Developer Needed to Finalize SaaS Subscription & Billing Flow

Job Description

Project Type: Short-Term (Pre-Launch Cleanup)
Platform: Replit
Compensation: $3–$7/hr
Potential: Long-term role with higher pay

Project Overview

I’m looking for a developer to review, clean up, and finalize the subscription and billing logic for a micro SaaS product.

The product is live but not yet launched and currently has no users. This is a pre-launch refinement task focused on ensuring the subscription system is clean, predictable, and production-ready before going public.

The subscription model is intentionally simple:

• Three paid tiers
• 7-day free trial

This is not an enterprise-scale billing system — but it must be correct, easy to reason about, and reliable from day one.

Scope of Work

• Review and understand existing subscription logic
• Refactor and clarify billing flow where needed (without unnecessary rewrites)
• Ensure correct handling of:
  • Free trials
  • Initial purchases
  • Upgrades and downgrades
  • Basic proration logic
  • Subscription state tracking
• Ensure accurate display of current plan and billing status
• Make the system easier to maintain and reason about

Technical Context

• Built inside Replit
• AI-assisted codebase
• You must be comfortable reading and improving existing logic rather than rebuilding from scratch
• Likely integrated with a billing provider (e.g., Stripe or similar)

Ideal Candidate

• Has implemented SaaS subscription systems before
• Understands common pitfalls around:
  • Trial abuse
  • Edge cases in upgrades/downgrades
  • State mismatches between database and payment provider
• Comfortable working in AI-assisted environments
• Writes clean, structured, readable logic
• Thinks in terms of system clarity and predictability

What Success Looks Like

• Subscription state is always accurate
• Trial logic behaves correctly
• Plan changes work smoothly
• Billing flow is easy to understand and maintain
• System is ready for launch