Case Studies & Production Track Record
Mission-critical engineering projects across retail banking, investment treasury, supply chain factoring, and payment rails.
BKM SIPER Fraud Detection & Notification Integration
Delivered an end-to-end bidirectional integration with the Turkish Interbank Card Center (BKM) SIPER national fraud platform. Real-time suspicious transfer flags and fraud alerts were integrated seamlessly into core banking pipelines.
Key Architectural Deliverables:
- High-security mutual TLS (mTLS) with proactive certificate lifecycle management
- RabbitMQ-based asynchronous queuing ensuring zero data loss during high load
- Sub-second suspicious account and IBAN verification mechanisms
- Strict compliance with financial regulatory audit mandates
Open Banking (PSD2) Consent & Payment Initiation Engine
Architected and implemented BKM and PSD2-compliant Open Banking Payment Initiation (PISP) and Account Information (AISP) services for Akbank. Built high-throughput event queues for future-dated and recurring payment consent flows.
Key Architectural Deliverables:
- API gateway integration conforming to Turkish Central Bank / BKM specifications
- Kafka and IBM MQ event-driven payment consent orchestration
- OAuth2 customer consent authorization, lifecycle renewal, and revocation workflows
- Over 90% unit test coverage via JUnit and Mockito ensuring flawless production releases
GPU-Accelerated AI Forecasting in Supply Chain Finance
Engineered a machine learning platform for İş Factoring that processes automated XML invoice pipelines and predicts seasonal financing demand. Machine learning training and inference were optimized to run on GPU clusters.
Key Architectural Deliverables:
- Achieved ~50x faster prediction performance compared to CPU-based execution
- Multivariate financial modeling using TensorFlow, XGBoost, and StatsModels
- Seamless bi-directional integration with İş Bankası core banking and factoring pipelines
- Provided technical leadership and code quality governance for a 4-engineer delivery team
Greenfield Core Treasury & Derivatives Platform
Engineered a modern microservices-based treasury management system from scratch for the Development and Investment Bank of Turkey (TKYB). Implemented accounting, settlement, and end-of-day processes for Spot, Swap, Forward, and Repo instruments.
Key Architectural Deliverables:
- Direct institutional integrations with Reuters and Barclays treasury systems
- Real-time position monitoring, automated limits, and credit check validation
- Automated end-of-day (EoD) accounting ledger reconciliation engine
- High-availability distributed microservice deployment on Kubernetes
Cross-Border & National Payment Gateways (SWIFT, FAST, EFT)
Implemented SWIFT MT103 and MT202 financial messaging pipelines alongside 24/7 instant payment (FAST) and EFT gateways at ColendiBank.
Key Architectural Deliverables:
- ISO and SWIFT financial message parsing and semantic validation engine
- 24/7 uninterrupted FAST instant transfer orchestration
- mTLS and HSM-backed digital certificate security
- Automatic error reversals and end-of-day reconciliation guarantees