IT services

Certifications:

• CCNA

• Microsoft Certified C# Developer (70-483)

• Microsoft Certified Python Developer (98-381)

• ISTQB-FL Certified

• AWS Certified Solutions Architect Associate

• Certified Scrum Master (Scrum Alliance)

Networking & Protocols:

• Strong in OSI Model, IPv4/IPv6, Subnetting, VLANs, Routing (Static, RIP, EIGRP, BGP, OSPF)

• Switching, Inter-VLAN Routing, CoS/QoS, VxLAN

• Protocols: HTTP/HTTPS (PKI), SIP/SDP/RTP/RTCP/SRTP, T.38, TR-069, LDAP, STP, GSM, SMTP, SNMPv1/2/3, IMAP, RTSP, TFTP/FTP/SCP, MQTT, DNS (A/AAAA/SRV/NAPTR), NTP, IPSec, PPP, Telnet/SSH

VoIP & Telecom:

• Expertise in SIP protocol, SDP, RTP, RTCP for VoIP

• VoIP feature & interop testing on Yealink, Cisco, Fanvil, NEC, Avaya IP phones

• Deployment/configuration: Asterisk, 3CX, Brekeke servers

• Auto-provisioning IP phones (HTTP/TFTP/FTP)

• Codec analysis: G.711A/U, G.729, iLBC, G.723, G.726, Opus, H.264, MP4, VP8

• Fax: PCM (G.711), T.38-RTP/UDPTL

• VoIP gateways, FXS/FXO, E&M systems integration

• Firewall setup (port forwarding/triggering, DMZ)

• Linux OS hardening for deployments

Security & VAPT:

• Vulnerability assessment & penetration testing of web apps, UC servers, APIs using OWASP

• Tools: Burp Suite, Nmap, OpenVAS, Nessus, Kali Linux, Scapy

• Python automation for DDoS simulation, scanning, brute-forcing

• CVE analysis & documentation

Intelligence & High-Speed Networking:

• Worked with RFC 3924-based lawful interception products

• High-speed traffic analysis up to 400Gbps (Mellanox/Napatech NICs, Keysight Ixia)

• Protocols: RADIUS, DIAMETER, SIGTRAN, SSL (correlation, fingerprinting)

• SNMP health monitoring automation

Tools & Platforms:

• Wireshark (expert), Tshark, SIPp, SIPsak, SipInspector, PuTTY, WinSCP, Syslog capture, Bind DNS, RabbitMQ, Kafka/Zookeeper, TCPDump

• JIRA, Confluence, Crucible, IBM ALM, Bugzilla

• IDEs: PyCharm, NetBeans, Visual Studio

Cloud Computing:

• AWS EC2 setup, VPC (public/private), Route 53, Active Directory integration

• Instance storage deployment, configuration, troubleshooting

Programming:

• Expert in Python & Shell scripting

• Proficient in Core Java