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Walman – AWS, React, Typescript, experts in Lemon.io

Walman

From Honduras (UTC-6)flag

Full-stack Web Developer|Middle-to-senior
Mobile Developer|Middle-to-senior

Walman – AWS, React, Typescript

Walman is a mid-to-senior full-stack engineer with over 13 years of experience, specializing in React, Node.js, React Native, and TypeScript. He has led teams and delivered projects across web and mobile platforms, demonstrating strong architectural skills and hands-on work with AWS, Azure, and SQL/NoSQL databases. His communication is clear and structured, with a proven ability to manage client needs and technical trade-offs. Some gaps were noted in JavaScript and React fundamentals, but his leadership and broad engineering background are well established.

15 years of commercial experience
Main technologies
AWS
3.5 years
React
8 years
Typescript
12.5 years
AI-assisted coding
2 years
React Native
5 years
Node.js
8 years
Additional skills
AI agent development
.NET
Kubernetes
Android
Azure DevOps
iOS
CI/CD
Expo
Next.js
Redux
Angular Material
PHP
Jenkins
Terraform
Playwright
Vercel
Nest.js
Python
Direct hire
Possible
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Experience Highlights

Senior Frontend Engineer
Dec 2024 - Ongoing1 year 5 months
Project Overview

Worked as part of a staff augmentation engagement on a large-scale cruise-booking and travel merchandising platform. The focus was on improving the customer-facing web experience through personalization and experimentation features, helping increase conversion and engagement across the booking journey. The front-end architecture was built as a Kubernetes-deployed, Nx-based monorepo, with strong emphasis on scalability, maintainability, and performance observability using enterprise-grade monitoring tools.

Project gallery:
Portfolio example for Royal Caribbean Cruise Lines by Walman, Senior Frontend Engineer
Responsibilities:
  • Built merchandising and personalization features for cruise booking web pages using Adobe Target and Splunk;
  • Implemented DOM manipulation with MutationObservers to keep injected scripts resilient through React re-renders;
  • Developed within an Nx monorepo for shared component libraries and unified tooling across applications;
  • Configured Splunk dashboards and alerting on top of a Kubernetes-based deployment topology;
  • Authored Knowledge Transfer documentation covering Adobe Target activation workflows and Campaign Subgraph deployment.
Project Tech stack:
React
Adobe
Splunk
Kubernetes
NX
Senior Frontend Technical Lead
Dec 2024 - Ongoing1 year 5 months
Project Overview

A cross-platform React Native application shipped to both iOS and Android, spanning secure authentication, native device integrations, automated CI/CD, and full app-store release management.

Responsibilities:
  • Led development of a cross-platform mobile application for iOS and Android;
  • Integrated Azure AD B2C authentication, including ROPC flow handling;
  • Implemented native modules for Google Maps integration, live tracking, geofencing, camera access, file picker, and photo library;
  • Consumed multiple APIs for data ingestion and transactional workflows;
  • Built Azure DevOps pipelines for CI/CD, producing signed .apk, .aab, and .ipa artifacts across testing and production tracks;
  • Configured Apache JMeter-based performance testing harness targeting authentication and core transaction flows;
  • Managed the end-to-end release process across Google Play Store and Apple App Store.
Project Tech stack:
React Native
iOS
Android
Google Maps API
Azure DevOps
CI
CD
Apache JMeter
Founder & Lead Engineer
Dec 2023 - Ongoing2 years 5 months
Project Overview

A fintech mobile application and companion web portal from the ground up, covering multi-environment infrastructure, cross-platform push-notification architecture, and a hybrid native dependency model.

Responsibilities:
  • Architected and built a React Native / Expo mobile application with Azure AD B2C authentication;
  • Developed the CMF.WebPortal companion web portal using Vite, React, and TypeScript;
  • Integrated Firebase Crashlytics and Firebase Performance Monitoring across five environments with isolated Firebase projects per environment;
  • Implemented push notification architecture using Firebase Cloud Messaging for Android and Azure Notification Hubs, bridging APNs for iOS;
  • Managed a hybrid CocoaPods / Swift Package Manager dependency model after assessing packages without SPM support;
  • Built the state, forms, and data layer using Zustand, TanStack Query, React Hook Form, Zod validation, and Axios;
  • Implemented Google Maps integration with per-environment GCP API keys and scoped restrictions.
Project Tech stack:
React Native
Expo
React
Typescript
Node.js
Firebase
Firebase Crashlytics
Firebase Cloud Messaging
Axios
Azure DevOps
Zustand
TanStack
React Hook Form
Zod
Google Maps API
iOS
Lead Front-End Software Engineer
Dec 2020 - Nov 20254 years 10 months
Project Overview

Led front-end development of a pet-insurance quoting and enrollment platform, turning Figma designs into a production Angular application with integrated payments, a custom design system, and automated delivery pipelines.

Responsibilities:
  • Built and maintained a quoting and enrollment Angular application using Angular 17, NgRx, RxJS, and Signals;
  • Converted Figma design mockups into production-ready Angular components;
  • Integrated Stripe payment flows within the Angular quoting funnel;
  • Built a custom design system layered on Bootstrap for cross-product consistency;
  • Led implementation of CI/CD pipelines for Angular applications, reducing deployment errors by 20% and shortening release cycles;
  • Spearheaded development across multiple Angular and legacy MVC applications;
  • Partnered closely with QA to write and execute unit tests in Jasmine and Karma.
Project Tech stack:
Angular
NgRx
.NET
SQL Server
Typescript
Karma
Jasmine
Bootstrap
Azure DevOps

Education

2012
Computer Software Engineering
Bachelor of Science

Languages

Spanish
Advanced
English
Advanced

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