Omar Maya
Verified Expert in Engineering
System Administrator and Software Developer
Montreal, QC, Canada
Toptal member since May 13, 2022
Omar is a cloud platform engineer and full-stack software developer with 14+ years of enterprise experience. He specializes in AWS architecture, Linux systems, Docker containerization, and back-end development with Laravel and Python. Known for driving zero-downtime cross-cloud migrations, FinOps cost optimization, and autonomous AI-driven operational workflows, Omar designs scalable, resilient platforms that solve complex engineering challenges.
Portfolio
Experience
- Linux - 8 years
- PHP - 5 years
- Laravel - 5 years
- Docker - 4 years
- Amazon EC2 - 4 years
- GitLab CI/CD - 4 years
- Amazon Web Services (AWS) - 4 years
- Python - 4 years
Work Experience
Senior System Administrator - Cloud Platform Infrastructure
Insilico Medicine
- Migrated GPU workloads from CoreWeave to AWS EC2 and SageMaker across 12 servers, transferring research data via DataSync to S3/EFS and pushing custom Docker images to ECR with zero R&D downtime.
- Deployed an autonomous AI agent on AWS EC2 via Claude API and Azure APIM, integrating Slack and Atlassian CLIs to automate Jira ticket triage and prevent SLA breaches.
- Drove AWS FinOps savings by purchasing a 1-year Savings Plan and cleaning up 1,000+ idle EBS volumes, saving $20,000 upfront and $5,000 in recurring monthly cloud costs.
- Enforced multi-account governance using AWS Organizations SCPs, requiring mandatory resource tagging on EC2, S3, and SageMaker to track granular team spending in Cost Explorer.
- Automated developer IAM access key rotation using Python and AWS Lambda, enforcing 30-day credential lifecycles and proactive Slack rotation notices.
- Centralized multi-cloud identity management by integrating AWS IAM Identity Center with Microsoft Entra ID via SSO, establishing standard RBAC permission sets.
- Architected AWS VPC networking using Transit Gateway, IPsec VPNs, and pfSense firewalls, while deploying Docker observability stacks via Prometheus and Grafana.
- Secured hybrid multi-cloud topologies across AWS and Azure by provisioning Azure VNets and configuring Azure WAF rules to protect customer-facing SaaS endpoints.
- Strengthened platform security posture by engineering automated secret rotation and encryption-at-rest lifecycles using AWS Secrets Manager and AWS KMS.
Software Developer
Christian Globe LLC
- Modernized a legacy CodeIgniter subscription web application by refactoring core back-end components into Laravel over a five-month cycle, expanding developer release velocity and maintainability.
- Engineered full-stack application features utilizing Laravel and Vue while designing resilient MariaDB database schema migrations to ensure data consistency during platform modernization.
- Introduced automated PHPUnit feature and integration testing suites covering authenticated RBAC routes, HTTP API responses, and background email dispatch events.
- Built and maintained automated YAML-based CI/CD deployment pipelines within GitLab to streamline code linting, automated testing, and multi-environment application builds.
- Administered AWS cloud infrastructure supporting production workloads, configuring Amazon EC2 compute instances, EBS lifecycle snapshot policies, Route 53 DNS routing, and least-privilege IAM policies.
Infrastructure Team Lead/Technical Expert
Atos
- Led enterprise UNIX infrastructure operations for Franklin Templeton Investments, maintaining 99.9%+ platform availability across a fleet of 1,300+ UNIX and Linux production servers.
- Automated OS patch management and server provisioning workflows using BMC BladeLogic and Bash, cutting production maintenance outage windows by 75% (from 4 hours to 1 hour) across 400 Solaris servers.
- Audited and identified an underlying ServiceNow weekend timestamp defect on Sev3 and Sev4 tickets, eliminating an erroneous 2-day penalty and preventing client contractual SLA breaches.
- Administered mission-critical Oracle SPARC/Solaris environments utilizing LDOM virtualization, JumpStart automation, and Veritas Cluster/Volume Manager (VCS/VxVM) for high availability and disaster recovery.
- Deployed and maintained RHEL virtual machines on VMware vSphere clusters integrated with enterprise EMC and NetApp SAN storage while governing change management in ServiceNow.
Systems Engineer
BBVA Bancomer
- Administered over 350 production UNIX and Linux enterprise servers supporting high-volume online banking operations across LATAM branches and U.S. affiliate Compass Bank.
- Executed automated Bash and Shell scripts to enforce baseline OS security hardening and configuration standards across mission-critical financial systems.
- Configured, deployed, and maintained enterprise identity and directory access layers utilizing IBM TAMeb reverse proxies and Oracle DSEE (LDAP).
- Defined compute and storage technical specifications to ensure capacity planning and optimal infrastructure performance for high-availability banking workloads.
Project History
Wimo.me - The Internet's Lost and Found
https://wimo.meEducation
Bachelor's Degree in Computer Science
University of Saskatchewan - Saskatoon, SK, Canada
Certifications
ServiceNow Certified System Administrator
ServiceNow
Red Hat Certified System Administrator
Red Hat
Oracle Certified Professional
Oracle
Skills
Libraries/APIs
Vue, REST APIs, Claude API, Slack API
Tools
Shell, Amazon Virtual Private Cloud (VPC), Git, VMware, GitLab CI/CD, AWS IAM, Amazon SageMaker, Amazon Elastic Container Registry (ECR), AWS DataSync, AWS Cost Explorer, Grafana, pfSense, VMware vSphere, Claude Code, Claude, Veritas Cluster Server, JumpStart, Amazon Elastic Block Store (EBS), AWS Command Line Interface (CLI)
Languages
JavaScript, C, Java, Python, PHP, HTML5, CSS3, MIPS, Assembly, Bash, YAML, SQL
Frameworks
Laravel, Bootstrap, CodeIgniter
Platforms
Unix, Amazon Web Services (AWS), Amazon EC2, Docker, Linux, AWS Lambda, Visual Studio Code (VS Code)
Storage
Amazon S3 (AWS S3), MySQL, MariaDB, Amazon EFS, Microsoft Entra ID, Veritas Volume Manager, NetApp, Database Management Systems (DBMS), PostgreSQL
Paradigms
Object-oriented Programming (OOP), Automation
Other
System Administration, IT Project Management, Shell Scripting, Oracle Solaris, Network Architecture, Technical Leadership, RHEL, ServiceNow, AWS Transit Gateway, Jira Service Management, AWS Organizations, Amazon Route 53, Prometheus, Microsoft Azure, BladeLogic, Ubuntu Server, Full-stack Development, Networking, Architecture, Software Development, Networks, LDAP, Web Development, Oracle Directory Server Enterprise Edition (ODSEE), IBM Tivoli Access Manager (TAM), Reverse Proxy, Capacity Planning, System Hardening, SPARC, LDoms, SANs, High Availability (HA), Disaster Recovery (DR), AWS IAM Identity Center, FinOps, Algorithms, Data Structures, Computer Architecture, Operating Systems, Software Engineering, AWS Management Console
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