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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: 40456935
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77 freelancers are bidding on average $101 USD for this job

Hello, As a reputable software development company with many years of experience, we have the skills and qualifications necessary to turn your ambitious project into an automated reality. We've worked extensively with both Bitrix24 and Twilio APIs, optimizing communication workflows, automating sales processes, and structuring scalable systems - all facets of your project scope. Our deep understanding of the REST API ensures clean, native connections between these platforms, without reliance on third-party patches or applications that may compromise long-term performance. In addition to our technical proficiency, our team takes pride in offering end-to-end solutions that exceed expectations. We understand the importance of clean code and meticulous documentation for smooth project scalability and management. This is a critical aspect for your Phase 2 integration with AI agents, something we are already well-versed in. Choosing us means you can count on a level of professionalism and expertise that will save you time and effort during this often complex stage of development. Finally, our commitment to delivering top-notch customer service will ensure that we walk this journey together - from inception to completion - not only as partners but as trusted advisors. Let's achieve your goals, inspire growth within your real estate agency using cutting-edge technology and a dedicated team who believes in the power of making miracles; afte Thanks!
$90 USD in 1 day
8.6
8.6

As a Senior Developer, I am more than capable of executing Phase 1 of the Bitrix24-Twilio Integration project with ease. My extensive experience working with both Bitrix24 REST API and Twilio Console will be invaluable in optimizing Bitrix24, configuring telephony features using Elastic SIP Trunking, and integrating Twilio's SMS services including WhatsApp Business API. Lastly, beyond my expertise in Bitrix24 and Twilio, my overall skills also span other important aspects like creating impactful Web Services (JSON, XML, SDK, SOAP, SAML, SSO), ensuring Mobile Responsive Website Design & Development using tools like AngularJS as well as the integration of various APIs like Google Business Manager or Payment Gateways like PayPal or Stripe. So should any ancillary requirements emerge during the project scope - you can consider it done! Let's discuss your vision further and bring seamless automation to your customer service system.
$99 USD in 6 days
8.1
8.1

This is a classic Phase 1 CRM foundation build — and the key is doing it “clean API-first” so your future AI layer (Retell + Botpress) plugs in without rework. Greetings! I’m a senior CRM automation engineer with 9+ years of experience, specialising in Bitrix24 REST API architecture and Twilio-based communication systems (voice, SMS, and WhatsApp Business API) for scalable customer service infrastructures. Here’s how I can help: * Structure and clean Bitrix24 CRM (Leads, Deals, Contacts) with properly designed sales funnels and stage-based automation triggers via REST API * Build automation workflows for lifecycle events (lead capture, stage change, assignment routing, follow-ups) ensuring fully traceable CRM logic * Integrate Twilio via Elastic SIP Trunking for inbound/outbound calling directly inside Bitrix24, including call logging and recording * Configure WhatsApp Business API (WABA) + SMS via Twilio Messaging Services, fully connected to Bitrix24 Marketing module for approved templates and two-way agent communication * Architect the system in a modular, API-native way (webhooks + REST only), ensuring Phase 2 AI integrations (Retell AI, Botpress) can be added without structural changes I’ve built similar omnichannel CRM systems where Bitrix24 acted as the core hub connected to Twilio, WhatsApp, and external automation layers, so I understand both scalability and compliance constraints.
$140 USD in 7 days
5.9
5.9

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
$80 USD in 2 days
5.8
5.8

<<<✔Consider it DONE✔>>> YO! I understand your project and I'm eager to help. With my extensive experience in web development and deep knowledge of Bitrix24 and Twilio, I am well-equipped to tackle the complexities of your project. I have a proven track record working with the Bitrix24 REST API and have developed clean, efficient code for previous clients that meets their specific needs. Moreover, I am highly proficient in the Twilio Console, including SIP Trunking and Messaging Services, which will be essential for integrating your telephony and WhatsApp Business API needs. Looking forward to being part of your project! You will surely be impressed by my work! Not sure what the next step is? I offer free and professional consultation -- I'm just a text away. All the very best, Josh
$80 USD in 2 days
5.5
5.5

