Integration of ChoiceQR → KeyCRM via API

Budget: 1500 UAH Deadline: 2 days

Good day.
I previously worked with the SalesDrive API, and to check for duplicates, I suggest implementing a simple database, for example, Redis with a lifespan of each record being 24 hours. I will handle logging with Winston, and all files will be stored and archived at a specified time. I propose implementation on NestJS, which has a modular architecture, so it will be easy to add new functionality later.
I look forward to collaborating!

Budget: 2500 UAH Deadline: 4 days

Good day! I will create an integration from ChoiceQR to KeyCRM as a separate service in Python: a new order from the website will be immediately created in KeyCRM with all the fields from the list (client, phone, address and delivery method, date and time, products with quantity and price, total amount, comment, payment method, source).

I protect against duplicates with idempotency: I store the order id from the ChoiceQR side and check before creation whether it has already been entered. A repeated call for the second order will not generate a new one. I log errors along with the request body and KeyCRM response, so it is clear what exactly failed, plus automatic retries for failed submissions.

I will place the field mapping in the configuration, not hard-coded in the code. Therefore, the second stage (order statuses and other fields) can be added without rewriting, I will lay this out from the start.

A question regarding the essence: does ChoiceQR deliver new orders via webhook, or is it only available through scheduled API polling? This will determine whether the transmission will be instantaneous or with an interval of a couple of minutes.

The price is 2500 UAH, the deadline is 4 days from the moment of receiving access. I am taking it at the starting price because I am gathering my first reviews on Freelancehunt. I have live bots and integrations, ready to show them in the chat for you to review before making a decision.

Petro Pankov, BotCraft Group Expand

Budget: 4500 UAH Deadline: 3 days

Hello.

I can set up the integration for you. I have experience with KeyCRM. Write to me, and we will discuss.

Budget: 8500 UAH Deadline: 4 days

Good day, I have over 5 years of experience in development, often implementing API integrations for ecommerce and services.

In a client project, I migrated a WordPress site for a dental clinic from one hosting to another, adding fields and settings for convenient order management.

I am implementing the transfer of orders from ChoiceQR to KeyCRM via API, taking into account error logging and a mechanism for excluding duplicates. I can create a flexible structure for future status additions and functionality expansion.

I estimate 4-6 days for the completed integration. I will provide the exact cost after a few clarifications or in private messages.

I have attached a sample of my work, please take a look.

What log storage system do we plan to choose: files or a database?

Feel free to reach out! Expand

Budget: 9000 UAH Deadline: 7 days

Hello, I recently created a similar integration flow for an online store: automatic order creation in an external system via API, transferring customer, phone, address, products, amounts, and payment method. Duplicate protection and error logging were part of the same project, and I connected the Telegram integration as a separate module.

If you have a lot of orders during peak times, it's worth setting up a queue with retries on the API KeyCRM right away, as this eliminates lost orders during timeouts by about 10-15%.

How many orders do you expect per day at the start, and does ChoiceQR provide a webhook for new orders, or do we need to poll their API on a schedule?

I suggest we get in touch; I will also draft an integration scheme with field mapping and a block for future status transmission.

Budget: 4500 UAH Deadline: 3 days

Hello, Anatoly!

I am Nina from the IT team at Valflow. Our backend developer Valentin specializes in API integrations and business process automation (Python / FastAPI / PHP / PostgreSQL).

We are ready to quickly and reliably connect ChoiceQR with KeyCRM:

1. Integration & Data Transfer:
• Setting up webhook reception (or regular API polling) from ChoiceQR upon order creation.
• Mapping and transferring all fields to KeyCRM: client, contacts, address, time, items, amount, comments, payment type, and source tag.

2. Security & Scalability:
• Deduplication: checking the ChoiceQR order ID before creating it in KeyCRM to avoid duplicates.
• Logging & Error Handling: recording all requests/failures in a log for monitoring submissions.
• Modular architecture: clean code for easy integration of bidirectional status synchronization in the future.

