Software engineer · Drummer · Colorado

Hi, I'm David.

I build web and mobile apps with React, React Native, TypeScript and Node. Six years in, most recently at Coalesce.io, and before that as a cofounder of IN., the Together app. Now I'm building Wattage, a smart trainer app for iPhone and Apple Watch.

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David under the Manhattan Bridge in Brooklyn

Code

Six years of web and mobile apps. Building Wattage now. GitHub

Drums

Playing with my band, @prism_rioters. Listen on Spotify

Outdoors

Hiking and camping around Colorado whenever I can.

Projects

2026 · iPhone and Apple Watch · Building now

Wattage

Structured smart trainer workouts in ERG mode, outdoor rides on Apple Watch, and real ride analysis.

React NativeTypeScriptSwiftGraphQLPostgres

See Wattage →

2020 to 2022 · iOS and Android · Cofounder · No longer available

IN., the Together app

My first startup. A mobile app for doing things together, with invites and expense splitting. We grew it to 10,000 downloads and 400 monthly active users.

React NativeNodeGraphQLPostgresRedis

See IN. →

Experience

2022 to 2025Full-stack Engineer
Coalesce.io
2020 to 2022Cofounder and Full-stack Engineer
IN., the Together app
2019 to 2021Front-end Engineer
QOMPLX
2019Front-end Engineering
The Turing School
2012 to 2018B.S. Psychology
University of Colorado