Konstantin Zolotarov

Running payments without orchestration often looks straightforward on the surface. A customer clicks “pay,” the request goes to a provider, and either the transaction succeeds or it fails. But anyone who has worked with payment systems at scale knows this simplicity is an illusion. Behind that single click sits a chain of decisions: which provider […]

Fintech products rarely operate as standalone systems. They sit between banks, card networks, ledger services, compliance tools, and user-facing interfaces, each with its own data model, timing, and assumptions. The result is a layered architecture where transactions, balances, and statuses exist in multiple places at once, each telling a slightly different version of the same […]

A balance can look correct and still hide problems. This usually shows up once the flow becomes more complex than a single update, especially when the same operation can be retried, partially completed, or confirmed later. A webhook may be processed twice, a refund may be created before the original payment is fully settled, or […]

Security is often treated as something that can be handled later, once the product is already working. In practice, most issues do not come from something obviously broken, but from decisions that seemed reasonable at the time. A shortcut in authentication, a loosely defined access rule, an integration added without much thought about data exposure. […]

The conversation around cloud providers has shifted fundamentally. If you asked a founder back in 2023 how they chose their stack, the answer usually revolved around free credits or which database their CTO liked best. Fast forward to 2026, and the landscape is unrecognizable. Today, infrastructure is no longer just a background utility: it is […]

Most software projects do not fail because of poor engineering. They fail because the capital runs out before the product reaches the market. Budgeting for software is difficult because you are not purchasing a fixed commodity. Instead, you are investing in a system of variables where unknowns are part of the architecture. When a budget […]

Most SaaS products don’t struggle with a lack of data. If anything, they already collect more data than they can realistically use. By the time a product gains traction, dashboards are already full, events are tracked across multiple tools, and new data keeps coming in every day. It often feels like everything needed for decision-making […]

In the modern digital workspace, we are not exactly suffering from a lack of data. If anything, we have too much of it. Between Jira tickets, Notion pages, Slack archives, and thousands of PDFs, the collective intelligence of a company is often buried under layers of digital noise. Statistically, employees spend nearly 20% of their […]