With over a decade of hands-on experience in networking, cybersecurity, and VoIP solutions, I am confident in my ability to execute the requirements for Phase 1 and ensure a successful integration between Bitrix24 and Twilio systems. My expertise extends to working with even the most complex ecosystems like Bitrix24, as I have designed and implemented network infrastructures using platforms/vendors such as Cisco, VMware, IBM, Mikrotik, Ubiquiti, Lenovo, Fortinet, Palo Alto, Checkpoint. In addition to that, my knowledge and proficiencies in VoIP (including Asterisk PBX) make me well-equipped to handle the Telephony Integration facet of this project. I am also experienced in Cloud API integrations like the one needed for WhatsApp Business API on Twilio. Rest assured that I will implement connections that are clean, open, native to maximize efficiency and scalability for future phases. Lastly, my commitment to best practices aligns perfectly with your requirement for clean code and comprehensive technical documentation. I value transparency in every project I handle. Choose me as your Senior Developer for this project and gain not just someone who delivers it on time but a committed partner who will go above and beyond to actualize your vision while keeping future scalability in mind.
$120 USD in 2 days
5.3
5.3

Hello, I am Vishal Maharaj, a seasoned developer with 20 years of expertise in PHP, API, Automation, and REST API. I have meticulously reviewed your project requirements for integrating Bitrix24 with Twilio for your real estate agency's automated customer service system. To achieve this, I will optimize and automate Bitrix24 CRM, set up Twilio telephony integration using Elastic SIP Trunking for call recording and scalability, and configure WhatsApp Business API and SMS integration via Twilio. I will ensure a clean, open REST API structure for scalability in future phases. Let's discuss further details and initiate the chat. Cheers, Vishal Maharaj
$150 USD in 7 days
5.1
5.1

Hi! The fact that you want everything built with direct Bitrix24 REST API calls and without marketplace patches really stands out. Avoiding third-party quick fixes is the right move for solid integrations, especially when you're planning Phase 2 AI voice and chat links. I've set up similar CRM integrations with Twilio and WhatsApp (including multi-agent live chat via official APIs), bridging custom web apps to Twilio for call, SMS, and WABA. Setting up Elastic SIP Trunking and WhatsApp Cloud API in a way that leaves the pipeline open for your future Retell AI and Botpress connects is all about planning the webhook and event structure carefully. Are you already on a Bitrix24 self-hosted plan, or is this Bitrix24 Cloud? Some API hooks and custom telephony bits depend on the edition. Happy to map out exactly which Bitrix24 entities and Twilio flows need custom code versus what can be configured, free of charge. You can see more CRM and comms integrations at work.techindika.com. — Pradeep
$80 USD in 7 days
5.0
5.0

Hello, With over 7 years of experience in CRM and PHP, I specialize in building scalable SaaS, fintech, and eCommerce systems with a focus on performance and real-time processing. My expertise includes full-stack development using Node.js, TypeScript, Python, and modern web/mobile apps like React and React Native. I have a strong background in AI systems and designing low-latency architectures for trading systems and data-driven applications. I have carefully understood your requirement for integrating Bitrix24 with Twilio for your real estate agency's customer service system. I am well-equipped to optimize workflows, integrate telephony services, and set up official WhatsApp Business API and SMS capabilities within the CRM. Let's discuss your project further. Please start the chat to explore how I can provide a professional solution tailored to your needs. Thanks.
$80 USD in 7 days
4.5
4.5

Hi, I've extensively worked with Bitrix24 and Twilio, having built optimized CRM workflows and integrated telephony and SMS systems for similar real estate agencies. I can help you set up the sales funnel, automate based on customer behavior, and configure a Twilio number for seamless call and text management. Let's start with a small test task to ensure alignment before diving into Phase 1. Best Regards, Ivica
$80 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 Twilio with a scalable and seamless design. I will deliver: • Configuration and cleanup of the sales funnel in Bitrix24 • Creation of automation rules based on customer behavior • Integration of Twilio for telephony functionality within the CRM • Implementation of WhatsApp Business API and SMS integration via Twilio • Enabling multi-agent feature for two-way chat in Bitrix24 You will also receive technical documentation and support clarity. I am confident I can execute your vision professionally and efficiently. Looking forward to discussing the timeline and next steps. Best regards, Chirag.
$100 USD in 7 days
4.4
4.4