Examples of our integrations and projects:
https://valflow.dev/

Conditions for execution (First stage):
• Cost: 4,500 UAH
• Deadline: 3 days

We are ready to study the API documentation and start working immediately! Expand

Budget: 5000 UAH Deadline: 3 days

Good day! I have extensive experience working with APIs and process automation, specifically implementing complex integrations for the automotive business and data parsing. I will quickly set up the order transfer from ChoiceQR to KeyCRM, ensuring correct data processing and stable webhook operation. I am ready to start work immediately after receiving the documentation.

Budget: 3000 UAH Deadline: 5 days

Hello!
I understand that you need a reliable integration of ChoiceQR with KeyCRM for automatic order synchronization. I have experience with API integrations of domestic and international services, including real projects involving order processing and CRM systems. My approach: I will create a webhook handler for ChoiceQR, write API clients for both systems with full data validation, implement deduplication of orders through unique identifiers and order numbers, and set up detailed error logging with context for debugging. The architecture will be modular — with separate layers for data transformation and business logic, so you can easily add status synchronization in future phases. Everything will be ready for self-deployment with clear documentation. One clarifying point: how do you plan to transmit data — through ChoiceQR webhooks or periodic API polling?

Budget: 2500 UAH Deadline: 1 day

Hello! I can develop an automatic transfer of new orders from your two systems. Please message me privately to discuss more detailed information for the development. I would be happy to collaborate!

Budget: 7000 UAH Deadline: 6 days

I can implement automatic order transfer from ChoiceQR to KeyCRM via API: after placing an order, a new order will be correctly created in the CRM with all the necessary data.

I work carefully: first, I will check the structure of the fields and the format of the requests, then I will set up the transfer, error logic, and the possibility of expansion for additional statuses or fields in the future. If you already have API documentation and access, I can quickly start and create a working version without unnecessary approvals.

Budget: 3000 UAH Deadline: 5 days

Good day, I am ready to help, I had a similar experience, let's discuss.

Budget: 5000 UAH Deadline: 10 days

I propose to implement integration between ChoiceQR and KeyCRM via API. The first stage includes the automatic creation of orders in KeyCRM with all necessary data, such as the client's name, phone number, delivery address, and others. I will ensure error logging and avoidance of duplicate orders. Testing will be conducted to verify the results of order creation in KeyCRM. What data do you need to provide to get started?

Budget: 4000 UAH Deadline: 4 days

Anatoliy, I am ready to implement the automatic transfer of new orders from ChoiceQR to KeyCRM via API.

I work with Python, API integrations, business process automation, and data synchronization between different systems.

I propose to build the implementation as a separate small synchronization service:

1. Receiving a new order from ChoiceQR via webhook or controlled polling of the API, depending on the system's capabilities.
2. Checking and normalizing the received data.
3. Transmitting the client, phone, address, delivery, time, products, quantity, prices, total amount, comment, and payment method to KeyCRM.
4. Creating a separate source for ChoiceQR in KeyCRM.
5. Protection against the duplicate creation of a single order by external identifier.
6. Logging successful operations and errors.
7. Retry attempts for transmission if KeyCRM temporarily does not respond.
8. Modular structure, to which synchronization of statuses and other functions can be added in the future.

After receiving the documentation, test accesses, and an example of a real order, I will first check the data structure of both APIs and prepare a field mapping table.

Within the first day, I will show a test transfer of one order or inform about any identified API limitations.

As a result, I will provide:

• the source code of the integration;

• settings for connecting API keys;

• a mechanism for duplicate protection;

• an error log;

• a brief instruction for launching and maintenance;

• assistance with deployment on the client's server.

The cost of the first stage: 4,000 UAH.

Deadline: up to 4 working days after receiving access.

Please let me know if ChoiceQR supports webhook for new orders, where the integration is planned to be placed, and if there is a stable SKU or another unique identifier for the products? Expand

Budget: 3900 UAH Deadline: 4 days

Good day.
I am implementing a separate service that will receive a new order from ChoiceQR, normalize the data, and create it in KeyCRM. I will pass the client, phone, address, and delivery method, date and time, products with quantities and prices, total amount, comment, payment method, and source.
For each order, an external ID and processing status will be stored. A repeated event will not create a duplicate, and in case of a timeout or error, a controlled retry will be executed. I will separate the field mapping so that later I can add status transmission without rewriting the main logic.
I would like to clarify one point: does ChoiceQR already send you a webhook for a new order, or do you need to periodically poll the API?

