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We are looking for an experienced Full Stack Developer to build and manage a custom CRM and lead distribution system. The ideal candidate should have hands-on experience in lead capture, ping/post integrations, and third-party form tracking, especially in performance marketing or lead generation environments. This is NOT a basic website job. Key Responsibilities: * Develop a custom CRM platform to capture, store, and manage leads from multiple web forms and sources * Build and maintain POST and Ping/Post integrations for real-time lead distribution to buyers & sellers * Integrate with third-party APIs, CRMs, and buyer systems for seamless lead delivery * Modify and optimize existing web forms (HTML/JS/PHP or similar) for better tracking and performance * Work with iframe-based embedded forms and ensure accurate lead tracking and attribution * Implement lead routing logic (based on filters like geography, vertical, buyer caps, etc.) * Set up secure data handling (API endpoints, validation, anti-spam measures) * Maintain database structure for efficient search (by date, email, phone, vertical, etc.) * Ensure system scalability to handle high-volume lead traffic * Debug and improve current integrations and workflows Required Skills & Experience: * Strong experience in Full Stack Development (PHP / Node.js / Python or similar) * Solid understanding of REST APIs, Webhooks, and HTTP POST requests * Experience building CRM systems or lead management platforms * Hands-on experience with Ping/Post lead distribution models * Proficiency in MySQL / PostgreSQL or similar databases * Experience working with iframe forms and cross-domain tracking * Knowledge of JavaScript, HTML, CSS for form customization * Familiarity with cloud hosting (AWS, DigitalOcean, VPS environments) * Understanding of data privacy and secure transmission (HTTPS, encryption) What You’ll Build: -A custom centralized Lead Management CRM -Ping/Post system (real-time lead buying/selling) -API integrations with buyers -Lead routing system (based on filters) - A form tracking and attribution system (including iframe-based forms) Important: If you’ve never worked on: Lead gen systems Affiliate networks Ping/Post flows This is NOT the right job for you. Nice to Have: -Experience in affiliate marketing / pay-per-call -Experience with tracking systems and attribution -Experience scaling systems handling thousands of leads/day
Project ID: 40378872
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118 freelancers are bidding on average $1,092 USD for this job

With over a decade of experience in Full Stack Development, including expertise in PHP, Node.js, and Python, I understand the importance of building a custom CRM and lead distribution system for your project. Your goal of creating a centralized lead management platform with real-time lead distribution to buyers and sellers aligns perfectly with my background in high-complexity systems, such as scaling for over 1 million users in Telegram Mini Apps. One strategic insight to ensure scalability and security for your project is to implement robust API integrations and secure data handling measures. I successfully developed and scaled lead management platforms with similar features, showcasing my ability to handle the complexity of your requirements. I encourage you to reach out to discuss the roadmap for your CRM and lead distribution system. I am confident that my expertise and past successes make me the ideal candidate for bringing your project to life.
$1,200 USD in 20 days
8.9
8.9

As an industry leader like myself, you need the best fit for this intricate job. My 18 years of web and app development experience, especially in your specific requirements, lend me the edge over competitors. I have successfully developed custom CRM platforms which might interest you (link to a similar project). I understand the complexity involved in lead distribution and form tracking, and I've worked on multiple projects with high-lead traffic requiring ping/post integrations in real-time. Furthermore, my adeptness in MySQL, PHP, PostgreSQL, etcetera ensures that I can handle and optimize your database effectively. Lead routing logic is one of the areas I excel at since I've previously integrated systems based on advanced filters including geography, vertical, buyer caps and more. In summary, my strong foothold in Full Stack Development - primarily PHP / Node.js / Python-, my profound understanding of CRM systems or lead management platforms, my hands-on experience with Ping/Post lead distribution models make me a perfect candidate for this project. My appreciation for cloud hosting (AWS, DigitalOcean) and understanding of secure transmission (HTTPS, encryption) truly make me an elite choice for this task too!
$1,125 USD in 11 days
9.0
9.0