Hi, this sounds like a Phase 1 where the setup has to be clean now so Phase 2 doesn’t become painful later. I can help structure Bitrix24 around a proper sales pipeline, workflow triggers, and Twilio integration for calls, SMS, and official WhatsApp messaging without relying on closed marketplace patches. I’d keep the REST API/webhook layer clear and documented so Retell AI or Botpress can connect later without rebuilding the CRM flow. I’d start by mapping the lead/deal stages and communication rules, then configure Twilio SIP, Messaging Services, and WABA around that structure. The main risk is creating a setup that works today but blocks AI/automation later, so I’d focus on clean endpoints, naming, permissions, and documentation from the beginning. Thanks!
$150 USD in 7 days
3.9
3.9

Leveraging over a decade of experience in web development and software engineering, combined with my deep understanding of CRM systems and RESTful APIs, uniquely positions me to be the ideal candidate for executing Phase 1 of your Bitrix24-Twilio integration project. It is this comprehensive skill set that sets me apart from other contenders. I am no stranger to complex integrations and optimizing CRMs, which will be pivotal in configuring Twilio within Bitrix24, ensuring smooth call flow, and implementing Elastic SIP Trunking with an eye towards future scalability - all without disrupting the existing CRM structure. I have extensive experience using Twilio Console for messaging services and SIP Trunking, skills that will prove incredibly beneficial in connecting your preferred third-party services like WhatsApp Business API (WABA) and SMS via Twilio. Beyond just delivering a project, my commitment is to provide solutions powered by clean codes and clear technical documentation. When we culminate Phase 1 with a pipeline ready for future AI integrations while maintaining digital workflows intact, you're assured that every penny is well-spent on a setup sure to gear up your real estate agency's customer service automation.
$150 USD in 3 days
4.0
4.0

I will configure Bitrix24 sales funnel and create automation rules, then integrate Twilio for telephony and Business API, using REST API and Elastic SIP Trunking for scalability, delivering a clean and open architecture, enabling multi-agent chat and bulk SMS campaigns, I can start right away and deliver a stable solution.
$150 USD in 1 day
4.6
4.6

With a robust expertise in PHP and extensive experience working specifically with the Bitrix24 REST API, I am confident in my ability to execute Phase 1 of your project seamlessly. Having pursued full-stack development for several years, I understand the mechanics of optimizing workflows within a CRM system and can deliver an iterative clean code structure that ensures its scalability for the future. My technical acumen coupled with an experienced eye for detail make me efficient at automation tasks and twinning the nuances of Twilio's SIP Trunking. My competence with Node.js and C# aligns well with your project's requirement of integrating Twilio's Messaging Services and official WhatsApp Business API (WABA) via Twilio. Not only will this connection be smooth, but it will also allow your agents to engage in two-way chat and bulk send Meta-approved WhatsApp templates from Bitrix24, thanks to my existing know-how integrating Bitrix24 with external APIs. Lastly, my passion for delivering all-round excellence means that I will not only bring technical mastery to your project but also a commitment to high-quality code documented in a clear and accessible manner. I pride myself on asset completion before deadlines while consistently exceeding expectations. Let us build the strong foundation needed for Phase 2 now, by entrusting me with your Bitrix24-Twilio Integration project.
$100 USD in 2 days
3.9
3.9

❤️❤️❤️❤️❤️ Hi, Your CRM is disorganized and the single-number channel isn’t yet configured for voice, SMS and WABA, likely due to mixed funnel setups and missing native Twilio SIP/Cloud API links. I will clean and standardize Leads/Deals/Contacts, implement stage-based automation rules and webhooks, and configure Twilio Elastic SIP Trunking plus Cloud WABA and Messaging Services so calls, SMS and Meta-approved WhatsApp templates flow natively into Bitrix24. All integrations use REST APIs and include call recording and multi-agent chat within Bitrix. I built a Bitrix24-Twilio integration for a property firm that added SIP trunking, API-based WhatsApp templates and automated lead routing, reducing response time by 55%. Would you like me to start with a CRM audit and Twilio account review to map required resources? Can you share access levels for Bitrix24 and Twilio, plus any existing SIP/provider details? Best regards, Bohdan
$90 USD in 1 day
3.2
3.2

