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I help businesses build reliable, scalable communication systems and web applications by combining deep expertise in VoIP (3CX & Yeastar) with full-stack development and API integrations. With 6+ years of experience in 3CX, hands-on expertise in Yeastar Cloud PBX, and 3+ years in full-stack development, I specialize in delivering end-to-end solutions — from telephony infrastructure to CRM integrations and custom dashboards. 🔥 What I Can Do For You ☎️ VoIP & PBX Solutions (3CX + Yeastar) 3CX setup, configuration & troubleshooting (V18/V20) Yeastar Cloud PBX deployment & management SIP Trunk integration (Twilio, Telnyx, Flowroute, etc.) IVR, Call Queues, Ring Groups, Call Routing Predictive / Progressive Dialer setup Call recording, reporting & analytics Multi-tenant PBX architecture DID management & call flow optimization 💻 Full Stack Development Backend: PHP, Node.js, Golang Frontend: JavaScript, HTML, CSS, Bootstrap, Tailwind Database: MySQL, PostgreSQL Build scalable CRM systems & dashboards WebRTC / SIP dialer development Real-time systems & automation workflows 🔗 API Development & Integrations (Swagger/OpenAPI) REST API design & development Swagger/OpenAPI documentation CRM integrations (Zoho, Salesforce, Monday, etc.) Webhooks, automation, and data sync systems 🌐 WordPress Development Custom theme & plugin development Website optimization & speed improvements API integrations with WordPress Business websites & landing pages 💡 Why Clients Choose Me ✔ 6+ years in VoIP & telephony systems ✔ Strong backend + infrastructure understanding ✔ Fast troubleshooting & problem-solving ✔ Clean, scalable, production-ready solutions ✔ Excellent communication & long-term support 📌 Recent Work Highlights Built multi-company 3CX dialer system with CRM integration Deployed Yeastar Cloud PBX for international clients Developed VoIP analytics dashboards & call tracking systems Integrated Twilio / Telnyx with custom applications Created API-driven automation workflows using webhooks 🎯 Let’s Work Together If you need help with: Setting up or fixing your 3CX / Yeastar PBX Building a custom dialer or VoIP system Integrating APIs or CRM systems Developing a scalable web application 👉 Send me a message — I’ll provide a clear solution quickly.

I aspire to contribute to an organization that recognizes my strengths, enhances my skills, and fosters professional growth in the field of networking. With around 10 years of experience in the IT industry, I bring expertise in networking, wireless technologies, security, and SD-WAN. As a versatile and adaptable professional with over a decade of experience in the private sector, I have extensive hands-on knowledge of routers, switches, firewalls, and a broad range of networking solutions. My technical proficiency covers Cisco Nexus Switches, Cisco Meraki devices, Cisco Wireless, Cisco Prime, Cisco WAAS, Aruba Wireless, Aruba ClearPass (CPPM), Aruba Central, Aruba Gateway, Palo Alto Firewalls, Panorama, Prisma SD-WAN, Fortinet products (FortiGate, FortiSwitch, FortiAP, FortiExtender, FortiManager, FortiAnalyzer, FortiCloud), F5 BIG-IP, Silver Peak SD-WAN, Ubiquiti UniFi solutions, Cradlepoint, VMware Cloud, OpsRamp, MS Visio, ServiceNow, and various network-related projects. I am a dedicated, motivated, and adaptable professional with a positive attitude, strong problem-solving skills, and a commitment to maintaining high professional standards. My ability to quickly grasp new technologies, communicate effectively, and take on challenges allows me to work independently or as part of a team. Technical Expertise