You will get Web Calculator ā Let's do it with Certified Developer šš
Rising Talent
Project details
š If you already have the calculator ā i can fix or improve it.
š¤ Buy this project to work on your existing calculator.
ā¤ļø Full refund if you don't get a fix.
āļø Full time freelancer
āļø 3 years on Upwork
āļø 9 years on Front-End
āļø Product Developer from MVP to monetization
āļø Certified by IBM, Google, Intel, Cisco, Make and others
ā Contact me if you need automations or calculators š
š¤ Buy this project to work on your existing calculator.
ā¤ļø Full refund if you don't get a fix.
āļø Full time freelancer
āļø 3 years on Upwork
āļø 9 years on Front-End
āļø Product Developer from MVP to monetization
āļø Certified by IBM, Google, Intel, Cisco, Make and others
ā Contact me if you need automations or calculators š
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included $70
These options are included with the project scope.
$70
- Delivery Time 1 day
- Number of Revisions 0
- Bug Investigation
- Fix Documentation
60 reviews
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JK
Jake K.
Aug 10, 2026
Help me fix my Zapier script
DL
Dan L.
Aug 3, 2026
Add map to perspective as specified in loom video
Serhii was a great professional. Very, very easy to work with. I really enjoyed our collaboration.
JK
Jake K.
Feb 27, 2026
Help me fix my Zapier script
EH
Emily H.
Sep 2, 2025
eBay Fees Calculator
NV
Nataliia V.
Aug 14, 2025
You will get Outsur Hosting maintenance & support
About Serhii
Front-End ā Calculator, Configurator, Form, Integration, Automation š„
100%
Job Success
Kyiv, UkraineĀ - 7:32 pm local time
āļø Interactive business apps expert
āļø Integrated solutions architect
āļø 12 years in Product Development
ā Contact me if you need business automation or interactive calculators š
Certified by Intel, IBM, Microsoft, Google, Cisco, Make and others.
I build interactive business applications: ROI calculators, pricing tools, mortgage estimators and product configurators.
I work directly with clients and can dedicate my schedule to your project.
HOW TO GET STARTED:
My workflow is highly autonomous and focused. You will get the best results if you simply describe your goal ā this could be a text message, doc, or a Loom video. I will review it independently, plan the architecture, and discuss the roadmap with you. This initial alignment does not require a contract or billable hours š
Custom App solution (Enterprise-Grade):
GitLab ā store source code and version control.
Docker ā package isolated/secured (stand-alone) app.
Nuxt ā type-safe, performant and production-grade engine.
CI/CD ā automated deploy to production and test environment.
No-Code / Low-Code options (rapid deployment):
Outgrow - Calconic - Calculoid - Jotform - GoHighLevel
ARForms - TypeForm - Paperform - Fillout
Formidable - Formsite - InvolveMe - Tally
Gravity Forms - Heyflow - 123FormBuilder
Softr - Framer - Stripe - Make - Zapier - ClickUp
Worldwide markets:
United States - Europe - Australia
š My work focuses on complex internal logic and calculations designed to increase sales and generate qualified leads.
š If you already have a Google Sheets or Excel file with formulas, I can turn it into a secure, production-ready web application.
š Launch your Calculator, lead the market, and beat the competitors.
My stack:
Payment Gateways ā Stripe, PayPal, Square.
Website Embedding ā WebFlow, Framer, WordPress, WooCommerce.
Mail Services ā Brevo, SendGrid, MailChimp.
Databases ā AirTable, Supabase, MySQL.
Automations & API ā Zapier, Make, n8n, Pipedream, Prototype, IFTTT, Integrately, Bit Flows.
Frontend ā Vue, React, JavaScript (ES6+), HTML5, CSS3.
Backend ā Nuxt, Node.js.
Whether you need a custom application or a no-code solution, my goal is to build a tool that delivers measurable business value.
You are awesome!
š
šš
Steps for completing your project
After purchasing the project, send requirements so Serhii can start the project.
Delivery time starts when Serhii receives requirements from you.
Serhii works on your project following the steps below.
Revisions may occur after the delivery date.
Check & fix