Isaias F. Santos

isaias-c
60%Frontend
40%Backend
10+Years of Experience
20+Projects

Full-Stack Developer

Over 10 years of experience as a Software Engineer, delivering large-scale, high-impact projects for digital companies. I’ve built digital acquisition experiences, dashboards, e-commerce platforms, design systems, ERP solutions, CI/CD pipelines, integrations, and payment systems. Below is a sample of the technologies I’ve worked with:

Frontend Technologies:

Next.jsReactTailwindTypeScript

Backend Technologies:

Node.jsExpressNestJSPostgreSQLGraphQL

Integrations:

ContentfulcommercetoolsDoordashStripeBraintreecopilotKitChatGPT

Work Experience

Bold Commerce

Senior Software Development Engineer

May 2025 - current

  • Next.js
  • Commercetools
  • TypeScript
  • React
  • Jest
  • NestJS
  • BigCommerce

Commercetools Developer Expert and Node.js with experience integrating Bold Checkout for seamless payment processing, customizing checkout experiences, writing reliable unit tests, and collaborating with DevOps on deployment strategies and Design System.

Everest Systems

Senior Software Development Engineer

Nov 2022 - May 2025

  • Node
  • TypeScript
  • React
  • AWS
  • Git
  • GraphQL
  • NX
  • NestJS

Led the design and development of complex business rules and scalable cloud-native systems using AWS (Lambda, SQS, EventBridge, Cognito, RDS). Architected and implemented a new ERP system for a multinational startup, building reusable components with React, Node.js, PostgreSQL, and TypeScript, while defining architectural standards and driving performance-focused engineering initiatives.

Software Engineer

Valtech

March 2020 - April 2021

  • Commercetools
  • Contentful
  • Jest
  • Stripe
  • Braintree
  • Azure
  • GCP
  • AWS
  • NestJS
  • React
  • jest
  • Storybook

At Valtech, led full-stack development for PetSmart and ISC2, building MACH-compliant e-commerce platforms with Commercetools, contentful, GraphQL, Node.js, and cloud-native architectures (GCP & Azure). Designed scalable microservices and mentored client teams.

Object Edge

Object Edge

March 2020 - April 2021

  • Commercetools
  • Contentful
  • GraphQL
  • NestJS
  • NextJS
  • React
  • Stripe
  • GCP
  • AWS

Experience with__ Contentful, Commercetools, GraphQL, Node.js, React, Next.js, Gatsby, and GCP__. At Nuts.com, led subscription program (+12% revenue), PHP→Node/Vue migration, MACH adoption, and AWS automation. At Zenni, built microservices, checkout flows, and a product config engine.

Frontend Developer

Happy Biz

    Work with focus on creating mobile and web applications using React, Javascript ,Typescript, React Native and AWS. I was responsible for creating and implementing all UI/UX for web and mobile applications.