• Projects 8
  • Rating 4.7
  • Rating 673

Budget: 3500 UAH Deadline: 4 days

Hello! I have done similar integrations through webhooks — receiving requests, calling external APIs, and responding to users. For 3500 in 4 days, I will create a server bridge GGSEL↔FazerCards with error logging. Does FazerCards already have API documentation, or have you worked directly with their support?

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  • Rating 467

Budget: 8000 UAH Deadline: 3 days

Good day, I have over 5 years of experience in development, sales automation, and REST API integration - this is what I regularly work on.

I will create an auto-sales scheme on Node.js: the server processes GGSEL requests, purchases a card on FazerCards, and sends the data to the buyer.

A working prototype in 3-5 days. I will provide the exact cost after a few clarifications or in private messages.

Is there technical documentation for the FazerCards API or an example request?

Feel free to reach out!

  • Projects 5
  • Rating 4.9
  • Rating 756

Budget: 18000 UAH Deadline: 7 days

Hello, I have created a similar integration connector between a payment platform and an external supplier API: receiving a payment webhook, automatically requesting the purchase of goods, processing the response, and sending the details to the buyer. Retries and logging of each step were also part of that project to ensure no order was lost.

If there are delays or temporary errors in purchasing with FazerCards, it is advisable to immediately implement a queue with retry attempts and a status of "in process," which eliminates almost all lost orders during peak loads.

How many orders per day do you expect at the start, and do GGSEL and FazerCards have ready documentation on the API with a testing environment? And who will administer the system after launch?

I suggest we get in touch; I will also sketch out the flow diagram from the GGSEL webhook to sending the card number to the buyer with error handling.

  • Projects 30
  • Rating 5.0
  • Rating 5 747

Budget: 22000 UAH Deadline: 7 days

Look, there's a nuance - it's better to do this not just with a simple transfer script, but with a small server layer that includes logs, error reprocessing, and protection against duplicates. Otherwise, the auto-sale will work only until the first failure from the supplier, and then it will turn into accounting in an archaeological style =/

Estimate - from 22,000 UAH
Deadline - 5-7 working days after receiving documentation and test accesses

Here's how I see the implementation:
> we accept a request from GGSEL
> we check the signature or another method of validating the request
> we create an internal order with statuses
> we send the request to FazerCards

Similar project: Рефаткоринг приложения
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  • Rating 361

Budget: 2000 UAH Deadline: 5 days

I figured out the scheme - it's clear that GGSEL sends a webhook to the server after payment, the server contacts FazerCards, purchases the card, and sends its data to the buyer. I will implement this entire chain.
I will accept the webhook from GGSEL and verify that it is genuine (not someone spoofing the request). Then the server will go to FazerCards, buy the required card, and send the data to the buyer.

I will also think separately about what to do if something goes wrong - if the card is out of stock, FazerCards does not respond, or the payment for the product went through but the card could not be purchased. In this case, the client should not be left without a card and without money, so it is important to immediately lay down proper handling of such situations.

I will also protect against duplicates so that one webhook does not accidentally cause a double purchase of the card, and I will log all operations so that it is always possible to see what happened with a specific order.

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  • Rating 226

Budget: 8000 UAH Deadline: 3 days

Hello!

I will do it in 3 days. I divided it into two blocks so you only pay for what is needed now.

Now (included in the rate):
End-to-end auto-issue according to your scheme: webhook GGSEL → order in FazerCards → code to the buyer. Plus product mapping, protection against duplicate purchases when retrying the webhook, issuance log in the database, alerts in Telegram in case of failure, deployment, and testing on a real purchase.

Later (separately, only if needed):
Buffer of pre-purchased codes and price control. This will be needed when the volume increases: if FazerCards is unavailable at the time of sale, the buyer is left without a card, and you have a dispute. The buffer removes this dependency. I am not pushing this now — at the start, it would be an overpayment.

  • Projects 136
  • Rating 5.0
  • Rating 11 853

Budget: 6000 UAH Deadline: 2 days

Good day, I specialize in integrating various APIs and automating processes.

I am ready to implement a connection between GGSEL and FazerCards for you. We will set up the reception of requests from GGSEL, automatic purchase of a gift card through the FazerCards API, and instant sending of data to the buyer. I will do everything reliably, using Laravel, so that the system works stably and without failures.

Please let me know if you already have a server (VPS) for hosting this script, or if we need to select and configure one from scratch?