Budget: 15000 UAH Deadline: 5 days

Good day, feel free to reach out. I have experience with the API KeyCRM. I quickly looked at the API ChoiceQR, they have webhooks, which is very convenient. I will implement it on Python/FastAPI and deploy it on the server. To avoid duplicates and manage the load (if there are many orders), it is better to build order processing through a queue. Logs can be sent to Telegram or displayed in another convenient way.

Budget: 1000 UAH Deadline: 1 day

The key point here is deduplication: ChoiceQR can send repeated webhooks during an unstable connection, so idempotency needs to be built in right at the level of storing the external order ID, rather than checking for "similar orders." I will design the architecture so that statuses and other extensions can be added without rewriting the core. Approximately 1-2 days for full integration. One question: Is ChoiceQR already set up for webhooks, or is it currently only polling through the API?

Budget: 4000 UAH Deadline: 4 days

Hello. My name is Volodymyr, I am a Python developer and the founder of the engineering agency Vaysed. I have thoroughly reviewed your task regarding the implementation of automatic transfer of new orders from ChoiceQR to KeyCRM. I understand that the key aspects are reliable parsing of all order fields, exclusion of duplicates, detailed logging, and scalability of the system for future status updates. To address this task, I propose to develop an isolated microservice based on Python and the FastAPI framework, which will act as a layer between the APIs of both systems. For reliable log storage and data processing, I will use PostgreSQL, and for instant verification of order identifiers and protection against duplicates, I will connect Redis. The service will be designed modularly, allowing for easy addition of webhooks for two-way status synchronization in the future. All code will be packaged in a Docker container for quick and secure deployment on your server. I have relevant experience in developing complex integrations and configuring CRMs. For example, while creating the architecture for the PAYBACK CARTEL platform, I successfully implemented a seamless webhook processing system from payment systems with subsequent data synchronization, and in the Lumos project, I set up stable routing of information streams. You can view my portfolio at the link Freelancehunt. I suggest discussing the details of API access and technical nuances in private messages.

Budget: 3500 UAH Deadline: 5 days

You need each new order from ChoiceQR to automatically appear in KeyCRM without manual transfer and without duplicates. I will take care of this. I will set up the transfer via API for both systems: client name, phone, address and delivery method, date and time, list of products with quantity and price, total amount, comment, payment method, and order source. I will add protection against duplicates using a unique order key and error logging so you can see where something went wrong. I will make the code modular, so later it will be possible to add status transfers without reworking. I work with Python, CRM integrations via API, and business automation. Please send the documentation and access, we will agree on the details, and I will start.

Budget: 3000 UAH Deadline: 2 days

Hello! I am ready to complete the project turnkey. I guarantee quality and promptness of work.

Feel free to write, I will be happy to collaborate!

Budget: 3000 UAH Deadline: 3 days

Hello! This task is a perfect fit for my profile. I have practical experience working with the API KeyCRM (I have previously set up custom integrations and order synchronization for it), so I clearly understand its data structure. For your task, I propose to write a reliable microservice in Python (FastAPI). The logic will be as follows: the script receives a webhook from ChoiceQR about a new order, parses all necessary fields (from name and address to the list of products), and forms a correct POST request to KeyCRM. To avoid duplicates, I will use a lightweight database (for example, SQLite), where the IDs of already processed transactions will be stored. Detailed logging of all events and errors will also be set up for convenient monitoring. The architecture will be modular, so in the future, you will be able to easily expand the functionality (for example, add status updates). I am ready to review the ChoiceQR documentation and discuss the details. We can start working.

Budget: 3000 UAH Deadline: 3 days

I am happy to implement the integration of ChoiceQR and KeyCRM using Python scripts, ensuring the transfer of all necessary data, avoiding duplicates, and logging errors. I will develop a flexible solution that will allow for easy expansion of functionality in the future.
Write to me, and we will discuss everything in detail, and I can start working immediately.

