Senior Cyber Defense Analyst – Digital Fraud Prevention

Vibra

Cyber Defense Analyst focused on monitoring and responding to digital fraud incidents for a Brazilian company. Collaborating with business and marketing teams to prevent fraud scenarios.

Posted 7/17/2026full-timeRio de Janeiro • 🇧🇷 BrazilSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in managing anti-fraud operations, including incident response and fraud scenario design, while leveraging data analysis and cybersecurity training to optimize fraud prevention strategies.

Highest-signal resume keywords

Fraud PreventionCybersecurityData AnalysisIncident ManagementFinancial Transaction Analysis

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Threat ModelingOperational ReportingRule Engine OptimizationData ScienceData Analytics

Soft Skills

Investigative ApproachAnalytical Thinking

Tools & Technologies

Security Operations Center (SOC)Fraud Monitoring Service

Industry Keywords

E-commerceAccount TakeoverCash-out AttacksFalse PositivesFalse Negatives

About the role

Key responsibilities & impact

Manage the day-to-day operations of the outsourced anti-fraud monitoring service, tracking quality indicators and response times (MTTD, MTTR) and ensuring operational targets are met;
Work closely with Business, Marketing and Product teams to map customer journeys and proactively design new fraud scenarios (Threat Modeling);
Continuously analyze the behavior of anti-fraud rules, investigate false positives and false negatives, and fine-tune rule engines to optimize conversion and block attackers;
Serve on the front line of fraud incident response (e.g., Account Takeover attacks, large-scale cash-out), executing blocks, conducting transactional analyses and immediately containing operational damage;
Maintain an inquisitive, investigative approach, actively searching for anomalies in databases and logs that automated systems or other teams may not have detected;
Produce operational reports on the fraud landscape and vendor performance, escalating complex threats, attack trends and systemic vulnerabilities to leadership.

Requirements

What you’ll need

Bachelor’s degree in Computer Science, Information Systems, Engineering, Statistics, Mathematics or a related STEM/technology field.
Training in Fraud Prevention, Cybersecurity, Data Analysis (Data Science/Analytics) or Incident Management. Hands-on experience in Digital Fraud Prevention operations, SOC (Security Operations Center) or Incident Response.
Strong experience analyzing financial transactions, e-commerce or loyalty programs.

Benefits

Comp & perks

Health and Dental Plan – Bradesco – extendable to dependents
PAE - Financial assistance provided for dependent children and/or stepchildren with intellectual disabilities
Pharmacy partnership – discounts up to 85%
Complementary Pension – FlexPrev Plan, contributions ranging from 1% to 11% depending on salary
Life Insurance – coverage for all employees from the date of hire, with no employee contribution
Extended Leave – Maternity leave (total 180 days) and Paternity leave (total 20 days)
Meal and/or Food Allowance – Caju Benefits
Educational Assistance – for dependents up to high school
TotalPass
Solar Subscription – option to receive a special discount on your energy bill by subscribing to a distributed generation plan
Corporate Smiles Club – discounts up to 50% on travel plans; available to spouse and children 18+
Length-of-service bonus – additional pay based on tenure, paid at the time of vacation
Learning Platform – “Vibra” values track and curated content with over 200 courses available on demand
Internal Recruitment – job openings published across Brazil to encourage internal mobility