Roshan Kakarla

Software Engineer — Backend • Full-Stack • Cloud

I build scalable APIs, event-driven services, and elegant UIs. 4 years across fintech, insurance, and SaaS.

United States
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Quick Snapshot
  • 4 years building production systems
  • Backend focus (Java, Python), React, AWS
  • Fraud, claims, analytics platforms

Experience

American Express

Feb 2023 – Dec 2024

Software Engineer

Enterprise Fraud Detection & Risk Analytics Platform

  • Designed fraud APIs with Spring Boot & FastAPI
  • Kafka pipelines for real-time scoring & anomalies
  • Built React dashboards for risk analytics
  • Optimized PostgreSQL & caching → ~40% faster APIs
  • AWS Lambda/EC2/RDS for scalable infra
  • CI/CD with GitHub Actions & Docker
  • OAuth2/JWT for secure auth; Agile sprints

State Farm Insurance

Jan 2022 – Dec 2022

Software Engineer

Claims Automation & Policy Management System

  • REST microservices in Spring Boot
  • React modules for claim status & agent dashboards
  • Python ETL — improved data accuracy ~30%
  • Legacy APIs migrated to AWS (EC2, API Gateway)
  • PostgreSQL views & procs for reporting
  • JUnit/PyTest — 90%+ coverage; CloudWatch monitoring

Cosmicvent Software

Dec 2020 – Dec 2021

Software Engineer

Healthcare Data Visualization & Dashboard Platform

  • Interactive React dashboards + REST APIs
  • Backends in Flask & Spring Boot for ingestion
  • PostgreSQL schema + indexing for speed
  • S3 for secure storage; Python jobs + CRON
  • Analytics reduced manual reporting by ~45%

Projects

FAITH CHURCH APP

Community events, live sermon streaming, and donations platform using React.js, Firebase, and Flask.

React.jsFirebaseFlaskCloud Functions
Repo

SELF CHECK-IN SYSTEM

Automated check-in and payment system with QR validation and secure payments.

FastAPIReact.jsStripePostgreSQLAWS
Repo

PARKING LOT SLOT RESERVATION

Slot booking with live availability and RBAC for admins/users.

Node.jsExpressReact.jsMySQLJWT
Repo

Tech Stack

Programming Languages

JavaPythonJavaScriptTypeScriptSQL

Frameworks

Spring BootFastAPIFlaskReact.js

Cloud & Infra

AWS (Lambda, EC2, RDS, S3)Docker

Data

PostgreSQLMySQLKafka

Testing & CI/CD

JUnitPyTestGitHub Actions

Methodologies

Agile/ScrumTDDCI/CD

Selected Impact

API speed-ups

~40% faster responses via SQL tuning & caching.

Data quality

~30% accuracy improvement via ETL hardening.

Ops impact

45% less manual reporting with automated analytics.