Full-Stack FastAPI and Next.js Developer (Supabase and Pi Network Integration)
Budget: $250 – $750 CAD
Full-Stack FastAPI and Next.js Developer (Supabase and Pi Network Integration)
Contract Type: Fixed price with milestones - Looking at $450 USD
Bonus: $150 for verified Pi SDK integration (test-Pi on Pi Testnet)
About PredictPix
PredictPix is a community forecasting platform built for the Pi Network.
Users make predictions on real-world events using Pi, demonstrating collective intelligence and real network utility (not gambling or speculation).
Our MVP is nearly complete and already deployed on DigitalOcean.
Both backend (FastAPI) and frontend (Next.js 15) are live and connected to Supabase.
We are looking for a strong full-stack finisher to polish, stabilize, and finalize the Pi Testnet launch version.
What Is Already Working
FastAPI backend (predictpix.service)
Next.js 15 frontend (predictpix-ui.service)
Supabase (Postgres) database synced and live
Nginx, SSL, and Cloudflare configured
Branding, theming, and market creation complete
Pi Browser validation key deployed
What Is Left To Do
Milestone 1 - Integration and UI Finalization - $200
Wire remaining data calls for /account, /leaderboard, and /admin pages
Add leaderboard endpoint (aggregate user accuracy, participation, and results)
Fix modal and JSON fetch issues (Prediction Details, History, Recent Activity)
Confirm REST to Supabase data consistency
Verify CORS, Nginx, and domain routing for Pi Browser access
Match visuals to reference screenshots and confirm full mobile responsiveness
Deliverable: PredictPix runs cleanly in the Pi Browser, with all pages functional and accurate Supabase data.
Milestone 2 - Testnet Deployment Readiness - $250
Confirm smooth operation on the DigitalOcean droplet (backend, frontend, and Nginx)
Ensure all functions are working and secure as needed
Ensure HTTPS, SSL, and domain routing are stable
Validate that all prediction submissions, admin resolutions, and leaderboard updates complete end-to-end
Prepare README.md and setup docs for GitHub (so new contributors can run the app locally)
Provide a short video walkthrough or checklist verifying launch readiness
Prep for country IP bans where necessary for regulatory requirements
Deliverable: Fully deployable PredictPix MVP, operational in Pi Browser on the Pi Testnet, with database and admin tools functioning as expected.
Bonus (Optional Milestone) - Verified Pi SDK Integration - $150
Implement Pi SDK login and payments flow for Pi Testnet (non-custodial)
Connect front-end SDK actions to new backend verification routes (/api/pi/payments/init and /complete)
Verify transactions using PI_SERVER_API_KEY and confirm test-Pi movement on the Pi Testnet
Update database entries to mark predictions as paid upon successful transaction
Provide a brief demo video showing an end-to-end transaction in Pi Browser
Deliverable: Functional Pi SDK payment integration verified on Testnet (Pi moves between test wallets successfully).
Bonus: $150 released upon verified completion.
Ideal Developer
Solid experience with FastAPI and Next.js (App Router)
Strong Supabase and PostgreSQL query and RPC skills
Skilled in debugging deployed apps (not just new builds)
Knowledge of async Python, fetch handling, and JSON structure validation
Familiar with Ubuntu 22, Nginx, and DigitalOcean server configuration
(Bonus) Prior exposure to Pi Network SDK or blockchain testnets
Tech Stack Overview
Layer: Technology
Frontend: Next.js 15, Tailwind, shadcn/ui (React, TypeScript)
Backend: FastAPI (Python 3.11)
Database: Supabase (Postgres)
Deployment: DigitalOcean, Nginx, Lets Encrypt TLS
Blockchain (Testnet): Pi SDK integration (login and payments)
Deliverables
Functional /account, /leaderboard, and /admin pages
Verified prediction submission and resolution flows
Mobile-ready, responsive UI for Pi Browser
Fully deployable PredictPix MVP on Testnet
Clear documentation and walkthrough for QA
Optional Bonus: Verified Pi SDK payment integration with test-Pi
Timeline
Approximately 7-14 days from project start for Milestones 1 and 2
Plus 2 to 3 days optional for Pi SDK bonus milestone
Contract Type: Fixed price with milestones - Looking at $450 USD
Bonus: $150 for verified Pi SDK integration (test-Pi on Pi Testnet)
About PredictPix
PredictPix is a community forecasting platform built for the Pi Network.
