
In Progress
Posted
Paid on delivery
SingleComm to HubSpot Integration 1. Project Objective Build a connection between SingleComm (Call Center Cloud System) and Hubspot via a middleware connector that receives a webhook from SingleComm upon call completion and creates an associated Call Engagement in HubSpot. 2. Middleware piece must handle the lead lookup logic. It cannot push "orphaned" call logs and expect HubSpot to link them later. 3. Workflow Architecture: Trigger: SingleComm POSTs a JSON webhook to the middleware endpoint. 3.1. Lookup: Middleware searches HubSpot CRM for a Contact matching the caller_id. 3.2. Creation: * If a Contact is found: Create a Call Engagement associated with that contact_id. 3.3. If NO Contact is found: (Optional) Create a new Contact first, then associate the call. 3.4. Logging: Middleware should log successes/failures for troubleshooting. 4. API & Endpoint Specs A. HubSpot Authentication: Method: Private App Access Token (OAuth 2.0). Scopes Required: [login to view URL], crm.objects.calls.write. B. Step 1: Search Contact (POST) Endpoint: [login to view URL] Logic: Filter by phone using the EQ operator. Data Normalization: Middleware must normalize phone numbers (e.g., stripping +1 or dashes) to ensure a match. (E.164) C. Step 2: Create & Associate Call (POST) Endpoint: [login to view URL] Association ID: Must use associationTypeId: 194 (Contact to Call). Required Properties: hs_call_title: String hs_call_status: (COMPLETED, BUSY, etc.) hs_call_duration: (Integer in milliseconds) hs_timestamp: (Epoch milliseconds) hs_call_body: (Agent notes or call metadata) 5. Developer Deliverables Environment: Node.js, Python, or an iPaaS platform (Make/Zapier). Error Handling: Implementation of a retry mechanism for 429 (Rate Limit) or 5xx errors. Documentation: Mapping table showing which SingleComm variables map to which HubSpot Call properties. 6. Success Criteria A call placed in SingleComm results in a Call Log appearing on the Calls Table in Hubspot and the corresponding Lead/Contact in HubSpot within 3 seconds of the call start.
Project ID: 40370343
140 proposals
Remote project
Active 7 days ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs

How will the middleware handle call logs to ensure seamless integration with HubSpot? Will it be able to create new contacts if needed? Hey, I have extensive experience in API integrations and middleware development, making me well-equipped for this project. - Proven track record of successful API integrations - Strong expertise in Node.js and Python - Skilled in error handling and documentation [login to view URL] My approach involves designing a robust middleware piece that efficiently handles lead lookup logic and creates call engagements in HubSpot seamlessly. I will ensure the normalization of phone numbers for accurate matching and implement error handling for seamless operation. Let's discuss how I can help you achieve a seamless SingleComm-HubSpot integration. Best, Diogo
$140 USD in 7 days
4.6
4.6
140 freelancers are bidding on average $281 USD for this job

Hi there, I reviewed your SingleComm-HubSpot integration project and this is exactly the kind of API work we handle regularly. I noticed you're connecting call data into HubSpot — that's a solid use case and we've built similar pipelines before with Python and Node.js. I have a couple of quick questions about your data flow and HubSpot object mapping. Let's chat through the details? I have delivered 1500+ web and mobile projects over 14+ years — happy to share relevant examples. Thanks, Hasan
$200 USD in 7 days
7.0
7.0

✅ Proposal for HubSpot-SingleComm API Integ With a strong background in API integration and CRM systems, I am ideally positioned to deliver the HubSpot-SingleComm integration. My experience includes extensive work with Node.js and Python, enabling efficient middleware creation that aligns with your project requirements. I have successfully implemented similar integrations, ensuring accurate data handling and normalization, crucial for the phone number lookup and contact creation in HubSpot. My approach includes robust error handling and comprehensive logging, aimed at achieving seamless data flow and immediate troubleshooting. I am ready to leverage my skills to ensure your call data integrates flawlessly within the stipulated 3-second window. Let’s connect to make this integration successful.
$187 USD in 6 days
6.6
6.6

