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2 days ago

Senior Software Engineer, Back-end (Fraud)

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI

Last checked: 2 hours agoStatus: Live

Job Summary

Build and evolve real-time fraud decisioning services and APIs, extending the fraud decisioning system into new international markets. Own backend design and delivery, integrate region-specific fraud and risk vendors, and operationalize ML/AI signals for fast, secure decisions. Create and monitor metrics to support availability and on-call readiness, collaborate cross-functionally with Product, ML, Analytics, and Fraud Strategy, and mentor teammates through ambiguity and quality-focused standards.

Location: Poland

Workplace: Remote

Employment Type: Full time

Job Function: Software Engineering

Seniority: Mid level

Key Responsibilities

•Own and deliver quarterly goals, leading engineers through ambiguity and ensuring delivery support.
•Design and implement real-time fraud decisioning services and APIs in Python or Kotlin for markets beyond the US.
•Build and evolve the platform and tooling to launch fraud decisioning in new countries with repeatable, low-friction processes.
•Integrate region-specific fraud and risk vendors and help operationalize ML/AI signals used for real-time decisioning.
•Support system operations and availability via metrics, escalation, on-call/keep-the-lights-on efforts, and set/upgrade code review and design standards.

Pay and Benefits

Salary: PLN 308,000 - 428,000 annually

Equity and Bonus:Equity

Perks:Health InsuranceDentalVisionRemote WorkLearning BudgetParental LeaveEquity

Key Requirements

•5+ years building backend systems at scale using Python or Kotlin.
•Experience with distributed systems and infrastructure using AWS, MySQL/PostgreSQL, and Kubernetes.
•Strong system design skills and a track record of delivering maintainable, extensible services.
•Fluency with AI-driven engineering, including directing and reviewing AI-generated code for correctness, quality, and security.
•Proficiency in SQL and working with data-rich environments, plus familiarity with CI/CD and safe production deployments.

Experience:Fraud preventionRisk systemsReal-time decisioningFintechAI-driven engineering

Skills:CommunicationCollaborationOwnershipMentorshipProblem-solving

Languages:English

Tech Stack:PythonKotlinAWSMySQLPostgreSQLKubernetesSQLCI/CDSnowflakeDbtAirflowChronosphereClaude CodeAI

Company Brief

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Provides point-of-sale lending and buy-now-pay-later (BNPL) solutions for consumers and merchants, enabling installment payments, consumer financing, and embedded financial services through APIs and partnerships with retailers and platforms.

Industry: Lending

Company Size: Enterprise (1,001+ employees)

Revenue: USD 1B+

Growth: Public Company

Valuation: Public Company (Market Cap in USD)

Funding: IPO / Publicly Listed

Headquarters: San Francisco, United States

Founded: 2012

Website LinkedIn

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Affirm

2 days ago

Senior Software Engineer, Back-end (Fraud)

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI

Last checked: 2 hours agoStatus: Live

Job Summary

Location: Poland

Workplace: Remote

Employment Type: Full time

Job Function: Software Engineering

Seniority: Mid level

Key Responsibilities

•Own and deliver quarterly goals, leading engineers through ambiguity and ensuring delivery support.
•Design and implement real-time fraud decisioning services and APIs in Python or Kotlin for markets beyond the US.
•Build and evolve the platform and tooling to launch fraud decisioning in new countries with repeatable, low-friction processes.
•Integrate region-specific fraud and risk vendors and help operationalize ML/AI signals used for real-time decisioning.
•Support system operations and availability via metrics, escalation, on-call/keep-the-lights-on efforts, and set/upgrade code review and design standards.

Pay and Benefits

Salary: PLN 308,000 - 428,000 annually

Equity and Bonus:Equity

Perks:Health InsuranceDentalVisionRemote WorkLearning BudgetParental LeaveEquity

Key Requirements

•5+ years building backend systems at scale using Python or Kotlin.
•Experience with distributed systems and infrastructure using AWS, MySQL/PostgreSQL, and Kubernetes.
•Strong system design skills and a track record of delivering maintainable, extensible services.
•Fluency with AI-driven engineering, including directing and reviewing AI-generated code for correctness, quality, and security.
•Proficiency in SQL and working with data-rich environments, plus familiarity with CI/CD and safe production deployments.

Experience:Fraud preventionRisk systemsReal-time decisioningFintechAI-driven engineering

Skills:CommunicationCollaborationOwnershipMentorshipProblem-solving

Languages:English

Tech Stack:PythonKotlinAWSMySQLPostgreSQLKubernetesSQLCI/CDSnowflakeDbtAirflowChronosphereClaude CodeAI

Company Brief

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Industry: Lending

Company Size: Enterprise (1,001+ employees)

Revenue: USD 1B+

Growth: Public Company

Valuation: Public Company (Market Cap in USD)

Funding: IPO / Publicly Listed

Headquarters: San Francisco, United States

Founded: 2012

Website LinkedIn