Routing OSPF, EIGRP, eBGP, iBGP, VRF, Static & Dynamic Routing, Cisco Routers, Cisco Meraki Appliance, Cisco WAAS, Ubiquiti UniFi Gateway Switching VLANs, Port Security, Trunking (802.1q), EtherChannel, VTP, STP, MST, RSTP, PVST Inter-VLAN Routing, CEF, HSRP, VRRP, GLBP, PoE, SPAN, MAC Table, VSS, vPC, Flex-Link Cisco Catalyst & Nexus Switches, Cisco Meraki Switches, Ubiquiti UniFi Switches Security Policy-based & Route-based VPN, AAA, ACLs, Cisco ASA, FortiGate, Palo Alto Firewalls, Sophos Firewalls Panorama, Aruba CPPM, Aruba Gateway, Cisco Meraki Firewall (L2/L3 Security), NAT, SD-WAN IP Source Tracking, OpenVPN, pfSense Firewall, UniFi Gateway Wireless Cisco Wireless LAN Controller (WLC), Cisco Prime, Cisco DNA, Cisco Meraki, Aruba Central Aruba WLC, Aruba CPPM, WLAN, Cisco AP, Cisco Meraki AP, Aruba AP, Mist AP, UniFi AP Network Monitoring & Tools ServiceNow, OpsRamp, Remedy, JIRA, ScienceLogic, SolarWinds Certifications & Professional Qualifications Cisco Meraki Solutions Specialist (ECMS) CCIE Enterprise Infrastructure Managing Campus Networks with Aruba Central Cisco Meraki Network Associate (CMNA) Aruba Mobility Fundamentals Palo Alto Networks Certified Network Security Engineer (PCNSE) NSE 1/2/3/4 Network Security Associate Silver Peak Technical Sales Professional, Silver Peak SD-WAN Cisco Certified Network Associate (CCNA) Firewall Vendors: Cisco (Cisco ASA, Firepower, Meraki MX) Palo Alto Networks (PA-Series, Prisma Access, Panorama) Fortinet (FortiGate, FortiManager, FortiAnalyzer) Check Point (Quantum Security Gateway, Harmony) Sophos (XG Firewall, SG UTM) WatchGuard (Firebox Series) SonicWall (NSA, TZ Series) Juniper Networks (SRX Series) Barracuda (CloudGen Firewall) Zscaler (Cloud Security) Forcepoint (Next-Gen Firewall) Hillstone Networks (A-Series, X-Series) Huawei (USG Firewall) Sangfor (NGAF – Next-Gen Application Firewall) F5 Networks (BIG-IP Advanced Firewall) McAfee (Trellix) (Network Security Platform) Cyberoam (UTM Firewall) Netgate (pfSense) Ubiquiti (UniFi Security Gateway) DrayTek (Vigor Security Firewalls) Lancom (R&S Unified Firewalls) GajShield (Next-Gen Firewall) Versa Networks (SASE & SD-WAN) Cato Networks (SASE) Hillstone Networks (Next-Gen Firewall) OPNsense (Open-source Firewall) Clavister (Secure SD-WAN & Firewalls) ZYXEL (ATP, VPN, USG FLEX Firewalls) Perimeter 81 (Cloud Firewall & SASE) Networking Vendors Cisco (Catalyst, Nexus, ISR, ASR, Meraki) Aruba (HPE) (Aruba Central, ClearPass, Instant APs, Switches) Juniper Networks (EX, QFX, MX Series) Extreme Networks (Summit, VSP, Fabric) Hewlett Packard Enterprise (HPE) (FlexNetwork, Aruba Switches) Brocade (Now Broadcom) (ICX, MLX Series) Ubiquiti (UniFi Switches, Dream Machine, EdgeMax) MikroTik (RouterBOARD, Cloud Core Router, Switches) Dell EMC Networking (PowerSwitch, VxRail) TP-Link (Omada, JetStream Switches) Huawei (CloudEngine Switches, NetEngine) Netgear (ProSAFE Switches, Orbi, Insight Managed) Nokia Networks (Service Routers, AirScale) Zyxel Networks (Nebula, GS Switches) Ruckus Networks (CommScope) (ICX Switches, SmartZone) Ciena (Blue Planet, Adaptive Networks) Broadcom (StrataXGS Switches, Tomahawk) Arista Networks (CloudVision, EOS Switches) Radware (Alteon Application Switches) Cradlepoint (NetCloud SD-WAN, Wireless Routers) Silver Peak (HPE) (SD-WAN EdgeConnec Silver Peak (HPE) (SD-WAN EdgeConnect) Cato Networks (SASE & SD-WAN) Versa Networks (SD-WAN, Secure Networking) With my extensive experience and deep technical expertise, I am confident in my ability to deliver effective networking, security, and cloud solutions while continuously adapting to new technologies and industry trends.