Hello there, I have carefully reviewed your HubSpot SingleComm API Integration project and I am excited about the opportunity to collaborate with you. With over six years of experience in Python, Node.js and API integrations, I specialize in building reliable middleware solutions that sync data seamlessly across platforms. I am confident I can solve the challenge of linking SingleComm call events with HubSpot by ensuring accurate lookups, clean data normalization and fast processing. Here is my approach: Build a secure middleware endpoint to receive SingleComm webhook payloads Implement contact lookup logic with full phone normalization and create call engagements with proper associations I am available to start immediately and can deliver the complete middleware workflow within five days. Additional instructions or notes: Detailed logging for successes and failures Retry handling for API rate limits and 5xx responses Best regards, Jushua
$155 USD in 3 days
5.9
5.9

I can build a reliable SingleComm → HubSpot middleware that creates the Call Engagement only after matching the caller to the correct Contact, so nothing is orphaned in HubSpot. This project is a strong fit for me because I’ve built CRM and telephony integrations where phone normalization, association logic, and retry-safe API handling are critical. I’ll implement the exact HubSpot flow you outlined: receive the SingleComm webhook, normalize caller_id to E.164, search contacts, create/associate the call with associationTypeId 194, and log every success/failure for troubleshooting. Key strengths: - HubSpot API expertise: Private App auth, contact search, call creation, and association handling - Robust middleware design: retry logic for 429/5xx, idempotent processing, and clear error logs - Fast delivery: can work in Node.js or Python, with clean documentation and a field mapping table Relevant experience includes webhook-driven CRM automations, call logging workflows, and API integrations that require tight timing and accurate matching. I’ll make sure the implementation is production-ready and aligned with your 3-second success target. If you’d like, I can outline the exact endpoint flow and data mapping before starting.
$140 USD in 3 days
5.8
5.8

Hi, I have strong experience in Node.js, Python, HubSpot API integration, webhook processing, and middleware automation, building reliable connectors that normalize inbound data, perform CRM lookup logic, and create fully associated records without orphaned events. For this project, I would build a lightweight middleware service that receives the SingleComm webhook, normalizes the caller number into a consistent E.164-style format, searches HubSpot for the matching contact, creates the call engagement with the correct associationTypeId 194, and adds retry and logging layers so the sync stays fast, traceable, and reliable in production. You can expect clear communication, fast turnaround, and a high-quality result that fits seamlessly into your existing workflow. Best regards, Juan
$140 USD in 1 day
5.9
5.9

Hi there, I can finish fast i have paid HubSpot account And i already finish similar work before 4 days ago Please come to the chat box so we can easily discuss and then start , Thank You https://www.freelancer.com/projects/php/HubSpot-PhoneValidator-Testing/payments https://www.freelancer.com/projects/php/HubSpot-PhoneValidator-Testing-40366719/payments
$280 USD in 2 days
5.5
5.5

Hi there, I’ve read your HubSpot-SingleComm integration brief and I’m confident I can design a robust middleware connector that reliably links SingleComm call completions to HubSpot Call engagements within milliseconds. With hands-on experience building Node.js/Python APIs and integrating HubSpot private apps, I’ll implement a resilient flow that performs lead lookup, avoids orphaned logs, and logs every step for troubleshooting. What I’ll deliver: a middleware that receives the webhook, normalizes caller_id to E.164, searches HubSpot contacts by phone, creates a Call engagement if the contact exists, or creates the contact first (optional) before linking the call. I’ll include a retry mechanism for 429 and 5xx responses, and a mapping table documenting how SingleComm fields map to HubSpot Call properties (hs_call_title, hs_call_status, hs_call_duration, hs_timestamp, hs_call_body). The solution can run in Node.js, Python, or via Make/Zapier for quick deployment. Initial plan and timeline: I’ve shared an initial estimate based on your description, and once we go over a few technical details, I’ll confirm the exact cost and delivery schedule. After we align, I’ll deliver the endpoint logic, error handling, and documentation within the agreed window, then monitor and optimize for the 3-second success criterion. What is the preferred fallback behavior if SingleComm fires a webhook for a call where the lead cannot be found and you don’t want to create a new contact—should the
$75 USD in 3 days
5.5
5.5