Hi, You need a CRM that actually moves leads—not just stores them. Before we build, what's your current bottleneck: capturing leads fast, routing them right, or tracking conversions? I've built these systems to handle both, and the architecture matters. Message me to discuss the specifics. Best Regards, Hasan
$750 USD in 28 days
8.7
8.7

Hi there, As you can see, I primarily work on custom-built systems and enterprise-grade platforms. So I will start with understanding your current lead flow, sources, buyer requirements, and existing integrations to design a robust CRM architecture tailored specifically for ping/post workflows and high-volume lead handling. Then I will build a centralized lead management system with structured database design, secure API endpoints, and real-time ping/post logic to route leads based on filters like geography, verticals, and buyer caps, along with seamless integrations with third-party CRMs and buyer systems. After that, I will optimize and standardize your web forms, including iframe-based tracking, ensuring accurate attribution, validation, and anti-spam measures while improving performance and tracking reliability across all sources. At last, I will focus on scalability, stability, and debugging—making sure the system can handle thousands of leads per day, with clean workflows, monitoring, and future-ready infrastructure on AWS or similar environments. Thanks, Rahul
$900 USD in 24 days
8.7
8.7

Hello, I will build your custom CRM with full ping/post lead distribution — lead capture and storage, real-time buyer/seller routing, and API integrations with buyer systems. I will also set up the form tracking layer, including iframe-based attribution with cross-domain support. For the ping/post engine, I will implement a bidding queue where pings fire to all eligible buyers simultaneously, then route the post to the highest-accepted bid — with buyer caps, geo filters, and vertical rules evaluated at the ping stage rather than post. This keeps response times under 500ms even at high volume and prevents overselling. Questions: 1) How many active buyers will the system need to ping concurrently at launch? 2) Do you have existing form infrastructure and database schemas, or is this a fresh build? Looking forward to talking through the details. Kamran
$790 USD in 13 days
8.4
8.4

⭐⭐⭐⭐⭐ Build a Custom CRM and Lead Distribution System for Your Needs ❇️ Hi My Friend, I hope you're doing well. I've reviewed your project requirements and see you're looking for an experienced Full Stack Developer. Look no further; Zohaib is here to help you! My team has successfully completed 50+ similar projects for CRM and lead distribution systems. I will create a robust platform to capture and manage leads, ensuring seamless integration and performance. ➡️ Why Me? I can easily handle your CRM and lead distribution project as I have 5 years of experience in Full Stack Development, focusing on PHP, Node.js, and Python. My expertise includes building custom CRM systems, integrating APIs, and managing databases efficiently. I also have a strong grip on secure data handling and real-time lead distribution. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. I look forward to discussing this with you in our chat. ➡️ Skills & Experience: ✅ Full Stack Development ✅ CRM Development ✅ API Integration ✅ Lead Distribution ✅ MySQL / PostgreSQL ✅ JavaScript, HTML, CSS ✅ Ping/Post Systems ✅ Iframe Forms ✅ Data Privacy ✅ Cloud Hosting (AWS, DigitalOcean) ✅ Debugging and Optimization ✅ Performance Tracking Waiting for your response! Best Regards, Zohaib
$900 USD in 2 days
7.9
7.9

Hi there, We’ve built custom CRMs with lead distribution systems that use ping/post workflows and integrate with third-party APIs. One of our products, Concio, is a lead management system that connects buyers and sellers, allowing sellers to create web forms for lead capture and distribute leads to buyers based on custom filters. We can also handle the front-end work using Vue.js or React.js, as we have dedicated developers for both frameworks. Let’s schedule a 10-minute introductory call to discuss your project in more detail and see if I’m the right fit for your needs. I’m eager to learn more about your exciting project. Best, Adil
$1,004.06 USD in 21 days
7.2
7.2

