Exhibition software & Support

@Microlent

Hi, I can help with the CRM integration and keep the implementation small, clean, and easy to maintain. I have worked with REST API based integrations where applications sync data with CRM systems using OAuth authentication, webhooks, and scheduled sync processes. Once the CRM is confirmed (Salesforce, HubSpot, Zoho, or similar), I will map the required fields and build a reliable sync layer so contacts, deals, and any required custom objects flow between the systems without duplicates. The integration will include proper error handling, rate limit handling, and logging so any issues can be traced easily. I can also add webhook based updates where possible so data updates stay within the required time window. You will receive the integration code along with a short setup and rollback guide. I will also provide a small test script or Postman collection showing the API calls used for syncing. After deployment I can stay available for a couple of weeks to handle any small fixes or questions. If you can share which language your application backend uses and which CRM you are planning to connect, I can review the APIs and outline the best approach. Thanks Athar

@webperfection123

Hi, Which CRM are you looking to connect with your application? I can help create a seamless integration between your app and a mainstream CRM like Salesforce or HubSpot. With 8+ years of experience in software integration and a strong background in working with REST APIs, I can ensure that data flows smoothly between the two systems. I’ll provide production-ready code, a setup guide, and a quick test script to ensure reliable syncing of fields and objects. I understand the importance of clear communication and will be available for up to two weeks of light support after go-live to address any questions or issues. Let me know your preferred tools or SDKs, and if you have any specific assumptions, I’m ready to dive in! Best Regards, Priyanka

@Julian29

Hello, I have 10+ years of experience in software development and API integrations, and I can implement a clean, fully documented CRM connection for your application using the CRM’s public REST APIs, webhooks, and OAuth authentication. Proposed Approach: Map fields between your application and CRM (Salesforce, HubSpot, or Zoho) Handle rate limits, error logging, and round-trip data syncing Implement lightweight, maintainable integration code or configuration Provide concise setup & rollback guide Deliver Postman collection or test script for validation Offer up to two weeks of post-go-live support Acceptance Goals: All agreed fields sync automatically with no duplicates Data updates propagate in under 5 minutes No unhandled errors during a 48-hour test window I WILL PROVIDE 2 YEARS FREE ONGOING SUPPORT AND COMPLETE GUIDANCE, WORKING WITH AGILE METHODOLOGY, AND ASSISTING FROM ZERO TO FULL DEPLOYMENT. I am comfortable with asynchronous communication and can use Node.js, Python, or an iPaaS solution depending on your preference. I eagerly await your positive response to get this rolled out efficiently. Thanks.

@amitpandeyposin

I’m ready to build this lean integration. To keep the project clean and maintainable, I propose using Node.js with the Axios library or a lightweight iPaaS like Make/Zapier if you prefer no-code maintenance. My Approach: Auth: Secure OAuth 2.0 flow. Sync: Webhook-driven for near-instant updates (<5 mins). Reliability: Idempotency keys to prevent duplicates and exponential backoff for rate limits. Assumptions: Your app has accessible API endpoints or a database for me to hook into. You’ll provide a sandbox environment for the chosen CRM. Which programming language does your current stack use, or are you open to a standalone middleware solution?

@neerajdhameliya

Hello, My approach focuses on a stateless integration layer that prioritizes idempotency, ensuring your exhibition data and CRM records sync perfectly without duplicates. I’ll build this using FastAPI (Python) or Node.js to keep the footprint minimal and the execution speed well under your five-minute requirement. I will implement a robust OAuth 2.0 flow with automated token refreshment and structured logging for the 48-hour test window. You’ll receive a clean Postman collection and a "Zero-Friction" rollback guide so your team can maintain the sync with total clarity. Do you prefer the integration to live on your existing server, or should we use a serverless environment like AWS Lambda to keep infrastructure costs near zero? Best, Niral

