Satwikeshwar R.

I help companies stabilize, scale, and production grade backend systems on AWS — typically cutting cloud spend 20–40% while improving reliability and latency. With 15+ years building and operating high-performance backends, I specialize in Node.js and Python systems that handle real production workloads. Clients bring me in when APIs are slow or unstable under load, AWS bills are climbing, architectures are limiting growth, or they need a senior engineer who can take ownership and deliver working results — not just tickets. What I deliver: Production-grade APIs and serverless backends (Lambda + API Gateway) that stay fast and reliable under traffic End-to-end AWS architectures: Lambda, ECS/EKS, API Gateway, DynamoDB, RDS/Aurora, S3, SQS/SNS, EventBridge, Step Functions Monolith → microservices/serverless migrations with clear, maintainable boundaries Cost optimization through right architecture, cold-start reduction, and resource right-sizing Performance bottleneck diagnosis and fixes (latency, throughput, reliability) Infrastructure as Code (CloudFormation/SAM/CDK) and solid CI/CD so systems stay deployable and observable Core expertise: AWS: Lambda, ECS, EKS, API Gateway, DynamoDB, RDS, S3, SQS/SNS, Cognito, CloudWatch Backend: Node.js (Express/NestJS/TypeScript), Python (FastAPI/Flask) Architecture: Serverless, microservices, event-driven systems, system design for scale and cost Common problems I solve: Unstable or incomplete backends that need ownership and production hardening APIs that fail or slow down under load High or growing AWS costs with unclear optimization path Architectures that can’t scale or are painful to maintain Migrations to AWS serverless or containerized environments I’ve delivered reliable, cost-efficient systems for startups and established companies across industries. I work independently, communicate clearly, and focus on verifiable outcomes. If your backend needs to be more reliable, scalable, or cheaper to run — or you need a senior engineer who can own the system end-to-end — let’s talk. I’ll review your current setup and propose a concrete path forward.