Deconstructed and migrated a 16-year legacy PHP monolith (zero documentation) to serverless Python/AWS via reverse engineering—transforming core order lifecycle with zero business interruption.
Software Engineer & Solutions Architect
Hi, I'm Esteban
Senior Back End Developer with 6+ years building scalable systems using Node.js, NestJS, Python, React, and Next.js on AWS serverless. Expert in cloud architecture (Lambda, API Gateway, Cognito, SQS/SNS), enterprise integrations, and zero-downtime legacy system migrations.
Main focus
- Serverless architectures & autoscaling
- Security, observability, and performance
- Infrastructure as Code & CI/CD
Certifications
See my certifications on Credly or check my full profile.
Key Achievements
A couple of transformations that changed how teams ship and scale.
Led infrastructure-wide migrations with zero downtime: Kong → AWS API Gateway, Keycloak → AWS Cognito across 10+ teams, delivering improved stability, security, and cost reduction.
Tech Stack
My toolset to build, secure, and operate production-ready applications.
AWS Platform
AWS Lambda ✔
Amazon API Gateway ✔
Amazon Cognito ✔
Amazon SQS ✔
Amazon SNS ✔
Amazon EventBridge ✔
AWS Step Functions ✔
Amazon DynamoDB ✔
Amazon RDS ✔
Amazon Aurora ✔
Amazon Athena ✔
AWS Lake Formation ✔
AWS Glue ✔
Amazon S3 ✔
Amazon CloudFront ✔
Amazon EKS ✔
Amazon ECS ✔
Amazon ECR ✔
AWS Secrets Manager ✔
AWS CloudFormation ✔
AWS SAM ✔
AWS CDK ✔
AWS CodeDeploy ✔
Amazon Kinesis ✔
Amazon Route 53 ✔
AWS Certificate Manager (ACM) ✔
Amazon VPC ✔
NAT Gateway ✔
Amazon CloudWatch ✔
AWS IAM ✔
AWS Transit Gateway ✔
Backend
Node.js ✔
TypeScript ✔
NestJS ✔
Python ✔
Data
PostgreSQL ✔
MySQL ✔
MongoDB ✔
Redis ✔
Frontend
React ✔
Next.js ✔
Astro ✔
DevOps
Docker ✔
GitHub Actions ✔
Bitbucket Pipelines ✔
Kubernetes ✔
Contact
Let’s talk! Email me at eprincipevent@gmail.com, visit my GitHub, or connect on LinkedIn.