crivera@soc — bash — 80x24
~ whoami
Carlos Rivera Venegas
> whoami.jpg
[ contact_now ][ view_skills ]
guest@crivera:~$cat about.md

About me

Software Engineer graduated from UIA, passionate about technology for as long as he can remember.

More than 5 years of experience in cybersecurity, protecting real infrastructure.

In his free time he builds home labs, studies AI, and develops his own systems.

He's worked remotely from more than 10 countries doing what he loves.

neofetch
carlos.rivera.venegas@security
role:
Senior Cybersecurity Engineer
education:
UIA graduate
experience:
+5 years in cybersecurity
remote from:
10+ countries, working remote
off hours:
home labs, applied AI, building my own systems
guest@crivera:~$git log --oneline --graph

Experience

08/2025 — Present · Remote, Costa Rica

Security Architect

DeepSeas
  • +Owns day-to-day onboarding and operation of SIEM and EDR platforms for enterprise accounts.
  • +Leads customer onboarding for Microsoft Sentinel and Splunk — log ingestion, indexes, forwarders, and detection rules.
  • +Works daily across EDR platforms (Carbon Black, SentinelOne, Microsoft Defender for Endpoint, CrowdStrike) on migrations and detection tuning.
  • +Supported 50+ security platform migrations and serves as the Microsoft Subject Matter Expert (SME) for the account.
05/2024 — 08/2025 · Remote, Costa Rica

Cybersecurity Engineer

Microsoft
  • +Secured Azure deployments with CLI, PowerShell, and Runbooks to automate security controls.
  • +Designed and deployed hybrid cloud security with Sentinel, AIP, Defender, and ATP.
  • +Deployed Microsoft Sentinel and Defender for Endpoint to centralize threat monitoring and response.
  • +Automated cloud deployments with IaC (Bicep, ARM templates) and extended governance with Azure Arc.
08/2023 — 05/2024 · Remote, Costa Rica

Infrastructure Security Technician

Dell
  • +Resolved hardware and performance issues across Windows and Linux environments.
  • +Analyzed security and performance logs using Dell SupportAssist tooling.
  • +Hardened systems — applied patches, disabled unused services, configured RAID for data reliability.
  • +Managed cloud-based Linux server deployments and administration on Azure.
07/2022 — 08/2023 · Remote, Costa Rica

Security Engineer

Kyndryl
  • +Designed and implemented Microsoft Sentinel solutions to enhance threat detection.
  • +Fine-tuned Microsoft Defender settings, improving endpoint security and response.
  • +Managed email security tools (Proofpoint, KnowBe4) against phishing and other threats.
  • +Optimized Cisco Umbrella deployments, strengthening network security and traffic filtering.
01/2021 — 06/2021 · Hybrid, Costa Rica

SOC Analyst Intern

IBM
  • +Monitored and investigated security incidents across client environments.
  • +Analyzed security events with QRadar to identify potential threats.
  • +Managed alerts across multiple vendors (IBM, Cisco, Juniper) for prompt incident response.
  • +Led and coordinated a team of analysts, covering 24/7 on-call incident response.
01/2020 — 11/2020 · Remote, Costa Rica

Network Security Engineer

Consultek
  • +Monitored network traffic and analyzed logs to detect potential threats.
  • +Configured and maintained firewalls, VPNs, and IDS/IPS to strengthen network security.
  • +Conducted vulnerability assessments and proposed mitigation strategies.
  • +Contributed to disaster recovery and business continuity planning.
$ cat education.txt
02/2025 — 11/2026
Master's Degree, Generative AI Solutions
EBIS Business Tech School
01/2021 — 2024
Bachelor's Degree, Software Engineering
Universidad Internacional de las Américas
02/2015 — 11/2020
Technician, IT Support
Ctp del Este
guest@crivera:~$ls -la ~/projects

Projects

Endpoint Health Dashboard

SentinelOne fleet-wide baseline & compliance reporting
Endpoint Health Dashboard screenshot

Customer names and report links cropped out of view for client privacy.

Built a dashboard that pulls every endpoint and site from a company's SentinelOne tenant via API, then checks each agent's version and OS against SentinelOne's officially published support baseline — flagging what's current, aging, or legacy. Generates per-customer reports that help IT and security teams keep agents up to date and stay within support standards.

  • SentinelOne API
  • Python
  • Dashboards
  • Reporting

AI Research Agent

Agentic n8n pipeline for citation-backed, self-correcting research reports
AI Research Agent report output — executive summary and key findings

Live 'quick' depth run — 28 sources, QC score 85/100.

Numbered source list with real URLs

Every citation traces to a real, retrievable source — nothing invented.

The four-stage pipeline in the n8n workflow editor

The actual pipeline: trigger & validation → planning & web research → synthesis & QC → finalize & respond.

An agentic n8n pipeline that turns a one-line topic into a citation-backed, quality-checked research report. It plans research questions, searches the live web, ranks sources by credibility, extracts individually-sourced facts, catches contradictions between sources, and writes a polished report — running it through an automated QC gate that sends it back for correction, up to twice, before returning it. Every claim traces back to a real, retrievable URL, and the pipeline runs identically on OpenAI or a fully local Ollama model. The example below is a live 'quick' depth run on "AI in Cybersecurity: Current Applications and Emerging Risks in 2026" — 28 real sources, QC score 85/100.

