# Rahul Singh Shekhawat

> Full-Stack & Cloud Engineer based in Mumbai, India. I design, build, and operate production systems on AWS — serverless architecture, Node.js backends, and AI-powered SaaS — and write detailed engineering write-ups about how those systems actually work.

## Summary

- Full-stack development with Node.js, Fastify, TypeScript, React, and Next.js
- AWS cloud architecture: Lambda, API Gateway, SQS, EC2/ECS Fargate, S3, Route 53, DynamoDB, RDS
- AI systems engineering: LLM integrations, RAG pipelines, agent tracing, and AI observability
- Cloud cost optimization and FinOps tooling (up to 35% AWS spend reduction on real projects)
- Open-source developer tooling, including env-secret-lock (AES-256-GCM secret management CLI)
- Technical writing on serverless patterns, observability, and system design

## Technical focus areas

- [Cloud engineering](https://rahulshekhawat.dev/specialization/cloud-engineer): AWS infrastructure, IaC, reliability, and FinOps cost control
- [AWS & serverless](https://rahulshekhawat.dev/specialization/aws-developer): API Gateway, Lambda, SQS, DynamoDB, and event-driven backends
- [Full-stack engineering](https://rahulshekhawat.dev/specialization/full-stack-developer): Node.js APIs, React/Next.js interfaces, cloud deployment
- [Node.js engineering](https://rahulshekhawat.dev/specialization/node-js-developer): Fastify, distributed workers, and developer tooling
- [AI engineering](https://rahulshekhawat.dev/specialization/ai-engineer): LLM pipelines, agent observability, and telemetry
- [Serverless architecture](https://rahulshekhawat.dev/specialization/serverless-engineer): event-driven design, concurrency, and cost control

## Key pages

- [Home](https://rahulshekhawat.dev/): Overview, experience, projects, and stack
- [Engineering Insights](https://rahulshekhawat.dev/insights): Technical articles and production write-ups
- [RSS feed](https://rahulshekhawat.dev/rss.xml): Feed of all engineering write-ups
- [System Design](https://rahulshekhawat.dev/system-design): Architecture breakdowns and design decisions
- [Testimonials](https://rahulshekhawat.dev/testimonials): Feedback from collaborators and peers

## Selected writing

- [AWS Cloud Migration for Startups](https://rahulshekhawat.dev/insights/aws-cloud-migration-startups-guide): Lift-and-shift vs. re-architecture, with real cost comparisons
- [How We Saved 35% on Cloud Spend](https://rahulshekhawat.dev/insights/subtrackhub-cloud-cost-optimization): Finding idle AWS resources with usage metrics and LLMs
- [Why Your LLM Pipeline is Failing Silently](https://rahulshekhawat.dev/insights/observyze-llm-pipeline-audit): Building trace trees for agent debugging
- [PulseGuard: Real-Time Monitoring and Anomaly Detection](https://rahulshekhawat.dev/insights/pulseguard-realtime-monitoring-anomalies): Monitoring 500+ endpoints at sub-second alert latency

## Open source

- [env-secret-lock](https://github.com/Hrshw/env-secret-lock): Encrypted environment secret management CLI (npm: env-secret-lock)

## External profiles

- [GitHub](https://github.com/Hrshw): Code and open-source projects
- [LinkedIn](https://www.linkedin.com/in/rahul-singh-shekhawat-b4ba481ab): Professional profile

## Contact

- Email: rahulsinghpilani7@gmail.com
- Location: Mumbai, India