLES firewalls, Linux/Unix (RedHat, Debian, SUSE, BSD, CENTOS, FC, Ubuntu), Windows 2000/2003/2012R2 platform, F5 LTM/GTM devices, Nokia checkpoint (Provider1 and Smart Manager). Dedicated to pursue further challenges in the field of Network & Security as well as System Administration/Engineering wherein my skills and knowledge will be highly developed and utilized. Maintain focus on achieving end-results while demonstrating strategic problem solving skills and ability to follow through multi-tasking job. Scope of Intervention • Installation (Routers, Switches, Servers, Patching, Applications, Firewalls etc) • Troubleshooting (Network, Firewalls, Systems, Apps etc) • Test & Commissioning (Network & Security projects for Routers, switches and firewalls & COLO servers) • Troubleshooting of Email Marketing platforms (Sendgrid, Mailchimp, JangoMail, AWS SES etc. as well as company hosted SMTP servers with Postfix, PowerMta, Exim and any other MTA issues for official Email Platforms or Bulk sending platforms. • Monitoring (Nagios, Opsview, Solarwinds, Cacti, HPNA, ENM, APPSVIEW, • BMC Proactive, Intermapper, HP Netcool, Splunk, eHealth, Sitescope etc.) • Ticketing – (Jira, Maximo, Salesforce etc.) • Documentation and Diagrams – (Sharepoint, Visionael and MS Visio etc) • Global Meetings (For projects and troubleshooting) Industries & Specialties • Telecommunication (VoIP and SMS) • Solutions Provider (Network & Security) • Managed Services Provider (Network, Security, Servers & applications) • Bank Network Infra (Network, Security & Systems)

As a multi-lingual Network Engineer with 20+ years in Fortune 100 companies, I specialize in crafting resilient, high-performance network infrastructures for complex Cisco, Meraki, Fortinet, and Ubiquiti systems. Here's what I bring to your project: - Strategic Planning & Implementation: Proven track record in delivering strategies that fortify networks and streamline operations for manufacturing plants, data centers, and campus environments. - Technical Proficiencies: Deep knowledge of Router/Switch, Security, WiFi, and Data Center networks across Cisco, Fortigate, Meraki, and Ubiquiti technologies. - Project Lifecycle: Expertise in guiding projects from the initial proof of concept and feasibility analysis through to design, delivery, and enhancement. - Cost-effective Solutions: Adept at designing and implementing solutions that balance performance with budgetary concerns, driving down costs without compromising security or functionality. - Team Leadership: History of leading diverse engineering teams to surpass objectives in a culturally and technically varied workplace.

I'm Ibrahim , IT Consultant & Engineer With a strong background in Networking, Linux, DevOps, and Security, I bring years of experience in VoIP, automation, and VPN solutions. I specialize in designing, securing, and optimizing IT infrastructures for businesses. Certifications: CCNA – Cisco Certified Network Associate RHCSA – Red Hat Certified System Administrator Key Skills & Expertise: VoIP & Telephony: (Asterisk, FreePBX, Issabel, 3CX, SIP Trunking, Dial-Plan, Patton FXO/FXS) Networking & Security: (Cisco, MikroTik, Juniper, VLAN, DNS, DHCP, TCP/IP, Firewalls, IDS/IPS) Linux Administration: (Ubuntu, CentOS, RedHat, Bash Scripting, Automation) VPN Solutions: (OpenVPN, SoftEtherVPN, IPsec, WireGuard, SSL/TLS Security) Cloud & Virtualization: (AWS, Azure, VMware ESXi, Proxmox, Docker, Kubernetes) Database Management: (MySQL, PostgreSQL, MSSQL) Monitoring & Logs Analysis: (Zabbix,, Wireshark, tcpdump,) Windows & Active Directory: (Domain Management, LDAP, SAML/SSO, PowerShell) Why Choose Me? Quick Response & 24/7 Availability Client-Centric Approach with 100% Project Delivery Custom Solutions Tailored to Your Business Needs Extensive Hands-On Experience Across Multiple Domains Let’s collaborate to build secure, scalable, and efficient solutions! This version is polished, professional, and optimized for clients looking for VoIP. Let me know if you want any final adjustments!

