PHP Developer (SEON / Anti-Fraud)

Stack

Responsibilities

• ▹Work with SEON as a product, not just at the API level
• ▹Design and implement fraud detection and prevention flows
• ▹Work with risk signals, rules, scoring, and decision-making logic
• ▹Build and maintain anti-fraud orchestration within complex systems
• ▹Make independent technical decisions on how and where to integrate SEON checks
• ▹Understand the difference between simple provider integration and building a full fraud-control layer

Requirements

• ▹4+ years of commercial experience with PHP
• ▹Solid hands-on experience integrating SEON into production systems
• ▹Experience building antifraud, risk, and security-related flows
• ▹Strong understanding of REST APIs and webhooks, asynchronous processing, queues and event-driven architecture, transactional consistency, retry/timeout/fallback patterns, idempotency, observability
• ▹Experience with Symfony or another modern PHP framework
• ▹Good knowledge of SQL and transactional systems
• ▹Ability to work with external provider documentation and turn it into production-ready solutions
• ▹Ability to work independently in environments with incomplete requirements and complex domain logic
• ▹Integration of SEON API into critical business flows
• ▹Experience with transaction screening, device intelligence, and email/phone/IP enrichment
• ▹Building logic based on SEON rules, scoring, and signals
• ▹Working with manual review and case management flows
• ▹Experience integrating SEON in fintech, payments, or high-risk environments
• ▹Ability to reduce false positives and false negatives through proper system design

Nice to have

• ▹Experience in fintech, payments, acquiring, wallets, or payouts
• ▹Experience integrating KYC / AML providers
• ▹Experience building risk engines or orchestration layers
• ▹Experience with microservices architecture
• ▹Knowledge of DDD, CQRS, and event-driven architecture
• ▹Experience with RabbitMQ, Kafka, or SQS
• ▹Understanding of authentication, identity, trusted devices, and SCA / step-up verification

Soft skills

About the company

WhiteTech empowers businesses in the financial ecosystem with white-label and SaaS solutions for EMI, PSP, e-commerce, and open banking platforms. It is a remote-first company welcoming applicants across Europe.