Cloud & AWS
Cloud architecture designed around resilience, access and cost.
[ RAMDEL / SYSTEMS ]DEVSECOPS / CLOUD / AI
MARIO DE JESUS / Montreal, QC
Building secure, scalable cloud systems with AI-powered automation. 15+ years turning complex security challenges into measurable business outcomes.
Scroll to explore SIGNAL: CONNECTED / 01
111+Vulnerabilities Remediated
92%Compliance Score
99.9%Uptime Maintained
46%AWS Cost Reduction
01 / Capabilities
From architecture to operation.
A practical approach to building, securing and operating production systems.
DevOps & CI/CD
Repeatable delivery pipelines and infrastructure as code.
Security
Security controls embedded across the lifecycle.
Languages & Automation
Automation and software that make complex operations clearer.
> ramdel@systems:~$
Systems are stronger when security is part of the architecture, not an afterthought.
02 / Selected work
Real problems, measurable outcomes
Explore five case studies in detail.
Cloud Security01 / 05AWS Security TransformationFrom 45% to 92% compliance in 8 monthsRead case study Cloud Infrastructure02 / 05AWS Cost Optimization46% cost reduction without performance trade-offsRead case study DevSecOps03 / 05CI/CD Security PipelineSecurity-first deployments at 10× the velocityRead case study Platform Engineering04 / 05Multi-Tenant AI Agent PlatformZero open ports. Per-tenant isolation. Production AI agents.Read case study Cybersecurity05 / 05Cybersecurity Compliance Program29% → 87% compliance across 5 security frameworksRead case study
03 / The engineer
Security-first engineer with a bias for automation
DevSecOps Engineer and Technical Lead with 15+ years driving security-first initiatives, cloud transformation, and cross-functional team leadership. I specialize in AWS security architecture, vulnerability remediation at scale, and building resilient systems with measurable business impact. Currently based in Montreal (open work permit, no sponsorship required) and open to opportunities across Canada.
Enterprise Security Transformation
Led remediation of 111+ critical findings across 23 AWS services, improving compliance from 45% to 92% in under a year
Infrastructure Cost Optimization
Reduced AWS infrastructure costs by 46% through right-sizing, lifecycle policies, and automated resource management
Technical Leadership
Led cross-functional teams of 14+ professionals across development, QA, and DevOps disciplines
AI/ML Innovation
Designed and shipped a machine learning product recommendation system with real-time Elasticsearch pipelines
Experience
Current
DevSecOps Engineer / Technical Lead
ArkusNexus
March 2020 – Present
Leading enterprise AWS security architecture, automated vulnerability remediation, and DevSecOps culture adoption for a cross-functional team of 14.
Tech Lead / Full Stack Developer
Front Runner
January 2019 – March 2020
Led security-first development for containerized e-commerce platforms, CI/CD pipelines, and a team of 6 engineers.
Senior Developer – Security Focus
Softtek
August 2012 – January 2019
Conducted enterprise security audits and penetration testing across Java, .NET, PHP, and database stacks.
04 / Connect
Let us build something resilient.
Tell me about your platform, your risks or the system you want to improve.