Senior Tech Lead & Hybrid Cloud Architect

Engineering
Scalable
Future.

Building high-performance distributed systems with sub-millisecond latency. I architect event-driven serverless solutions across AWS and Azure, specializing in Go, Python, and multi-tenant platforms. Expert in performance optimization, real-time systems, and pragmatic cloud architecture.

Technical Arsenal

Cloud Architecture

AWS (Lambda, SQS, EventBridge, SNS), Azure (Functions, Cosmos DB, Event Grid, Service Bus, Logic Apps)

Backend Engineering

Go (Golang), Python (FastAPI), NestJS, Node.js, Microservices, gRPC

Modern Web

TypeScript, React, GraphQL (PostGraphile), WebAuthn, Monorepos

Data Strategy

PostgreSQL (RLS, LISTEN/NOTIFY), MongoDB, Cosmos DB, Redis

Event-Driven Systems

Event Grid, Service Bus, SQS, EventBridge, Pub/Sub patterns, Idempotency

Performance & Security

Binary optimization (UPX), Middleware patterns, API Security, Dynamic CORS

Featured Work

High-Performance Communications Gateway

Go-based Azure Function with custom handler pattern. Implements 9-layer middleware stack achieving sub-millisecond overhead. Hybrid cloud architecture using Azure for compute and AWS for delivery.

#Go#Azure Functions#AWS#Middleware

Event-Driven Notification System

Serverless delayed notification architecture using Azure Event Grid, Service Bus scheduled messages, and Logic Apps. Eliminated expensive polling with event-driven design.

#Azure#Event Grid#Service Bus#Logic Apps

Multi-Tenant Chat Platform

Pragmatic multi-tenancy migration with dynamic CORS and request-scoped configuration. MongoDB-based tenant config without Redis overhead. Supports hybrid cloud deployments.

#Node.js#MongoDB#Multi-Tenancy

Distributed Workflow Engine

NestJS-powered workflow engine with versioning support. Dual database strategy: PostgreSQL for relational data, MongoDB for workflow snapshots. RESTful API with Swagger docs.

#NestJS#Prisma#PostgreSQL#MongoDB

Real-time Distributed Locking System

PostgreSQL-based concurrency control with Row Level Security. GraphQL subscriptions for real-time updates. Heartbeat mechanism prevents zombie locks in collaborative apps.

#PostgreSQL#GraphQL#Real-time

Serverless URL Shortener

Sub-50ms response times using Azure Functions and Cosmos DB point reads. Connection reuse and lean payload optimization for extreme performance.

#Azure Functions#Cosmos DB#Python
Rommel Saquicela

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