Kevin Jesus Cabello Valencia

Software Engineer

Backend-focused Software Engineer and Tech Lead with 2+ years building production APIs and full-stack platforms. Currently leading serverless architecture at CoffeeSystems on AWS (CDK, Lambda, AppSync, DynamoDB, GraphQL, multi-tenant). Strong in PHP, Node.js/TypeScript, native mobile (Kotlin, Swift), React, and PostgreSQL (Supabase), with deployments on AWS and GCP.

Apatzingán, Michoacán, México kevinjesuscabellovalencia@gmail.com LinkedIn

Experience

CoffeeSystems

Tech Lead

Apatzingán, Michoacán, México · January 2026 – Present

  • Designed and led a serverless architecture on AWS using CDK (IaC) in TypeScript, orchestrating 40+ Lambda functions (Node.js 24), AppSync (GraphQL), DynamoDB (Single-Table Design with PK/SK + GSIs), Cognito, and S3.
  • Built a modular GraphQL schema covering 18 domains with type-safe resolvers, RBAC via Cognito user groups, and @aws_cognito_user_pools directives with custom pre/post-authentication Lambda triggers.
  • Implemented a multi-tenant isolation model using tenantId-based partition keys, with validation in every resolver and modular plans managed through feature flags.
  • Developed payment webhooks for Stripe and Mercado Pago with automated subscription renewals and secure credential management in AWS Secrets Manager.

CubitNet

Software Engineer

Morelia, Michoacán, Mexico · June 2024 – December 2025

  • Optimized MongoDB queries and data models, achieving 40% faster response times and a 15% reduction in database costs.
  • Designed and developed REST APIs in PHP for internal services, plus a reusable HTML2PDF-based CSS library that standardized document templates and reduced development time.
  • Built the Esmar travel/bus ticketing Android app (Kotlin/Java) and led the iOS port (Swift, VIPER architecture, Alamofire, UIKit), owning the Stripe and OpenPay payment integration, the v1.6 release, and Socket.IO real-time features across both platforms.
  • Maintained the Aliadas Android field-service app (Kotlin/Java, Google Maps, GPS tracking, Socket.IO), focusing on bugfixes and stability improvements.
  • Contributed to two web platforms (React, HTML, CSS, modern JavaScript), delivering features and performance optimizations.
  • Implemented the SaaS license payment and renewal flow with Mercado Pago, plus automated WhatsApp transactional notifications and bulk broadcasting across multiple tenants.
  • Managed Linux server infrastructure, deployments, and L2 production support through debugging and root-cause analysis.

CEO Insurance

Full-Stack Developer (Freelance)

Morelia, Michoacán, Mexico · December 2024 – July 2025

  • Developed two insurance quotation platforms (life and cargo) and their landing pages using vanilla JavaScript, optimized for lead generation and fast quote turnaround.
  • Built dynamic PDF generation for quotes and policy terms (HTML2PDF) with automated email and WhatsApp delivery.
  • Designed a WEB API for quote storage and backend services that convert quotes into active policies, eliminating manual data entry.
  • Deployed on VPS infrastructure with Cloudflare (caching, DNS, SSL) to improve security and performance.

BigPrint Imprenta

Full-Stack Developer

Morelia, Michoacán, Mexico · March 2024 – August 2024

  • Designed the backend architecture applying separation of concerns, scalable patterns, and software engineering best practices.
  • Built, documented, and maintained REST APIs and third-party integrations (e.g., Clientify via webhooks) to automate cross-system workflows and reduce manual operational tasks.
  • Optimized SQL queries and database structures, and developed React frontend modules while maintaining jQuery compatibility.
  • Managed deployments on GCP VPS infrastructure (Linux, Nginx/Apache, security hardening), standardized dev/staging/prod environments, and participated in production incident resolution and scalability decisions.

Skills

Languages

TypeScript JavaScript PHP Python Java Go Swift Kotlin

Frontend

React Next.js Svelte SvelteKit HTML5 CSS3 Tailwind CSS Bootstrap Bulma jQuery

Backend

Node.js Express Fastify Hono PHP Spring Boot REST APIs GraphQL WebSockets

Databases

MongoDB PostgreSQL MariaDB MySQL SQLite DynamoDB

Cloud

AWS (EC2 S3 Cognito AppSync DynamoDB Route53 CloudFormation CDK Amplify) Google Cloud Platform (Compute Engine Cloud Storage) Supabase Firebase Cloud Messaging

Mobile

SwiftUI UIKit Jetpack Compose Android SDK

Architecture

Clean Architecture MVVM VIPER SOLID Dependency Injection

DevOps & Tools

Docker Git Linux Nginx Apache PM2 Cloudflare SSH

Integrations

Stripe Mercado Pago OpenPay

Selected Projects

Pawn Shop Management System

Developed a web platform for managing pawn shop operations, including loan records, pawned item tracking, payment monitoring, expiration handling, and operational reporting. Built with Svelte and Supabase, using managed authentication, database, and cloud storage while prioritizing frontend simplicity and efficient data management.

Svelte Supabase

School Management System for an English Academy

Developed a system for managing students, attendance, groups, capacity limits, teacher schedules, and payroll. Implemented using PHP and MySQL with a traditional server-side rendered architecture, prioritizing simplicity and reliability with minimal JavaScript.

PHP MySQL

Education

Instituto Tecnológico Superior de Apatzingán

B.S. in Computer Systems Engineering

Apatzingán, Michoacán, Mexico

2020 – 2024