My background
Hi, I'm Bojan Marinkovic—a Production Technician by profession and a digital publisher. I combine a technical, process-oriented background with a strong interest in web development, online tools, and useful digital experiences.
I also study financial markets, currency trading, and long-term investment strategies. That is ongoing personal study and subject interest. It is not presented as professional financial practice, a license, or client experience.
What I personally do on MyCalcVault
- Define the model: decide what a tool will calculate, how each input is interpreted, and which real-world costs remain outside it.
- Build the interface: connect labeled inputs to the formula, result breakdown, comparison table, and any schedule or CSV export.
- Test reproducible cases: check known answers, a zero-rate boundary where applicable, invalid inputs, and the default values readers first see.
- Write the explanation: document the calculation order, rate convention, exclusions, and the records a reader should use to replace planning assumptions.
- Own corrections: reproduce reported errors and change the affected page, its test record, and its date when a substantive correction is made.
How my production background applies
Production work depends on clear inputs, repeatable steps, boundary checks, and outputs that another person can inspect. I use that same discipline for calculator implementation: define the unit and rate convention, keep unrounded values through the model, compare against known-answer cases, and make exclusions visible beside the result.
This is relevant technical and publishing experience. It is not a substitute for underwriting, accounting, tax, legal, or regulated financial-advice experience.
Public work record on this site
| Published system | Implementation responsibility |
|---|---|
| Mortgage and home-buying tools | Fixed-payment amortization, all-in ownership inputs, extra-principal comparison, affordability, cash-to-close, and rent-versus-buy worksheets. |
| Auto-loan tool | Itemized financed amount, trade equity and payoff, tax and fees, term comparison, extra principal, and payment schedule. |
| Savings tool | APY-consistent monthly growth, contribution timing, target solving, goal timing, milestones, and export. |
| Investment scenario tool | Gross return, fee drag, inflation-adjusted value, annual contribution growth, scenario comparison, and schedule. |
| Calculation specification | Formulas, exact model boundaries, reproducible test vectors, rounding rules, release notes, and correction protocol. |
Credentials and limits
This profile does not claim a finance degree, advisory license, professional certification, employment by a financial institution, or experience managing money for clients. No such credential has been provided or implied.
MyCalcVault is not a bank, lender, broker, accounting firm, law firm, or licensed advisory practice. The content is educational and general. It is not individualized financial, investment, legal, or tax advice.
Corrections and accountability
If you find a possible formula error, unclear assumption, outdated source, broken link, or accessibility problem, use the contact page or email contact@mycalcvault.com. Include the page URL and, for a calculator issue, the inputs and result you received.
Substantive corrections should change the affected page's visible review date and structured-data date. Dates are not updated merely because the site was deployed or a template changed.