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Custom Billing & Subscription Systems
Created 3 months ago in Technology / Software Development

I specialize in building bespoke billing systems that go far beyond the basics. From custom checkouts to multi-tier pricing, I help SaaS and product-led companies design, implement, and optimize their monetization stack.
Typical projects include:
- Custom Stripe checkout flows tailored to your product
- Real-time monitoring of signups, upgrades, and churn
- Deep CRM integrations (e.g. HubSpot, Intercom)
- Automated invoicing and dunning logic
- Support for complex billing models (metered usage, per-seat pricing, etc.)
- Detailed financial reports and audit-ready activity logs
I help founders and technical teams avoid long-term debt by getting billing right from the start—both technically and strategically.
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Tomas Zezula
Prague
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I help SaaS startups and product-led businesses build, fix, and scale their billing and subscription systems—especially with Stripe. With 20+ years of engineering experience and a specialty in billing architecture, I guide teams through critical monetization milestones. LinkedIn: https://www.linkedin.com/in/zezulatomas Web: https://tomaszezula.com Publications: https://medium.com/@TomasZezula
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