AWS Certified Solutions Architect — Associate
Active Amazon Web Services · Issued: April 29, 2026
Skills covered
- Cloud architecture
- Security & IAM
- Scalability
- Cost optimization
- AWS Well-Architected Framework
Mid-Level Full Stack Engineer · Ruby on Rails · React/Next · Node.js · AWS AWS Certified Solutions Architect — Associate Ecuador (EST / UTC-5)
Engineering End-to-End SaaS Products with Serverless Architectures and AI-Accelerated Workflows
Mid-Level Full Stack Engineer specializing in Ruby on Rails and React/Next.js, with strong Node.js (NestJS/Express) and AWS Serverless experience. Building scalable APIs, event-driven systems, and SaaS web apps for the U.S. market. Currently at Senirop, shipping features on TAPinto.net.
How I Work
Principles that drive every line of code I write.
End-to-End Ownership
I own features end-to-end: Rails API schema and service layer through React/Next.js components and CI/CD on AWS. Strict API contracts, custom hooks, scalable component patterns — no handovers, no blockers.
Testing-First
Testing isn't optional. RSpec + Jest at the unit layer, Playwright at the integration layer — every feature ships with the coverage to back it. Refactoring stays cheap; production stays calm.
Core
Ship Fast, Ship Right
Migrated a legacy ERP to Clean Architecture in under 2 weeks — Rails API + React, zero data loss, ~60% less tech debt. AI-accelerated workflow (Claude Code, Cursor) compresses ramp time, never replaces engineering judgment.
Tech Stack
Building scalable applications with type-safe, battle-tested technologies.
Full Stack Core
Rails
React
Next.js
Node.js
NestJS
Go
AWS
Docker
Serverless
PostgreSQL
Git
Agile / Jira
Claude
Experience
My professional journey building scalable applications and working with international clients.
Full Stack Engineer
Senirop (Consultancy)
Current Nov 2024 - Present
React 19 Ruby on Rails TypeScript PostgreSQL
- Architecting a greenfield CRM platform end-to-end in React 19 + Rails API, defining component patterns, custom hooks, and API contracts with the backend team.
- Full-stack contributor on TAPinto.net (Ruby on Rails + React), shipping CMS features across 12+ content types, tuning background jobs, performance hotspots, and cache layers to keep a high-traffic US news platform fast.
- Led a <2 week architectural migration of a legacy Export ERP (Lideser) from monolith to Clean Architecture (React + Rails API), reducing technical debt by ~60%.
- Built an internal AI Code Quality Validator using AST analysis to audit LLM-generated code against Senior Tech Lead standards.
Back End Developer
Development Dynamics (Contract)
Mar 2024 - Aug 2024
NestJS TypeScript Jest Jira
- Designed and implemented 15+ RESTful API endpoints using NestJS + TypeScript, including data models, DTOs, guards, and business logic from scratch.
- Established the testing culture: wrote 50+ Jest unit/integration tests, achieving >85% coverage on critical API paths.
Full Stack Developer
Technical University of Ambato
Dec 2023 - Sep 2024
Next.js NestJS BullMQ PostgreSQL
- Led a 4-person Scrum team building Gendocs V3, a Next.js + NestJS document management system handling thousands of academic documents.
- Implemented event-driven async processing with BullMQ queues, reducing report generation from ~30s to ~9s (70% improvement).
Full Stack Developer
Ambivalence Clothing
Mar 2023 - May 2023
Next.js 14 TypeScript
- Designed and developed a full e-commerce platform using Next.js 14 with TypeScript, implementing product catalog, cart, and checkout flows.
Technical Skills
Technologies and tools I use daily to build high-quality software.
Daily
Backend & Cloud
- Ruby on Rails
- Node.js
- NestJS
- Express
- Golang
- REST APIs
- BullMQ
- PostgreSQL
- MongoDB
- AWS Lambda
- S3
- DynamoDB
- SQS / SNS
- Serverless Framework
Daily
Frontend
- React 18/19
- Next.js
- TypeScript
- JavaScript
- Zustand
- TanStack Query
- TanStack React Router
- TanStack Forms
- React Hook Form
- Zod
- Yup
- Tailwind CSS
- Vite
Daily
AI Power Tools
- Claude Code
- Cursor
- Windsurf
- GitHub Copilot
- MCPs
- Agentic Workflows
- Spec driven development
Testing & DevOps
- Playwright
- Jest
- Docker
- Git
- GitHub Actions
- GitLab CI
- AWS EC2
- AWS ECS
- AWS ECR
Certifications
Validated expertise from industry-recognized programs.
