Cloud, Web, Mobile, Geo

Full-stack engineer specializing in geographic information systems, cloud architecture, and mobile development. Building spatial solutions that map the future.

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Bethesda, Maryland +1 (949) 339-7873 nico@nicolasroldos.com LinkedIn AWS Skills Coffee
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Professional Journey

Work Experience

May 2024 – Present
7x24 Exchange SoCal
Aliso Viejo, CA (Remote)
Non-Profit

Director of Digital Services

  • Director of Digital Services & Digital Marketing for 7x24 Exchange Southern California chapter board of directors
  • Update and modernize website to increase visibility for members and potential sponsorships
  • Tune SEO to ensure events are easily visible to target audience
  • Leadership in all aspects of web marketing technologies for the chapter
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Jul 2024 – Jun 2025
Naked Development
Irvine, CA (Remote)

iOS Engineer, Freelance Contract Lead Developer

  • Re-built and migrated iOS push notification and geolocation marketing app "Pushyy" in Swift and SwiftUI from React Native
  • Created new user flows, location-services components, map-view components, and detail-view components as lead developer
  • Designed and built coupon/deals/sale-items components for business management interface
  • Maintained code using Git flow with CI/CD practices and deployed prototypes on TestFlight
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Oct 2018 – Jul 2024
Esri Inc.
Redlands, CA (Remote)

Product Engineer II

  • Automation, algorithms, tiling schemes, publishing, deployment and dev-ops for back-end raster web map tile services (WMTS)
  • Built secured Wayback app for government client using React, Redux, TypeScript with imagery API on AWS
  • Deployed satellite imagery API & assets stored on AWS S3, processed via Amazon EC2 instances
  • Satellite imagery metadata server instantiation on Amazon AWS infrastructure using Bash and Python scripts
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Jan 2018 – Dec 2019
UC Irvine / 2U Education
Irvine, CA

Teaching Assistant, Substitute Instructor – UI/UX Design

  • Led classroom discussions, lectures, presentations, and constructive critiques of design
  • Taught core concepts of UI/UX design, HTML, CSS, and basic JavaScript library implementation
  • Presented deep-dive workshops on Git flow, Github, terminal commands, and file management
  • Translated UI/UX graphics from Sketch and Adobe XD into front-end code
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Dec 2017 – Dec 2019
Taylor Digital
San Clemente, CA

Web Developer, Mobile App Developer

  • Developed cross-platform prototype for Location Based Marketing application "Valevo"
  • Tested and deployed alpha and beta builds via TestFlight using CI/CD in a team environment
  • Built and shipped cross-platform app using Ionic, Angular TypeScript, Cordova, and Google Material Design
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Jan 2017 – Dec 2017
Apollo Mapping
Boulder, CO (Remote)

Web Developer, DevOps Freelance Contract Engineer

  • Core product maintenance and development on Satellite Imagery Search Engine "Image Hunter"
  • Technology Stack: Angular TypeScript, Google Material Design, Python Flask, PostgreSQL with PostGIS
  • AWS S3, RDS, EC2, API Gateway and IAM role management for Staging and Production
  • Implemented Python Imaging Library (PIL) to correct or discard occluded satellite imagery raster tiles
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Jul 2016 – Jan 2017
UrSpot
Denver, CO

iOS Mobile Application Developer

  • Led weekly conference calls and co-working sessions at Galvanize Inc. with project lead
  • Demonstrated capabilities of iOS CoreLocation, MapKit, and RegionMonitoring in app prototype
  • Created wire-frames and animations; developed prototype using Xcode, Swift, and Public Parking APIs
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Oct 2014 – Feb 2015
Psomas Engineering
Irvine, CA

GIS Specialist, Department of Environmental Resources

  • Designed and produced digital cartographic products and environmental impact graphics using ArcGIS 10+
  • Implemented geographic location-enabled data collection for biologists, environmental scientists, and archaeologists
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Apr 2012 – May 2013
TRC Solutions
Lanham, MD

Distribution Systems Analyst

  • Data collection and geo-referencing for Pepco utility critical electrical distribution system locations in Washington D.C. & Maryland
  • Produced cartographic and analytic products deployed to utility provider's private cloud
  • Assessment of critical electrical utilities for the SAIFI regional systems project
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Technical Expertise

Skills & Technologies

Front End

SwiftUI React React Native Angular TypeScript Flutter Ionic TailwindCSS HTML5/CSS3 Material Design

Back End & Cloud

Node.js Express Python Flask Ruby on Rails PostgreSQL MongoDB AWS Lambda AWS EC2 AWS S3 AWS DynamoDB

GIS & Mapping

ArcGIS Pro ArcGIS Online ArcGIS JS API PostGIS LeafletJS MapBox GDAL Google Earth

iOS Development

Swift SwiftUI UIKit CoreLocation MapKit CoreData TestFlight Xcode

DevOps & Tools

Git/GitHub CI/CD Docker JIRA Confluence Postman Linux Admin Bash

Languages

English (Native) Spanish (Native/Fluent)
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Academic Background

Education

Master of Science in GIS
University of Redlands
Graduated August 2014 · Redlands, California
Bachelor of Science in Geography
University of Maryland
Graduated December 2011 · College Park, Maryland
Full Stack Web Development
Galvanize Inc.
Completed July 2017 · Boulder, Colorado
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Academic Research

Published Work

The Arsenic Threat: Inter-dependencies of Water, Agriculture, Food Supply, Public Health and Energy Critical Infrastructure

Journal of Health and Technology · Springer-Verlag Berlin Heidelberg
Center for Hemispheric Defense Studies, National Defense University · Washington D.C.

Research conducted under Professor Luis Kun (PhD) investigating threats to the United States water safety as a byproduct of unregulated drilling practices. Responsibilities included geographic data collection on arsenic and dangerous contaminants, creation and configuration of GIS databases using Esri's ArcMap RDBMS and ArcCatalog, and production of infographics and cartographic exhibits demonstrating contaminant locations in relation to hydraulic fracture mining sites.

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Let's Build Something Together

Whether you need cloud architecture, mobile development, or GIS solutions, I'm ready to help bring your vision to life.

nico@nicolasroldos.com →
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+1 (949) 339-7873 →
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