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We are seeking a Senior Developer with extensive experience in the Bitrix24 platform and Twilio infrastructure to execute Phase 1 of our automated customer service system for a real estate agency. The objective of this phase is to structure the CRM, optimize workflows, and integrate a single corporate number via Twilio that manages traditional telephony, SMS, and the official WhatsApp Business API (WABA). Scope of Work (Phase 1): 1. Bitrix24 Optimization and Automation: ◦ Configuration and cleanup of the sales funnel (Leads, Deals, Contacts). ◦ Creation of automation rules (triggers and actions) based on customer behavior and stage changes within the CRM. 2. Telephony Integration with Twilio: ◦ Configuration of a Twilio number within Bitrix24 to make and receive calls directly from the CRM. ◦ Implementation using Elastic SIP Trunking to ensure call recording and system scalability. 3. Official WhatsApp Business (WABA) and SMS Integration via Twilio: ◦ Configuration of the official WhatsApp Business API (Cloud API) within the Twilio console, connected to Bitrix24. ◦ Connection to the Bitrix24 CRM Marketing module to enable the secure, bulk sending of Meta-approved WhatsApp templates and SMS campaigns. ◦ Enabling the multi-agent feature so that our advisors can engage in two-way chat directly from the Bitrix24 dashboard using the official line. Critical Scalability Requirement (for the future Phase 2): The Twilio architecture and Bitrix24 webhooks must be structured in a clean, open, and native manner (via REST API). The use of closed applications or third-party patches from the marketplace that limit code control will not be accepted. In Phase 2, this same Twilio number and infrastructure will be connected to external Artificial Intelligence agents for voice (Retell AI) and chat (Botpress). The work delivered in this Phase 1 must leave the "pipeline" ready and open to receive these connections without requiring any restructuring of the CRM. Freelancer Requirements: • Demonstrable and proven experience working with the Bitrix24 REST API. • Advanced proficiency with the Twilio Console (SIP Trunking, Messaging Services, and integration with Meta Business Manager). • Ability to deliver the project with clean code and technical documentation of the implemented connections.
Project ID: 40457180
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102 freelancers are bidding on average $142 USD for this job

Hi There!!! ★★★★ ( Bitrix24 CRM + Twilio VoIP, WhatsApp & SMS integration with scalable REST architecture ) ★★★★ Project understanding: I understand you need Phase 1 of a Bitrix24 and Twilio integration system for a real estate CRM, including funnel optimization, automation rules, SIP telephony setup, and WhatsApp/SMS via Twilio, built with a clean architecture ready for future AI expansion. Services: ⚜ Bitrix24 CRM setup & sales funnel optimization ⚜ Workflow automation (triggers, stages, actions) ⚜ Twilio SIP trunking for calls + recording ⚜ WhatsApp Business API + SMS integration ⚜ REST API based scalable architecture design ⚜ Webhooks setup for future AI agents (Phase 2 ready) ⚜ Technical documentation & deployment support I have experience working with CRM APIs, VoIP integrations and automation systems using Twilio-like services. I focus on scalable backend design and clean API structure, sometimes small grammar mistakes but strong technical clarity. Approach: I will structure Bitrix24 workflows, connect Twilio via secure REST APIs, configure SIP + messaging services, and ensure architecture is fully ready for AI expansion without refactoring. Let’s connect and discuss integration details. Warm Regards, Farhin B.
$110 USD in 10 days
6.5
6.5

Hi there, I like how you have outlined your project description with clear phase objectives and technical requirements. You are seeking a Senior Developer expert in Bitrix24 and Twilio to optimize your CRM, automate workflows, and integrate telephony and messaging services via a single Twilio number, including WhatsApp Business API support. The goal is a scalable and open solution that can later incorporate AI agents without restructuring. With extensive experience working on Bitrix24 REST API and advanced Twilio implementations including SIP Trunking and Messaging Services, I am confident in delivering a robust and clean integration tailored to your real estate agency’s needs. I focus on clean, maintainable code and provide thorough technical documentation to ensure future scalability and seamless transition to Phase 2. My approach will prioritize structured CRM configuration, automation rule creation, and secure multi-agent communication within Bitrix24’s dashboard, all integrated natively without relying on limiting third-party apps. I would love to discuss your specific needs further and start mapping out the best architecture for this integration. Please feel free to reach out so we can get started on Phase 1 promptly.
$175 USD in 15 days
6.0
6.0

HI There, I have carefully reviewed your Bitrix24 + Twilio Phase 1 automation requirements and can set up a clean, scalable CRM and communication infrastructure aligned with your future AI expansion plans. I have strong experience working with Bitrix24 REST API, Twilio (SIP Trunking, SMS, and WhatsApp Business API), and CRM automation workflows. I can optimize your sales funnel, configure automation triggers, and integrate Twilio for voice, SMS, and WhatsApp messaging while ensuring a clean, open architecture ready for future AI integrations without rework. Best Regards Waqas Ahmed.
$140 USD in 7 days
6.1
6.1