@Srashtasoft

Hello, I can help integrate your application with the CRM platform (Salesforce, HubSpot, Zoho, or similar) using their REST APIs, OAuth authentication, and webhooks to ensure reliable two-way data synchronization. I have experience building clean API integrations, including field mapping, handling rate limits, preventing duplicates, and implementing proper error handling so contacts, deals, and custom objects sync smoothly. The integration will be lightweight, well-documented, and easy for your team to maintain. Deliverables will include: • Production-ready integration code/configuration • Clear setup and rollback documentation • A Postman collection or test script demonstrating all API calls • Up to two weeks of post-launch support The system will ensure automatic field syncing, update times under five minutes, and stable operation without unhandled errors during testing. I’d be happy to confirm the CRM platform and review the required fields before starting. Best regards, Srashtasoft Team

@toriquldev123

Hello Dear, I am Engineer Toriqul Islam, a B.Sc. graduate in Computer Science & Engineering from Rajshahi University of Engineering & Technology (RUET) with over 10 years of experience in full-stack development. I reviewed your CRM integration project and can efficiently connect your application with platforms like Salesforce, HubSpot, or Zoho using REST APIs, OAuth authentication, webhooks, and secure field mapping to ensure reliable two-way data synchronization. Why Choose Me: • 10+ years Full-Stack & API integration experience • Strong REST API, OAuth, and webhook implementation • Clean, secure, and well-documented code • Experience with CRM data sync and automation • Fast communication and reliable delivery • 100% focus on client satisfaction You are cordially welcome to discuss your project and integration requirements. Thank You! Best Regards, Toriqul Islam

@vishal1145

Your five-minute sync window will fail if you're relying on polling instead of webhooks. Most CRM APIs throttle at 100 calls per 24 hours on standard plans, which means you'll hit rate limits during bulk imports or when syncing more than 50 records at once. This causes duplicate entries and stale data that breaks your sales workflow. Before I map the architecture, I need clarity on two things. First, what's your current record volume - are we syncing 500 contacts or 50,000? That determines whether we need a queue system or can use direct API calls. Second, does your application already have webhook endpoints set up, or do I need to build those from scratch to receive real-time updates from the CRM? Here's the architectural approach: - SALESFORCE/ZOHO REST API: Implement OAuth 2.0 refresh token flow with automatic retry logic to handle expired sessions without manual intervention. - WEBHOOK HANDLING: Build bidirectional sync using CRM webhooks for instant updates instead of polling, reducing sync time from 5 minutes to under 30 seconds. - RATE LIMIT MANAGEMENT: Add Redis-based request queuing to batch API calls and stay under daily quotas while processing bulk operations. - ERROR RECOVERY: Log failed syncs to a dead-letter queue with automatic retry after exponential backoff, preventing data loss during network failures. - FIELD MAPPING: Create a configuration file for custom object mappings so you can adjust fields without touching code when requirements change. I've built similar integrations for 4 companies using Salesforce and Zoho, including one that syncs 12K records daily without hitting rate limits. Let's schedule a 15-minute call to confirm which CRM you're using and review your current data schema before I start development.

@NEHABHAT92

As a website and mobile app development company with over 9+ years of experience, we are masters at turning ideas into reality. My name is Neha and I'm the perfect fit for this project. I have a strong background in web development, E-commerce, CMS-based websites, and Mobile development such as Android, iOS, Java, and more - all the necessary skills to ensure the integration of your application with CRM platforms like Salesforce, HubSpot or Zoho CRM is seamless. Not only will I deliver production-ready integration code or configuration using a language or iPaaS of your choice that's easy for you to maintain, but I'll also provide you with a concise setup & rollback guide as well as a test script or Postman collection demonstrating each API call. My commitment to after-support is absolute. You can count on two weeks of light support for bug fixes or questions post-go-live. Moreover, my extensive familiarity with data mapping, rate limits handling, OAuth-based authentication, and field syncing will guarantee that contacts, deals and even custom objects synchronize reliably both ways between your application and the chosen CRM platform. Let's get to work painlessly and quickly!