Hi there I understand you need a scalable lead management system with real-time ping/post distribution and accurate tracking. I can build a custom CRM with secure lead capture, smart routing (geo, caps, verticals), and seamless API integrations, ensuring reliable delivery and high performance from day one. Relevant experience: Lead gen & CRM systems API / webhook / POST integrations High-volume data handling & routing logic I can also help optimize your current flows and tracking. Thanks Sachin
$750 USD in 15 days
7.5
7.5

Drawing from my 11+ years of experience in web development, which includes expertise in Full Stack Development, JavaScript, MySQL, and Node.js among others, I am well-equipped to meet the unique demands of your project. My proficiency in building custom CRM systems paired with an understanding of performance marketing gives me a strong grasp on lead generation workflows. Specifically, I'm familiar with your desired skills like REST APIs, Post requests, Ping/Post integrations and more. Not only do I bring a deep knowledge bank to the table but I am also passionately committed to delivering quality work. I would be proud to build for you a centralized Lead Management CRM that seamlessly integrates with third-party APIs and buyer systems along with developing a Ping/Post system that executes effective real-time lead distribution with sophistication. Given the focus of your project, it is only apt that you rely on someone like me who has directly worked on similar systems for performance marketing and understands their nuances. Let's make this happen!
$750 USD in 5 days
6.9
6.9

Your ping/post system will fail under load if you're not using async queues to handle buyer timeouts. I've seen this crash lead gen platforms during peak traffic when buyers take 3+ seconds to respond and requests pile up. Before architecting the solution, I need clarity on two things: What's your expected concurrent ping volume during peak hours - are we talking 100 or 1000 simultaneous buyer requests? And do your buyers support webhook callbacks for async responses, or are you stuck with synchronous HTTP posts that block until they respond? Here's the architectural approach: - NODE.JS + BULL QUEUE: Implement Redis-backed job queues to handle ping/post workflows asynchronously, preventing timeout cascades when buyers are slow and ensuring you can process 500+ leads per minute without blocking. - POSTGRESQL + JSONB: Store lead metadata in JSONB columns for flexible filtering (geo, vertical, caps) while maintaining relational integrity for buyer routing rules - this lets you query "available California solar buyers under daily cap" in under 50ms. - API RATE LIMITING: Build token bucket rate limiters per buyer to respect their API quotas and implement circuit breakers that auto-disable buyers after 3 consecutive failures, preventing wasted ping attempts. - IFRAME TRACKING: Use postMessage API with origin validation to capture form submissions cross-domain while maintaining HTTPS security and preventing data leakage to unauthorized domains. - MYSQL PARTITIONING: Partition lead tables by date to keep search queries fast when you hit millions of records - searching last 30 days stays under 200ms even at 10K leads/day. I've built 3 similar ping/post systems for performance marketing clients processing 50K-200K leads monthly. One handled lead distribution for a pay-per-call network with 40 simultaneous buyers. Let's schedule a 15-minute call to discuss buyer timeout handling and your fallback routing logic before we start development.
$1,020 USD in 30 days
7.4
7.4

With my extensive experience as a Full Stack Developer, especially in areas relating to lead generation and performance marketing, I genuinely believe I'm an Excellent fit for this project. I have a strong background in building CRM systems and lead management platforms from scratch, which perfectly aligns with your objective. My proficiency with PHP, Node.js, and Python ensures I can provide the best technical solution. I am well-versed in REST APIs, Webhooks, and HTTP POST requests, and have a deep understanding of database management (MySQL/PostgresSQL) which are vital skills for creating your custom CRM platform and lead distribution system. Over the years, I've dealt with high-volume lead traffic systems as demanded by this project, which shows my ability to create scalable solutions. Furthermore, I'm familiar with cross-domain tracking using iframe forms and have built multiple API integrations for seamless third-party connectivity. I assure you of bug-free and efficient coding as testified by my clients in terms of cleanassetmaintenance code. Invest in me for this project, and let's build a reliable and high performing lead management system together!
$750 USD in 1 day
6.5
6.5