Portfolio: Freelancehunt
Reviews: Freelancehunt

Budget: 5400 UAH Deadline: 3 days

Hello! I am Serhiy, I have 8 years of experience in IT with various technologies: web/mobile, backend, API, integrations, automation, and data handling.
I see the main task as follows: Integration of ChoiceQR → KeyCRM via API. It is necessary to implement the automatic transfer of new orders from ChoiceQR to KeyCRM. Both systems have an open API....

Skills for the task:
- task analysis and quick clarification of requirements
- backend/API and integrations
- web/mobile development

Portfolio: https://software.campstudio.net/#showcases

Budget: 5500 UAH Deadline: 3 days

I see that the first stage is a one-way transfer of orders from ChoiceQR to KeyCRM, with protection against duplicates and error logging. I did a similar automation for an online store: orders from the website went to the CRM, then to the manager in Telegram and in Google Docs, reducing processing time from 15 minutes to 1. One thing that needs to be understood before starting: can ChoiceQR send webhooks for new orders, or will it be necessary to periodically poll the API? This affects the architecture, so regardless, the result will be code that can easily be supplemented with status transfers later. After delivery, I will remain in touch for minor adjustments.

Budget: 5000 UAH Deadline: 2 days

Hello, I will do everything quickly and efficiently. With support after launch, I won't disappear anywhere =) I have worked with both APIs.

Budget: 18000 UAH Deadline: 7 days

Anatoliy, congratulations. The task is clear: a new order in ChoiceQR must end up in KeyCRM without human involvement, with a complete set of fields, without duplicates, and with an error log.

Here’s how I do it:

1. Event reception. If ChoiceQR supports webhooks, I’ll use them; it’s the fastest way. If not, I’ll set up polling on a schedule with a cursor based on the time of the last processed order to ensure nothing is missed during failures.

2. Queue and retries. Each order goes through a task queue. KeyCRM may respond with an error or timeout, and then the task is retried with a delayed interval instead of being lost. This is the main reason why such integrations usually break down after a month.

3. Duplicate protection. Idempotent key based on the ChoiceQR order ID. A repeated webhook, retry, or parallel processing will not create a second order in the CRM. Before creation, I additionally check for the presence of an external identifier.

4. Field mapping. Name, phone (normalized to E.164), address, delivery method and date/time, product list with quantity and price, total amount, comment, payment method, source from ChoiceQR. Products are matched with the KeyCRM nomenclature; for unmatched items, we configure behavior: create or write in the comment.

5. Logging. Each attempt with the request body and response, a separate list of failures with reasons, notifications in Telegram or by email if something fails after all retries. You see the failure immediately, not when the client calls.

6. Future-proofing. A structure with a separate layer of connectors, so adding reverse status transmission from KeyCRM to ChoiceQR or connecting another order source is a new small task, not a rewrite.

Experience: I have extensive experience with such integrations, particularly with KeyCRM: exchanging orders and statuses between external systems and CRM, webhooks, queues, idempotency, data normalization. Stack: Node/TypeScript or PHP, PostgreSQL, deployment on your server or a separate VPS.

Questions for accurate assessment:
- Are webhooks available in ChoiceQR or is it only read access via API?
- How many orders per day and is historical migration of existing ones needed?
- Are you also planning delivery and payment statuses in the second phase, or is it just creation for now?

I’m ready to start immediately after access is provided; I’ll deliver the first phase with a test run on real orders and show the log. Expand

Budget: 3000 UAH Deadline: 3 days

I have experience working with REST APIs and integrations for KeyCRM. I will set up a reliable script that will instantly transfer all order data, protect against duplicate creation, and write logs for error monitoring. I will make the code modular so that in the future you can easily add status synchronization.

Budget: 4000 UAH Deadline: 2 days

Good day, I have reviewed the specifications and am ready to proceed. A server/hosting will be needed for the integration script placement. The architecture will be designed with the possibility of easily expanding the fields for data transfer. I have repeatedly performed integration of KeyCRM with various services. I have over 10 years of experience, so I will deliver everything with high quality, and you will be satisfied with the result. Feel free to reach out, I will be happy to help.

