Core Banking Integration Platform
Event-driven integration layer between legacy core banking systems, FLEXCUBE SOAP APIs, and modern REST services.
Spring BootKafkaPostgreSQLFLEXCUBEDocker
Designed for reliability • production workloads
Backend-first Software Developer
I design and shipresilient backend systems
I build banking-grade integrations, real-time workflows, and high-uptime services with clear architecture, strong observability, and pragmatic automation.
APIs & integrations
Workflows & automation
Observability & reliability
About
I'm a Software Developer , focused on backend systems where reliability actually matters. I design integration-heavy platforms, clean APIs, and workflows that keep banking operations moving.
On a daily basis, I work across Spring Boot, Node.js, TypeScript, PostgreSQL, messaging, and observability stacks. I like predictable deployments, noisy logs during development, and quiet dashboards in production.
Focus
APIs, integrations, workflows, and observability for financial systems.
Mindset
Strong foundations, clean interfaces, clear failure modes, and practical automation.
Currently
Building and maintaining banking integrations and real-time workflows in production.
Stack
The tools I reach for when building production systems.
I care less about hype and more about tools that are observable, debuggable, and battle-tested.
Java / Spring Boot
Node.js / TypeScript
PostgreSQL / Redis
Kafka / Messaging
REST / SOAP / gRPC
Docker / Linux
Clean Architecture
Testing & Observability
Selected work
Systems I've helped design and build.
Most of my work lives in private repos and internal systems, but this is a snapshot of the type of problems I like solving.
Workflow Engine for Loan Origination
Configurable workflow engine that orchestrates KYC, scoring, approvals, and disbursement across multiple services.
Node.jsTypeScriptRedisREST APIsClean Architecture
Designed for reliability • production workloads
Observability & Audit Layer
Centralized logging, structured auditing, and traceability for financial operations with strict compliance needs.
ELKOpenTelemetryGrafanaAlerting
Designed for reliability • production workloads
Let's build something reliable.
I'm open to backend roles, system design work, and technical collaborations around integrations, workflows, and observability-heavy systems.
rahul.painuly.dev@outlook.com
Prefer async: send a short context and I'll get back with concrete next steps.