Daniel Vásquez

Senior Backend & Platform Engineer

Professional Summary

Backend and platform engineer with 5 years of experience architecting, building, and scaling full-stack systems. Specialized in modern React/Next.js frontends and robust NestJS backends with deep expertise in Kubernetes, AWS, GitOps, and developer platform design.

Recently led backend and infrastructure development for a high-volume event system, including POS, ticketing, and centralized identity platforms. Skilled in performance profiling, cost-optimized infra, Terraform automation, and GitHub-based CI/CD. AWS Solutions Architect Associate certified.

Core Skills

Frontend

React
Next.js
SSR
Middleware
Caching
Profiling
Tailwind CSS
TanStack Query
Storybook

Backend

NestJS
Node.js
Raw SQL
GraphQL
Prisma
Sequelize
Auth/AuthZ
Microservices
REST APIs

DevOps & Platform

GitHub Actions
CI/CD
Kubernetes
ArgoCD
GitOps
Prometheus
Grafana
Loki
Tempo
CRD Generation

Cloud & Infrastructure

AWS
EC2
RDS
S3
IAM
VPC
ECR
Terraform
IaC
Cost Optimization

Other

Turborepo
Bazel
System Design
Performance Optimization
Legacy Refactors
Professional Experience

Senior Backend & Platform Engineer

Nov 2024 – Present
Underpass – Remote
  • • Designed and implemented backend infrastructure for ticketing and POS systems used in live events, including identity management and reporting systems
  • • Replaced legacy stock model with transactional StockMovement system, improving data integrity and traceability
  • • Built internal developer platform with automatic CRD scaffolding and GitHub-integrated CI/CD pipelines
  • • Deployed GitOps-driven Kubernetes clusters using ArgoCD, Terraform, and AWS with full observability stack
  • • Scaled POS system to support 15,000+ users in the last 3 months
NestJS
Node.js
Prisma
PostgreSQL
GitHub Actions
Kubernetes
ArgoCD
Terraform
AWS

Senior Software Engineer

May 2024 – May 2025
EPAM Systems (Confidential Client) – Remote
  • • Built a new application module from scratch, including design and implementation of 21+ GraphQL endpoints using NestJS and raw SQL
  • • Refactored legacy backend codebases for maintainability and performance
  • • Reduced DB calls by identifying and eliminating redundant queries
  • • Optimized GraphQL queries, improving performance (30s → 10s), and shaved ~2.5s/request by removing obsolete dependencies
NestJS
Node.js
Raw SQL
GraphQL
GitHub Actions

Senior Software Engineer

Oct 2021 – May 2024
EPAM Systems (Contractor to Uber) – Remote
  • • Developed and maintained backend services for Uber's financial tools using Golang, Node.js, and GraphQL
  • • Contributed frontend features using React and TypeScript
  • • Collaborated with cross-functional teams to ship reliable and scalable features
  • • Maintained CI/CD pipelines and conducted thorough code reviews and testing (Jest, Cypress)
Golang
Node.js
GraphQL
React
TypeScript
Jest
Cypress

Frontend Engineer

July 2020 – Oct 2021
Various Roles (Codeless, Soluntech, GPS Control)
  • • Built frontend features for SaaS and eCommerce platforms using React, Angular, and GraphQL
  • • Introduced DevOps practices (CI/CD via GitHub Actions), deployed apps on AWS
  • • Participated in full project cycles: planning, dev, QA, and delivery
React
Angular
GraphQL
GitHub Actions
AWS
Certifications

AWS Certified Solutions Architect – Associate

Certified in 2023