Budget: 5500 UAH Deadline: 6 days

Good day! I am ready to implement the integration of ChoiceQR with KeyCRM via API. New orders will be automatically transmitted to KeyCRM with contact details, delivery, payment, products, amount, and comments. I will anticipate protection against duplicates, error logging, and a structure for further adding status synchronization. After receiving the documentation and test access, I will clarify the field correspondence and start working.

Budget: 1000 UAH Deadline: 1 day

Hello. I see the task regarding the automatic transfer of orders from ChoiceQR to KeyCRM and I am ready to execute it. For implementation, I propose developing a reliable integration service using API Gateway and asynchronous processing mechanisms, which will ensure high availability and fault tolerance of the system. The architecture of the solution will include idempotency to prevent order duplication, centralized logging of all operations and errors, as well as a clear structure for easy functionality expansion, such as status transmission. I have successful experience in developing similar integration projects and already have ready modules and templates for quick deployment and effective operation. I suggest discussing all implementation details, final budget, and timelines in private messages.

Budget: 7000 UAH Deadline: 7 days

Good day. I have experience with similar projects. I will develop an intermediary service on FastAPI that will receive via webhook from choiceqr:
ChoiceQR
│
│ Webhook (New Order)
▼
FastAPI
│
├── duplicate check
├── field transformation
├── order creation in KeyCRM
└── logging

Most likely, I will do it faster, but I indicate a longer term because times are like this.. Expand

Budget: 5500 UAH Deadline: 2 days

Good day! I will implement the transfer of orders from ChoiceQR to KeyCRM via API with duplicate protection and logging.

Budget: 5000 UAH Deadline: 3 days

Good afternoon, I am ready to take on the integration of ChoiceQ with KeyCRM, please contact me.

Budget: 6000 UAH Deadline: 3 days

I am a full-stack/integrator focused on API exchanges of orders and CRM frameworks for businesses.

Portfolio: https://gooru-lab.github.io/portfolio/
Similar cases: receiving external orders/invoices into accounting systems, idempotency without duplicates, error logs, extendable worker for future statuses.

According to your brief, the requirements are:
- new order from ChoiceQR → automatic creation in KeyCRM;
- fields: client, phone, address, delivery, date/time, products, quantity, prices, total, comment, payment, source ChoiceQR;
- no duplicates, with logs, with architecture for future statuses.

Phase 1 plan:
1) Access + mapping of fields from ChoiceQR → KeyCRM
2) Webhook or polling, create order, deduplication by order ID
3) Error logs, deployment, short instruction, test on 2–3 real orders

Estimated cost for Phase 1: 150 USD, 3–5 working days after docs and keys. The price includes a list of fields from the technical specification, anti-duplicates, logs, and setup for statuses. It does not include two-way synchronization of statuses and adjustments to ChoiceQR/KeyCRM themselves if the API field does not return.

Clarification: Does ChoiceQR provide a webhook for new orders, or should it be retrieved via API on a schedule? Expand

Budget: 11000 UAH Deadline: 3 days

The main risk of such integration is not the transmission itself, but duplicates and loss of orders during failures. Solution: an idempotent layer based on the external order ID, retries with delays, and logging of each step. Plan: 1) I will review the documentation for ChoiceQR and KeyCRM, agree on the data schema and error scenarios; 2) I will design the field mapping and anti-duplicate key; 3) I will implement order creation via API with limit handling and retries, plus error logging with notifications; 4) architecturally, I will lay the groundwork for status transmission — this will be a separate module, not changes in the code. I have already solved a similar task: integration of Allegro API -> CMS with anti-duplicates, OAuth, and rate limit handling — https://freelancehunt.com/showcase/work/razrabotka-parsera-sistemyi-avtomatizatsii-allegro/2039438.html What is the authorization scheme for KeyCRM and does ChoiceQR have webhooks or only polling?

Price: 11000 UAH
Deadline: 3 days

Budget: 5000 UAH Deadline: 2 days

Depending on what needs to be included in the order and what will be in the QR, the final deadlines will depend. My last work on integration with keyCRM is here https://www.premabrand.com.ua/ I indicated the approximate cost and price.

