Add the functionality your website needs. Improve an existing interaction. Find out why a feature works sometimes and fails at other times.
I’m Oksana Koyfman, an independent developer with 10 years of web development experience. I build, extend and troubleshoot JavaScript functionality on websites outside Salesforce as well as Salesforce portals. We’ll review your existing setup and agree on the scope before work begins.
Feature development is quoted separately. Troubleshooting diagnostics start at $295.
Build or extend the front-end functionality behind searchable lists, filters, editable tables, interactive controls and custom components.
We define what users need to do, how the feature should behave and how it fits your current website.
Create or improve forms with dependent fields, clear validation, loading feedback and reliable submission handling.
The work can include preserving user input after an error, coordinating requests and preventing repeated submissions while a save is in progress.
Connect the interface to existing data sources or third-party services, and improve how widgets behave within your site.
I review the available integration points, response handling, initialization and cleanup before recommending changes.
Investigate errors that block rendering, outdated search results, broken interactions and issues that appear only after navigation or repeated use.
I trace the affected code and request sequence, reproduce the problem where possible, and provide findings and a scoped fix proposal.
Share the page or feature, what it should do and what happens today. Include your timeline and, for an issue, the steps that trigger it.
We review the existing code and dependencies as needed, then agree on deliverables, acceptance criteria, price and timing before development begins.
Check the change against the agreed requirements and relevant browser, mobile, loading and error states. Receive a plain-language explanation of the work.
I bring 10 years of web development experience, including 5 years building and fixing Salesforce solutions. My focus is the functionality people interact with: components, forms, data and the behavior that connects them.
Communication is primarily by email, so requirements, decisions and updates stay easy to refer back to.
No. This service covers JavaScript development and troubleshooting on other websites too. Send the website address and what you want to build or fix, and I’ll confirm fit after reviewing the setup.
Yes. We can scope a targeted enhancement or fix within your existing website. I’ll review the affected code and dependencies to identify what the work involves.
Share your platform, framework and any relevant integrations in your inquiry. I’ll confirm whether the work fits my experience before committing to a scope or price.
New features and enhancements are scoped and quoted separately based on their requirements. Troubleshooting diagnostics start at $295 and include findings, a recommended fix and a quote. The diagnostic fee is credited toward the fix if you proceed.
Yes. A defined feature or a focused fix can be a standalone engagement. No retainer is required. Urgent work depends on availability and scope.
Email a short description. I’ll confirm whether I can help and what the next step would be.
Please do not send passwords or customer data.