Hello, As a result of a detailed review of your project requirements, I fully understand the scope and long-term scalability expectations. I have experience with CRM automation, REST API integrations, Twilio-based communication systems, and workflow orchestration projects, and I'm available to start your project right now. I bring strong expertise in Bitrix24 REST API, Twilio, VoIP, CRM Automation, SIP integrations, REST API architecture, and scalable backend workflows. I can help structure Phase 1 with clean native integrations between Bitrix24 and Twilio using REST/webhooks, configure Elastic SIP Trunking, WABA messaging flows, CRM automations, and multi-agent chat while keeping the infrastructure open and scalable for future Retell AI and Botpress integrations. I have a couple of quick answers. • I fully agree with avoiding closed marketplace patches and would structure the system around maintainable API-first architecture. • I can also provide technical documentation covering webhook flows, Twilio configuration, Bitrix automation logic, and future AI integration points. I would be glad to discuss the current Bitrix/Twilio setup and outline the implementation milestones further. Looking forward to hearing from you. Best regards, Carlos
$50 USD in 3 days
2.9
2.9

My advanced proficiency with the Twilio Console and ability to implement features like Elastic SIP Trunking for call recording and scalability makes me an ideal candidate for integrating your telecom infrastructure efficiently. In preparation for your future Phase 2, my coding style firmly adheres to clean, open, and REST API-based architecture principles. I understand the need for retaining code control without any dependencies on third-party solutions that may complicate future AI integration. As such, you can trust that the pipeline we develop will be ready to receive Retell AI's voice systems and Botpress chatbots smoothly. Lastly, my commitment to delivering high-quality work is matched by my drive to continuously improve and learn new technologies. Working with you on this project would provide me with the invaluable real-world experience that I'm eager to gain at this stage of my career. Give me an opportunity and you'll find an exceptional developer fiercely dedicated to providing optimal solutions for your business needs.
$99.99 USD in 1 day
2.8
2.8

I CAN START WORK IMMEDIATELY As an experienced senior developer with expertise in both the Bitrix24 platform and Twilio infrastructure, I believe I'm the ideal fit for your project. I possess deep knowledge of their REST APIs with a remarkable track record of developing clean, functioning code and technical documentation. My ability to modify, configure, and optimize these platforms flawlessly has successfully contributed to businesses scaling their customer service systems through automation. Moreover, my complete ownership approach grants you no surprises or miscommunications; I handle projects autonomously from conception to post-launch monitoring. Engagement with your project goes beyond deployment; I ensure continuous support and flexibility for future upgrades or enhancements. It'll be a privilege for me to put my experience and skills at work for your real estate agency to optimize your CRM workflow efficiently and integrate Twilio services effectively so you can reap maximum benefits from this phase as well as accommodate future progress without requiring any restructuring.
$10 USD in 2 days
2.5
2.5

Hello! This is a solid Phase 1 integration project and I can support you in building a clean, scalable architecture between Bitrix24 and Twilio that won’t block your Phase 2 AI expansion later. I’ll handle proper CRM funnel structuring inside Bitrix24, set up automation rules for lead-to-deal lifecycle, and implement Twilio via SIP Trunking for voice plus Messaging Services for SMS and WhatsApp Business API (Cloud API). Everything will be wired through clean REST/webhook architecture so your future AI agents (Retell AI / Botpress) can plug in without rework. The key focus will be stability, scalability, and “no-marketplace-lock-in” design—fully documented endpoints, event flows, and clear separation between CRM logic and communication layer. I’ve worked on CRM + Twilio automation systems with multi-channel messaging and call routing, and I understand the importance of keeping the infrastructure extensible for AI layers later.
$50 USD in 5 days
2.1
2.1

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