Senior Financial Analyst – Fraud Prevention, Payment Methods

Grupo Marista

Strategic Financial Analyst at Grupo Marista leading fraud prevention and integration of digital payment methods. Collaborating across teams for financial operations and project management in e-commerce.

Posted 7/16/2026full-timeCuritiba • 🇧🇷 BrazilSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in project management, fraud prevention, and financial operations within e-commerce and fintech environments. Proficient in analyzing performance metrics and managing partner relationships to enhance payment processes and compliance.

Highest-signal resume keywords

Project ManagementFraud PreventionKPI ManagementRisk AnalysisAdvanced Excel

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Financial OperationsChargeback HandlingTransaction Risk ManagementAI/Machine LearningDatabase Query LanguagesAgile MethodologiesPayment Methods KnowledgeE-commerce Systems IntegrationPerformance Indicator DevelopmentAudit Support

Soft Skills

Customer SupportPartner Relationship Management

Tools & Technologies

Power BIBenner ERP

Certifications & Qualifications

CFEProject Management Certification

Industry Keywords

Payment Methods MarketDigital RetailFintechFraud Prevention PlatformsE-commerce

Tech Stack

Tools & technologies

ERPSQL

About the role

Key responsibilities & impact

Project Management: Lead and support end-to-end projects to implement and integrate new payment methods (Pix, digital wallets, new acquirers) into e-commerce, systems and digital platforms.
Fraud Prevention: Monitor daily transactions, perform tuning and configuration of fraud rule engines, and analyze suspicious behavior patterns across digital channels.
KPI Management: Develop and track critical performance indicators such as approval and decline rates and chargeback rates (fraud and commercial dispute).
Partner Relationship: Act as the technical and business interface with payment gateways, acquirers, sub-acquirers and fraud prevention vendors.
Chargeback Handling: Manage dispute and chargeback recovery processes, identifying opportunities to improve the dispute flow.
Support for Reconciliation (B2C): Work with Accounts Receivable to ensure refunds/returns generated by chargebacks are complete and compliant with company policies.
Audit and Accounting Support: Directly support accounting and external/internal audits, and perform calculations for loss provisions and realized losses.
Monthly Close and Executive Reporting: Prepare detailed reports and controls for the monthly financial close, consolidate data and structure results for presentation to coordination and executive leadership.
Customer Support Escalation: Serve as the escalation point for customer service teams, providing prompt support and resolving consumer questions related to declines, refunds and payment processes.

Requirements

What you’ll need

Education: Bachelor’s degree in Business Administration, Accounting, Economics, Engineering or related fields.
Proven Experience: Experience in financial operations for e-commerce, digital retail or fintechs, working directly with payment methods.
Ecosystem Knowledge: Understanding of the payment methods market in Brazil (card schemes, issuers, acquirers and gateways).
Risk Analysis: Hands-on experience in transaction risk management and operation of fraud prevention platforms.
Tools: Advanced Excel for modeling and analyzing large volumes of financial data and Power BI.
AI/ML: Experience using or implementing AI/Machine Learning solutions applied to fraud prevention pipelines.
Differentials: Proficiency with database query languages (SQL).
Agile Experience: Previous experience working with agile methodologies (Scrum/Kanban) in technology and finance squads.
ERP Knowledge: Experience with the Benner ERP.
Additional Qualifications: Postgraduate studies or certifications focused on Fraud Prevention (e.g., CFE), Risk or Project Management.

Benefits

Comp & perks

Unimed Health Plan: With copayment, providing medical coverage and access to a quality accredited network.
OdontoPrev Dental Plan: National coverage with monthly premiums deducted via payroll.
Education Incentive: Support for professional and personal development, including incentives for specializations, extension courses, language study and postgraduate programs at PUCPR.
Meal Allowance: Meal benefit with a monthly copayment deduction.
Quality of Life Program.
Private Pension Plan.
Life Insurance.
Transportation Voucher.
Free Parking.
Wellhub (formerly Gympass): Access to a variety of gyms with payroll deduction for monthly fees.
Zenklub: Access to telehealth mental health sessions with two exempt consultations per month.
"Conte Comigo" Program: Multidisciplinary team available for social support, legal guidance (excluding labor law), financial and pension consulting.
Benefits Club: Partnerships with companies across various sectors offering special discounts on services and products.