Halim Gebrael
Verified Expert in Engineering
DevOps Engineer and AWS Developer
Halim is a site reliability engineer and expert in architecting and maintaining AWS cloud-based solutions. He's specialized in designing and leading data migrations from legacy data centers to AWS and VMware public cloud platforms. Halim installed and integrated a highly complex call completion platform that improved the voicemail experience for users while increasing company profit. He is passionate about automation, orchestration, and DevOps and has created multiple CI/CD pipelines.
Portfolio
Experience
Availability
Preferred Environment
Python, Terraform, DevOps Engineer, Site Reliability Engineering (SRE), Bash, Ansible, Linux, Amazon Web Services (AWS), VMware, Automation
The most amazing...
...migration I delivered was of a complex project to AWS and VMware cloud that increased infrastructure quality and uptime.
Work Experience
Senior Site Reliability and DevOps Engineer
Aurea
- Designed, managed, and led the company’s migration activities from legacy data centers to AWS, VMware Cloud on AWS, and VMware on IBM.
- Designed and built a highly available hybrid cloud infrastructure on AWS and. VMware.
- Managed thousands of Linux and Windows servers in the cloud.
- Developed infrastructure automation scripts and performed corrective and preventive maintenance activities on live production systems.
- Delivered CI/CDs for several products using DevOps methodology.
- Installed, managed, and created monitoring for infrastructure and applications.
- Hired, coached, and managed a team of nine SREs to deliver the migration activities and built a highly scalable and hybrid infrastructure for our customers.
- Ran cost optimization tasks on AWS to decrease cost and move the products to a microservice architecture for better resiliency and scalability, decreasing infrastructure and operational costs.
VAS & BSS Consultant
Tecnotree
- Contributed to organizational project management activities such as project. charter and project management plan preparation.
- Provided input to sales and pre-sales teams related to RFXs and estimated. efforts and budgets required for each project.
- Installed BSS And VAS platforms on customer's on-premises.
- Performed corrective maintenance activities such as troubleshooting, resolution implementation, documentation production, and reporting of a trouble incident for live VAS and BSS services and platforms.
- Completed the installation and integration of the Tecnotree convergent billing. system and billing and invoicing platform at OMANTEL.
- Completed the “Call Completion Project” at DU UAE as a project manager and onsite engineer improving the voicemail experience for end users and increasing company profit.
- Completed the “Call Completion Project” at Zain KSA as project manager which helped to increase company profit.
- Led a team of five support engineers to deliver onsite installations for several VAS products. Assigned tasks and resources as required and followed up regularly to ensure delivery of major milestones.
- Drove several meetings with customers to discuss project technical requirements and address customers' concerns related to security, compliance, and redundancy.
VAS Engineer
MODULUS Telecom
- Contributed to the pre-sales and delivery activities for mobile solutions (ringback tones, instant messaging, call completion platform, roaming, USSD,. messaging GW, voice SMS, and SDP) and international airtime transfer.
- Handled the RFI/RFP proposals, study, and ranking of mobile solutions.
- Developed the Modulus Mediation solution: a cloud-based solution (AWS) whose purpose is to connect mobile application back ends with mobile operator networks.
- Installed the company's VAS products for customers on-premise.
- Provided support to our customer by troubleshooting different protocols (diameter, SMPP, CAP2, MAP, SS7, SIP, SIP-I, HTTP, TCP, UDP, RTP, RTCP, SIGTRAN, and more).
- Performed capacity planning, license expansions, and hardware upgrades based on system utilization and statistical trends.
Experience
Lift and Shift for Jive
https://www.jivesoftware.com/Call Completion Project at DU UAE
http://www.tecnotree.comSLI Lift and Shift
https://www.sli-systems.com/Education
Bachelor's Degree in Computer Communication Engineer
Holy Spirit University of Kaslik - USEK - Lebanon
Certifications
AWS Certified Solutions Architect – Professional
AWS
AWS Certified Advanced Networking – Specialty
Amazon Web Services
AWS Certified Solutions Architect Associate
AWS
Skills
Languages
Bash Script, Python, Bash, Java, C++
Tools
Nagios, Amazon Virtual Private Cloud (VPC), Azure Kubernetes Service (AKS), Terraform, VMware, Amazon EKS, GitLab, Ansible, Puppet, Apache, GitHub, NGINX, Grafana
Platforms
Linux, Amazon Web Services (AWS), Amazon EC2, Kubernetes, Oracle Cloud Infrastructure (OCI)
Other
Site Reliability Engineering (SRE), Load Balancers, DevOps Engineer, Value-added Services (VAS), SS7, SIP Protocol, SIP, DNS, BIND, NAT, Monitoring, Pulumi, Cloud Computing, Telecom Business Support Systems (BSS), Presales, HAProxy, MySQL DBA, Networking, Amazon RDS, VMware NSX, VMware vCloud, VMware VMotion, Elastic Load Balancers, Prometheus
Paradigms
Automation, DevOps
Industry Expertise
Telecommunications, Project Management
Storage
Databases, PostgreSQL, MySQL, PostgreSQL 10, HDFS
Frameworks
Hadoop
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