Hello dear, Greetings from MD. Toriqul Islam! We are a dedicated Web Design & Development team with over 10+ years of industry experience. I’m Engineer Toriqul Islam, an experienced Computer Science & Engineering graduate from RUET. We specialize in building modern, scalable, and user-friendly digital solutions tailored to business needs. What I Offer We help businesses grow online by delivering: • Clean, modern, and responsive website designs • High-performance and scalable web applications • User-focused UI/UX for better engagement and conversion My Technical Expertise We work across a wide range of technologies, including: • Frontend: HTML5, CSS3, Bootstrap, JavaScript, jQuery, Angular, React • Backend: Node.js, PHP, Laravel, .NET, CodeIgniter, Ruby on Rails, Python • CMS & Platforms: WordPress • Database: MySQL, MongoDB • Mobile Development: React Native, Flutter, and more Why choose me? ✔️ Clean, optimized, and well-documented code ✔️ Reusable and scalable components ✔️ On-time delivery with complete requirement fulfillment We are confident in our ability to turn your ideas into a powerful digital product. Let’s discuss your project and make it a success. Looking forward to working with you! Best Regards, Md. Toriqul Islam
$54 USD in 2 days
5.8
5.8

Hi, I understand you need a Senior Developer to set up Phase 1 of your automated customer service system using Bitrix24 and Twilio for your real estate agency, with a strong focus on CRM structure, telephony, and messaging integration. I can configure and optimize your Bitrix24 CRM by cleaning and structuring the sales funnel (Leads, Deals, Contacts) and building automation rules based on customer actions and CRM stage changes. I will integrate your Twilio number into Bitrix24 for full telephony support, including inbound/outbound calls, SIP trunking setup, and call recording for scalability and reliability. I can also set up W-App Business API (WABA) and SMS via Twilio, fully connected to Bitrix24 CRM and marketing modules, enabling two-way communication, bulk template messaging, and multi-agent handling directly from the dashboard. The entire system will be built using clean REST API and webhook architecture, ensuring it remains fully open and scalable for Phase 2 AI integrations (voice and chat agents) without requiring any redesign later. I will also provide proper documentation for all connections and workflows to ensure maintainability and transparency. Looking forward to discussing your current setup. Best regards, Usama K
$200 USD in 3 days
5.0
5.0

Hello, I am Vishal Maharaj, a seasoned professional with 20 years of expertise in PHP, API, Automation, and REST API. I have thoroughly reviewed your requirements for the Bitrix24-Twilio Integration project. To ensure successful execution of Phase 1, I will optimize Bitrix24 CRM by configuring the sales funnel, setting up automation rules, and integrating Twilio for telephony and WhatsApp Business API. I will meticulously handle the configuration of Twilio numbers, implement Elastic SIP Trunking, and connect the WhatsApp Business API to Bitrix24 CRM Marketing module. Furthermore, I will ensure the scalability and cleanliness of the Twilio architecture and Bitrix24 webhooks for potential Phase 2 integration with AI agents. My extensive experience with Bitrix24 REST API and Twilio Console will guarantee a seamless and efficient project delivery. Please initiate a chat to discuss further details. Cheers, Vishal Maharaj
$250 USD in 5 days
5.1
5.1

Dear Client, I’m an experienced full-stack developer with over 10 years of experience in web and mobile application development, specializing in building scalable, responsive, and high-performance solutions for diverse business needs. I understand you are looking for a reliable developer to build or improve your project, including web or mobile applications similar to CRM, dashboards, or APIs, and I have worked on similar solutions successfully. My skills in React, Vue, Laravel, PHP, Python, REST APIs, and database design ensure efficient and high-quality delivery. Feel free to share more details or ask questions. I’m ready to refine my approach to match your exact requirements. Looking forward to working with you. Best regards, Md Ruhul Ajom
$50 USD in 3 days
5.4
5.4

Leveraging our team’s collective decades-long experience, Twilio Console and Bitrix24 REST API have been our weapons of choice when it comes to untangling complex telephony knots as designed in your project description. With an unwavering focus on enabling superior customer experiences, we've successfully integrated Twilio's services with different other CRM systems (especially Birtix24) to streamline processes for businesses across various industries. What truly sets us apart is that we don't view ourselves as just coders. We are cogent visionary technology partners who bring forth agile, scalable solutions. Our work's prime objective has always been to harmonize user behavior and technological prowess, resulting in projects that seamlessly adapt to evolving operational environments – exactly the kind of solution you are seeking. Our clean code practice enhances long-term stability, allowing future integrations with components like Retell AI and Botpress without any restructuring of your CRM system. You’ve mentioned your preference for open REST API-based connections which perfectly aligns with our philosophy of giving our clients full control over their solutions by keeping the code open, accessible and scalable. Together let’s actualize your vision into a powerful, versatile system empowering the real estate agency in ways beyond measure!
$200 USD in 3 days
4.8
4.8