Hello, I’ve gone through your project details and this is something I can definitely help you with. With 10+ years of experience in full stack development, I specialize in building custom CRM systems and lead distribution platforms. My expertise includes hands-on experience with ping/post integrations and third-party form tracking, tailored specifically for performance marketing environments. I will develop a centralized Lead Management CRM that efficiently captures and routes leads, ensuring real-time distribution and seamless integration with APIs. My approach focuses on secure data handling, optimized tracking systems, and scalability to manage high-volume lead traffic efficiently. You can check my portfolio here: https://www.freelancer.in/u/ixorawebmob I’m interested in your project and would love to understand more details to ensure the best approach. Could you clarify: 1. What specific features do you prioritize in the CRM? Let’s discuss over chat! Regards, Arpit Jaiswal
$750 USD in 30 days
7.1
7.1

Hi, I have reviewed your project requirements and I’m confident I can deliver accurate, data-driven, and scalable solutions for your needs. I bring 9+ years of combined experience in Python development, Data Science, Data Analytics, and Business Intelligence, helping clients turn raw data into meaningful insights and actionable dashboards. My Core Expertise Includes: Node js , React Js, Mongo , Blockchain, crypto currency Python Development: Pandas, NumPy, Scikit-learn, FastAPI, Flask, Django Data Science & Machine Learning: Data cleaning, EDA, predictive modeling, AI/ML solutions Data Analytics: Statistical analysis, reporting, automation, data mining Power BI: Interactive dashboards, DAX, Power Query, data modeling, KPI reporting Databases & Big Data: SQL, NoSQL, SparkML AI & Frameworks: TensorFlow, PyTorch, Cursor, Calude, gemini, nano, chatgpt. I focus on clean code, clear insights, performance optimization, and business-oriented outcomes. I ensure timely delivery and transparent communication throughout the project lifecycle. Let’s connect to discuss your requirements in detail and define the best approach for your project. Looking forward to working with you. Regards, Anju Logical Soft Tech Pvt Ltd, Indore(M.P)
$1,500 USD in 30 days
6.5
6.5

I’ve worked on similar lead gen platforms where real-time lead routing and ping/post integrations were key to performance. I can build a custom CRM designed to capture leads from multiple sources, including iframe forms, with precise tracking and attribution. For lead distribution, I’ll implement a ping/post system that routes leads instantly based on your filters like geography and buyer caps. My approach ensures secure API endpoints with data validation and anti-spam built-in, keeping lead info safe and clean. I’ve optimized lead forms before for better tracking and conversion, including cross-domain iframe setups. A question: do your buyer APIs support synchronous responses for instant accept/reject, or should the system handle queued lead statuses? Also, do you want to manage lead caps dynamically in the CRM, or via external config? I can get this system scalable from day one to handle thousands of leads daily. Ready to discuss your current setup and start building a solid lead management and distribution platform that matches your exact needs.
$1,125 USD in 7 days
6.1
6.1

With 10+ years of experience under my belt, I am confident I possess the skills and expertise necessary to excel at your project. Having successfully built numerous custom CRM platforms and lead distribution systems including ping/post integrations, I’m well-versed in handling large volumes of data in real-time. My proficiency with REST APIs, Webhooks, HTTP POST requests, as well as my deep understanding of MySQL, PostgreSQL databases makes me a strong candidate for ensuring smooth third-party API and CRM integrations – a key aspect of your project. In a nutshell, I am primed to create with you a custom centralized Lead Management CRM that incorporates everything from ping/post systems for real-time lead buying/selling to API integrations with buyers; from a nifty lead routing system based on filters to an adept form tracking and attribution system – all encompassed within a scalable structure for high-volume leads. Choose me for building complete end-to-end solutions that will not only achieve your immediate goals but promise long-term success. Let's turn this vision into reality together!
$750 USD in 7 days
6.3
6.3

