Finalization of PHP Integration

@ykarora26

With prior experience in PHP integrations and API development, I understand your need for finalizing the GoHighLevel and POS API integration on AWS. I have successfully completed similar projects, ensuring seamless functionality and bug-free transitions. How critical is a quick turnaround for the final sprint to the live state and bug-fix phase post go-live for your project's success? Regards, Yogesh Kumar

@rahuliitm69

Hi there, I have spent the decade working on PHP backend systems, payment integrations, webhook handling, API synchronization, and live production deployments, so I can help you safely take this GoHighLevel ↔ POS integration through the final production phase. Once you share the existing codebase access and current live/sandbox setup, I can review the remaining API flows, fix the payment type mapping, implement refund/idempotency handling, complete the gift certificate logic, and push the integration into a stable live state with proper testing and verification. I will also remain available during the 7-day post go-live window for defect fixes and production stability support. I would request to connect once so we can review the current integration status and pending sprint items properly. Thanks, Rahul A.

@smilemittal181

Hello, I can complete the finalisation phase of your existing PHP integration between GoHighLevel and the POS API and handle the remaining production-ready deployment tasks with careful live verification and minimal disruption. I have experience working with PHP integrations, webhook systems, payment workflows, AWS EC2/RDS environments, REST APIs, idempotency handling, transactional systems, and live production deployments. What I will handle: * Update and verify the correct “Online Purchase” payment type * Complete flex-value gift certificate API implementation * Implement refund/reversal API flow end-to-end * Restrict demographics updates for HSE compliance * Add webhook idempotency using order ID validation * Deploy sandbox-complete features to live * Perform live smoke testing and POS verification * Verify package products, gift certificates, and product syncing * Debug and resolve any live integration issues * Provide 7-day post go-live defect support I understand the importance of stable transaction handling, live POS accuracy, compliance requirements, and careful deployment on an active environment. I am comfortable working directly within the existing codebase and AWS setup and can move quickly through the final sprint while maintaining clean and reliable implementation. I can start immediately. Thank you.

@nikhilgarg96

Hi As an experienced PHP developer, I can assure you that I am the perfect candidate to finalize your GoHighLevel and POS API integration project. My team and I have a proven track record of building scalable web applications and custom business solutions. Our extensive expertise in PHP, AWS EC2+RDS hosting, and database architecture aligns perfectly with the needs of your project. We understand the importance of delivering a bug-free and fully functional final product, which is why our work doesn't just end with deployment. In fact, we have included a 7-day bug-fix window to ensure that even the smallest defects are resolved promptly. Moreover, our deep understanding of APIs and their integrations will be instrumental in implementing the remaining tasks such as payment type switch, gift certificate handling, refund/reversal API path, client demographics update allowlist, and GHL webhook idempotency to ultimately provide seamless cohesion between GoHighLevel and your POS system. Thanks....

@DeveloperStation

Hi there, I’ve developed multiple integrations with GoHighLevel, including a complete product that connects GHL with Shopify and WooCommerce to sync products, orders, and customers. We also implemented a webhook to create GHL leads from new orders, which is similar to your requirement of ensuring webhook idempotency. In addition to GHL, I’ve worked extensively with various POS systems, including Lightspeed, Square, and custom-built solutions. I understand the importance of delivering a fully functional product that meets your end-users’ needs. Let’s schedule a 10-minute introductory call to discuss your project in more detail and see if I’m the right fit for your needs. I’m eager to learn more about your exciting project. Best regards, Adil

@ihtsham3

I will finalize your existing PHP integration between GoHighLevel checkout and the POS API on AWS EC2/RDS, ensuring all remaining endpoints, webhook idempotency, refund flows, and compliance restrictions are correctly implemented and fully tested in both sandbox and live environments. I will also handle live deployment, controlled smoke testing, and end-to-end verification with the POS system until final sign-off is achieved. Best regards Ihtsham

@caroldata

As an ISO 9001:2008 Certified global IT service provider with over a decade of experience in the software development industry, Carol Data Technology has been consistently delivering high-quality Web and Mobile development projects that leave our clients satisfied. Our team of expert PHP developers, including myself, have profound knowledge and expertise in technologies like JS (Node JS, AngularJS, BackboneJS, ReactJS, MeteorJS, JQuery, Ajax), PHP frameworks like WordPress, Shopify, Laravel and Codeigniter. Our unique value proposition is to ensure creativity, quality, speed and cost-effectiveness in all the projects we undertake. Taking a closer look at your project specifications, I believe my skill set and long-term familiarity with PHP development make me an ideal fit for this project. Having already worked on the integration between GoHighLevel (shop checkout) and a POS API hosted on AWS EC2 + RDS puts me in a unique position to better understand your existing codebase and successfully complete the finalization phase. Moreover, our dedication to clear communication will ensure that we precisely meet each of your requirements dealt with in this project.