Users make predictions on real-world events using Pi, demonstrating collective intelligence and real network utility (not gambling or speculation).
Our MVP is nearly complete and already deployed on DigitalOcean.
Both backend (FastAPI) and frontend (Next.js 15) are live and connected to Supabase.
We are looking for a strong full-stack finisher to polish, stabilize, and finalize the Pi Testnet launch version.
What Is Already Working
FastAPI backend (predictpix.service)
Next.js 15 frontend (predictpix-ui.service)
Supabase (Postgres) database synced and live
Nginx, SSL, and Cloudflare configured
Branding, theming, and market creation complete
Pi Browser validation key deployed
What Is Left To Do
Milestone 1 - Integration and UI Finalization - $200
Wire remaining data calls for /account, /leaderboard, and /admin pages
Add leaderboard endpoint (aggregate user accuracy, participation, and results)
Fix modal and JSON fetch issues (Prediction Details, History, Recent Activity)
Confirm REST to Supabase data consistency
Verify CORS, Nginx, and domain routing for Pi Browser access
Match visuals to reference screenshots and confirm full mobile responsiveness
Deliverable: PredictPix runs cleanly in the Pi Browser, with all pages functional and accurate Supabase data.
Milestone 2 - Testnet Deployment Readiness - $250
Confirm smooth operation on the DigitalOcean droplet (backend, frontend, and Nginx)
Ensure all functions are working and secure as needed
Ensure HTTPS, SSL, and domain routing are stable
Validate that all prediction submissions, admin resolutions, and leaderboard updates complete end-to-end
Prepare README.md and setup docs for GitHub (so new contributors can run the app locally)
Provide a short video walkthrough or checklist verifying launch readiness
Prep for country IP bans where necessary for regulatory requirements
Deliverable: Fully deployable PredictPix MVP, operational in Pi Browser on the Pi Testnet, with database and admin tools functioning as expected.
Bonus (Optional Milestone) - Verified Pi SDK Integration - $150
Implement Pi SDK login and payments flow for Pi Testnet (non-custodial)
Connect front-end SDK actions to new backend verification routes (/api/pi/payments/init and /complete)
Verify transactions using PI_SERVER_API_KEY and confirm test-Pi movement on the Pi Testnet
Update database entries to mark predictions as paid upon successful transaction
Provide a brief demo video showing an end-to-end transaction in Pi Browser
Deliverable: Functional Pi SDK payment integration verified on Testnet (Pi moves between test wallets successfully).
Bonus: $150 released upon verified completion.
Ideal Developer
Solid experience with FastAPI and Next.js (App Router)
Strong Supabase and PostgreSQL query and RPC skills
Skilled in debugging deployed apps (not just new builds)
Knowledge of async Python, fetch handling, and JSON structure validation
Familiar with Ubuntu 22, Nginx, and DigitalOcean server configuration
(Bonus) Prior exposure to Pi Network SDK or blockchain testnets
Tech Stack Overview
Layer: Technology
Frontend: Next.js 15, Tailwind, shadcn/ui (React, TypeScript)
Backend: FastAPI (Python 3.11)
Database: Supabase (Postgres)
Deployment: DigitalOcean, Nginx, Lets Encrypt TLS
Blockchain (Testnet): Pi SDK integration (login and payments)
Deliverables
Functional /account, /leaderboard, and /admin pages
Verified prediction submission and resolution flows
Mobile-ready, responsive UI for Pi Browser
Fully deployable PredictPix MVP on Testnet
Clear documentation and walkthrough for QA
Optional Bonus: Verified Pi SDK payment integration with test-Pi
Timeline
Approximately 7-14 days from project start for Milestones 1 and 2
Plus 2 to 3 days optional for Pi SDK bonus milestone