
Closed
Posted
Paid on delivery
My application relies on Telnyx’s Voice and Messaging APIs, with an immediate focus on the SMS and MMS layer. I already have numbers and basic account settings in place, but I now need an expert touch to make everything production-ready and rock-solid. Here is what I want to achieve: • Setting up and configuring the Telnyx SMS/MMS endpoints, webhooks, and authentication so everything is secure and aligned with best practices. • Seamlessly integrating those messaging endpoints into my existing system (Node.js backend and a React front end) while preserving current workflows. • Troubleshooting delivery issues, throughput limits, and any webhook-related quirks, then optimising performance for speed and reliability. Success for me means clean, well-documented code snippets or modules I can drop straight into my stack, clear guidance on any DNS or carrier registration steps, and concise documentation outlining how to monitor, scale, and debug the setup going forward. If you know the Telnyx portal, RESTful endpoints, and callback payloads inside out, I’d like to work with you.
Project ID: 40553269
197 proposals
Remote project
Active 4 hours ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
197 freelancers are bidding on average $437 USD for this job

Hi — Elias here from Miami. I see you're looking for expertise with the Telnyx SMS and MMS APIs. It's clear that you want to enhance communication capabilities within your application. What usually matters most here is ensuring that the integration is not only seamless but also scalable. A common issue in systems like this is managing the complexities of API interactions while maintaining performance and reliability. The tricky part is usually ensuring that the messaging logic accounts for various states and potential failure points. My approach would involve carefully structuring the API calls to handle retries and errors gracefully, while also implementing robust logging for troubleshooting. This ensures maintainability and allows for future enhancements without significant refactoring. I've worked on similar integrations, particularly with RESTful APIs in Node.js, which has equipped me to foresee potential pitfalls. A few questions to better understand the scope: Q1 – What specific user roles will interact with the messaging features? Q2 – Are there any existing backend systems we need to integrate with? Q3 – What are your expectations regarding scaling as user demand increases? Happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.
$500 USD in 3 days
8.0
8.0

Hi there, ★★★ Node.js Expert ★★★ 5+ Years of Experience ★★★ I can help you set up and configure the Telnyx SMS/MMS endpoints, webhooks, and authentication to ensure everything is secure and follows best practices. I will integrate these messaging endpoints into your existing Node.js backend and React front end while keeping your current workflows intact. I'll also troubleshoot any delivery issues, throughput limits, and webhook-related quirks, optimizing performance for speed and reliability. You can expect clean, well-documented code snippets or modules that you can easily integrate into your stack, along with guidance on DNS or carrier registration steps. I'll provide concise documentation on how to monitor, scale, and debug the setup moving forward. Ready to get started!
$250 USD in 5 days
7.8
7.8

Hi there, I have worked extensively on communication platforms involving SMS, Voice APIs, webhooks, and real-time messaging integrations using providers like Twilio, Telnyx, and similar telecom APIs. Since your Node.js backend and React frontend are already in place, a major part of the groundwork is already done. I'll first review your current Telnyx configuration, messaging flow, webhook handling, and authentication setup, then configure the SMS/MMS endpoints properly, resolve any delivery or webhook issues, and optimize the entire messaging pipeline for production use. Along with the implementation, I'll provide clean, reusable modules, proper documentation, and guidance for monitoring, scaling, carrier registration, and debugging so your team can maintain it easily going forward. I have a few questions and I would request we connect once so we can discuss everything in detail. Thanks, Rahul A.
$470 USD in 5 days
7.8
7.8

Hi, I’ve integrated SMS and voice APIs from Twilio, Vonage, and 360dialog into multiple products, so I understand the nuances of working with these services. I can set up webhooks, manage carrier registrations, and ensure everything is production-ready. With my extensive experience in JavaScript frameworks like Node.js and React, I can seamlessly integrate these APIs into your existing product. I’ve also worked with popular CI/CD tools like Jenkins and GitHub Actions, so I can automate testing and deployment for reliable, production-ready code. Let’s schedule a 10-minute call to discuss your project in more detail and see if I’m the right fit. I usually respond within 10 minutes. Best regards, Adil
$464.51 USD in 7 days
7.3
7.3

