Lead Security Engineer – Threat Detection

Nubank

. Analyze cyber threat intelligence, emerging attack trends and security telemetry to develop robust detections and threat models .

Posted 9/20/2026full-timeSão Paulo • BrazilSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Threat Hunting, Incident Response, and the development of detection-as-code solutions, while leveraging AI and machine learning for enhanced security operations. Proven ability to lead teams, mentor engineers, and foster collaboration in a high-performance environment.

Highest-signal resume keywords

Threat HuntingIncident ResponseDetection-As-Code SolutionsSIEM and EDR ToolsCloud Security Principles

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Threat HuntingIncident ResponseDetection-As-Code SolutionsSQLSecurity Operations

Soft Skills

Strong Communication SkillsTeam LeadershipCollaborationMentorship

Tools & Technologies

SIEM ToolsEDR ToolsWAFsFirewallsIDS/IPS

Industry Keywords

Cyber Threat IntelligenceAI and Machine LearningMITRE ATT&CKSecurity TelemetryCloud Environments

Tech Stack

Tools & technologies

AWSCloudFirewallsSQL

About the role

Key responsibilities & impact

Analyze cyber threat intelligence, emerging attack trends and security telemetry to develop robust detections and threat models
Reduce false positives and improve the efficiency of security operations
Leverage AI and machine learning across anomaly detection, behavioral analytics, alert triage, threat intelligence enrichment, investigation prioritization and response automation
Lead adoption of reliable, measurable and secure AI-enabled security capabilities
Define validation, quality, explainability and security controls for AI-assisted capabilities
Lead Purple Team activities with Offensive Security, Threat Intelligence, Incident Response and Engineering
Translate adversary behaviors into realistic attack simulations, adversary emulation plans and detection validation scenarios mapped to MITRE ATT&CK
Identify detection and prevention gaps, validate security controls, measure detection coverage and drive remediation
Establish feedback loops between offensive and defensive teams to improve detection, investigation and response
Define success criteria and track detection coverage, validation success rate, false-positive reduction, investigation time, response efficiency and remediation cycle time
Build and lead a high-performing team, mentor engineers and foster ownership, accountability, collaboration and continuous learning
Partner with Security Engineering, Threat Intelligence, Software Engineering and Incident Response to build scalable security event-data solutions and resilient security architecture
Support Security leadership in building a world-class security organization
Ensure detection processes meet auditing requirements and support clear communication with regulatory bodies

Requirements

What you’ll need

Solid hands-on experience with Threat Hunting and Incident Response, including handling and resolving complex security incidents
Experience as a technical leader in the identification, analysis and response to complex security threats, providing mentorship and guidance to team members
Experience developing and maintaining detection-as-code solutions to automate threat identification and response
Proven experience in information security operations, with expertise in managing, analyzing and deriving insights from logs and other security-related data
Proficiency with SIEM and EDR tools, and with security platforms such as WAFs, firewalls (e.g. Palo Alto, Cisco ASA) and IDS/IPS
Experience using and integrating threat intelligence feeds to improve detection
Proficiency in SQL for querying and managing security-related databases
Knowledge of cloud security principles and experience securing cloud environments across providers (e.g. AWS)
Track record of developing processes, measuring results and delivering continuous improvement
Strong communication skills, a genuine team player and team leader, able to thrive in a team where diversity is key to high performance
Advanced English

Benefits

Comp & perks

Chance of earning equity at Nubank
Food/ Meal Card (Vale-Refeição and/or Vale Alimentação)
Public Transportation Commuting Benefit (Vale-Transporte)
NuCare – Psychological, Financial and Legal Assistance Program
Life Insurance
Medical Plan
Dental Plan
NuLanguage – Language Course Program
Nucleo - Our learning platform of courses
Extended Parental Leave
Daycare Allowance
Parental Consultancy
Work-from-home Allowance
Gym Partnerships
30 days of paid vacation
Relocation Assistance Package, if applicable