Senior Backend Engineer – Fraud Platform & Real-Time Risk

Bvnk Ltd; United States; Hybrid; USD 150,000 - 190,000; Full time

Benefits offered by this job

Flexible working hours

Hybrid/Remote policy

Open and creative environment

Travel to offices around the world

Job summary

BVNK Ltd is seeking a Senior Software Engineer (Backend) to join the Fraud engineering team. You will design and build backend systems that detect and prevent fraud across onboarding, login and payments, using device, behavioural and transaction signals to power real-time risk decisions.

You will collaborate with Fraud Operations, Financial Crime and Data teams in small autonomous squads, focusing on secure, scalable services, low latency and rapid delivery in a fast-moving environment.

Qualifications

• Backend engineer with production systems experience in Java and Spring Boot.
• Experience building microservices and event-driven architectures (Kafka preferred).
• Strong skills in low-latency, high-integrity real-time systems.
• Data-driven mindset with large-scale event and transaction data.
• Experience integrating with third-party APIs and webhooks, with retry and data-quality handling.
• Cloud experience (AWS preferred), containerisation and CI/CD pipelines.
• Secure coding practices for handling sensitive data in regulated environments.
• Ability to own outcomes, communicate clearly, and work in fast-moving squads.
• Interest in applying AI tools and agentic workflows to delivery.

Responsibilities

• Design, build and maintain secure, scalable backend services for fraud detection and risk decisioning.
• Develop real-time risk decisions for onboarding, login, payments and cards.
• Ingest and enrich device, session, behavioural and transaction data with third-party providers.
• Implement risk-based controls and MFA or liveness challenges to reduce fraud.
• Build monitoring, alerting and data pipelines to measure fraud and respond to threats.
• Collaborate with Fraud Operations, Financial Crime, Data and other teams end-to-end.
• Contribute to architecture, code reviews, and mentoring within the team.

Skills

Java

Spring Boot

Distributed systems

Kafka

Real-time systems

Data pipelines

Cloud platforms (AWS)

Security best practices

Ownership & communication

AI-native mindset

Cards and payments knowledge

Digital assets

Job description

BVNK Ltd is seeking a Senior Software Engineer (Backend) to join the Fraud engineering team. You will design and build backend systems that detect and prevent fraud across onboarding, login and payments, using device, behavioural and transaction signals to power real-time risk decisions.

You will collaborate with Fraud Operations, Financial Crime and Data teams in small autonomous squads, focusing on secure, scalable services, low latency and rapid delivery in a fast-moving environment.