Fintech & core banking integration

Georgi Logodazhki

I design and build the integration layer between modern platforms and core banking systems: event-driven, microservice-based, and built to survive timeouts, retries and messy legacy interfaces. 8+ years across fintech consulting and delivery.

Work in progress · new sections coming soon

Try the integration demo See experience

What I work with

Languages & frameworks

JavaSpring BootTypeScriptNext.js

Integration & APIs

MuleSoftApache CamelRESTSOAPDataSonnet

Core banking platforms

FIS IBSFiserv Premier / Precision / PorticoCorelation KeystoneSymitar SymXchangeFiserv Communicator Open

Messaging & streaming

KafkaAWS SNS/SQS

Cloud & infrastructure

AWS LambdaKubernetesDockerPostgreSQL on AWS

Architecture

Event-drivenMicroservicesDistributed systemsData transformation pipelines

Full-stack, end to end

The reference architecture behind this portfolio and the demo.

Frontend	Next.js (App Router), TypeScript	Static export, served from S3 + CloudFront
Backend	Java, Spring Boot	Tenant-aware API, per-tenant data source routing
Data	PostgreSQL on AWS	Control database plus one database per tenant
Connectors	AWS Lambda, SQS/SNS	Adapters to core banking interfaces, retry and DLQ
Identity	Keycloak	Realm per environment, tenant claim in the token

Read the tenant isolation design decision →