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$40 USD / time
Flag for BANGLADESH
$40 USD / time
Det er i øjeblikket 7:41 PM her
Tilmeldt oktober 6, 2012
17 Anbefalinger

Mohammad Abu S.

@abusayed2004

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4,9 (98 anmeldelser)
6,8
6,8
87%
87%
$40 USD / time
Flag for BANGLADESH
$40 USD / time
96 %
Jobs færdiggjort
98 %
Indenfor budgettet
93 %
Til tiden
17 %
Genansættelsesrate

Asterisk PBX, SIP, Linux, Cloud, DevOps, Security

I am currently seeking long-term remote and onsite job opportunities. With 13 years of experience, I have worked extensively with VoIP, Asterisk, cloud technologies such as AWS and OpenStack, Server security, Vtiger CRM, Open VPN, CentOS, Ubuntu, Redhat, VoIPSwitch, Oracle DB, RHEVM, Mysql, and Linux customization. I am also proficient in Python and PHP scriptwriting for IVR and AGI implementation on Asterisk. I have a team for support and further development. My expertise includes: - Linux - Hosting Systems Administration & Monitoring - Design and implementation of High-Performance SIP SBC - DevOps CI/CD - Service Optimization - Security Hardening - VoIP, Asterisk, SMS, Dongle, and FreePBX installation, configuration, and maintenance - WebRTC SIP Phone - Infrastructure Planning - Disaster Recovery - Shell Scripting - Capacity planning, application delivery planning - Network Troubleshoot, Spanning Tree, PVST, RSTP, HSRP, RIP, BGP, EGRP IGRP, MPLS - SAN Troubleshoot - GlusterFS, CEPH - NFS, SMB, ISCSI, SMTP - Linux performance tuning - MySQL, Oracle DB performance tuning - Laravel web application development - Web Security, Web benchmark, best practice - IPTV, Live streaming, VOD, FFmpeg - Raspberry Pi Please let me know if you have any questions or require further information.

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Portfolio-mappe

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Anmeldelser

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Viser 1 - 5 ud af 50+ anmeldelser
Filtrer anbefalinger ud fra:
5,0
$40,00 USD
Abu, was very knowledgeable and worked expeditiously.
Linux
Software Architecture
Asterisk PBX
VoIP
S
Flag for Bryan H.
@sharkbitz
25 dage siden
5,0
£47,00 GBP
Mohamed was very good on assisting with my project, he completed the task ahead of schedule and was very honest about the time spen to complete the work so that was very much appreciated, I will definitely be working with him again on future projects as was very helpful, knowledgeable, understanding and quick to respond when needed.
System Admin
Linux
Asterisk PBX
VoIP
G
Flag for Wayne H.
@Gidzy32
1 måned siden
5,0
$175,00 AUD
So much more to be done
VoIP
VMware
J
Flag for James X.
@james353
2 måneder siden
5,0
€650,00 EUR
Task performed professionally and in perfect timing, always available and supporting in fixing any unexpected problem. I strongly suggest to engage him because he is able to provide assurance about results both technically and in timing
Linux
Software Architecture
Asterisk PBX
VoIP
MySQL
+1 mere
H
Flag for Marco P.
@Hadrons
3 måneder siden
5,0
$100,00 USD
Very Proffesional ... I will hire him again !! Recomand
Linux
Software Architecture
Asterisk PBX
VoIP
MySQL
+1 mere
Brug Avatar.
Flag for Septimiu M.
@septimiumocanu
3 måneder siden

Erfaring

Technical Engineer Cloud Deployment and Ops

Virtuozzo
dec. 2022 - jan. 2024 (1 år, 1 måned)
● Technical Engineer at Virtuozzo, specializing in Cloud Deployment and Ops. ● Design and deploy Public and Hybrid cloud solutions for MSP, ISP, and Cloud Service Providers. ● Expertise in Infrastructure-as-a-Service and Application-as-a-service products. ● Proficient in Software-defined storage and software-defined Network Solutions. ● Managed Cloud Security and System Security. ● Plan to Deploy large-scale Hyper Converged infra for MSP, ISP

Senior Engineer Telecommunications

Nautilus SIP Pte
jul. 2019 - okt. 2022 (3 år, 3 måneder)
I am working as an Engineer in Telecommunications, in Cloud telephony service provider with Linux, SIP, Asterisk, Networking, and AWS. Keys achievement: Reduce customer complaints by 60%, with improved infra design. Removed bottleneck, Removed Single point of failure. Implemented Monitoring system, Automated server and service provisioning. Integration with Zendesk as voice channel provider, Design and Deployed WebRTC phone, Rearchitected AWS infra for cost optimisations.

Linux administrator

http://www.meshtechnologies.net
dec. 2012 - jun. 2017 (4 år, 6 måneder)
Dealing with VoIP, Web development, vtiger integration, Call Center, And asterisk PBX, VoIP billing solution, a2billing install, customization, Server Rent and Commercial VoIP software like voipswitch, VOS3000, Mor-12, MVTS, install, configure and, support.

Uddannelse

Msc in Cyber Security

De Montfort University, United Kingdom 2021 - 2022
(1 år)

Kvalifikationer

IELTS

British Council
2023
IELTS General Training

AWS Certified SysOps Administrator – Associate

Amazon Web Services Training and Certification
2020
https://www.youracclaim.com/badges/c9bddd3c-2214-4468-b5d5-f1d8ba1e668b

AWS Certified Solutions Architect – Profesional

Amazon Web Services Training and Certification
2020
https://www.youracclaim.com/badges/802e18ec-0750-4588-8965-23cf41f5947f?source=linked_in_profile

Publikationer

VoIP Business

Dhaka International University
Graduate paper

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Certifikationer

preferredfreelancer-1.png Preferred Freelancer Program SLA 1 97%
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