RareBro Engineering Blog
Technical research, architectural deep dives, and scaling guides written by our core developer team.
Legacy Modernization to Cloud Framework
A five-stage framework for moving legacy insurance and healthcare systems to cloud-native platforms without disrupting claims, policies or compliance.
DEVENDER SARAMPELLY August 14, 2026Platform Modernization: Legacy to AWS and Guidewire Architecture
An architecture framework for migrating legacy insurance platforms to Guidewire on AWS, covering integration layers, data migration and cost control.
DEVENDER SARAMPELLY August 14, 2026Optimizing Retrieval-Augmented Generation (RAG) Embeddings for FinTech
A technical deep dive on structural pre-processing, metadata filters, and evaluation algorithms to prevent hallucinations in finance agents.
Scaling Serverless Workloads with AWS ECS Fargate & WAF
Step-by-step configurations for VPC subnets, Application Load Balancers, zero-trust IAM roles, and auto-scaling rules.
Hardening FastAPI Apps: Authentication, Rate Limiting & Auditing
Implement JWT token validation, SlowAPI rate-limiting handlers, secure hashing, and SQLAlchemy-backed audit log tracking.