Featured Work
Highlights from my professional career and personal achievements.
TAPinto.net
High-traffic US news platform with full-stack contributions across CMS, jobs, and cache.
Full-stack contributor on a high-traffic US digital news platform serving millions of users. Engineered complex CMS modules for 12+ content types, tuned background jobs, optimized cache layers and performance hotspots, and integrated dynamic ad-serving systems and payment gateways. Operating in an English-first distributed team across US timezones.
Ruby on Rails React PostgreSQL Background Jobs Caching Performance
Lideser Export ERP
Architected a 2-week migration of a legacy ERP to Clean Architecture.
Lead Architect for the critical migration of a legacy Export Management ERP. Transitioned the monolithic system to a modern Clean Architecture (Rails API + React) in a record 2-week timeframe, reducing ~60% technical debt. Designed the PostgreSQL schema migration strategy to ensure zero data loss during the transition.
Clean Architecture Rails API PostgreSQL TypeScript
Confidential
AI Code Quality Validator
Internal tool to evaluate and benchmark LLM code generation quality.
Developed an internal system to audit code generated by AI models. Built automated validation pipelines using AST analysis that process hundreds of code snippets daily, ensuring outputs met rigorous technical standards defined by Senior Tech Leads. Used to benchmark and improve AI-generated code quality across the team.
Node.js AST Analysis TypeScript AI Evaluation
Award-Winning Algorithms
1st Place Algorithm Challenge & 3rd Place Fintech Innovation Contest.
Recognized for exceptional problem-solving skills with a 1st Place finish at a prestigious Algorithm Challenge and 3rd Place at a Fintech Innovation Contest focused on AI Integration. Demonstrated mastery in competitive programming and innovative financial technology solutions.
Algorithms Problem Solving TypeScript
The Archive
Previous projects showcasing my growth as a developer.
GenDocs V3
Event-driven document management system (Next.js + NestJS + BullMQ) for the School of Software Engineering. Cut report generation time from ~30s to ~9s (70% faster) and absorbed >200 documents/month with zero queue backlog by moving heavy Google Docs API work into BullMQ workers.
Web Development Next.js Nest JS
+2
La Jefecita
Full-stack restaurant management platform (Next.js + NestJS + WebSockets) that cut order-error rates by ~30% and reduced kitchen-to-cashier ticket turnaround from minutes to seconds via real-time order sync across waitstaff, kitchen, and cashier roles.
TypeScript Next.js Nest JS
+1
SRI-Compliant Point-of-Sale System
Spring Boot + PostgreSQL POS for small Ecuadorian retailers. Replaced spreadsheet inventory + manual tax reports with a single transactional system that emits SRI-validated XML invoices on every sale — eliminating end-of-month tax-filing scrambles and removing the most common source of inventory drift.
Web Development Next.js Spring Boot
+1
Ambivalence - Ecommerce Cloth Store
Production e-commerce platform (Next.js 14 + Prisma/Postgres) with a custom admin dashboard. Sub-1.5s LCP on product pages, real-time inventory sync that eliminated double-bookings during peak drops, and a checkout flow tuned to reduce cart abandonment.
TypeScript E-commerce Next.js
+2
LookPay — Facial-Recognition Payment Simulation
AI-powered payment simulator (Next.js + Spring Boot + AWS Rekognition) that authenticates transactions via facial verification in <2s end-to-end, removing the need for password or card entry at the point of sale. Built to demonstrate how biometric auth shrinks checkout friction and card-fraud surface area.
TypeScript Artificial Intelligence Payment Systems
+2
Let's Build Something at Scale
Looking for a Full Stack Engineer who owns features end-to-end and builds scalable backend services? Let's talk.