Available for new opportunities

Mohamed DevOps Engineer

Building and scaling cloud infrastructure on AWS. Automating deployments with Terraform & GitHub Actions. Delivering production-grade systems for SaaS platforms and enterprise clients.

6+
Months Experience
8+
Projects Delivered
3+
AWS Services Mastered
2
Companies Served
View Projects → Get in Touch
Technical Stack
Tools & Technologies
☁️

Amazon Web Services

EC2 RDS (MySQL) S3 IAM Route 53 CloudFront Lambda WorkMail SES ACM VPC CloudWatch Secrets Manager
🐧

Linux Administration

Ubuntu Server Nginx Apache Certbot / SSL Bash Scripting Cron Jobs SSH Hardening UFW / Firewall Process Management
🏗️

Infrastructure as Code

Terraform Terraform Modules Remote State (S3) DynamoDB Locking Multi-Region Variable Management
⚙️

CI/CD & Automation

GitHub Actions OIDC Auth Docker Self-hosted Runners Blue/Green Deploy Auto Rollback Matrix Builds
🔧

Backend & APIs

Laravel (PHP) REST APIs WhatsApp Business API Meta Developer Platform Webhook Design MySQL Chatwoot
📊

Monitoring & Security

CloudWatch Logs Telegram Alerts DNS Monitoring IAM Security Review SSL Management Uptime Monitoring
Work History
Experience
Oct 2025 — Present Nexus Smart Solutions · Dubai

DevOps / Infrastructure Engineer

Leading all cloud infrastructure and DevOps operations for a Dubai-based SaaS software company. Built and scaled the NEO Platform — a Terraform-driven multi-tenant hosting service on AWS. Managed a full AWS account migration, implemented CI/CD pipelines across multiple products, and integrated third-party services including WhatsApp Business API and AWS WorkMail.

  • Designed and deployed the NEO Hosting Platform from zero using Terraform (EC2, RDS, S3, IAM, CloudFront, Route 53)
  • Led complete AWS account migration (including RDS, WorkMail, EC2 across us-east-1 and us-east-2)
  • Built GitHub Actions CI/CD pipelines with OIDC auth, matrix strategies, and auto-rollback
  • Integrated WhatsApp Business API with Laravel backend (Meta Developer Platform + Webhooks)
  • Implemented Lambda-based WorkMail backup automation system
  • Conducted full security review of infrastructure (IAM, CloudTrail, GuardDuty, Secrets Manager)
Oct 2024 — Present Upwork · Freelance

Freelance Linux & AWS Engineer

Providing hands-on AWS and Linux engineering services to independent clients. Specializing in EC2 production recovery, DNS migrations, and infrastructure troubleshooting.

  • Recovered production EC2 instance from 502 Bad Gateway + SSH failure in under 2 hours
  • Performed Cloudflare-to-Route 53 nameserver migration with zero downtime
  • Built DNS propagation monitoring script with real-time Telegram notifications
  • Set up Chatwoot self-hosted instance on AWS for Instagram message routing
2018 — 2024 Multiple Organizations

Senior Content Creator (Prior Career)

6 years in the content creation and digital production, developing strong communication, technical writing, and project management skills that directly inform proposal writing, documentation, and client-facing DevOps work today.

Featured Work
Projects
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01 — FLAGSHIP PROJECT
AWS Terraform GitHub Actions SaaS Laravel API Docker

NEO Platform — Nexus SaaS Hosting Engine

A full Terraform-driven SaaS infrastructure engine supporting multi-tenant hosting plans (Core / Scale / Titan) with an AWS add-on marketplace. Designed to provision isolated client environments on AWS with one-click CI/CD deployments and a 60-day free trial system.

  • Architected multi-tier Terraform modules: networking (VPC/subnets), compute (EC2), database (RDS MySQL), storage (S3), and CDN (CloudFront)
  • Implemented 3 hosting tiers with resource isolation per client: Core (1 vCPU / 1GB), Scale (2 vCPU / 4GB), Titan (4 vCPU / 8GB)
  • Built GitHub Actions CI/CD with OIDC authentication (no long-lived AWS keys), matrix strategy for parallel deploys, and automated rollback job
  • Added 60-day free trial logic with automated expiry tracking via Laravel API endpoints
  • Designed AWS marketplace add-ons: extra storage, CDN, dedicated RDS, ElasticSearch, Redis
  • Conducted security audit: scored 7.8/10, identified and remediated IAM over-permissions, added CloudTrail and GuardDuty recommendations
  • Wrote comprehensive README documentation and client dashboard API specification
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02
AWS RDS WorkMail Lambda Route 53

Full AWS Account Migration

End-to-end migration from a legacy AWS account to a new account under a hard deadline, including all production workloads across two regions.