@shabahathabib

Hello, I can build a clean, fully documented integration between your application and the CRM of your choice (Salesforce, HubSpot, or Zoho). My approach will focus solely on reliable data flow—contacts, deals, and any custom objects—using their public REST APIs, webhooks, and OAuth authentication. I’ll handle field mapping, rate limiting, and lightweight error handling to ensure smooth two-way syncing. Deliverables include: * Production-ready integration code or configuration that is maintainable. * Concise setup and rollback guide. * Postman collection or test script covering each API call. * Up to two weeks of light post-go-live support. I ensure automatic syncing with no duplicates, sub-five-minute round-trip updates, and zero unhandled errors during testing. I’ll clarify any assumptions upfront and communicate asynchronously for a fast, smooth rollout. Ready to start immediately. Regards, Shabahat Habib

@devbaloni1983

Hello, I am an expert with 15+ years of experience in the technical world, delivering simple to complex websites, e-commerce platforms, membership systems, and custom portals. I always provide clear communication, continued support after delivery, and 100% client satisfaction. I specialize in PHP development, building secure, scalable, and high-performing web applications with custom scripts, API integration, and database management (MySQL, MariaDB, etc.). From dynamic websites to enterprise-level solutions, I focus on delivering clean code and business-driven results.

@DigitalNightOwl8

Hi Mate , Good afternoon! I’ve carefully checked your requirements and really interested in this job. I’m full stack node.js developer working at large-scale apps as a lead developer with U.S. and European teams. I’m offering best quality and highest performance at lowest price. I can complete your project on time and your will experience great satisfaction with me. I’m well versed in React/Redux, Angular JS, Node JS, Ruby on Rails, html/css as well as javascript and jquery. I have rich experienced in API Development, PHP, API Integration, CRM, Software Architecture, REST API, OAuth, API, Zoho CRM and Salesforce.com. For more information about me, please refer to my portfolios. I’m ready to discuss your project and start immediately. Looking forward to hearing you back and discussing all details.. Best Regards

@MQamar123

As a seasoned software developer with a diverse skill set that covers the full spectrum of your project's requirements, I'm confident about my ability to create a seamless integration between your application and CRM. Having worked with mainstream platforms like Salesforce, HubSpot, and Zoho CRM in the past, I'm well-versed in their public REST APIs, webhooks, and OAuth-based authentication - saving both time and effort in integrating your chosen CRM. My proficiency lies in not just building reliable connections through these APIs but also ensuring high data quality by effectively handling rate limits, writing lightweight error handling strategies, and implementing thorough field mapping strategies. Over the course of my 7+ year career, I have developed an ability to understand distinct business needs, design corresponding technology solutions, and meticulously document them. You can count on me to deliver production-ready integration code or configuration that's easy for you to maintain, along with precise setup & rollback guides and clear test scripts for each API call.

@paruls154

Hi As a seasoned full-stack developer with a decade of experience, I have what it takes to seamlessly integrate your application with any mainstream CRM platform like Salesforce, HubSpot, or Zoho CRM. My proficiency in API Development, PHP, and Software Architecture will ensure that all the agreed fields sync automatically, maintaining data integrity. With an emphasis on creating scalable and reliable solutions, I can guarantee a round-trip time for data updates under five minutes while avoiding any unhandled errors during the 48-hour test window. Please have a look at our past work links CRM, ERP, & Software Projects CRM for CA Firm https://www.freelancer.com/portfolio-items/11009761-crmplatform-for-ca-and-accounting Hotel booking platform https://www.freelancer.com/portfolio-items/11005202-b2b-hotel-bookingplatform-travel Inventory Management https://www.freelancer.com/portfolio-items/11005229-crm-order-andinventory-management Thanks & Regards Parul Saini