Budget: 3000 UAH Deadline: 2 days

Good day :)
I can complete the task, test
to ensure everything works as intended!

I am open to collaboration, feel free to write...

Budget: 4000 UAH Deadline: 1 day

Good day. I can do everything today or tomorrow. I will need access to your ChoiseQR and KeyCRM accounts.

Budget: 4500 UAH Deadline: 4 days

The task is clear and technically transparent. I am ready to implement a reliable integration for the automatic transfer of new orders from ChoiceQR to KeyCRM while meeting all requirements (complete list of fields, duplicate protection, logging, and groundwork for future two-way synchronization of statuses).

How I will structure the work:
API Analysis: I will study the documentation of both systems (ChoiceQR and KeyCRM) to set up instant data transfer via Webhook.

Integration Development: I will write a handler script that will accept order data, correctly map all fields (client, address, delivery, list of products with prices, comments, payment, and source "ChoiceQR").

Security and Logging: I will implement a check by order ID to exclude duplicates, as well as a logging system for errors in case of temporary failures on the CRM side.

Scalability: I will lay down a modular architecture so that in the second stage it will be easy to add the transfer of order statuses.

Testing: I will conduct a test run of an order from creation in ChoiceQR to successful appearance in KeyCRM.

I am ready to start work immediately after access is provided! Expand

Budget: 700 UAH Deadline: 4 days

Hello, I am in the TOP 10 freelancers on the platform, I have completed similar projects, I will do it quickly, efficiently, and at a low cost.

Budget: 4500 UAH Deadline: 2 days

Hello! I have extensive experience in system integration through REST API and Webhooks, including working with KeyCRM and order services.

How I will implement the task:
- Architecture and webhooks: I will set up a handler in PHP that receives events about new orders from ChoiceQR in real-time.
- Data mapping: I will ensure accurate transmission of all fields (contacts, cart contents, prices, delivery options, comments, source).
- Duplicate protection: I will implement a uniqueness check for the order by ID from ChoiceQR before creating it in KeyCRM.
- Logging and error handling: I will set up a detailed log for monitoring the transmission status and prompt notification in case of failures.
- Scalability: The architecture will be prepared for easy addition of reverse synchronization of statuses in the future.

Estimated cost: 4,500 UAH.
Deadline: 1-2 days.

I am ready to review the details and start the setup! Expand

Budget: 6000 UAH Deadline: 4 days

Ready to implement automatic order transfer from ChoiceQR to KeyCRM with the transfer of all necessary fields and error logging. I will include a check for duplicates and make the integration so that later it will be possible to add status transfers and expand functionality.

An important technical nuance: for reliable duplication avoidance, idempotency is required — an external order ID or checksum, so that repeated webhooks or repeated calls do not create new records.

Before starting, please clarify whether ChoiceQR can send webhooks upon order creation or if periodic API polling is needed. Also, indicate how you would like to identify the client in KeyCRM — by searching by phone/email or always creating a new contact.

Please send the documentation and test access for both systems and an example test order. After that, I will conduct a trial order creation and send a brief report with a log and questions if they arise.

Budget: 4500 UAH Deadline: 1 day

Hello. I have worked with choice qr in my establishment, I know how everything works from the inside. I even developed a small dashboard with specific statistics for myself. I would be happy to meet and implement everything in the best way!

Budget: 1800 UAH Deadline: 2 days

Good day, Anatoliy! I am Roman, and I have carefully reviewed your project for integrating ChoiceQR and KeyCRM via API. I fully understand the need for automatic order transmission, including the customer's name, products, and total amount, as it significantly optimizes business processes. My goal is to create a reliable solution that will automatically transfer all necessary data from ChoiceQR to KeyCRM, eliminating duplication and ensuring detailed error logging.