IT Expert with 8+ years of experience in Managing Windows and Linux-based server infrastructures, Network security and administration, and software solutions. Here are some major services on which I am working: ☑️- Server Administration : ✔️ Windows server : Intune , ADDC, DNS, DHCP, WSUS, Group Policy Management, RDP Server, WDS Server, IIS Server, MS Exchange Server, MS SharePoint, MS Office 365, MS One Drive, MS Teams, File Server (NAS & SAN) , FTP, NTP and many more ✔️ Linux Server : SAMBA ADDC LDAP, SAMBA File Server, DNS, DHCP, Mail Servers (Zimbra, PMTA, Send grid, Squirrel mail, Roundcube). Web Servers (Tomcat, apache, nginx, light speed), MySQL, MariaDB, Postgres, FTP, NTP, Ticketing tools (Manage engine, OS ticket, OTRS Ticket, Citrix XenApp, JIRA, Service now), Monitoring Tools ( Check_mk, Syslog, Nagios, Cacti, ELK Stack, Zabbix, PRTG), IDS Server ( OSSEC, WAZUH, SNORT, Suricata, BRO, Tripwire, Security Onion), DLP/Encryption/ Threat Prevention Server ( Symantec, Sophos, McAfee), Threat Intelligence server (MISP, Mitre, OpenCTI), The Hive with Cortex, ArcSight Server, Dialer Server ( VCdialer, go autodialer, ViciBox, Altitude Dialer), Virtaul Hypervisor ( VMware ESXi, Proxomox, Virtual Box, VMware Workstation), GenieACS TR-069 remote management server, Vulnerability Assessment Scanner Tools (OpenVAS, Nessus Professional, Wireshark, Comodo cWatch, Tripwire IP360) , SonarQube Code analysis Tool, NXfilter URL Filtering tool and Many More.. ☑️- Network Administration: Key Network Skills & Security Products Experience: o Firewall – Checkpoint, Cisco ASA, Palo Alto, Fortigate, Sophos, o Router & Switches : Cisco, Mikrotik, Ubiquiti, Netgear, Aruba o Intrusion Detection & prevention – Cisco, Checkpoint, Sophos o Switching: Vlan, Inter Vlan, Stp, Vtp, EtherChannel, Switch Port o Configuration and troubleshooting of routing protocols OSPF, RIP, EIGRP, BGP o Setup of security implementations (Filtering Tool ACL, route map, port security.) o Well versed in the operations, configuring, and troubleshooting of various issues in Checkpoint and Cisco, Mikrotik, Ubiquiti, Netgear & and Aruba Devices. o Checkpoint IPSec VPN Blade, Application & URL filtering Blade, IPS Blades, o Configuration & troubleshooting of IPSEC and S2S VPN ☑️- Information Security I help organizations stay compliant with all the important standards like PCI DSS, HIPPA, ISO 27001, GDPR, FISMA, and GLBA. In addition to these compliances, I also help companies with Information Security Assessments and Penetration and vulnerability Testing for identifying loopholes in their security infrastructure and BCP/DR consulting for building programs to stay ahead of future security incidents. ☑️- Cloud Solutions: I Help organizations to deploy their services on AWS, GCP, and Microsoft Azure cloud & Freshservices. Projects not for me: ✖Asking to hack/crack/access someone else accounts, systems, social media, etc