Hello, With over 7 years of experience in CRM platforms and PHP development, I am well-equipped to handle the integration of Bitrix24 and Twilio for your real estate agency's customer service system. I understand the requirements of structuring the CRM, optimizing workflows, and integrating Twilio for telephony, SMS, and WhatsApp Business API functionality. My expertise lies in building scalable SaaS systems, fintech solutions, and eCommerce platforms with a focus on performance and real-time processing. I specialize in full-stack development using Node.js, TypeScript, and Python, along with modern web/mobile technologies like React and React Native. Additionally, I have a strong background in AI systems and low-latency architectures. Let's discuss your project further. Please feel free to start a chat so we can explore the details. Thanks.
$140 USD in 7 days
4.5
4.5

✋ Hi There!!! ✋ The Goal of the project:- Build a scalable Bitrix24 and Twilio integration system with CRM automation, telephony, and WhatsApp Business API readiness. I carefully reviewed your requirement for Bitrix24 optimization, Twilio SIP trunking, WhatsApp Business API integration, and a clean scalable architecture prepared for future AI agents. I am the best fit as I build robust CRM and communication system integrations with clean API driven architecture. • Bitrix24 CRM optimization with automated workflows, triggers, and funnel setup • Twilio integration for calls, SMS, and WhatsApp Business API via secure configuration • Scalable REST API architecture prepared for future AI voice and chat expansion I provide UI/CRM configuration, API integration, testing, documentation, and full source delivery with 9+ years full stack experience, including similar CRM and VoIP integration systems. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
$111 USD in 11 days
4.6
4.6

Hi, I can help optimize your Bitrix24 CRM and build a scalable Twilio communication infrastructure for calls, SMS, and official WhatsApp Business integration using clean REST API architecture. I have experience with Bitrix24 automations, Twilio SIP/Messaging services, WABA setup, and scalable API-ready systems prepared for future AI integrations like Retell AI and Botpress.
$100 USD in 7 days
5.0
5.0

Hi, I’ve worked extensively with Bitrix24 and Twilio, optimizing CRM workflows and integrating telephony and messaging solutions. I’ve configured Bitrix24 for sales funnels, set up automation rules, and integrated Twilio for call management and WhatsApp Business API. I can start with a small test task to ensure alignment before moving to Phase 1, which includes CRM optimization, Twilio telephony and SMS integration, and official WhatsApp Business API setup. Best Regards, Ivica
$140 USD in 7 days
4.2
4.2

⚠️ If you're not happy, you don’t pay. ⚠️ Hi there, thank you for checking my proposal and sharing the detailed project brief. I can build your automated customer service system for a real estate agency using Bitrix24 and the Twilio infrastructure with a scalable and efficient design. I will deliver: • Bitrix24 Optimization & Automation • Telephony Integration with Twilio • Official WhatsApp Business (WABA) & SMS Integration • Clean code structure for future scalability You will also receive: • Comprehensive technical documentation I am confident I can execute your vision professionally and efficiently. Looking forward to discussing timeline and next steps. Best regards, Chirag.
$200 USD in 7 days
4.4
4.4

Hi, Have you already set up your Bitrix24 environment for the initial integration? I can help optimize your workflows and structure the CRM for your automated customer service system. In Phase 1, I will ensure a seamless configuration of the sales funnel and automation rules based on customer interactions. For telphony integration, I will configure a Twilio number, implement Elastic SIP Trunking for call management, and enable WhatsApp Business API to facilitate SMS campaigns and two-way chats. I have extensive experience with Bitrix24 and Twilio, having successfully delivered similar projects. I focus on providing clean, scalable code and thorough technical documentation to ensure easy transitions into future phases. Let me know if you’d like to discuss this further! Best Regards, Vijay Kumar
$180 USD in 7 days
4.1
4.1