Hey, I’ve carefully reviewed your project and understand you need a reliable middleware connector between SingleComm and HubSpot that processes call webhooks, performs accurate contact lookup, and creates properly associated call engagements in real time. The key focus is preventing orphaned records, ensuring fast processing, and maintaining clean, traceable data flow. I can build this using Python or Node.js with a lightweight API endpoint that receives the webhook, normalizes phone numbers to E.164, and performs a contact search via HubSpot API. Based on the result, the system will either associate the call with an existing contact or optionally create a new one before logging the call using the correct associationTypeId. I’ll ensure all required properties like duration, timestamp, and call status are mapped accurately from SingleComm payloads. The middleware will include structured logging, retry handling for rate limits and API failures, and optimized execution to meet your near real-time requirement. You’ll receive clean code, a mapping document for all fields, and setup instructions for deployment. Let’s connect so I can review your webhook payload and finalize implementation details. Best regards, Muhammad Adil Portfolio: https://www.freelancer.com/u/webmasters486
$120 USD in 3 days
5.1
5.1

Hi, hope you are well. I’ve carefully reviewed your requirements, and this is essentially the same type of project I completed two months ago. I am a skilled freelancer with 6+ years of experience in Python, Node.js, Software Development and I can deliver the results as quickly as possible. Please visit my profile to check the latest work and honest client reviews. Let us make this great together, please connect in chat. Warm regards.
$120 USD in 7 days
5.2
5.2

With over 10 years of experience as a developer, I have developed a deep expertise in Node.js and Python - precisely the skills you require for this project. I am comfortable working with webhooks and REST APIs, and have created numerous data integrations involving ERP, CRMs, and call center systems. Thus, your project aligns perfectly with my skills and experience. I understand the pivotal role that hubSpot plays in your enterprise's relationship management and believe in going above and beyond for my clients' needs. In this regard, to ensure no "orphaned" logs slip through the cracks, I will diligently develop the middleware to navigate contact synchronization effectively and as per the provided logic. Over time, my process has evolved to deliver high-quality code to strict deadlines. Enhancing error handling with retry mechanisms is something I already employ in my current projects to minimize disruptions due to rate limiting or server issues. To have a deeper understanding of system behavior, I promise to meticulously log success and failure events for easy troubleshooting within the call center information flow. Furthermore, I vow transparent service by providing you well-documented mapping tables for any future reference or extension of this integration project.
$140 USD in 2 days
5.4
5.4

Hi I have expertise in Hubspot Setup, can create custom objects,fields,columns,formulas,tasks,email, activity notes, reports and dashboards, import and export of data .workflows to automate fields update,send email,create task, integration with various external systems like pinchapi rapid api stripe xero practice manager DocuSign onedrive gdrive Gmail stripe. I have set-up Hubspot from scratch for clients. Kindly review my profile and ping me on chat to discuss further. Regards Ritu
$250 USD in 7 days
5.1
5.1

Greetings, I can see that you need a seamless integration between SingleComm and HubSpot to ensure that call data is accurately logged as Call Engagements after each call. My approach would involve creating a middleware that processes the webhook from SingleComm, looks up the caller's information in HubSpot, and then either associates the call with an existing contact or creates a new one if necessary. I have experience with both Node.js and Python, which are perfect for building the middleware you need. I’ll also ensure that phone numbers are normalized for accurate matching and implement robust error handling for any API issues. With my focus on clear documentation, you’ll have everything mapped out for easy reference. Best regards, Saba Ehsan
$150 USD in 4 days
5.2
5.2