@royalwebraisers

Hi, As per my understanding, you need the final stabilization and live deployment phase for an existing PHP-based GoHighLevel and POS API integration on AWS, including webhook idempotency, refund flow handling, payment mapping, compliance restrictions, and production verification. Implementation approach: * Audit existing integration flow and finalize pending API logic * Implement secure webhook/idempotency and restricted demographics updates * Deploy to live EC2 environment with controlled smoke testing and monitoring Queries: * Is sandbox API access and current codebase documentation available? * Which PHP version and framework structure are currently used? * Do you already have rollback/backups prepared for live deployment? I will share my portfolio on your first message, and I am sure about the delivery after this first meeting. I will be looking forward to hearing from you.

@Herculesz

Hi I can take over the finalisation sprint for your existing PHP integration between GoHighLevel checkout and the POS API on AWS EC2/RDS. The main technical challenge is safely moving a 90% complete live integration to production without duplicate transactions, wrong payment mapping, refund gaps, or compliance-sensitive client data updates. I can review the current codebase, prior implementation decisions, POS API calls, GHL webhook handlers, RDS records, and AWS deployment flow before applying the remaining fixes. My focus will be on the payment type correction, gift certificate creation logic, refund/reversal endpoint flow, demographics update allowlist, and strict webhook idempotency using the GHL order ID. I will test each item first in sandbox, then deploy carefully to live with smoke testing and POS-side verification from the end client. I can also validate the €40, €70, €120 package products, flex-value certificates, and multi-location product syncing as part of the final go-live checklist. After launch, I can support the included 7-day defect-only bug-fix window so the final release remains stable before milestone completion. Thanks, Hercules

@taimoorkhan311

Hello, I have 4 years of experience in Web Development, PHP, API Integration, and AWS services. I understand the requirements for finalizing the PHP integration between GoHighLevel and the POS API on AWS EC2 + RDS. I can ensure the completion of the remaining tasks to bring the integration to a live state and address any post go-live bugs within the 7-day window. I am well-versed in handling online purchase payment types, gift certificate handling, refund/reversal API paths, client demographics updates, webhook idempotency, live deployment, and end-to-end verification processes. Let's discuss further details in the chat for a comprehensive understanding of the project requirements. Best regards, Taimoor from Pixels Soft

@mrresearcher99

Hi there, I’ve reviewed your PHP project requirements and would be glad to help. With 5+ years of experience in PHP and backend development, I specialize in creating secure, scalable, and high-performing web applications using modern frameworks like Laravel and CodeIgniter. I’ll begin with a clear development plan, share regular progress updates, and ensure the final product is well-tested and optimized for performance and security. Let’s connect to discuss your project goals — I’m ready to get started! Best, Bhargav PHP Developer | Laravel & Backend Expert

@jcrbahia

You mention the integration is 90% complete and needs finalisation for GoHighLevel’s shop checkout to POS API, including payment type adjustments, gift certificate handling, and idempotency for GHL webhooks. I’ll focus on delivering the seven scope items with zero regression: - Verify and enforce the correct paymentNumber for "Online Purchase" via the /paymenttypes endpoint, ensuring all transaction calls use this value instead of the default credit card code. - Clarify gift certificate generation requirements from the official API docs, implement client-side generation if needed, and validate on sandbox before live deployment. - Restrict the /clients/updatedemographics endpoint to the Irish HSE-compliant allowlist, locking immutable fields at the API layer to prevent accidental or malicious modifications. The 7-day timeline covers live deployment, smoke testing with a €1 transaction, and end-to-end verification of the four core deliverables. The €600 figure covers the scope as written; we’ll refine the number once we walk through the codebase and any undocumented dependencies in a 15-minute call.

@jayantkumar314

I’m well suited for this finalization sprint. I have strong experience with PHP backend integrations, REST API troubleshooting, webhook workflows, payment transaction logic, AWS EC2/RDS deployments, production debugging, idempotency handling, and live go-live support. I can take an existing near-complete integration, close the remaining production gaps, harden the transaction flow, implement/refine the required API behaviors, complete controlled live deployment, and support the included post-launch defect window with fast response turnaround.