  • Migrated RDS MySQL snapshots with point-in-time restoration to new account
  • Migrated AWS WorkMail organization for with zero mail loss
  • Re-established GitHub Actions workflows for EC2 deployments in us-east-1 and us-east-2
  • Built Lambda function for automated WorkMail backup with S3 archiving
  • Updated all Route 53 hosted zones, DNS records, and ACM certificates post-migration
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03
WhatsApp API Laravel AWS

WhatsApp Business API Integration

Full integration of WhatsApp Business API into the Nexus Laravel application via the Meta Developer Platform, enabling client communication automation.

  • Configured Meta Developer Platform: App creation, Business Verification, phone number registration
  • Built and secured webhook endpoint on Laravel (signature validation, event routing)
  • Implemented message send/receive flow with conversation state management
  • Deployed on AWS EC2 with HTTPS (ACM + CloudFront) for webhook compliance
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04
Route 53 Bash AWS

Zero-Downtime DNS Migration & Monitoring

Cloudflare-to-Route 53 nameserver migration for production domains (nexus-dxb.com, nexusdxb-erp.com) with custom monitoring to track propagation in real time.

  • Planned and executed nameserver cutover with TTL pre-lowering strategy
  • Built Bash monitoring script checking DNS propagation every 60 seconds across 8 global resolvers
  • Integrated Telegram Bot API for instant propagation alerts
  • Diagnosed and resolved A record loss incident and ERR_TOO_MANY_REDIRECTS post-migration
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05
Linux EC2 Nginx

Production EC2 Emergency Recovery

Critical incident response: recovered a freelance client's production EC2 instance that was simultaneously serving 502 Bad Gateway and rejecting all SSH connections.

  • Used AWS Systems Manager Session Manager to bypass broken SSH access
  • Diagnosed Nginx misconfiguration causing upstream failure (502)
  • Restored PHP-FPM service, fixed socket path configuration, validated SSL certificates
  • Full recovery under 2 hours with root cause documentation for client
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06
Docker Linux AWS EC2

Chatwoot Self-Hosted on AWS

Deployed Chatwoot (open-source customer support platform) on AWS EC2 via Docker Compose, configured for Instagram message routing integration for a real estate client (Taraf Estate).

  • Set up Chatwoot with Docker Compose on Ubuntu EC2 (t3.medium)
  • Configured Nginx reverse proxy with Let's Encrypt SSL (Certbot)
  • Integrated Instagram channel via Meta Business OAuth flow
  • Troubleshot and resolved Instagram OAuth callback mismatch issues
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07
SES WorkMail Route 53

AWS SES & WorkMail DNS Configuration

Full email infrastructure setup for Nexus domains — configuring SES sending, WorkMail receiving, and all DNS records (MX, SPF, DKIM, DMARC) in Route 53.

  • Configured SES in us-east-1 with domain verification and DKIM signing
  • Set up AWS WorkMail organization with custom domain routing
  • Created all DNS records in Route 53: MX, TXT (SPF/DMARC), CNAME (DKIM)
  • Tested end-to-end email deliverability and resolved DMARC policy failures
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08
Docker Terraform Linux

Continuous Learning & Certification Path

Active self-development roadmap with hands-on lab completion and AWS certification preparation.

  • Completed Docker Training Course for Absolute Beginners — KodeKloud
  • AWS SAA-C03 in preparation: scored 87% on foundational quiz, 50% on advanced (identified gaps in serverless + messaging)
  • Active labs: Kubernetes (CKA path via KodeKloud), Python scripting for automation
  • Pursuing Terraform Associate certification alongside production Terraform usage
Background
About Me

I'm a DevOps Engineer based in Cairo, Egypt, working remotely for Nexus Smart Solutions — a Dubai-based software company — and taking on freelance cloud infrastructure work on Upwork.

My journey into DevOps started from a solid 6-year background in the Content creation industry, which gave me unusually strong communication, documentation, and client-facing skills that most engineers lack. I pivoted into cloud infrastructure and have been building production systems hands-on since day one.

I specialize in AWS infrastructure, Terraform IaC, and GitHub Actions CI/CD. I've worked on everything from SaaS platform architecture to emergency EC2 recovery, from DNS migrations to email infrastructure and API integrations.

My working style: step-by-step execution with full documentation, production-ready outputs (not just snippets), and honest assessments. I don't over-promise — I ship working systems.

Certifications & Learning
  • 🐳
    Docker for Absolute Beginners
    KodeKloud · Completed
    Completed
  • ☁️
    AWS Solutions Architect Associate
    SAA-C03 · In Preparation
    Studying
  • 🏗️
    HashiCorp Terraform Associate
    003 · Planned
    Planned
  • ⎈
    Certified Kubernetes Administrator
    CKA · KodeKloud Path
    In Progress
Get In Touch
Open to Opportunities

Available for DevOps roles, cloud infrastructure contracts, and freelance Linux/AWS engagements. Let's build something production-ready together. Email me: mohamedbentarek111@gmail.com

💼 LinkedIn 🐙 GitHub