✋ Hi There!!! ✋ The Goal of the project:- Build a secure middleware integration between SingleComm and HubSpot to automate call logging, contact matching, and real time CRM synchronization. I carefully reviewed your requirement for a webhook based middleware that receives SingleComm call data, performs contact lookup in HubSpot, creates call engagements, and ensures proper association with contacts using reliable API workflows. I am the best fit because I have strong experience building robust API integrations with CRM systems and real time data synchronization. 1. Middleware development using Node.js or Python with webhook handling and HubSpot API integration 2. Contact lookup logic with phone normalization and proper association of call records in HubSpot 3. Error handling with retry mechanisms for rate limits and logging for monitoring and debugging I provide API development, database handling, testing, deployment support, and full source code delivery with documentation and mapping tables. With 9+ years experience as a full stack developer, I have built similar CRM integrations and webhook based automation systems. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
$111 USD in 11 days
4.9
4.9

Hello, your need for a middleware that catches SingleComm’s call-completion webhook and produces a properly associated HubSpot Call Engagement is clear, especially the requirement to avoid orphaned logs. I’ve built two similar integrations where I normalized inbound telephony data, performed HubSpot contact search, and ensured calls landed in the CRM within seconds. In this workflow, the real risk is inconsistent caller ID formatting. Without precise E.164 normalization, HubSpot will return zero results, causing unnecessary contact creation or failed associations. Handling rate limits on HubSpot’s API is another point that needs a controlled retry strategy. I will implement a lightweight Node.js middleware that receives the webhook, normalizes phone formats, searches contacts through the crm/v3/objects/contacts/search endpoint, and creates the call engagement using associationTypeId 194. I’ll log all requests/responses and add structured error handling for 429/5xx signals. I can deliver a clean architecture with documented mappings and a test endpoint within 3-4 days. Best regards, John allen.
$155 USD in 1 day
4.6
4.6

As someone who has been in the software development industry for over 14 years, I can assure you that I'm the right person to handle your SingleComm-HubSpot API integration project. My expertise lies in the key technologies needed for this task namely: Node.js and Python. Additionally, with my deep understanding of API development and integration, I guarantee a seamless connection between SingleComm and HubSpot. In order to ensure data accuracy and avoid "orphaned" call logs, I understand the need for strong lead lookup logic which I will actively implement in this project.
$140 USD in 7 days
4.7
4.7

Hi there, I will build a middleware that receives SingleComm webhooks, normalizes phone to E.164, looks up HubSpot Contacts and creates a Call engagement linked to the contact , my background in API integrations and HubSpot + production deployments makes me the right fit. - Build webhook endpoint (Node.js or Python) to receive SingleComm POSTs and normalize phone numbers (E.164) - Search HubSpot contacts (crm/v3/objects/contacts/search) and create Call (crm/v3/objects/calls) using associationTypeId: 194 - Optional: create Contact when no match, then create associated Call; include mapping table from SingleComm fields → HubSpot properties - Implement retry for 429/5xx, logging, and staged deploy with rollback and post-fix validation to ensure minimal downtime Skills: ✅ HubSpot ✅ Node.js / Python ✅ API Integration / webhook handling ✅ Middleware deployment / hosting (VPS, Docker) ✅ Rate-limit retry, logging, data normalization (E.164) Certificates: ✅ Microsoft® Certified: MCSA | MCSE | MCT ✅ cPanel® & WHM Certified CWSA-2 I’m available to start immediately. Which runtime do you prefer (Node.js or Python), and can you provide a sample SingleComm webhook payload plus confirmation whether you want the middleware to auto-create Contacts when none are found? Thanks,
$150 USD in 1 day
4.5
4.5