Hi, your project is exactly the kind of high-performance lead distribution and CRM system where architecture and tracking accuracy really matter. I have hands-on experience building full-stack lead management systems with REST APIs, webhooks, MySQL/PostgreSQL, and complex routing logic for real-time data distribution. I’ve worked with form tracking, iframe-based integrations, and secure API workflows, including ping/post style lead flows and attribution systems in high-volume environments. I can build you a scalable CRM with clean lead capture, buyer routing rules, and robust tracking so you have full control and visibility from day one. Looking forward for your positive response in the chatbox. Best Regards, Arbaz N
$1,200 USD in 7 days
6.6
6.6

As an experienced Full Stack Developer, my focus has always been on building and managing scalable systems that support real-world applications, something that your lead capture and distribution project necessitates. I have successfully designed and built custom CRM platforms in the past, including sophisticated Ping/Post integrations as demanded by the project description. My proficiency with PHP / Node.js / Python and understanding of REST APIs, Webhooks, and HTTP POST requests will come in handy for developing the unique CRM system you desire. Furthermore, as a developer versed in different database systems, including MySQL and PostgreSQL, I possess the necessary skills to create en efficient database structure for the leads as specified. My expertise extends to embedding and working with iframe forms while guaranteeing accurate lead tracking - a skillset that proves invaluable to the successful completion of this project. Additionally, my familiarity with API integrations and data privacy will be critical for setting up secure endpoints and ensuring protected lead transmission for your CRM system. All these credentials attest to my capability to deliver a robust, efficient, secure, scale-appropriate lead management system which is exactly what you need!
$1,500 USD in 30 days
6.1
6.1

Hi There!!! ★★★★ (Custom CRM + Ping/Post Lead Distribution System for scalable real-time lead routing & tracking) ★★★★ Project understanding: I understand you need a full custom CRM with advanced lead capture, ping/post distribution, buyer API integrations, iframe tracking, and real-time routing based on rules like geo, caps, and verticals. This is a high-volume performance marketing system, not a basic web app. ⚜ Custom CRM for lead managment & storage ⚜ Ping/Post real-time lead distribution system ⚜ REST API, webhooks & third-party integrations ⚜ Lead routing logic (geo, caps, filters) ⚜ Iframe & form tracking / attribution setup ⚜ MySQL/PostgreSQL optimized structure ⚜ Secure scalable backend architecture I have strong experience in full stack development with PHP/Node.js and have worked on lead gen & affiliate style systems with API based lead routing and tracking flows. Approach: build CRM backend + DB schema, develop ping/post engine, integrate buyer APIs, implement routing rules, secure endpoints, then test high-volume lead flow and deploy on VPS/cloud. Happy to share relevant system examples / demos on request. Looking forward to discuss. Warm Regards, Farhin B.
$756 USD in 10 days
6.5
6.5

Hello there, we are a team of developers and we can build your custom CRM. Please, send me a message to discuss the work. Thanks Ashish Kumar.
$1,125 USD in 7 days
5.8
5.8

Hi, With over a decade and a half of experience in software application development, my name is Johib and I have a deep understanding of the needs and complexities of handling leads and implementing third-party API integrations. Not only have I built numerous CRM systems from scratch - including platforms like Avaya, Pramati, CGI, Yash, GMS, Vcentric, Meta-io, CTI Services, and MMTex - I have a successful track record in building Ping/Post lead distribution models for seamless real-time lead buying/selling. My skills perfectly align with your project requirements: be it working across REST APIs to build secure lead management systems, implementing ping/post integrations for efficient lead delivery or creating logical routing systems based on filters like geography, vertical or buyer caps. Having used JavaScript, HTML, CSS extensively throughout my career as a full-stack developer; I'm well-equipped to customize your HTML/JS/PHP-based web forms for better tracking and performance.
$1,125 USD in 7 days
5.3
5.3

Jamnagar, India
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