🔹 Network & System Engineer | Cloud Specialist | Cybersecurity Enthusiast I am a results-driven Network and System Engineer with over 3 years of hands-on experience in designing, implementing, and managing IT infrastructures for enterprises and academic institutions. I specialize in network administration, system administration, cloud computing, and cybersecurity, ensuring optimized performance, security, and scalability. 💡 What I Offer: ✔️ Network Administration – LAN/WAN configuration, VLANs, routing protocols (EIGRP, OSPF), firewalls (FortiGate, PfSense, Cisco, Palo Alto), IDS/IPS, and SIEM. ✔️ System Administration – Windows Server management, Active Directory, DNS, DHCP, Linux administration, NAS (TrueNAS), Nginx & Apache web hosting. ✔️ Cloud Solutions – Microsoft Azure (IaaS, Entra ID, Office 365), AWS EC2, Exchange administration, cloud migration & management. ✔️ Virtualization & Backups – VMware ESXi, Hyper-V, Veeam Backup & Replication for disaster recovery & high availability. ✔️ Cybersecurity – Securing IT infrastructures with encryption, VPN tunneling, firewall policies, and automated incident response. 🏆 Key Achievements: Maintained 99.9% uptime for university servers at UCP by implementing proactive monitoring and disaster recovery plans. Successfully migrated a digital library to a secure, scalable Linux-based web server. Designed & implemented a centralized job portal system for HR departments. Managed Microsoft Exchange & Office 365 across multiple organizations. Conducted private cloud security research, integrating payload encryption with VPN tunneling. 🎓 Education & Certifications: BSc Computer Science (Networks & Cloud Computing) – Lahore Garrison University (GPA: 3.47/4.0) Certifications: HCIA Cloud Computing – Huawei HCIA Security – Huawei Network & Cloud Computing – NAVTTC Cybersecurity Fundamentals, SOC, and Automated Incident Response – Coursera ✅ Why Work With Me? I bring technical expertise, problem-solving skills, and a client-focused approach to every project. My goal is to deliver secure, efficient, and reliable IT solutions that align with your business needs. If you’re looking for a dedicated Network/System Engineer who can handle infrastructure setup, cloud deployment, cybersecurity, and IT support, let’s connect and discuss how I can add value to your project. 📩 Let’s build a secure and scalable IT environment together!

I am a versatile IT professional with 6+ years of hands-on experience in IT support, network and server administration, cloud solutions, cybersecurity, and building infrastructure. I help businesses ensure smooth, secure, and efficient IT operations. I provide professional services in: IT Support & Consultancy: Setup, troubleshooting, and maintenance of laptops, printers, scanners, fax machines, switches, firewalls, and other IT equipment. Strategic IT guidance to optimize operations. Network Administration: Design, deployment, and troubleshooting of wired and wireless networks. Experience with network switches, routers, VOIP systems like 3CX and FreePBX, and connectivity solutions. Server Administration: Managing Windows and Linux servers, virtualization, backups, and server optimization. Cloud Solutions: Microsoft 365, AWS, managed backups, and virtualization solutions to enhance business productivity and scalability. Cybersecurity: Network security, endpoint security, vulnerability management, and ensuring your infrastructure is safe from cyber threats. Building Infrastructure: CCTV and surveillance systems setup for homes and businesses. I am committed to delivering reliable, efficient, and secure IT solutions tailored to your business needs. Let’s work together to simplify your IT and enhance your operations.

