Senior Full-Stack Engineer
- Location
- Dominican Republic
- Rate, USD
- $25 / hour
- Work schedule
- Full Time,
- Language skills
- English, Spanish
- Available for Hire
- Yes
About me
I am a Senior Full-Stack Engineer with 7+ years of experience building web, mobile, and AI-powered systems. I have worked across enterprise frontend development, mobile applications, cloud infrastructure, and production AI workflows, with a strong focus on delivering measurable business impact.
I recently designed and shipped a human-in-the-loop LLM review platform using Next.js, Supabase, and AWS Fargate, integrating it with Salesforce and deploying it end-to-end. I also established agentic development workflows using Claude Code, custom MCP server integrations, and reusable agent skills, which helped reduce feature development time by 70%.
My background includes building reusable React microfrontends, improving performance on high-traffic marketing pages, and managing complex state with Redux and Zustand. I have also worked on CMS migrations, AEM component debugging, and large-scale enterprise frontend systems.
In mobile development, I have delivered React Native features from scratch, restored broken applications, and managed full release cycles for iOS and Android. I have handled app store submissions, compliance fixes, authentication flows, subscription systems, and production issue resolution.
I have also contributed to internal and client-facing systems in roles involving staff augmentation, freelance consulting, and full-stack engineering. My work has included React, Node.js, AWS, Firebase, and API-driven workflows for organizations such as Verizon, ORUX, PiTech SRL, and Fideicomiso RDVial.
I am currently pursuing a B.S. in Data Science Engineering at Universidad Abierta para Adultos (UAPA). I also hold certifications in Data Analysis with Python and Developing Back-End Apps with Node.js and Express from IBM/Coursera.
Professional area
Education
- In Progress B.S. in Data Science Engineering @ Universidad Abierta para Adultos (UAPA)
Degree currently in progress. Listed completion date: June 2030.
Experience
- Dec 2022 - Present Senior Software Engineer @ Simpluris | UnifyCX
Designed and shipped a Next.js + Supabase human-in-the-loop LLM review platform for AI-generated legal estimates. Built approval/rejection workflows, Salesforce integration, and automated notifications. Established agentic development workflows using Claude Code and custom MCP server integrations. Developed reusable agent skills and automated LLM pipelines connected to Jira. Built a custom Zendesk app and applied spec-driven development to reduce development time by over 70%.
- Dec 2022 - Dec 2025 Software Engineer @ Newfold Digital (Bluehost, CrazyDomains, Domain.com) | UnifyCX
Architected reusable React microfrontends across multiple hosting brands. Improved page load performance using Lighthouse audits, lazy loading, image optimization, and JavaScript cleanup. Managed state with Redux and Zustand, validated rendering performance, and led AEM component debugging and large-scale CMS migrations.
- May 2023 - Jan 2024 Software Analyst and Consultant · Freelance @ Fideicomiso RDVial
Recovered a non-compiling React Native app for the Dominican Republic national toll system. Migrated to a supported React Native version, replaced broken dependencies, restored build stability, and managed the full iOS and Google Play release cycle. Relaunched the Paso Rapido app for public use.
- Mar 2022 - Dec 2022 Frontend Developer · Staff Augmentation — Client: Verizon @ Newtech SRL
Developed and maintained React + Redux frontend features for an internal Verizon device installation management system. Resolved UI defects across state management, component behavior, and API-driven data flows in an agile sprint workflow.
- Aug 2020 - Mar 2022 Mobile Developer @ ORUX
Owned and delivered the nutrition section of a React Native fitness app from scratch, including meal plans, macro tracking, and personalized recommendations. Refactored workout flow loading behavior, reduced screen load times by over 70%, and resolved production issues involving Firestore, authentication, premium access, subscriptions, and in-app payments.
- Jun 2019 - Jul 2020 Junior Full-Stack Engineer @ PiTech SRL
Built internal web and backend solutions using React and Node.js, with AWS service integrations and EC2 instance management.
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