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Achievement: Arctic Code Vault ContributorAchievement: Pull Shark

Achievements

Achievement: Arctic Code Vault ContributorAchievement: Pull Shark

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jmonterroso/README.md

Jayson Monterroso

Frontend-focused full-stack engineer

I build scalable product experiences, commerce systems, and AI-assisted engineering workflows.

Website · Experience · LinkedIn · Blog · Email

15+ years of experience · React / TypeScript / Node.js · Costa Rica

🟢 Open to opportunities

About

I'm a software engineer with 15+ years of experience turning complex product requirements into accessible, high-performing software. My work is frontend-led and full-stack in practice: from design systems and React platforms to payment infrastructure, event-driven services, and cloud delivery.

I enjoy mentoring engineers, shaping architecture, and using AI coding agents as practical collaborators for scoped implementation, testing, documentation, and code review—with human judgment kept firmly in the loop.

Currently

Senior Software Engineer · Under Armour via Intevity
2025 — Present

  • Replacing MuleSoft integrations with scalable Node.js microservices, bringing core loyalty APIs in-house.
  • Building event-driven commerce architecture with AWS SQS/SNS across POS, OMS, Salesforce, and ecommerce systems.
  • Delivering customer-facing features across a Next.js/React storefront and GraphQL APIs.
  • Applying enterprise-approved GitHub Copilot agentic workflows to accelerate implementation, automated testing, and documentation.

Selected impact
Notch · Software Engineer III Architected AP/AR and payment systems with OCR workflows processing thousands of invoices monthly; led a shared UI library and web/mobile delivery.
StackHawk · Frontend Engineer Helped take a security product from early stage to production and nearly $1M ARR; coached a team of five frontend engineers.
Gorilla Logic · Software Developer Led ecommerce and marketing platform work; improved a storefront's load time from 10s to 2s and built accessible global UI systems.

View my complete experience →

Toolkit

Daily stack
React · Next.js · TypeScript · Node.js · GraphQL · AWS · Jest · GitHub Copilot

More technologies

Frontend
React · Next.js · Gatsby · TypeScript · JavaScript · React Query · Zustand · Zod · Redux · Storybook · Styled Components · Tailwind CSS · Angular · AngularJS · Backbone.js · Three.js · jQuery · HTML · CSS · SCSS · BEM

Backend & data
Node.js · NestJS · Express · Prisma · GraphQL · PostgreSQL · MongoDB · MySQL · MS SQL Server · Salesforce Commerce Cloud · Go · Python · PHP · Java · C#

Cloud & delivery
AWS · SQS · SNS · GCP · Cloud Tasks · Kubernetes · Docker · Terraform · Flux CD · Netlify · Vercel · Vite · Webpack · Babel

Testing & quality
Jest · React Testing Library · Cypress · Enzyme · accessibility · performance · design systems

Mobile & content
React Native · Capacitor · Ionic · NativeScript · Sencha Touch · Contentful · Jekyll · WordPress · Joomla · ExpressionEngine · Razuna

AI-assisted engineering
GitHub Copilot · AI coding agents · agentic implementation workflows · AI-assisted testing and documentation

Earlier ecosystem
CoffeeScript · Ruby · Compass · Neat · Salesforce · SendGrid

Beyond code

Husband, father, mentor, and lifelong learner. When I'm away from a screen, you'll usually find me hiking, exploring Costa Rica, or near the ocean.

Popular repositories Loading

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    jmonterroso package

    1

  2. example-node-server example-node-server Public

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    IOS application to create a list of Restaurants and Custom Actions using Swift 4

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  4. ISW-811 ISW-811 Public

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    Gluu Front End

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