Welcome to my GitHub profile! I'm a passionate Financial Services Engineer specializing in high-performance Java microservices, fintech infrastructure, and modern concurrent computing.

• Financial Services Architecture: Building robust payment processing, settlement, and clearing systems
• High-Performance Computing: Leveraging Java 21 Virtual Threads, Generational ZGC, and reactive patterns
• Real-Time Systems: Trading engines, FX pricing, fraud detection
• Enterprise Integration: ISO 20022, ISO 8583, FIX protocol adapters and gateways
• Resilience & Observability: Circuit breakers, distributed tracing, audit logging

• trade-matching-core - High-performance, sharded L3 matching engine with WebSocket push
• fx-core - FX pricing service with currency triangulation and risk-spread calculation
• json-fix-bridge-core - JSON-to-FIX trading gateway with Virtual Threads

• instant-payments-core - Event-driven payment processing engine with Kafka and idempotency
• clearance-core - Financial middleware for the clearing phase
• settlement-core - High-performance settlement engine with net amount calculations
• reconciliation-core - Self-healing payment reconciliation with 100% consistency

• tokenization-vault-core - Format-Preserving Encryption (FPE) for Primary Account Numbers
• vault-core - High-security microservice for sensitive data handling
• aml-core - Anti-Money Laundering transaction monitoring service
• auth-core - JWT-based authentication with Kafka event broadcasting
• Mesh-Core - Financial Service Mesh with Zero-Trust mTLS and PCI-DSS tokenization

• sentinel-core - Real-time fraud detection with Kafka Streams and weight-based scoring

• iso-20022-messaging-core - ISO 20022 messaging with precision validation
• iso8583-adapter-core - Legacy ISO 8583 protocol transformation
• iso8583-iso20022-mapper-core - ISO 8583 to ISO 20022 bridge
• fix-iso20022-mapper-core - FIX to ISO 20022 messaging gateway

• observability-core - Three Pillars observability (Logs, Metrics, Traces)
• resilience-core - Resilience4j-based reliability patterns
• bulkhead-core - Fault isolation with Bulkhead pattern
• idempotency-core - Distributed idempotency with Redis & Lua
• webhook-core - High-performance webhook engine with HMAC signing

• config-core - Centralized configuration engine
• fees-engine-core - High-performance fee calculation
• audit-core - Asynchronous audit logging with Virtual Threads
• notification-core - High-concurrency notification engine
• strangler-fig-core - Legacy modernization patterns

• ledger-core - Immutable SQL Ledger with PostgreSQL 18 & UUID v7

• leetcode-solutions - Algorithmic patterns and data structures in Java

Languages & Runtimes:

• Java 21 (Virtual Threads, Records, Pattern Matching)
• PLpgSQL (PostgreSQL)

Frameworks & Libraries:

• Spring Boot 3.4 & Spring Cloud
• Kafka & Kafka Streams
• Resilience4j
• Netty & QuickFIX/J
• Micrometer, Prometheus, Zipkin

Infrastructure:

• PostgreSQL 18
• Redis (Distributed Caching & Idempotency)
• Docker & Kubernetes
• GitHub Actions (CI/CD)

Security & Compliance:

• JWT Authentication
• HMAC-SHA256 Signing
• Format-Preserving Encryption (FPE)
• PCI-DSS Compliance
• Zero-Trust mTLS

✅ Microservices Architecture - Event-driven, reactive, distributed systems
✅ High-Concurrency Systems - Java 21 Virtual Threads for thousands of concurrent tasks
✅ Financial Domain - Payments, Trading, FX, settlement, clearing
✅ Protocol Integration - ISO 20022, ISO 8583, FIX, SWIFT
✅ Data Consistency - Idempotency, distributed transactions, reconciliation
✅ Observability - Structured logging, distributed tracing, metrics collection
✅ Resilience - Circuit breakers, retries, timeouts, bulkheads
✅ Security - Encryption, tokenization, Zero-Trust architecture

• 💼 Open to discussions on fintech architecture, trading systems, Java performance optimization, and distributed systems
• 🚀 Always exploring emerging patterns in financial technology
• 📬 Feel free to star ⭐ repositories that interest you!

Most projects are open-source. Refer to individual repositories for specific licensing details.

Built with ☕ Java, 🚀 Spring Boot, and 💪 resilience.