Md Ayub A.

Over 15 years of software engineering experience of delivering complex, high risk, high value projects through development, program management and product management. Combine an entrepreneurial instinct, in-depth technical skill, and strong reputation for solving critical problems. SKILL HIGHLIGHTS * Core Development: C, Unix Sockets, PHP, Bash, AWK, Vi. * Web and Application Services: NGINX, Apache, MySQL, Redis, Tomcat, Kannel (SMS Gateway), Postfix, Dovecot, PHP-FPM, uWSGI. * Speciality in Network and Application Protocols: DHCP, DNS (BIND), HTTP, FTP, SFTP, SSL, TLS, SSH, IP, UDP, TCP, SCTP, SMTP, POP3, IMAP4, NFS, NIS. * Network Security, Firewall and Routing: Nmap, tcpdump, Wireshark, iptables, Fail2ban, iproute2. * Telecommunication Protocols: SS7, SMPP, USSD, SIGTRAN, SCTP, M3UA, SCCP, TCAP, MAP. * Design and development of large scale applications on SQL and NoSQL Database. * On-premises Cloud Environments: Kubernetes (The Hard Way, TalosOS). * Package management (portage, yum, apt, apk) along with compiling from source (Autotools, Makefile). * Speciality in building Linux from scratch & Tuning kernel. * Restore/Backup and Storage Administration (RAID, LVM, NFS, fdisk, fsck, FS tuning, rsync) * Mobile Financial Service (MFS) using “Cyclos 3” and integration with MNO (USSD, SMS), Banks (API). * Linux distributions: Gentoo, Red Hat/CentOS, Ubuntu, Alpine.