✔️ Plex, IPTV, Emby, Jellyfin, Usenet Expert ✔️ Synology, TrueNAS, UnRaid, NAS, Proxmox, Openshift, Linux, Mac ✔️ Unity with PHP Multiplayer Game Development ✔️ Apache, NGINX, Varnish, Redis, Memcached, Postfix, Exim, MySQL, Postgres, MariaDB, DynamoDB, Redshift, Prometheus, Grafana ✔️ GCP, Microsoft Azure, AWS, Digital Ocean, Hetzner, Contabo, Cloudflare ✔️ SSO Expert- Authentik, LDAP, SAML, Keycloak ✔️ Proficient in Docker, Kubernetes, Helm, Terraform, Ansible ✔️ Expertise in Private DNS servers, DNS over TLS, DNS over HTTPS, Bind, DNSMasq, Unbound, etc ✔️ All Scripts/Forum Software installation and configuration ✔️ Troubleshooting Websites/servers (Linux) ✔️ Git implementation/integration with existing software flow, including CI-CD Pipeline ✔️ Domain Configuration, Management ✔️ Proficient in JAVA, PHP, PYTHON, SWIFT, KOTLIN. ✔️ Prepare for and carry out server migration. Site migration, Geo Restriction, Advanced Security ✔️ HestiaCP, Cloudflare, Tunneling, WHM, cPanel

I've 8+ years of experience as an Embedded Firmware Engineer specializing in IoT, Firmware design, development, testing, documentation, microcontroller & microprocessor programming, Arduino programming, stack development, home automation, and many more. 🚀 My key strengths and expertise include: ---------------------------------------------------- ✅Programming languages: - Embedded C, C++ - Arduino (C++ Variant) - Python ✅ Platform: - ESP32 | ESP32-S3 | ESP32-C6 | ESP32-H2 | ESP32-Wroom | ESP32-Wroover | ESP32-Cam | - Nordic Semiconductor (nRF52, nRF53, nRF51 series, nRF9160) - Arduino - Raspberry Pi - NXP I.MX6 | I.MX8 series ✅ Framework: - Visual Studio - ESP-IDF, Arduino IDE, - Segger Embedded Studio - IAR - Keil - Beyond studio ✅ Wired Communication Protocols: - I2C | SPI | UART ✅ Wireless/RF Protocols: - BLE | Bluetooth | WiFi | Zigbee | Z-Wave | Thread | Matter. ✅ Communications (PLC): - MQTT | CoAP | HTTP ✅ Debugging Tools: - JTAG - Oscilloscope | Logic Analyzer - Wireshark | Ubiqua protocol analyzer - nRF Connect Desk (Power profiler) ✅ Sensor Integration: Proven track record in various sensor integrations, including temperature, humidity, PIR, Motion, Accelerometer, Pressure, Fire, Door lock, and many more into embedded systems. ✅ Cloud integration: Experience integrating the cloud platform with a microcontroller and mobile/web app. - AWS IoT Core - Thingsboard - Blynk ✅ Proficient in Yocto, Linux kernel, FreeRTOS, Baremetal I'm looking for the opportunity to be outsourced for your project where I can apply my skills and knowledge to you. If given a chance to be part of your team, I am committed to delivering exceptional results and achieving the desired outcomes. With my background and skills, I am confident I can contribute effectively. 🚀 What can I do for you? ------------------------------- [ Firmware Design & Development ] : - Designing and developing wireless solutions for embedded applications. - Integration of wireless protocols and communication modules into existing systems. - Troubleshooting and debugging critical issues, optimizations, collaborative problem-solving, and product enhancement. - I can architect and develop your firmware from the ground up. I prioritize delivering high-quality work, ensuring customer satisfaction, and meeting deadlines without compromising on the quality of work. My strong analytical and problem-solving skills enable me to communicate effectively with clients, provide regular updates, and foster a collaborative and transparent work environment.

