Open to opportunities

Saul Vendrell

@saulvendrell

Message

Senior full-stack engineer specializing in scalable SaaS platforms with Ruby on Rails and React.

United States

Message

What I'm looking for

I seek senior full‑stack roles building scalable SaaS products where I can lead architecture, optimize performance, mentor engineers, and improve delivery via CI/CD and observability.

I am a Senior Software Engineer with 15+ years building scalable SaaS platforms, CRM-style applications, and performant APIs using Ruby on Rails, React.js, and relational databases. I focus on clean, maintainable code, measurable performance improvements, and reliable CI/CD-driven delivery.

At Kiggla and Walmart I led migrations to API-driven architectures, optimized PostgreSQL schemas and queries (cutting response times and report generation significantly), implemented robust test suites, and introduced observability and automated deployments to accelerate releases and reduce incidents.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer

Kiggla

Sep 2018 - Jul 2025 (6 years 10 months)

Designed and maintained full‑stack SaaS CRM applications using Ruby on Rails and React.js, improving query performance by 45% and cutting API response times by 40% while reducing release time by 50%.

Ruby on Rails React PostgreSQL GitHub Actions Docker Datadog Performance Optimization

Software Engineer

Walmart

Feb 2012 - Aug 2018 (6 years 6 months)

Developed and optimized Rails + React analytics dashboards and migrated a monolith to Rails API + React SPA, accelerating report generation up to 70% and reducing production defects by 25%.

Ruby on Rails React PostgreSQL SQL Optimization RSpec API Design Data Modeling Accessibility

Front-End Developer

NerdsToGo

Jun 2005 - Nov 2010 (5 years 5 months)

Built responsive, user‑focused web interfaces and reusable component patterns, reducing load times by 30% and improving UX consistency across CRM and scheduling systems.