$ Victor GrenuAWS Infrastructure & Security Architect

// Securing, automating, and optimizing AWS infrastructure since 2017.

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Victor Grenu AWS Certifications Badges
6x AWS Certified

About Me

  • experience 19+ years in IT, 9+ on AWS
  • focus Security reviews, architecture, DevSecOps, FinOps
  • status Independent consultant, based in France, working worldwide
  • builds unusd.cloud (AWS cost optimization) & IAMTrail (IAM policy archive)
Cloud Security
Infrastructure as Code
DevSecOps
FinOps
Automation
Offensive Security

What I Do

Freelance AWS Infrastructure & Security Services

AWS Architecture

Design, review, and optimize your AWS infrastructure for security, scalability, and cost-efficiency.

Security Audits & Hardening

Identify vulnerabilities, implement best practices, and secure your AWS environment end-to-end.

Automation & DevSecOps

Automate deployments, security controls, and compliance with Infrastructure as Code and CI/CD pipelines.

Cloud Cost Optimization

Analyze and reduce your AWS spend with actionable recommendations and automation.

Customers

Open Source Projects

Selected work for the AWS Security community

πŸ›‘οΈ AWS Security Survival Kit

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Comprehensive security monitoring and alerting solution for AWS accounts. Includes CloudWatch dashboards and automated security controls.

View on GitHub

πŸ” IAMTrail

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Full version history and diffs for 1,525+ AWS Managed IAM Policies, archived since 2019. Catch every silent policy change AWS makes.

Visit IAMTrail

🌐 Subnet Watcher

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Monitor available IPs in VPC subnets using CloudWatch metrics. Avoid IP shortages with proactive alerts.

View on GitHub

πŸ•΅οΈ AWS Trustline

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Analyze AWS IAM and S3 policies to identify third-party and external access. Detects vendors, unknown accounts, and confused deputy risks in your AWS environment.

View on GitHub
Want to see more? Check out many more projects on GitHub

unusd.cloud

AWS Cost Optimization Made Simple

The garbage collector for your AWS: identify unused resources, reduce costs, and shrink your attack surface. 700+ users, $2.8M+ savings detected, 20+ AWS services covered.

Visit unusd.cloud Read the Docs
30 free scans • No credit card required • Available on AWS Marketplace
OPEN SOURCE

IAMTrail

AWS Managed Policy Changes Archive

AWS silently updates Managed IAM policies. IAMTrail catches every change with full diffs since 2019. 1,525 policies tracked, 4,470+ commits archived across 424 AWS services.

Explore IAMTrail   View Source
Free, no account needed • Email subscriptions available

Writing

Thoughts on AWS, security, and cloud engineering

I write about AWS security best practices, cloud architecture patterns, DevSecOps workflows, and lessons learned from real-world engagements.

  Read on zoph.me

Results

Real outcomes from real engagements

6x AWS Certified

Solutions Architect, Security Specialty, Data Analytics, SysOps, Developer, and more.

12+ Enterprise Clients

Trusted by Saint-Gobain, Microsoft, ENGIE, Google, Ponant, and others across industries.

9+ Years on AWS

19+ years total in IT infrastructure, with deep focus on AWS security since 2017.

$2.8M+ Savings Found

Through unusd.cloud and hands-on FinOps engagements across hundreds of AWS accounts.

Get in Touch

Let’s work together on your AWS journey