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You will get Reliable webhook handling with retries and duplicate prevention

Franco Exequiel F.Status: Offline
Franco Exequiel F. Franco Exequiel F.
Preview image

Let a pro handle the details

Buy Web Programming Bug Fixes services from Franco Exequiel, priced and ready to go.
Franco Exequiel F.Status: Offline
Franco Exequiel F. Franco Exequiel F.
Preview image

Let a pro handle the details

Buy Web Programming Bug Fixes services from Franco Exequiel, priced and ready to go.

Project details

You will get a more reliable backend callback or event flow with clearer status handling, retry-aware logic, and duplicate prevention.

This service is for existing backends that receive webhooks, callbacks, external notifications, payment/status updates, or event-style API messages. I can help investigate why events are duplicated, missed, processed out of order, or leaving your database in an inconsistent state. Depending on the selected package, I can improve request validation, event tracking, idempotency, duplicate prevention, error handling, state transitions, retry behavior, and documentation.

Detailed code comments, when selected, are focused on critical retry, idempotency, duplicate-prevention, and state-handling logic. I avoid unnecessary comments and document only the parts that help future maintenance.

Note: for this backend service, Upwork’s “number of pages” field refers to backend units such as callback flows, event types, status workflows, or API operations, not visual website pages.
Programming Languages
JavaScript, Python, TypeScript
Coding Expertise
Performance Optimization, Security
What's included
Service Tiers Starter
$99
Standard
$299
Advanced
$599
Delivery Time 3 days 6 days 10 days
Number of Revisions
122
Bug Investigation
Fix Documentation
Detailed Code Comments
-
Optional add-ons You can add these on the next page.
Fast Delivery
+$49 - $159
Additional Revision
+$40
Detailed Code Comments (+ 1 Day)
+$49
Add handling for one additional webhook event type or callback status. (+ 2 Days)
+$119
Technical documentation (+ 1 Day)
+$75

Frequently asked questions

Franco Exequiel F.Status: Offline

About Franco Exequiel

Franco Exequiel F.Status: Offline
Back-end Developer | API integrator | FastAPI | Automation
Buenos Aires, Argentina - 8:04 pm local time
I design and implement robust RESTful APIs using Python, optimizing workflows through backend development and automation. I've delivered scalable solutions in both freelance projects and corporate environments, adapting to diverse business models. I prioritize writing clean, well-documented, and maintainable code, always focused on continuous improvement and delivering real value to every team or client I work with.

Steps for completing your project

After purchasing the project, send requirements so Franco Exequiel can start the project.

Delivery time starts when Franco Exequiel receives requirements from you.

Franco Exequiel works on your project following the steps below.

Revisions may occur after the delivery date.

Event Flow Review

I review your callback/event issue, expected behavior, existing code, sample payloads, API docs, logs, and current data/state tracking.

Reliability Mapping

I map the event flow, including received payloads, external IDs, internal references, statuses, failure cases, retries, and duplicate scenarios.

Review the work, release payment, and leave feedback to Franco Exequiel.