Hello, I can execute Phase 1 by optimizing Bitrix24 and integrating Twilio telephony, SMS, and official WhatsApp Business in a clean, API-first way. Relevant experience: • Bitrix24 CRM setup, funnels, triggers, and automation • Bitrix24 REST API and webhooks • Twilio Voice, SMS, Messaging Services, and SIP Trunking • WhatsApp Business API via Twilio/Meta setup • CRM chat routing and multi-agent workflows • Scalable architecture prepared for AI voice/chat agents Approach: • Clean and configure Leads, Deals, Contacts, and sales stages • Build automation rules based on customer actions and pipeline changes • Connect Twilio number for inbound/outbound calls in Bitrix24 • Configure Elastic SIP Trunking with call recording and scalability in mind • Set up official WABA via Twilio and Meta Business Manager • Enable SMS/WhatsApp campaign workflows using approved templates • Configure two-way advisor chat from Bitrix24 • Structure REST/webhook architecture so Phase 2 can connect Retell AI and Botpress without rework I will avoid closed marketplace patches and keep the integration documented, maintainable, and ready for future AI agents. Questions: • Is your Bitrix24 cloud or self-hosted? • Is the Twilio number already purchased and WABA approved? • Do you already have Meta Business Manager verified? • Should call recordings be stored in Bitrix24, Twilio, or both?
$140 USD in 7 days
4.3
4.3

Hi, I am a full-stack developer with 8 years of rich experience in software development, with a background in Bitrix24 REST API, Twilio infrastructure, WhatsApp Business API, CRM automation, SIP trunking, VoIP systems, REST integrations, and scalable communication workflows. I can help structure your Bitrix24 and Twilio integration with clean REST-based architecture, scalable webhook design, SIP trunk configuration, WABA and SMS integration, CRM automation flows, and multi-agent messaging support while keeping the infrastructure fully open and ready for future AI integrations with Retell AI and Botpress in Phase 2. I'm an individual freelancer and can work on any time zone you want. Please contact me with the best time for you to have a quick chat. Looking forward to discussing more details. Thanks. Emile.
$250 USD in 7 days
4.2
4.2

Hi, it’s building a clean CRM + Twilio automation layer that won’t block the AI voice/chat phase later. I’d start by mapping the Bitrix24 funnel, webhook events, Twilio call/SMS/WhatsApp flows, and the exact handoff points needed for Retell AI and Botpress. The main risk is creating a quick integration that works now but becomes hard to extend, so I’d keep the REST/API structure open, documented, and avoid marketplace patches that lock you in. A similar case I handled involved CRM workflow cleanup plus messaging automation, where the fix was separating CRM triggers from communication logic so the system stayed easier to maintain. Thanks!
$200 USD in 7 days
3.9
3.9

With a robust background in working with the Bitrix24 REST API and an advanced proficiency in the Twilio Console, I bring along the hands-on expertise needed for your project. As a freelance web and software developer, I have successfully optimized CRM systems for businesses across various industries, ensuring clean codes and scalable solutions. This includes everything from configuration and cleanup of sales funnels to implementing automating rules and triggers based on customer behavior. I am well-versed in Twilio's infrastructure, including SIP Trunking and Messaging Services facets essential for your Telephony Integration needs. Being deeply familiar with the intricacies of Twilio API will also come in handy during the integration of official WhatsApp Business API and SMS through Twilio. What sets me apart is not just my technical expertise but my approach. I see beyond mere coding – my focus is on building digital products that fulfill client's business objectives and are ready to scale. And that resonates perfectly with your critical scalability requirements for future phases as well. In a nutshell, my comprehensive technical capabilities, problem-solving mindset, and results-driven approach are key factors that make me the ideal fit for this challenging project.
$200 USD in 5 days
4.0
4.0

My extensive knowledge of the Bitrix24 REST API and advanced proficiency with the Twilio Console align perfectly with the specific needs of this integration work. I have not only worked with the Twilio shared SIP trunking system, but I have also delved into SIP Trunking and Messaging Services within Twilio. This means I can efficiently configure your dedicated Twilio number in Bitrix24 to manage your telephony needs and SMS campaigns without any need for patching or third-party applications. Moreover, my dedication to clean code and thorough technical documentation ensures that the systems I build are not only scalable but easily integrated with external agents such as voice (Retell AI) and chat (Botpress) which will be crucial for your Phase 2. By leaving the CRM "pipeline" ready and open for future integrations, you can trust that you are investing in a stable, adaptable solution. Let's connect soon to discuss your project further!
$99.99 USD in 2 days
3.7
3.7

Leveraging multiple programming languages including PHP and C#, I possess everything necessary to tackle the integration of Bitrix24 and Twilio in this real estate agency project. My extensive experience with the Bitrix24 REST API coupled with advanced proficiency in the Twilio Console will ensure an efficient execution of the first phase. Moreover, my skills extend far beyond connecting these two platforms. As a full-stack developer, I'm adept at structuring clean, scalable code - a critical requirement for this project's future Phase 2 - where the Twilio number and infrastructure connects with external AI agents. Choosing me means a commitment to delivering high-quality code, meeting deadlines, and most importantly, exceeding your expectations. I am confident that my technical agility, broad skill set and precise attention to detail are exactly what's needed to optimise your CRM in accordance with your vision. You've got found a capable Pressian who is ready to bring heightened efficiency and maximised performance to your real estate agency through this integrated customer service system.
$140 USD in 2 days
3.9
3.9

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