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Sebastian Báez

Software Analyst

Senior Web Developer

Junior Project Manager

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Sebastian Báez

Software Analyst

Senior Web Developer

Junior Project Manager

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Checkout & Billing Solutions

  • Created By: Sebstian Baez
  • Date: 07/08/2018
  • Client: Multiple SaaS platforms, e-commerce businesses, and enterprise clients
  • Categories: Checkout, Billing, Software, Stripe, PayPal
Checkout integrations
Payment integration is at the core of any modern digital product, and I’ve led implementations that range from simple checkout pages to complex subscription-based systems. My work with Stripe and similar providers has focused on creating seamless, secure, and flexible payment experiences that support both consumers and businesses.

My Role

Integration Leadership: Directed the setup of payment gateways with Stripe, ensuring smooth connection between frontend experiences and backend logic.

Security & Compliance: Oversaw tokenization, PCI compliance, and secure handling of sensitive payment data.

Subscription Management: Built recurring billing models with monthly/annual plans, trials, coupons, and automated invoicing.

Custom Checkout Flows: Designed and developed pricing pages, discount logic, and enterprise-level configurations with multiple tiers and user roles.

Core Features

Multi-Payment Support: Enabled processing with major credit/debit cards and alternative payment methods.

Dynamic Pricing Pages: Interactive interfaces that display plan details, promo codes, and final amounts before purchase.

Recurring Billing: Automated renewals, retries, and cancellations to ensure continuity of service.

Invoices & Notifications: Integrated invoicing, receipts, and email notifications tied directly to user actions.

Scalable Setup: Architected solutions that handle thousands of users and multiple business models, from startups to enterprise clients.
Checkout integrations mobile
Checkout integrations desktop

Impact

Seamless User Experience: Reduced friction in the checkout process, leading to higher conversion rates.

Business Flexibility: Allowed clients to manage complex billing scenarios, including bundles, discounts, and custom pricing.

Operational Efficiency: Automated recurring payments and invoicing, minimizing manual work for finance teams.

Scalability & Trust: Built payment systems robust enough to support enterprise-scale customers while maintaining compliance and security.
Tags: Application Brand Design JavaScript Next.js Software Web
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