Full-Stack Developer

Location: Remote (US work hours)
Type: Full-time, Independent Contractor

Role Overview

We are seeking a full-stack developer to build a next-generation financial data platform, with the flagship feature being an AI-powered financial chatbot. Users will ask questions such as “What are Amazon’s cloud revenues for each of the last 5 years?” and the system will generate accurate insights supported by charts, tables, and text.

Beyond the chatbot, you will build dashboards showcasing real-time market activity—charts, tables, heatmaps, screeners, watchlists, and more. The role spans the entire stack, including backend data pipelines, AI/LLM flows, frontend UI, charting, and system optimization.

An early simple version of one component (watchlist) is visible at stock-miner.com.

What You’ll Work On

Chatbot & AI System

Build data pipelines to ingest, parse, transform, and store financial datasets (structured and unstructured).
- Structured: prices, fundamentals, earnings, analyst ratings
- Unstructured: SEC filings, earnings call transcripts, investor presentations
Implement LLM workflows:
- Embeddings → OpenAI
- Vector search via pgvector
- RAG pipelines → prompt construction → output generation
- Validation steps to catch inaccuracies (dates, values, hallucinations).
Perform prompt engineering to improve accuracy and handle edge cases.
Build charts for chatbot responses (Highcharts or similar).

Market Dashboards & UI

Build dashboards showing market activity using charts, tables, heatmaps, screeners, and watchlists.
Implement responsive, high-quality UI in React/Next.js.

Backend Engineering

Design and optimize PostgreSQL schemas, caching layers, and query performance.
Build real-time data features (WebSockets, polling).
Scale coverage to thousands of U.S. stocks.

Why Charting Expertise Matters

Visual presentation is a major differentiator. Data must look clean, accurate, and beautiful. Charts will be shared on X and other platforms as a core part of product growth.

Collaboration & Process

You will work directly with the founder, who owns product direction and brings deep finance and investing experience (10+ years). You will lead technical execution across the stack.

Current Tech Stack

Frontend: React, Next.js (App Router), TypeScript, Tailwind
Backend: Next.js Server Actions, API Routes
Database: Supabase (PostgreSQL + pgvector)
AI/LLM: OpenAI API, embeddings, RAG
Charts: Highcharts, TradingView Lightweight Charts, HTML5 Canvas
Data APIs: FMP, Polygon.io, SEC EDGAR

Required Experience

Strong experience with React and TypeScript
Experience with Next.js
Proficiency with PostgreSQL
Understanding of REST APIs and modern data-fetching patterns
Experience with OpenAI API or similar LLM integrations
Familiarity with vector databases and RAG workflows
Knowledge of real-time data patterns (WebSockets, polling)
Clean code, strong attention to detail
Good English and communication skills

Nice to Have

Experience with financial data or fintech applications
Experience with charting libraries (Highcharts, D3, TradingView Lightweight Charts, Recharts, etc.)

Full Stack Developer - 16722