⭐⭐⭐⭐⭐ Optimize Telnyx SMS/MMS Integration for Reliable Communication ❇️ Hi My Friend, I hope you are doing well. I've reviewed your project requirements and see you are looking for an expert in Telnyx SMS/MMS integration. You have no need to look any further; Zohaib is here to help you! My team has successfully completed 50+ similar projects for API integration. I will ensure secure setup, seamless integration, and troubleshoot any issues to enhance performance. ➡️ Why Me? I can easily manage your Telnyx integration as I have 5 years of experience in API development and system integration. My expertise includes Node.js, React, and handling RESTful APIs. Not only this, I have a strong grip on webhooks, security best practices, and performance optimization. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. Looking forward to discussing this with you in chat. ➡️ Skills & Experience: ✅ API Development ✅ Node.js ✅ React ✅ Telnyx Integration ✅ Webhook Configuration ✅ Security Best Practices ✅ Performance Optimization ✅ Troubleshooting ✅ Documentation ✅ DNS Management ✅ Carrier Registration ✅ Code Snippet Creation Waiting for your response! Best Regards, Zohaib
$350 USD in 2 days
7.7
7.7

Taking a basic Telnyx SMS/MMS setup and making it production-grade is exactly the kind of API integration work I specialize in — I've built similar messaging pipelines with Telnyx and Twilio on Node.js backends. I'll configure your messaging profiles, set up secure webhook endpoints with signature verification, and build clean Express middleware modules that handle inbound/outbound SMS and MMS with proper error handling, retry logic, and delivery receipt tracking. On the React side, I'll integrate the messaging UI into your existing workflows without disrupting what's already working. I'll also troubleshoot any delivery or throughput issues by reviewing your 10DLC/campaign registration status and carrier compliance settings. You'll get well-documented, drop-in Node modules plus clear guidance on DNS, carrier registration, monitoring, and scaling. Can start immediately — just need access to your Telnyx portal and codebase.
$250 USD in 1 day
7.1
7.1

With my extensive background in Network, Cybersecurity, VoIP and system engineering For the past 10 years, my understanding of various tech vendors is unparalleled. Consequently, my adaptability will quickly find synergies between your existing Node.js backend, React front end and Telnyx's Voice and Messaging APIs. Having previously worked with Cisco CUCM,CME , Mikrotik, Ubiquiti to name a few of many relevant companies, I understand both small-scale setups and enterprise solutions. Problem-solving is the essence of my experience. Whether it's configuring the Telnyx SMS/MMS endpoints or handling any throughput limits that may arise, my dedication to ensuring efficient throughput and optimizing performance aligns well with your project aims. My ability to design and recommend solutions based on best practices will be invaluable in setting up secure endpoints and aligning everything with Telnyx's best practices. Beyond mere project completion, I am committed to providing you with clean code snippets that are well-documented making future maintenance tasks easy. I'll also ensure that all the DNS or carrier registration steps are clearly outlined. You will not only get the technicalities from me but also detailed guidance on monitoring, scaling and debugging your setup for better efficiency in the long run. I look forward to collaborating on this project with you!
$500 USD in 7 days
7.1
7.1

Your webhook signature validation is missing, which means any third party can spoof delivery receipts and inject fake messages into your system. This creates both a security hole and unreliable message state tracking. Quick questions - are you handling Telnyx's rate limits with a queue system to prevent dropped messages during traffic spikes? And have you configured failover logic for webhook retries when your endpoint goes down? Here is the architectural approach: - TELNYX API: Implement HMAC signature verification on all inbound webhooks, configure message profiles with proper alphanumeric sender IDs, and set up dedicated connection pools to handle concurrent API calls without hitting rate limits. - NODE.JS BACKEND: Build an event-driven message queue using Bull or AWS SQS to decouple webhook ingestion from processing, ensuring zero message loss during load spikes or temporary outages. - TROUBLESHOOTING: Add structured logging for delivery status callbacks (delivered/failed/undelivered), implement exponential backoff for failed sends, and configure CloudWatch or Datadog alerts for webhook latency above 2 seconds. I've integrated Telnyx for 2 healthcare platforms that process 500K+ messages monthly without delivery failures. Let's schedule a 20-minute call to review your current webhook flow and identify bottlenecks before we build.
$450 USD in 10 days
7.4
7.4

Hi, I can help with your "Telnyx SMS/MMS API Specialist" project. I develop clean, maintainable PHP backends — core PHP and Laravel/Symfony, MySQL schema design, and well-structured REST APIs. For work involving javascript, linux, troubleshooting, node.js, restful, angularjs, api, documentation, I pay close attention to validation, security, and readable code, delivering in small, testable milestones. You'll get clean commits and clear documentation. Can we discuss the specifics before I firm up the timeline? ⭐ 5.0/5 from a recent client: "Very Professional and On time delivery of the project" Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.
$600 USD in 12 days
6.5
6.5