Budget: 10000 UAH Deadline: 5 days

Hello, I am ready to implement the integration of ChoiceQR with KeyCRM via API for the automatic creation of new orders. I have experience with backend integrations, CRM/API, webhook processing, and order transmission between systems. I envision the implementation as follows: we receive a new order from ChoiceQR, normalize the required fields, create the corresponding record in KeyCRM, and add error logging. I can do it in Python or PHP, depending on the current site infrastructure and ease of maintenance. After receiving the documentation and access, I will quickly clarify the fields for the first stage and prepare a working version for review. git: github.com/onyx144

Budget: 2000 UAH Deadline: 3 days

Hello, Anatoliy! The integration of ChoiceQR and KeyCRM is a great way to automate processes. I have already implemented similar synchronizations. It is important to set up a request queue through webhooks so that during order peaks, requests are not lost, and duplicates are filtered out at the validation stage of the id.

On which server or hosting do you plan to place the integration script?

I suggest we discuss the error handling scheme.

Budget: 27000 UAH Deadline: 14 days

I can implement automatic transfer of new orders from ChoiceQR to KeyCRM, taking into account the avoidance of duplicates and error logging, with the possibility of further expansion for status transfer. I will transfer all main order fields, customer contact details, items with quantities and prices, total amount, payment information, and source. A critically important nuance: for correct product matching and to avoid creating duplicates, a unique product identifier from ChoiceQR is needed, such as SKU or external_id. Please send the API documentation and test keys, as well as how you want to identify duplicates — by external_id of the order or by the rule phone+amount+time. After that, I will quickly let you know what additional fields will be needed for logging and test verification.

Budget: 5000 UAH Deadline: 2 days

Good day, I can do this without any problems! I have a lot of completed work with KeyCRM, I know their API like the back of my hand. Feel free to reach out - I work quickly and reliably.

Budget: 12000 UAH Deadline: 5 days

Good day!

For such integration, it is appropriate to create a separate synchronization service rather than writing a direct connection between the two systems. This way, the logic for receiving orders, mapping fields, creating records in KeyCRM, checking for duplicates, and logging errors will be separated, and in the future, it will be easy to add status transmission, retries, and other scenarios to the same core.

From a technical point of view, the key point here is idempotency. If ChoiceQR or the network layer re-delivers an event, the integration should not create a duplicate order in the CRM. To achieve this, we usually store the external order ID and record the processing status in our own synchronization table. It is also important to immediately determine whether ChoiceQR has webhooks; if not, it is better to implement controlled polling on a schedule with error reprocessing logic.

It is also worth verifying the data schema for products, delivery methods, and payments: discrepancies between the APIs of different systems most often arise in these fields. For stability, we usually establish an intermediate internal order format, and from there, we send data to KeyCRM. This simplifies maintenance and reduces the risk that a change in one API will break the entire integration.

As a guideline, the first stage of such a solution usually takes 5–10 working days after receiving the documentation, access, and a sample real order from both systems. A precise budget estimate can be accurately provided after reviewing the API, as the scope of work is heavily influenced by the method of receiving orders, the rules for mapping fields, and the requirements for logs and retries.

To finalize the architecture without unnecessary risks, three clarifications are needed: does ChoiceQR and KeyCRM have webhooks, or does the integration need to be built through API polling; can you provide a sample payload of one order from ChoiceQR and the requirements for creating an order in KeyCRM; where is the integration planned to be hosted — on your server or a separate hosting?

After this, we will be able to propose an exact implementation scheme for the first stage and agree on the scope of work without assumptions. Expand

Budget: 15000 UAH Deadline: 14 days

Good day
I have extensive experience in integration development
Write to me

Budget: 5000 UAH Deadline: 3 days

Hello! I will complete your task quickly and efficiently. I work with KeyCrm.

My recent works:
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My portfolio: https://freelancehunt.com/ua/freelancer/romas6ka.html#portfolio
Message me, I will start working today. I will be happy to collaborate with you! Expand

Budget: 4500 UAH Deadline: 4 days

Anatoliy, I see the task as setting up a stable bridge for synchronizing orders between ChoiceQR and KeyCRM. The key here is the correct mapping of fields and protection against duplicates by checking the unique order identifier with each request.

I will implement a script that will process incoming data, automatically create an order card in the CRM, and log errors to a log file for quick resolution if the API responds with an error. The architecture will be modular, allowing for easy expansion of functionality with statuses or other data in the future.

Will you provide the API documentation for both services so that I can immediately assess the structure of the incoming data for mapping?