  • n8n
  • OpenAI
  • Ollama
  • Tavily
  • LangChain
  • JavaScript

NovaTech Sales Intelligence RAG Chatbot

AI sales assistant, 100% local — no traditional backend, entirely orchestrated in n8n
NovaTech Sales Intelligence agent workflow in n8n, with a live chat test

The full agent graph — 7 tools wired in, live chat test on the left, real execution log (~1543 tokens, 22.4s) on the right.

An internal B2B sales chatbot built entirely as n8n workflows — no separate app or frontend — combining RAG over a 125-document knowledge base with real-time structured queries against Postgres. Runs entirely on local Ollama models (qwen3:8b + qwen3-embedding): zero cloud API dependency, zero per-token cost. The agent combines 7 tools: semantic search (pgvector) for judgment calls — positioning, objection handling, competitive comparisons — and real-time SQL queries via PostgREST for exact facts like pricing, accounts, and deals, never inventing a number and citing its sources on every answer. Validated with real live testing, not just code review — that process found and fixed 12 real bugs (n8n/local-agent framework incompatibilities, data-flow semantics, and an architecture mismatch between real Supabase and self-hosted PostgREST), each documented with root cause and fix. Verified against the live agent with an end-to-end battery of 20 questions, backed by full synthetic data: 484 chunks across 125 documents.

  • n8n
  • Supabase
  • Postgres
  • pgvector
  • Ollama
  • PostgREST
guest@crivera:~$ls -la ~/stack

Technologies & tools

$ ls ~/stack/edr/

EDR

  • S1SentinelOne
  • CSCrowdStrike
  • MDEMicrosoft Defender for Endpoint
$ ls ~/stack/network/

Network / Traffic analysis

  • Wireshark
  • SUSuricata
  • Snort
  • NMNmap
$ ls ~/stack/siem/

SIEM

  • SENMicrosoft Sentinel
  • Splunk
  • Elastic SIEM
$ ls ~/stack/dev/

Languages & dev tools

  • JavaScript
  • Python
  • Bash
  • PSPowerShell
  • HTML5
  • CSS
  • Claude Code
  • CXCodex
  • Git
  • GitHub
  • Postman
  • Node.js
  • React
  • YAML
  • JSON
  • SQLSQL
  • Supabase
$ ls ~/stack/ai/

AI & Automation

  • Ollama
  • OLMOpenLLM
  • n8n
  • Make
  • Hugging Face
  • LangChain
  • AOAIAzure OpenAI
  • FDYMicrosoft Foundry
  • LOVLovable
$ ls ~/stack/cloud/

Cloud & Infrastructure

  • AZAzure
  • AWSAWS
  • Google Cloud
  • Docker
  • Kubernetes
  • Terraform
$ ls ~/stack/scanners/

Vulnerability Scanners

  • NENessus
  • OVOpenVAS
guest@crivera:~$tail -f achievements.log

Achievements

[20+]
Helped 20+ people break into cybersecurity with a clear, realistic roadmap — no hype, no smoke and mirrors.
[10+]
Worked remotely from more than 10 countries, doing work he's genuinely passionate about.
[SPEAK]
Presented a technical talk on Microsoft Graph API security at Pwned, one of the region's most prominent cybersecurity conferences.www.pwnedcr.com
Speaker badge from Pwned CR — DC11506
[30+]
Trained teams of 30+ people on Microsoft security technologies.
[SME]
Serves as Microsoft Subject Matter Expert for S&P 500 companies.
[30+]
Helped 30+ multinational clients with infrastructure and SIEM onboarding, strengthening their security posture and compliance with ISO 27001, HIPAA, and CIS Benchmark.
guest@crivera:~$tail -f certifications.log

Certifications

[VERIFIED]AZ-500Azure Security EngineerMicrosoft
[VERIFIED]SC-200Security Operations AnalystMicrosoft
[VERIFIED]AZ-900Azure FundamentalsMicrosoft
[VERIFIED]SEC+Security+CompTIA
[VERIFIED]CLD+Cloud+CompTIA
[VERIFIED]JPTJunior Penetration TestereLearnSecurity / INE
[VERIFIED]CCPAWS Certified Cloud PractitionerAWS
[VERIFIED]ACEAssociate Cloud EngineerGoogle Cloud
guest@crivera:~$curl -O roadmap.pdf

Free Cybersecurity Starter Roadmap

A short, no-fluff PDF covering the four main ways into cybersecurity, a basic starter path, and which entry-level certifications actually matter. It's the 10,000-foot view — enough to get oriented. If you want a roadmap built around your own background and timeline instead, that's what career coaching is for.

guest@crivera:~$./contact --send

Contact

Got an automation idea, a cloud environment that needs hardening, or want a roadmap into the field? Reach out.

LIVE~/home
00:00:00||