timjulien (@timjulien) header
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CTO @radarlabs, former VP of Engineering @bonobos, hacker @foursquare, snowboarder and karaoke-er. CMU alum.

New York
Joined April 2008
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What 1 billion API calls / day looks like in real time ⁦⁦@radarlabs⁩ HQ – at Manhattan, NY
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timjulien retweeted
Are you DIr+, Staff+ or dev tool founder in NYC? Join me to discuss "Scaling Agentic AI in the SDLC" - 3/31 6pm, NYC Most of the CTOs I speak to have had their “claude code moment” by now, but the question is how to safely and reliably scale from augmented to agentic engineering in complex brownfield code bases and how to propagate good practices across larger engineering orgs. On Tuesday, March 31st in conjunction with @heavybit and @radarlabs  I'll be co-hosting an evening of short talks, an engineering leadership panel, and honest conversation about what's actually working as engineering teams work on scaling agentic workflows across the software development lifecycle. luma.com/2026-03-agentic-sdl…
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The team that built the thing that powers 1 billion api calls / day @radarlabs
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timjulien retweeted
Forget everything you thought you knew about geolocation. Radar is now the world's first Location OS, with new AI-enabled solutions for fraud, marketing, and operations teams. bit.ly/3Kt6fwl
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Giving everyone a peek at the internals of HorizonDB, our geospatial database @radarlabs written in Rust powering 1 billion API calls / day: radar.com/blog/high-performa…
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I’ll be speaking at State of the Map US this Friday in Boston. Looking forward to sharing how we built HorizonDB, which powers geocoding at @radarlabs . If you’re attending @sotmus , hope to see you there!
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timjulien retweeted
Our winter 2025 product release is here. This quarter, we’re announcing: 📊 New risk and compliance reporting for gaming customers 🔔 Campaign builder and new out-of-the-box location-based marketing tools 🌎 General availability of international address coverage for geocoding and address autocomplete APIs These features further position Radar as the only all-in-one location platform, from retail and restaurants to logistics and gaming: radar.com/blog/winter-2025-p…
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Since launching our Maps platform in 2023, hundreds of companies have switched to @radarlabs from Google Maps/Mapbox. To support our next phase of growth we're hiring a director to license global map data across many different map layers and build out our channel partner program.
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Quick snapshot of @radarlabs : • Processing 1 billion API calls / day • Built a Geospatial database we call HorizonDB (Rust/RocksDB) • Built "remote control" for Geofencing • <1m accuracy Ultra-wideband positioning • Ready to operate in 18 states for iGaming (soon all avail)
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This is how @radarlabs works.
Life of an engineer at Braintrust: * talk to customers on Slack to field feedback, bugs, feature ideas * ship every day * (with help) figure out what to build, design it, build it, test it, solicit feedback. Not for everyone, but for certain folks it's uniquely awesome.
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.@radarlabs now doing 1B API calls / day
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timjulien retweeted
Radar IRL returns to NYC on September 19! From magical new location capabilities to a performance by the world-famous Penn from Penn & Teller, you won't want to miss it. Save your spot today! events.radar.com/irl
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timjulien retweeted
Candidates often ask us what Radar's culture is like, so we made a video! We're hiring across Sales, Marketing, Customer Success, Engineering, Design, and Finance. Come help us build the future of location: radar.com/jobs
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timjulien retweeted
⚠Preliminary info: #earthquake (#sismo) about 20 mi W of North Plainfield (New Jersey) 1 min ago (local time 10:23:19)❗MAGNITUDE NOT AVAILABLE YET❗Updates at: 📱emsc-csem.org/lastquake/how_… 🌐m.emsc.eu 🖥emsc-csem.org – at New Jersey, USA
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