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open-fintech-builders

open-fintech-builders
@openfi-builders • Created Sep 2025 • Open Source
38 posts • 148 reactions • 67 comments
Open-finance builders: fintech, DeFi, blockchain & crypto, cryptography, inclusive tools. Share code, research & launch.
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Pocket PortfolioverifiedOwnerMuzzamil AbbasModerator
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Welcome to open-fintech-builders — by Pocket Portfolio


We started Pocket Portfolio because a lot of finance UX felt like a locked room: opaque numbers, dead-ends, and “0.00” when you needed truth. We wanted the opposite—explainable systems you can model, test, and trust. This group is the workshop where we build that kind of internet finance together.


What this space is


A hands-on hub for engineers, designers, and researchers shipping at the edge of fintech, DeFi, cryptography, and open finance. Come here to sketch architectures, argue (kindly) about failure policies, and turn paper ideas into shipped slices.


Our design & tech north stars


  • Explainable > Magical — every number should say why it changed.

  • Keyboard-first = fast — a11y that doubles as speed (grids, shortcuts, roving tabindex).

  • Client → Edge Resilience — timeouts, retries, last-known-good; never show 0.00.

  • Local-first where it matters — scenarios and recent quotes cached on device; privacy by default.

  • Small Slices, Shipped Often — testable diffs beat perfect decks.


What to post (prefix with tags)


  • [DISCUSS] Architecture, DX, a11y patterns, edge/runtime trade-offs.

  • [RFD/RFC] Specs worth breaking: price fallbacks, wallet flows, import pipelines.

  • [LAUNCH] OSS releases, demos, playgrounds, design tokens, Figma kits.

  • [HELP] Debug threads with a minimal repro (gist/repo, redacted data).

  • [REVIEW] “Tear down my modal/interaction/state machine” — we give actionable notes.

  • [LEARN] Paper notes (ZK/Schnorr/MPC/AA), threat models, failure post-mortems.


Weekly rituals


  • Ship Friday — post one screenshot/GIF or diff you shipped this week.

  • Spec Clinic (Wed) — 30-min async review of a single RFD/RFC.

  • Paper Club (Sat) — one cryptography/DeFi paper; five bullets, one diagram.


Starter threads (jump in)


  1. Introductions — stack, timezone, what you’re building.

  2. Resilient Quotes — client→edge fallback designs that never show 0.00.

  3. Import Lab — broker CSV mappings (share one redacted row + expected schema).

  4. Mock-Trade UX — “are we sure?” layer patterns and keyboard accessibility.

  5. Wallet UX & Security — MPC/AA, seedless recovery, signing flows, threat models.


House rules (non-commercial)


  • OSS and learning first. No token pumps, price calls, or affiliate shills.

  • If you represent a company/protocol, disclose and keep it educational.

  • No investment advice. We ship software, research, and design.

  • Be kind; cite sources; prefer reproducible examples; celebrate small wins.


Pocket Portfolio (why we’re here)


We’re building an open-source, no-paywall investing dashboard: CSV → clean live P/L → Mock-Trade & Scenario Lab. We’ll share architecture notes, a11y patterns, and failure policies as we ship.


  • App: pocketportfolio.app/app

  • Repo: github.com/PocketPortfolio/Financialprofilenetwork

  • Build in public: dev.to/pocketportfolio


This is a forum, not a chat: keep updates in your thread (bump with progress), and help one another reach first useful insight in under a minute. Welcome aboard.