As an experienced Full-Stack Developer with expertise in Node.js and Python, I'm confident in my ability to create the ideal connection between SingleComm and HubSpot for your organization. The robust architecture I will design will not only facilitate call log appearance on the Calls Table but also ensure a seamless linking with corresponding Lead/Contact in HubSpot within just 3 seconds of call initiation. My past projects testify to my proficiency in handling middleware connectivities with various APIs, making me a natural fit for this job. I can deploy not only Node.js and Python-based solutions but also build the required middleware according to your preferences, be it on Make/Zapier or any other iPaaS platform. Throughout the project, I'll focus on error-handling by implementing a well-thought-out mechanism for rate limit errors and ensuring timely request retries. Additionally, my thorough documentation will provide a clear map of SingleComm variables to corresponding HubSpot Call properties; saving valuable time for any future integrations or troubleshooting. Overall, by choosing me for this project, you'd benefit from my consistent communication, clean + testable code, and my knack for finding smarter technical solutions that save time and money. I've built numerous front-to-back web applications. Now, let's start building which runs your business smoothly!
$140 USD in 7 days
4.4
4.4

Hello, I am Vishal Maharaj, with 20 years of experience in Python, Software Development, API Integration, and Node.js. I have carefully reviewed the requirements for the SingleComm to HubSpot API Integration project. To achieve the project objectives, I propose creating a middleware connector that will receive webhooks from SingleComm, search for matching contacts in HubSpot CRM, and create associated Call Engagements. The middleware will handle lead lookup logic and ensure proper data normalization for phone numbers. I will use Node.js or Python for development and implement error handling with a retry mechanism for 429 or 5xx errors. Kindly initiate a chat to discuss this project further. Cheers, Vishal Maharaj
$250 USD in 5 days
5.3
5.3

With over a decade of experience as a software developer, I am well-equipped with the Node.js and Python knowledge needed to build your desired middleware connector. I have successfully integrated numerous APIs in the past, making me confident that I can empower your SingleComm-HubSpot integration to its full extent. My grasp on endpoint logic along with phone number data normalization will ensure accurate and quick search results on HubSpot CRM. Furthermore, having worked extensively with both Flutter and React Native, I understand the significance of efficient data handling. This proficiency directly translates into minimizing the occurrence of orphaned call logs by incorporating comprehensive lead lookup logic within your middleware piece - without relying on any later linking mechanism. Additionally, as an AI engineer, I bring innovative automation ideas to the table which can expedite error handling through smart retry processes. Lastly, as an AI/LLM specialist, I confidently claim my ability to fine-tune existing systems. I'm committed to ensuring that your SingleComm-HubSpot integration yields instant and accurate results- evidenced by calls appearing on Hubspot's Calls Table within 3 seconds of call start. My approach involves robustly documenting mapping variables for trouble-free future troubleshooting - something which will prove invaluable for this project. Schedule a meeting and let's discuss how my skill set can serve your vision better! Thanks, Jay
$140 USD in 7 days
4.3
4.3

Hi there, Strong alignment with this project comes from experience building middleware integrations between third-party systems and CRMs with reliable webhook processing and data mapping. Clear understanding of the requirement to capture SingleComm webhooks, perform contact lookup in HubSpot, create call engagements, and ensure proper association with normalized data. Hands-on expertise with Node.js, Python, and REST APIs ensures secure authentication, efficient processing, retry logic, and structured logging. Risk is minimized by handling rate limits, validating data formats, ensuring accurate associations, and delivering clear documentation for maintenance. Available to start immediately happy to share a quick demo or discuss next steps. Recent work: https://www.freelancer.com/u/chiragardeshna Regards Chirag
$140 USD in 7 days
4.4
4.4

Wilmington, United States
Payment method verified
Member since Mar 8, 2013
$30-250 USD
$250-750 USD
$10-30 USD
$250-750 USD
$250-750 USD
₹12500-37500 INR
$3000-5000 USD
$5000-10000 USD
$30-250 USD
₹12500-37500 INR
$250-750 USD
₹1500-12500 INR
€12-18 EUR / hour
$10-200 USD
$10-30 USD
$3000-5000 USD
$30-250 USD
₹750-1250 INR / hour
₹1500-3000 INR
$750-1500 SGD
₹400-750 INR / hour
₹1500-12500 INR
₹600-1500 INR
$25-50 USD / hour
₹10000-13000 INR