Web Developer Needed – Fix Lead Form Validation, API & HubSpot Tracking Issues

Job Description: We are looking for an experienced developer to help fix and optimize our private jet charter website form and tracking setup. Our website includes a flight request form with airport dropdowns (API-based) and is integrated with Google Analytics 4, Google Tag Manager, Google Ads, and HubSpot. Current Issues: We are experiencing the following problems: - Users can submit incomplete or incorrect requests (past dates, missing required fields, etc.) - Form validation needs improvement (frontend and server-side if required) - Google Ads conversion tracking may be firing incorrectly - HubSpot shows many leads as “offline sources” or incorrectly attributed - UTMs may not be captured or passed properly - We need accurate tracking so we can clearly understand where leads are coming from. Expected Outcomes - Conversions fire only on real, valid form submissions - UTMs are captured and passed correctly - Leads show the correct source in HubSpot - Invalid submissions are blocked - Form logic is clean and secure - Tracking setup is verified and tested Deliverables - Improved and secure form validation - Stable airport API integration - Correct GA4 / GTM / Google Ads conversion setup - Proper attribution inside HubSpot - Brief documentation explaining what was fixed and how tracking works Proposal Requirements Please include in your proposal: - Your estimated total project cost - Estimated timeline - How you would approach debugging tracking & attribution We are looking for someone detail-oriented who understands both development and marketing tracking. Apply tot his job Apply To this Job