Expert-Vetted on Upwork (Top 1% of security professionals). If you're building on the cloud and want to find the security gaps attackers would exploit — before they do — I can help. I’m a cybersecurity consultant and founder of Exfiltra, helping startups and enterprises secure their applications, cloud infrastructure, and DevOps pipelines. I have worked with organizations generating $6B+ in annual revenue and helped companies strengthen security across cloud environments, applications, and compliance programs. I personally lead security engagements and, when needed, bring in specialists from my team at Exfiltra to support larger or complex projects. Most clients hire me when they want to: ✔ Secure Azure / AWS / GCP environments ✔ Perform professional penetration testing ✔ Implement DevSecOps and secure CI/CD pipelines ✔ Prepare for SOC 2, ISO 27001, HIPAA, FedRAMP, or CMMC ✔ Improve security posture using industry frameworks CORE EXPERTISE AZURE & CLOUD SECURITY • Azure security architecture reviews • Microsoft Defender for Cloud & Sentinel • Identity security (Entra ID / Conditional Access) • Cloud configuration reviews and CIS Benchmark hardening APPLICATION SECURITY & PENETRATION TESTING • Web application penetration testing • API security testing • Mobile application security testing • Network and cloud penetration testing • Assessments aligned with OWASP Top 10 and OWASP ASVS DEVSECOPS & SECURITY AUTOMATION • Secure CI/CD pipelines (Azure DevOps / GitHub Actions) • Infrastructure as Code security (Terraform / Bicep) • SAST and DAST integration in pipelines SECURITY TOOLS • Snyk • Semgrep • OWASP ZAP • Burp Suite • Wazuh • CrowdStrike • Microsoft Sentinel AI & LLM SECURITY • AI application threat modeling • Prompt injection and model abuse testing • Secure architecture for AI-powered applications WHY CLIENTS WORK WITH ME • Upwork Expert-Vetted (Top 1% of freelancers) • Founder of Exfiltra – a cybersecurity services company • Supported by a team of security specialists for larger engagements • Contributor to OWASP ZAP • Experience securing environments for organizations generating $6B+ in revenue • Background in both software engineering and cybersecurity • Security research involving organizations like the U.S. Department of Defense NOT A GOOD FIT IF • You want to hack or recover social media accounts • You want enterprise-grade security but are not willing to invest in it If your goal is to build secure systems instead of reacting to breaches later, feel free to invite me to your job or send a message describing your project.

An experienced software developer/architect/product development manager with over 15 years of solid experience in developing advanced and secure networking software for routers, switches, firewalls, servers, IoT devices/gateways and network appliances. Possesses deep working knowledge in IPv6, routing protocols, operating system, firewall, client-server application, management protocols and applications. Very proficient in C, C++, Perl, Unix scripting, modular and OOP programming, client-server and has advanced working skills in PHP, Ruby/Rails, Java, SQL, non-SQL and Web technologies. Mainly used FreeBSD and Linux in all projects. Heavily involved in all phases of development, from conceptualization, requirement specification making, designing, implementation, testing and maintenance. I am seeking opportunities to design and develop network appliances, IoT devices and embedded systems from the ground up, migrate networking applications to incorporate secure technologies and run on IPv4 and IPv6 and build intuitive and secure websites or web-based management interfaces. I am also seeking consulting services in product development, management, QA and coaching as well as design, deployment, pen-testing and monitoring of networking and security services and infrastructures. Summary of competencies and skills - System/network/security administration using open source and commercial solutions such as pfSense, OPNsense, BIND/DHCP/DNS, Freeswitch/Asterisk/SIP/VoIP, Sophos, Sonicwall, OpenWrt, ELK Stack, Grafana/Prometheus, Zabbix, Nagios, SNMP, OpenVPN, IPsec, Wireguard, HAProxy, MongoDB, MySQL/PostgreSQL, Redis, Nginx, Apache, Squid, Snort, OpenStack, Radius, OpenLDAP, Ceph, RabbitMQ, Kali Linux, Connectwise Manage, Connectwise RMM, Connectwise Perch, Bitdefender, WebRoot, Auvik, MQTT - IoT, LoraWAN, Chirpstack, Sensors, Rasp PI integration/interfacing, BACnet, BMS - Unix and Linux system, security, and network administration and dual-stack network/sockets programming - System/Application programming with C/C++, PHP, Ruby, Perl and Shell scripting. - Cloud computing and networking on AWS, IONOS and Digital Ocean environments - Virtualization with Proxmox, ESXi, vSphere, and KVM - Containerization using Dockers - Project management in various methodologies such as Extreme programming, Agile, Iterative, Waterfall, Prototyping, and Scrum - Software and hardware product development covering all phases of product life cycle - Secure networking software development for routers, switches, and network appliances in IPv4 and IPv6 network stacks - Software testing automation and Continuous Integration (CI) using Gitlab/Github, Jenkins, Robot Framework, Selenium - Risk assessment, Penetration testing, Disaster Recovery, Compliance and Interoperability testing, Performance and Capacity testing and High Availability deployment, management - Web Services, Application and network design, deployment, monitoring, and management - Managed Services Provider support and deployment, Connectwise suite(Manage, RMM, Perch), Bitdefender, Webroot, Auvik - Asset management, Document and Source Code control - Human resource training, career and life coaching