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

How to Pay Off Student Loans Faster with Extra Payments

Paying extra on a student loan does more than shorten the timeline — it reduces the principal that generates future interest. Here's how different extra payment amounts compare, and what to confirm with your servicer before sending more.

Article

Monthly vs Annual vs Lump Sum Mortgage Payments: Which Saves More Interest?

$200/month and $2,400/year sound equivalent — but they produce different savings. Here's how the three extra payment strategies compare with real numbers, and which one fits different cash flow situations.

Article

What Return Rate Should You Assume for Retirement Planning?

The return rate you enter into a retirement calculator can change your projected balance by hundreds of thousands of dollars. Here's what historical data supports, how fees and inflation affect the number, and how to choose a realistic assumption.