Payment Integration
Specialist
I help SaaS companies, marketplaces, and startups build reliable payment infrastructure using Stripe Connect, Stripe Billing, Checkout, Webhooks, subscriptions, invoicing, and custom payment workflows.
How payment integration normally works
A quick overview from Kavya — watch to see how Stripe Billing flows, webhooks, and subscriptions fit together.
How to create an escrow system with Stripe Connect
A walkthrough from Kavya — watch to see how Connect accounts, payment holds, and payout timing fit together for marketplace escrow flows.
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Payments work on day one. Then billing gets real.
Payments go through — but subscription state, webhooks, retries, upgrades, and cancellations quietly break. Revenue leaks compound. Here's what the data shows:
Access bugs — users lose features they paid for
Impact: Support tickets +40%Failed renewals — subscriptions silently expire
Impact: Revenue leak ~8%Webhook gaps — state drifts between Stripe and your app
Impact: Data inconsistencyBilling mismatches — invoices don't match actual usage
Impact: Customer churn riskUpgrade chaos — proration logic breaks mid-cycle
Impact: Revenue miscalculationManual fixes — your team is patching billing in production
Impact: Engineering time waste// process
How I Build Production-Ready Payment Systems
A methodical, data-driven approach to billing architecture — designed for SaaS that scales.
Payment Architecture First
Model subscription tiers, proration rules, invoicing, and lifecycle — before writing code. Stripe becomes the source of truth for all billing state.
Webhooks & State Sync
Secure, idempotent webhook handlers that reliably sync subscription state between Stripe and your database. No missed events.
Production Alignment
Test and live environments stay consistent. Edge cases — failed payments, expired cards, disputed charges — handled before they happen.
Real results. Real data.
Every integration I build is measured by revenue recovered, failures prevented, and engineering time saved.
Bosscoder Academy
Led engineering delivery of a full-stack marketplace platform. Architected payment and subscription systems from the ground up, handling complex multi-party billing flows at scale.
- •Reduced payment failures by 60% with smart retry logic
- •Automated subscription lifecycle management for 5K+ users
- •Built multi-tier pricing with seamless upgrade/downgrade flows
- •Zero revenue leakage after payment architecture overhaul
B2B SaaS Platform
Inherited a broken Stripe integration causing ~8% monthly revenue leakage. Rebuilt webhook handlers, subscription state management, and proration logic from scratch.
- •Eliminated subscription state drift with idempotent webhooks
- •Won 9+ Stripe disputes with proper evidence automation
- •Reduced billing support tickets by 75%
- •Implemented automated dunning and smart retry sequences
Payment integration components
Building blocks I use to deliver reliable billing: subscriptions, webhooks, and payment flows.
Questions I'll ask about your payment setup
So we can quickly identify where to focus and how to help.
Do you use a custom billing page?
Custom vs Stripe-hosted affects architecture, PCI scope, and how we handle upgrades.
How do you handle failed payments?
Dunning, retries, and communication flows are often the biggest revenue leak.
Do you prorate on plan changes?
Proration and credit logic need to be consistent and auditable.
What's your webhook and idempotency strategy?
Duplicate or missed events can cause double charges or missed renewals.
Let's fix your payment integration.
Book a 30-minute consultation with Kavya. Share your current Stripe setup, billing challenges, or integration plans — and get a clear technical assessment.
Book a Payment Integration Consultation