Courtney Yatteau

If you'll be at the Esri Dev & Tech Summit, join Nate and me for a beginner-friendly Git + GitHub collaboration walkthrough. 👩🏻‍💻

📍Friday, March 13 | 8:30 AM | Mesquite C
registration.esri.com/flow/esri/26...

#EsriDevTech2026 #ArcGIS #Esri #GitHub

SpeedGeeking is in 1 week at Esri Dev & Tech Summit 😄 Come geek out about GIS things with me!

Tues, Mar 10 • 5-6pm • Renaissance Palm Springs (San Jacinto + Santa Rosa)

#ArcGIS #GIS #Esri

CascadiaJS web + AI conf. Speaker. Courtney Yatteau. ESRI. June 1-2, 2026. Seattle, WA.

UI feeling 😵‍💫? Your main thread is doing leg day. 🏋️‍♂️

@cyatteau.bsky.social will teach you how to spot blocking work, move heavy filtering + aggregation into Web Workers, and add clean messaging, debouncing, progress & cancelation.

Smooth UI. Happy users. 🚀✨

cascadiajs.com/2026/talks/k...

Maptails tee + mappy glass, ready to celebrate World Bartender Day at home 🍸🗺️

#GIS #mapping

ALP Basemap Sessions Demo ...

Demo 👇 MapLibre + ArcGIS basemap session + style switcher + 12-hour timer:
codepen.io/cyatteau/pen...

It's National Tile Day! 🧱🗺️ I made a literal plate of map tiles to celebrate.

ArcGIS basemap sessions: unlimited tiles for up to 12 hours.

#ArcGIS #JavaScript #GIS

2026 2026 Esri Partner Conference and Developer & Technology Summit | Esri Join us for the 2026 Esri Partner Conference and Developer & Technology Summit.

SpeedGeeking details:
registration.esri.com/flow/esri/26...

Room map:
webapps-cdn.esri.com/CDN/devtechs...

Hey Esri Dev & Tech Summit attendees: a wild dev tip appeared! ⚡️

Join us for SpeedGeeking at Esri Dev & Tech Summit: rotate fast, catch quick wins.

See you on Tuesday at 5 PM!

#ArcGIS #Esri #GIS

Basemap style: www.arcgis.com/home/item.ht...

Chocolate Mint Day, so I styled a chocolate-mint basemap to match my Andes 😄🍫🌿

Made in the ArcGIS Vector Tile Style Editor (VTSE) in minutes.
Link to the basemap in the first reply.

Chocolate mint: elite combo or toothpaste vibes?

#ArcGIS #WebDev #GIS

YouTube video by FreeSWITCH ClueCon Weekly with Courtney Yatteau [Sn. 15 Ep. 23]: Making Math Click with Web Animations

Podcast drop: I joined ClueCon Weekly to talk "Math in Motion" and animating math with sliders + canvas.

What would you animate?

www.youtube.com/watch?v=bN1R...

#JavaScript #WebDev #DataViz

Joined the caricature trend ✅

Former teacher turned Dev Advocate, still educating… just with maps and code now 😄🗺️

Exactly! 🤗

Love when the calendar does math. 🧮

#math #calendar

Day.js is a great shortcut for timestamp UX.

calendar() gives human labels like "Today" and "Tomorrow", and tz() handles real time zones (built on the UTC plugin).

#JavaScript #OpenSource #WebDev

Happy Internet Friends Day 🫶

Shoutout to everyone who makes tech education feel welcoming. You make the internet better.

Developer Summit at Esri FedGIS wrapped yesterday. My colleagues and I shared demos highlighting the latest enhancements across ArcGIS developer technology.

Missed it? Feel free to message me, I'm happy to share some demos.

#FedGIS2026 #Esri #ArcGIS

Day 1 of Esri FedGIS done ✅ I'd love to see you at the Developer Summit at FedGIS tomorrow at 1 PM.

#FedGIS2026 #Esri #ArcGIS

I got to nerd out about math today on a podcast! 🤓

We chatted about math + web dev, learning through visuals, and why curiosity never stops. Episode comes out in a couple weeks.

Have you ever had a "wait… THAT'S what it means?!" math moment? If so, I'd love to hear it!

#WebDev #STEM #JS #Math

Guided UI walkthroughs in a few lines of JS. Bonus guided map builder app 🗺️

#OpenSource #JavaScript #WebDev #UI

One week until the Developer Summit General Session at Esri FedGIS 👩🏻‍💻🗺️

Join us in Ballroom A on Feb 11, then stay for technical sessions. My colleagues and I will be sharing live demos and would love to meet everyone!

See the event map: webapps-cdn.esri.com/CDN/fedgis-e...

#FedGIS2026 #Esri #GIS

SortableJS drag and drop for FOSSFeb Day 2. Bonus GIS game!

#FOSSFeb #OpenSource #JavaScript #WebDev

Code for the shadow app I posted yesterday is up 👩🏻‍💻 This demo version is rule-based, and I also built an AI-powered version with a quick video walkthrough.

🗺️ Code: codepen.io/cyatteau/pen...
🎥 Video: www.youtube.com/watch?v=ooj5...

#JavaScript #AI #GIS #ArcGIS

Build your own Leaflet map for FOSSFeb Day 1. New open source tutorial every weekday in February.

Link to game: leaflet-game.netlify.app

#FOSSFeb #Leaflet #JavaScript #OpenSource

Groundhog Day inspired a shadow experiment 🌥️🗺️

I built a 3D shadow analysis mini app. Adjust the time range, hover to sample shadow duration, click to pin and explain.

I’ll share the code soon 👩🏻‍💻

#ArcGIS #GIS #3D #maps

It's FOSSFeb (Free and Open Source Software February) 💙 Let's celebrate open source web dev all month!

What project should I feature? Comment it below.

#JavaScript #OpenSource #WebDev

It's Fun at Work Day and I'm like... wait, that’s just my job! 😄🗺️

I get to build demos that show developers fun ways to use Esri services.

If you missed it, yesterday I posted a map tile puzzle app I built.
arcgis-puzzle-game.netlify.app

See the code: codepen.io/cyatteau/pen...

#ArcGIS #maps

If you like puzzles and maps, this is for you 🧩🗺️

For Puzzle Day, I built a map tile puzzle using the ArcGIS Geocoding Service and the ArcGIS Static Basemap Tiles service.

Play now: lnkd.in/eKbJgj7z

Code coming soon 👩🏻‍💻

#ArcGIS #maps #puzzle

𝗜𝘁'𝘀 𝗧𝗵𝗮𝗻𝗸 𝗮 𝗣𝗹𝘂𝗴𝗶𝗻 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝗗𝗮𝘆!

MapLibre GL JS + ArcGIS basemap styles and layers, made easier with the MapLibre ArcGIS plugin. 🗺️

#ArcGIS #MapLibre #GIS