Renato A. Ferreira

Lead cybersecurity, telecommunications, cloud infrastructure, and corporate IT supporting the bank's core operations. Manage a R$5M budget and a team of 23 professionals. Key achievements: ✔ Redesigned the entire network architecture, eliminating recurring failure points caused by resource concentration in an office CPD with no data center-grade reliability. Migrated the security model to SSE with Netskope and Palo Alto firewalls across all branches, rewriting the business continuity model from the ground up. Chronic DNS instability fully resolved since late 2023. ✔ Optimized cloud costs through FinOps practices, achieving a 20% reduction and maintaining a recurring 10% reduction target every semester. ✔ Certified the bank's environment on AWS us-east — among the first Brazilian banks to operate on an international cloud region — to support Pix and Open Finance, overcoming QoS challenges on telecom links, RSFN load testing with JMeter, and mTLS integration with Advanced WAF. ✔ Coordinated full service recovery in under 3 hours during the global CrowdStrike outage in July 2024, with zero data loss. ✔ Implemented security monitoring infrastructure enabling rapid threat detection and containment, including network-level isolation of compromised third-party systems within hours of detection. ✔ Leading generative AI adoption across the organization (Gemini, ChatGPT, Claude), managing vendors, access control, and budget, while supporting teams in integrating AI-driven solutions into cloud deployment pipelines.

Technical pre-sales specialist for F5 Networks solutions, focused on application security, traffic optimization, and load balancing for financial institutions, banks, and insurance companies. Key achievements: ✔ Recognized as Best Pre-Sales Engineer of 2018 by F5 Networks Brazil, for technical excellence and direct impact on commercial results. ✔ Designed tailored solutions across the full F5 portfolio, translating complex infrastructure and security challenges into viable technical proposals aligned with business objectives. ✔ Conducted Proof of Concept engagements, workshops, and technical presentations at industry events, with a strong focus on application security for the financial sector. ✔ Built and maintained a hands-on technical showroom environment, enabling immersive demonstrations of F5 capabilities for prospects and clients. ✔ Produced technical and commercial proposals, detailed budgets, and responses to RFI/RFQ/RFP processes across complex sales cycles.

Senior technical lead for cybersecurity projects across financial institutions, insurance companies, industrial, and government sectors. Responsible for technical excellence in solution delivery, ensuring adherence to project requirements and effective use of security tooling. Key achievements: ✔ Led access control implementation for ATM networks, strengthening physical and logical security across banking environments. ✔ Deployed DDoS protection and Web Application Firewall solutions for internet banking platforms, ensuring high availability and integrity of online financial services. ✔ Implemented advanced WAF techniques to prevent automated and malicious access, with focus on bot mitigation and illegitimate traffic filtering. ✔ Integrated fraud detection systems for online financial transactions, combining automation, behavioral analysis, and applied security intelligence.

Sole technical specialist in a boutique cybersecurity and application delivery firm, serving large enterprises in financial, industrial, e-commerce, and government sectors. Operated across the full project lifecycle — from pre-sales and solution design to implementation and technical support. Key achievements: ✔ Implemented mTLS authentication using official government digital certificates (e-CPF/e-CNPJ) for public sector clients, ensuring secure, compliant, and reliable access control. ✔ Led upgrade and maintenance of application delivery infrastructure for one of Brazil's largest e-commerce groups, ensuring high availability and performance at scale. ✔ Designed and delivered application load balancing and data center projects, including web and corporate application performance acceleration for critical environments. ✔ Produced technical and commercial proposals, project scoping, and pricing for complex sales cycles, contributing directly to wins in highly regulated and demanding accounts.

Led technology strategy and product development at a corporate streaming and webinar company, focused on digital collaboration and telecommunications. Key achievements: ✔ Designed and developed an automated hybrid conferencing platform integrating VoIP telephony with live streaming — replacing a fully manual operation. The system autonomously connected to conference bridges, created rooms based on calendar schedules, captured audio from E1 circuit controllers, transcoded streams, and published them to a Wowza media server, eliminating operator dependency entirely. ✔ Scaled conference capacity significantly beyond traditional telephony bridge limitations by running the platform on AWS, enabling rapid on-demand capacity expansion to meet peak event demand. ✔ Expanded platform coverage to mobile devices and new digital channels, growing the user base and improving content consumption experience across corporate environments. ✔ Supported senior leadership in technology adoption decisions, with focus on scalability, performance, and cost-efficiency.