Open to opportunities

Joao Kienen

@joaokienen

Message

Security Engineer building automated detections and enterprise security automation.

Brazil

Message

What I'm looking for

I’m looking for a security team where I can automate detections and security operations with CrowdStrike/SIEM, build reliable pipelines, and contribute to SOC workflows and incident response improvements with strong engineering standards.

I’m a Security Engineer focused on operating and improving enterprise security platforms end-to-end, from provisioning and health checks to detection engineering and incident response readiness. I lead CrowdStrike engineering efforts, integrating APIs to manage EDR, IDP, and workflows while streamlining operations through reliable automation.

In my current role, I developed automation pipelines in Python and REST APIs, eliminating recurring manual tasks for host visibility and critical log collection. I also designed and implemented a data lake architecture connected to 20+ API endpoints and 40+ business rules in production, delivering historical telemetry to clients and internal teams.

I’ve built practical security capabilities for real operations: creating DLP policies, integrating SIEM, developing correlated detection use cases, and documenting incident response playbooks. Previously, as an IT Infrastructure Analyst, I strengthened anti-phishing controls with DKIM/DMARC/SPF, automated DNS provisioning with Ansible and APIs, and supported Linux monitoring, firewall administration, and AWS environment migrations.

Experience

Work history, roles, and key accomplishments

Current

Security Engineer

Current

Unifique

May 2022 - Present (4 years 1 month)

Led CrowdStrike engineering for customer provisioning, automated health checks, and API-managed EDR, IDP, and Workflows. Built Python and REST automation pipelines that eliminated 100% of recurring manual tasks and delivered historical telemetry via a data lake integrating 20+ API endpoints and 40+ business rules.

Crowdstrike Microsoft Defender Netskope Tenable Wazuh SOAR PAM Python Incident Response

IT Infrastructure Analyst

Unifique

Sep 2021 - May 2022 (8 months)

Administered Windows and Linux infrastructure with a focus on stability, security, and performance. Implemented DKIM, DMARC, and SPF for active domains and automated DNS provisioning using Ansible and API integrations to strengthen protection against phishing and email spoofing.

Linux Windows Administration DNS DKIM DMARC)SPF Ansible API Integration Email Security Shared Hosting Migration

IT Infrastructure Analyst

Unifique

Sep 2020 - Sep 2021 (1 year)

Managed centralized DNS infrastructure with server-side automation scripts and configured advanced firewall rules for high-density server environments. Supported AWS environment migrations and improved proactive incident detection through advanced Linux monitoring and alerting.

Firewalls AWS Migration Alerting Scripting Network Security Email Infrastructure System Administration

Technical Support Assistant

Unifique

Dec 2019 - Sep 2020 (9 months)

Provided technical support via phone and WhatsApp, troubleshooting issues and assisting with technical inquiries. Managed switches, routers, and routerboards by analyzing and configuring interfaces, and handled ticket registration and visit scheduling.