@kishanbwts

I see the integration is nearly done and you need help crossing the finish line with a solid, live-ready deployment. From my experience wrapping up similar API integrations, I understand how crucial it is to tighten up details like payment type codes, gift certificate generation, and idempotency to prevent transaction duplication. First, I’ll verify the correct online purchase paymentNumber from the paymenttypes endpoint and make sure it’s used on every transaction. I’ll review the official gift certificate API docs to confirm if giftCertNo is auto-generated or requires client-side creation, then test thoroughly in sandbox and live. Next, I’ll implement the refund reversal flow end-to-end, ensuring it triggers correctly from GoHighLevel events. Restricting client demographic updates is straightforward—I’ll lock down sensitive fields per Irish HSE compliance and test that thoroughly. Idempotency is critical here; I’ll use order IDs as keys and run deliberate duplicate webhook tests to prevent double transactions. Once sandbox is clean, I’ll deploy to live and do a controlled smoke test with a €1 transaction to confirm seamless POS integration. Could you please confirm if there are any known differences between the sandbox and live POS APIs or endpoints I should watch for during deployment? Ready to start right away and deliver a smooth, verified go-live with dependable post-launch support.

@rainsys

With over a decade of experience in PHP development, I am confident I can seamlessly complete the remaining tasks for your GoHighLevel integration project. I've handled a wide range of web development projects throughout my career and your project aligns perfectly with my skills. Not only can I efficiently handle the task at hand, but my robust knowledge of AWS EC2 and RDS makes me an ideal candidate for this job. Regarding prior context on the codebase, I assure you that I navigate existing projects seamlessly. My ability to quickly understand complex code structures combined with strong analytical skills allows me to identify and rectify any issues swiftly. Furthermore, I am a firm believer in clean, user-friendly solutions — ensuring that the end product not only performs well but is also easy to maintain. Lastly, my commitment to long-term bug fixing and technical support makes me an excellent fit for your 7-day post go-live bug-fix window. My record has shown responses within 24 hours, and with my familiarity with hosting setup and optimization, bugs will be identified and fixed before they affect your clients' experience. Let's lock down these final details and get your project across the finish line together.

@webinfosoftware1

Fixing Expert, ❤️❤️____ Response within ✅24 hours of report... I have 8 yrs of experience working with PHP API integrations, AWS EC2/RDS deployments, payment workflows, webhook idempotency, & Live production debugging for transactional systems. I can finalize your GoHighLevel ↔ POS integration, complete the remaining live deployment tasks, implement secure refund/gift certificate flows, & support the full 7-day post-launch stabilization window with fast issue resolution and production-safe testing practices. Let's start & discuss in chat. -- Ravi S. { 12 yrs Experience}

@sasaprogramer21

Yes. I have experience completing and stabilising near-production PHP integrations between eCommerce front ends and external APIs, including WooCommerce and custom POS/reservation systems hosted on AWS (EC2 + RDS). In previous work, the key challenges were webhook duplication, race conditions in high-traffic order flows, and ensuring transactional consistency between frontend checkout events and backend systems. For your GoHighLevel-POS integration, I would focus on safely bringing the existing ~90% build to production ready state without destabilising working components. I would structure this as a robust, event-driven integration layer where webhook events are the primary trigger for transaction processing, with scheduled reconciliation jobs as a safety net to ensure consistency in case of missed or delayed events. Core transaction logic would be normalised into a consistent internal mapping layer so that payment types, gift certificates, refunds, and customer updates all follow a single predictable structure across the system, rather than being tightly coupled to individual GHL or POS API quirks. I also ensure structured logging and safe rollback points during go-live to minimise risk during final deployment. I’m comfortable taking over an existing codebase, reviewing current implementation quickly, and delivering a stable production release. Best Alex

@slavkom1

Hi there, I can take over the final PHP sprint for the GoHighLevel checkout to POS API integration on AWS EC2/RDS. Since you prefer the existing freelancer, I’ll first review the current code and notes instead of guessing around the last 10%. Payment type mapping, gift cert creation, refund path, and duplicate webhooks are the parts most likely to break live. I’ve worked on PHP API integrations with payment flows, webhooks, AWS servers, and live POS-style checks. I’d confirm the paymenttypes value, check /insertgiftcert behavior against the official docs, wire the refund event through the correct reversal endpoint, lock demographics fields for HSE 18+ rules, and add order-ID idempotency before live deploy. I can handle sandbox checks, live smoke test with the €1 transaction, then stay available for the 7-day defect window. Can you share the current repo/server access and any notes from the previous freelancer on what is already working in sandbox? Regards, Slavko

@AnumFatima210

Hello, I came across your Finalization of PHP Integration and I am very interested in working with you. I have reviewed your requirements and full understand the scope of expectations. I specialize in PHP, Web Development, and have successfully delivered similar projects before. I am committed to delivering high-quality work with reliability, clarity and professionalism. I work transparently throughout the project progress, deadlines and expectation stay clear at every stage. I would be glad to disucss further details and am ready to start immediately. Looking forward to hearing from you. Regards. Anum