Let's discuss the details, and then I will provide the cost and timelines, okay? 🙂

Best regards, Denis

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  • Rating 494

Budget: 700 UAH Deadline: 3 days

Hello!
I am ready to implement a turnkey automated sales system. I have experience working with marketplace APIs and integrating payment/digital gateways, so the architecture will work like clockwork without delays or loss of orders.
How I will implement this project:
Server part (Backend): I will write a lightweight and fast server (we will choose the optimal one for your current hosting in Node.js/Python or PHP).
Integration with GGSEL (Incoming flow): I will set up a Webhook handler. As soon as a customer pays for a product on GGSEL, the marketplace instantly sends a notification to our server with all the order details.
Integration with FazerCards (Outgoing flow): The server "on the fly" parses data from GGSEL, authenticates with the FazerCards API, checks the balance, and sends a request to purchase the required gift card. Product delivery: The code/card number received from FazerCards is validated by the server and sent to the client via the GGSEL API (or directly to the buyer, depending on the marketplace settings).

Vadym S.

Vadym S.

Winning proposal
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  • Projects -
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  • Rating 440

Budget: 1000 UAH Deadline: 2 days

Hello, Ilya!

I am ready to implement the auto-sale according to the described scheme: the server receives a webhook from GGSEL → sends a request to FazerCards to purchase a card → receives a response → sends the card number to the buyer.

Stack: Python + asyncio/aiohttp for asynchronous reception of webhooks and requests to external APIs, basic operation logging to check the sales history.

A couple of clarifying questions before starting:
1. Is there already documentation and test access to the GGSEL and FazerCards APIs?
2. Where exactly should the card number be sent to the buyer — through the GGSEL response, a separate request to GGSEL, or another way?
3. How many orders per day are expected at the start?

  • Projects 15
  • Rating 5.0
  • Rating 8 186

Budget: 3500 UAH Deadline: 2 days

Hello, Ilya!

I am Nina, representing the IT team Valflow. Our lead engineer Valentin has extensive experience in automating e-commerce processes, developing API integrations, webhook handlers, and building auto-sale services in Python (FastAPI / Asyncio).

Here’s how we will implement the auto-sale system for cards:

1. Receiving and validating webhooks from GGSEL:
We will set up a fast webhook server that instantly receives purchase requests, checks the signature/security of the request, and parses the necessary order data.

2. Integration with FazerCards API:

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  • Rating 313

Budget: 2000 UAH Deadline: 3 days

Hello, Ilya! I have reviewed your task regarding the API integration of GGSEL and FazerCards. I am ready to implement this automated sales system in Python quickly, reliably, and turnkey.

I am a developer specializing in asynchronous automation, working with APIs, and backend logic (Python, asyncio, FastAPI/Flask). I have a clear understanding of how to set up stable webhook and HTTP request exchanges between different platforms without delays and data loss.

I will implement your project according to the following technical plan:
1. Development of server logic: I will create a fast asynchronous server in Python that will instantly accept incoming requests (webhooks) from GGSEL about purchases.
2. Integration with FazerCards API: I will configure the correct sending of requests for redeeming gift cards, processing service responses, and logging transaction statuses.
3. Automatic delivery: I will implement instant messaging to the buyer with the card number immediately after a successful response from FazerCards.
4. Local logging (SQLite): I will set up a lightweight database to record all operations so you can always check the sales history and rule out technical failures.

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  • Rating 266

Budget: 1000 UAH Deadline: 1 day

Hello!

⚪ 1,000 UAH — Minimum
✔ Receiving webhook from GGSEL.
✔ Request to FazerCards API.
✔ Obtaining the card and passing it to the buyer.
✔ Checking the main purchase scenario.
🟢 3,000 UAH — Standard
✔ Everything from the previous package.
✔ Checking the webhook signature.

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  • Rating 196

Budget: 25000 UAH Deadline: 7 days

We already have a nearly ready scheme for such auto-sales through a server layer and external APIs - it can be quickly adapted for GGSEL and FazerCards and launched.
In touch ))

The timeline is 5-7 days after receiving access and API documentation.
Estimate - from 25,000 UAH for a working integration with order processing, error handling, and logging.

For implementation, I would create a separate server module - it receives a request from GGSEL, checks the order, creates a purchase in FazerCards, saves the result, and returns the card number and operation status to the buyer.
It is also important to add retries for temporary API errors, an operation log, and protection against reissuing a card for the same order.

Access to the GGSEL and FazerCards APIs will be needed, examples of requests, a test product, and a rule for where exactly to send the card number to the buyer.

  • Projects 10
  • Rating 5.0
  • Rating 1 767

Budget: 1000 UAH Deadline: 1 day

Hello. Developing such a system requires an architectural approach with an emphasis on secure processing of incoming webhooks, reliable integration with external payment gateways, and asynchronous transaction processing to ensure stability. I will apply patterns for guaranteed message delivery and implement idempotency mechanisms to avoid duplicate operations. I have experience implementing similar solutions with third-party API integrations and already developed templates for building fault-tolerant systems, which will significantly accelerate the development phase. I suggest discussing all implementation details, final budget, and timelines in private messages.

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