Author Profile

Vadym Denysiuk

Co-Founder & Technical Lead at FinCalWise

Vadym Denysiuk is the Co-Founder and Technical Lead at FinCalWise. He leads the technical side of the platform and helps shape the calculators and financial tools that support borrowing, saving, and planning decisions. He also contributes to selected articles and topic pages, with a focus on making technically detailed finance content practical and clear for readers.

About Vadym Denysiuk

Vadym leads the technical side of FinCalWise, with a focus on building fast, stable, and practical financial calculators for everyday use. His work spans calculator logic, formula validation, platform performance, and the technical quality of finance content across the site.

He helps turn financial formulas into tools that are easier to use for real-world borrowing, saving, and planning decisions.

He holds a Master’s degree in Digital Economics from Kyiv National University of Trade and Economics and works professionally in software development.

What Vadym Does at FinCalWise

Builds and maintains financial calculators across the platform
Translates financial formulas into working calculator logic
Tests assumptions, outputs, and calculation behavior
Improves site performance, stability, and maintainability
Contributes to technically detailed articles and topic pages

Areas of Expertise

Financial calculator logic
Formula implementation
Mortgage and loan calculations
Debt payoff and amortization
Savings and investment calculations
Technical accuracy of finance tools
Platform performance and reliability

Editorial Role

At FinCalWise, Vadym reviews calculator-related and technically detailed content to help ensure that formulas, assumptions, and explanations remain accurate, practical, and easy to follow.

Featured Articles by Vadym

Explore all articles

Article

When Does the Rule of 72 Stop Being Accurate?

Learn when the Rule of 72 provides reliable estimates, where it becomes less accurate, and how it compares with exact compound-interest calculations.

Article

Is Your Auto or Personal Loan Rate Actually Good? Here's How to Check

Wondering if your auto or personal loan rate is competitive? Learn how to check the interest rate implied by your payment, compare disclosed APR with 2026 benchmarks, and decide whether to shop or refinance.

Article

How Car Lease Payments Are Calculated: Money Factor, Residual Value, and Cap Cost Explained

A car lease payment comes from three separate charges — depreciation, finance, and tax. Learn how each part is calculated, what money factor and residual value mean, and how to verify any dealer quote with a step-by-step example.