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Full Stack Engineer (Next.js)
United States · 4 days ago · Over 100 applicants
Promoted by hirer · Actively reviewing applicants


$50/hr

 Remote
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Part-time

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Full Stack Engineer (Next.js)
IcarusGrowth · United States (Remote)

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About the job


We're building Quickscope, an internal sales enablement tool for a fractional CFO firm that automates financial audit deck creation. 



Currently, CFOs spend 3+ hours manually prepping each deck. Our goal is to reduce this to minutes through intelligent automation.


The challenge: 



We have a functional Next.js prototype built with AI assistance. OAuth works, the dashboard is live, but critical features need production-ready implementation.


We need an experienced developer to audit the codebase and complete Phase 1. 



GitHub: https://github.com/Staxx7/quickscope


Our stack includes:



Frontend/Backend: Next.js 14+ (App Router), TypeScript
Database: Supabase (PostgreSQL)
Hosting: Vercel serverless functions
APIs: QuickBooks Online OAuth 2.0
AI: Claude Sonnet 4, GPT-4o


What needs building:



Complete QuickBooks Data Extraction

Currently pulls only summary data from P&L and Balance Sheet
Need: Comprehensive extraction (transactions, customers, vendors, AR/AP aging, cash flow)
Implement proper OAuth token refresh (tokens expire hourly)
Handle rate limiting (500 req/min per company)


Enhanced AI Financial Analysis

Current: Generic prompts missing critical insights
Need: Sophisticated prompt engineering for sales intelligence extraction (decision makers, pain points, buying signals)
Structured financial ratio analysis with actionable recommendations


Real Industry Benchmarking

Current: Returns mock data
Need: Integration with FRED API, Census Bureau, Bureau of Labor Statistics
Intelligent industry classification and comparative analysis


Presentation Generation

Current: Outputs JSON
Need: Generate actual PowerPoint (.pptx) or PDF files
Professional formatting with charts/visualizations
Delivered within 2-3 minutes


Serverless Architecture

Handle Vercel function timeouts for long-running operations
Implement job queue patterns and progress tracking
Robust error handling and retry logic


Your first week involves conducting a comprehensive code audit and delivering a technical specification document including:



Current state assessment
Prioritized issues and fixes
Architecture improvement recommendations
Phase 1 implementation timeline
Testing strategy


Required experience includes:



5+ years full-stack development
Expert TypeScript and Next.js (App Router)
Production OAuth 2.0 implementations with financial APIs (QuickBooks, Xero, Plaid, Stripe, etc.)
Supabase or PostgreSQL in production
Serverless architecture patterns (Vercel, AWS Lambda)
LLM API integration (OpenAI, Anthropic) in production applications
Document generation experience (PowerPoint/PDF via code)


Strong plus:



Fintech or accounting software background
AI prompt engineering experience
Has "rescued" AI-generated codebases before


Timeline: Immediate start.


Phase 1 runs 8-12 weeks to fully operational internal tool.
Phase 2 in Q2/Q3 2026+ for enterprise and go-to-market features.


This is a contract-to-hire opportunity, $50-100/hour based on experience. 



Please apply if interested! We will send over more context and video breakdowns of the tool once you apply.


To reiterate: The first week involves conducting a comprehensive code audit and delivering a technical specification document.