@rishi9343

As a seasoned full-stack developer with over 8 years of experience in mobile app development, backend service development, and database optimization, I am delighted to offer you my skill set for your exhibition software integration project. I've successfully integrated various applications with mainstream CRMs such as Salesforce, HubSpot, and Zoho CRM using REST APIs, webhooks, and OAuth-based authentication. I am confident in my ability to map fields accurately, ensure optimal data transfer rates, and handle lightweight error management. Drawing on my expertise in PHP, JavaScript (including Node.js), and databases like MySQL and PostgreSQL, I will deliver clean and efficient code that adheres to industry best practices. Because data integrity is critical in your project, I prioritize thorough testing for accurate syncing to eliminate duplicates whilst ensuring minimal processing time for data updates; all within the acceptable two-week timeframe allocated for post-go-live support. Lastly, I value clear communication too; this is why I'm comfortable using collaborative tools like Figma and Postman collection. With me on board, you can be confident that your project will be handled with meticulous precision from start to finish – leaving you with a fully documented and painlessly integrated exhibition software. Let's have a chat soon so I can clarify any assumptions before we roll out this project quickly and painlessly.

@bhartimalu

Hello, I can provide reliable support for your exhibition software, including API integration, bug fixing, performance improvements, and ongoing maintenance. I have experience handling event/exhibition systems with modules like registration, exhibitor management, and database integration. I’ll ensure smooth operation and quick issue resolution. Regards, Bharti

@ahmetTC

Hope you are doing well! Lets start! Your project requires a clean, fully documented integration between your application and a CRM platform (Salesforce, HubSpot, or Zoho), focusing strictly on reliable data flow via REST APIs, webhooks, and OAuth authentication. Potential challenges include handling API rate limits, mapping custom fields accurately, ensuring bidirectional sync without duplicates, and implementing lightweight error handling for robust operation. Previous experience includes connecting apps to multiple CRMs using REST APIs and iPaaS platforms, where initial issues like missing fields, duplicate contacts, or webhook delays were resolved through careful field mapping, throttling logic, and comprehensive testing with Postman collections and scripts. Deliverables include production-ready integration code, a concise setup and rollback guide, a Postman collection demonstrating all API calls, and up to two weeks of post-go-live support to address any minor issues. The solution ensures automatic syncing of all agreed fields, updates within five minutes, and zero unhandled errors over extended testing. I know what do I build for you, can complete it to your full satisfaction within your timeline. I am ready for you and waiting here. Thank you.

@natanr28

Hello, I hope you're doing well. I understand you're looking to integrate your application with a CRM solution and maintain a clean, documented process without extra features or installations. This focus on seamless data flow is vital for your operations. My expertise in API integration with CRMs like Salesforce, HubSpot, and Zoho positions me to effectively use their REST APIs, webhooks, and OAuth for smooth communication between systems. I will ensure that fields sync accurately and handle errors efficiently, letting you maintain peace of mind with reliable data updates. I can deliver production-ready integration code with concise documentation, a test script, and two weeks of support for any questions or fixes you might encounter. I'd like to have a chat with you at least so I can demonstrate my abilities and prove that I'm the best fit for this project. Warm regards, Natan.

@craigd43

As an experienced developer with a strong skill set in PHP, REST API, and integration work, I am confident I can successfully execute your project goals. With proficiency in popular frameworks like Node.js, Vue.js, and C#, I bring a depth of knowledge to the table that will make the process of connecting your application to any CRM platform smooth and efficient. A major strength is my adaptability with different technologies – I can easily adjust to your preferred language or iPaaS as long it’s maintainable for you. My extensive understanding of public REST APIs, webhooks, and OAuth-based authentication has allowed me to proficiently handle field mappings, rate limits, and lightweight error handling that guarantees reliable sync of contacts, deals, and other custom objects. Lastly, I consider myself not only a developer but also a documenter. I can not only provide you with robust production-ready integration code or configuration but also a concise setup & rollback guide along with test scripts or Postman collections for each API call. Further, my support extends up to two weeks for bug fixing and questions after go-live predictions beyond which need nearly non-existence. Clear communication is also crucial to me so we'll have meticulous exchange