6+ years as an Offensive Security Researcher, OSCP and CEH v12 certified, I help startups, SaaS companies, and enterprises think like an attacker before real attackers do through hands-on Penetration Testing, Red Teaming, and Vulnerability Assessment (VAPT) across web, mobile, API, network, and cloud environments. My approach is simple: real offensive security isn't a scanner dump it's manual exploitation, chained attack paths, and a prioritized, developer-ready remediation plan mapped to your actual business risk. With a strong software engineering background, I read source code, trace data flows, and reason about architecture catching business-logic flaws, privilege-escalation chains, and design weaknesses that automated tools always miss. 🎯 PENETRATION TESTING & VAPT Full-scope Vulnerability Assessment and Penetration Testing (VAPT) across the OWASP Top 10, OWASP API Security Top 10, and PTES/OSSTMM methodologies: broken access control, IDOR, SSRF, SQLi/NoSQLi/command/template injection, XSS, CSRF, insecure deserialization, auth/session flaws, privilege escalation, and business-logic abuse. Web App Pentesting: React, Angular, Vue, Next.js, Node.js, Django/Flask/FastAPI, Spring, Laravel, Rails, .NET, Go Mobile Pentesting: Android & iOS per OWASP MASVS/MASTG, static + dynamic analysis, reverse engineering, insecure storage, API/backend abuse API Pentesting: REST, GraphQL, SOAP auth bypass, rate-limit abuse, mass assignment, BOLA/BFLA Network Pentesting: internal/external, Active Directory attacks (Kerberoasting, pass-the-hash, lateral movement, privilege escalation), segmentation testing Every finding is manually verified (zero false positives), CVSS-scored, and delivered with an executive summary + technical deep dive + exact remediation steps, plus a free retest. Tools: Burp Suite Pro, OWASP ZAP, Nmap, Metasploit, Cobalt Strike, Nuclei, sqlmap, Nessus, ffuf, BloodHound, Mimikatz, Hashcat, John the Ripper, Wireshark 🕵️ RED TEAMING & ADVERSARY SIMULATION End-to-end Red Team engagements simulating real-world TTPs mapped to MITRE ATT&CK: initial access, phishing simulation, C2 infrastructure, privilege escalation, lateral movement, persistence, and data exfiltration testing people, process, and technology together, not just systems. Purple Team collaboration to strengthen detection and response (SOC/EDR/SIEM evasion & tuning). ☁️ CLOUD SECURITY (AWS, Azure & GCP) IAM and least-privilege reviews, network segmentation, exposed storage (S3/Blob/GCS), privilege-escalation paths, and CIS Benchmark hardening. Cloud penetration testing and CSPM assessments using Prowler, ScoutSuite, and Pacu. ⚙️ DEVSECOPS & INFRASTRUCTURE SECURITY Security embedded into CI/CD (GitHub Actions, GitLab CI, Jenkins), container/Kubernetes security (Trivy, Grype, RBAC, Pod Security Standards), and IaC security review for Terraform/CloudFormation/Ansible (Checkov, tfsec). SAST, DAST, SCA, and secrets scanning integration (Semgrep, Snyk, SonarQube, Gitleaks, TruffleHog). 🤖 AI / LLM SECURITY Offensive testing of AI/ML and LLM-powered features against the OWASP Top 10 for LLM Applications and MITRE ATLAS: prompt injection, jailbreaks, model DoS, sensitive-data leakage, insecure output handling, and excessive agency in agentic systems. 🧠 SECURITY ENGINEERING & RESEARCH Secure code review, threat modeling (STRIDE, attack trees), reverse engineering (Java/bytecode, anti-tamper analysis), malware analysis fundamentals, and security architecture design. 🤝 HOW I WORK: 1️⃣ Free scoping call to define objectives, rules of engagement, and scope 2️⃣ Testing/assessment with clear, regular communication 3️⃣ A prioritized report Executive Summary + technical detail + exact fixes 4️⃣ Free retest and debrief once your team remediates Every engagement is handled under strict confidentiality, signed Rules of Engagement, and full written authorization. I don't oversell if you don't need a service, I'll tell you honestly. Keywords: penetration testing, ethical hacking, VAPT, red teaming, purple team, OSCP, CEH, offensive security, web app pentest, mobile pentest, API pentest, network pentest, Active Directory pentest, cloud security, AWS pentest, Azure pentest, GCP pentest, DevSecOps, cybersecurity consultant, vulnerability assessment, security audit, ISO 27001, SOC 2, GDPR compliance, MITRE ATT&CK, OWASP Top 10, secure code review, threat modeling, AI security, LLM security. 📩 Message me with your project details, and I'll respond with a clear, no-pressure scoping plan.