David

Backend Engineer

// santo domingo, do · UTC-4

The server is the truth, your client should be a reflection of the truth, not a damn copy with…

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Scouting report

DR mobile/backend dev — Flutter, Firebase, Elixir, strong opinions

assessed from open-source footprint

Staff

69signal

David is a server-minded mobile and backend developer (Dart/Flutter, Firebase, with Elixir in the mix) and the most-followed person here at 18 followers across 20 original repos. The shipped work is interview-sized — a Flutter planets-quiz app (pylot) and an Android vacancy test — with low stars (max 1) and moderate abandonment (45%). A thoughtful cross-platform engineer whose architectural convictions and Elixir breadth set him apart.

Authorship & open source

Solo authorwrote 100% of commits on pylot

21 merged PRs4 commits / yr4 external projects1 reviews823 private contributions / yr

Contributes to

PostHog/posthog34,775★
Jpisnice/shadcn-ui-mcp-server2,776★
PostHog/posthog.com1,027★
PostHog/posthog-flutter98★

What they build

Mobile35%

Frontend27%

Backend27%

Systems10%

Industry experience

Social & Community
Climate & Sustainability
Productivity & SaaS

Signal breakdown

Originality76

Impact77

Consistency82

Polish30

Stars

top repo 1

Original repos

35% forks

Followers

On GitHub

8.2 yr

Live demos

Activity

Active

45% stale

Strengths

Verified author — wrote 100% of commits on pylot
Open-source contributor — 4 external projects incl. PostHog/posthog (34,775★)
21 merged pull requests
Original builder — 20 of their own repositories
Mobile focus with Frontend
Domain experience in Social & Community & Climate & Sustainability
Core stack: Dart, TypeScript, JavaScript, C++

About

The server is the truth, your client should be a reflection of the truth, not a damn copy with its own state — 31 public repositories and 18 followers on GitHub.

Skills

Dart
TypeScript
JavaScript
C++
Cloud Functions
Firebase
Java
Elixir

Featured work

pylot

Pylot. A flutter app to learn about planets and take quizzes to prove your knowledge about the solar system.

Dart

by David

Random User Android

Aplicación de prueba para vacante

Java
Android Application
Android Development

by David

Convex Flutter Counter Sample

This is a Flutter sample app that talks to a Convex backend. It shows a real-time counter that stays in sync across devices using a WebSocket subscri…

Dart

by David

Firebase Cloud Functions Read Emails

Receive emails with Firebase Cloud Functions

TypeScript

by David

Flutter Read Emails

An app that reads and listens for incoming emails

by David

Cursor Context

A collections of cursor rules, dodcumentation, notepads and so on

Code

by David