Having utilized Telnyx's Voice and Messaging APIs in numerous previous projects, I consider myself well-versed with the complexities you may face. My 10+ years experience in software engineering, both for web and mobile applications, including hybrid app development using React Native and Flutter guarantees your JavaScript backend and React frontend combination will be seamlessly blended with the Telnyx API. I will ensure all the numbers, endpoints and authentication are set up meticulously, keeping security a priority while preserving your current workflows. Moreover, my work doesn't end once the integration is complete - I go an extra mile to troubleshoot any issues or limitations that may occur. This includes optimizing performance for speed and reliability, monitoring at every stage and scaling as per requirement. My proficiency extends up to documentation; hence you can expect clear instructions on DNS and carrier registration steps along with well-documented code snippets for your future reference. In conclusion, my wide-ranging skillset which includes familiarity with RESTful endpoints, callback payloads, Telnyx portal along with my dedication to producing clean code make me your ideal fit for this project. Partnering with me guarantees not just project completion but outstanding post-project support as well
$500 USD in 7 days
6.6
6.6

Hi, I can help make your Telnyx SMS/MMS layer production-ready across your Node.js backend and React frontend, with secure endpoints, verified webhooks, proper authentication, and clean integration into your existing workflows. I’d start by reviewing your current Telnyx numbers, messaging profiles, webhook URLs, API keys, and delivery configuration. Then I’d implement or refine Node.js modules for sending SMS/MMS, receiving inbound messages, handling delivery receipts, validating webhook events, logging failures, and retrying safely where appropriate. I can also help troubleshoot delivery issues, carrier registration requirements, throughput limits, media handling, and callback quirks. On the frontend, I’d keep the React changes minimal: status display, message history, error states, or send controls only where needed. Deliverables would include documented code snippets/modules, `.env` guidance, webhook setup notes, DNS/carrier registration checklist if applicable, and a short monitoring/debugging guide for scaling and production support. Question 1: Are you using Telnyx Messaging Profiles with 10DLC/brand registration already completed? Question 2: Do you need two-way messaging in the UI, or only outbound messages plus webhook logging? Regards, Houssame
$500 USD in 7 days
6.2
6.2

Hi, I’d be glad to help make your Telnyx SMS/MMS integration robust and production-ready. I have extensive experience working with Telnyx APIs, especially in configuring secure endpoints, webhooks, and optimizing messaging workflows. I can deliver clean, modular code snippets compatible with your Node.js backend and React front end, along with step-by-step guidance on DNS setup and carrier registration. Troubleshooting delivery issues and webhook quirks is my strength, and I will ensure your system runs smoothly with clear documentation on monitoring, scaling, and debugging. My approach is to align with best practices to maximize reliability and security while keeping the setup simple and maintainable. I will review your current configuration, suggest improvements, and implement necessary adjustments for performance and stability. Let’s create a seamless, scalable messaging solution tailored to your needs. Best, Justin
$500 USD in 5 days
6.0
6.0

Hello, I hope this message finds you well. I have a solid understanding of the Telnyx SMS/MMS API and am well-versed in setting up and configuring endpoints, webhooks, and authentication to ensure top-notch security and adherence to best practices. My expertise lies in seamlessly integrating messaging endpoints into existing systems, specifically with Node.js backend and React frontend, while maintaining current workflows. My approach involves structured requirement confirmation, controlled planning, clean implementation, and thorough testing to ensure optimal performance. Milestone-based transparency is key to keeping you informed every step of the way. With a strong background in JavaScript and Linux, I am confident in my ability to deliver reliable results that align with your business objectives. You can find examples of my past work in my portfolio: ⭐⭐ https://www.freelancer.com/u/CodeAnchors ⭐⭐ Could you please share your top priority or business goal for this project? I would love to discuss how we can finalize the scope together. Feel free to open a chat at your convenience. Best regards, Muhammad Anas Khan
$250 USD in 4 days
5.7
5.7

Hello! We can help you make the Telnyx messaging layer production-ready. 1. Do you already have the webhook and messaging flow wired in your backend? 2. Which delivery or reliability issues should we tackle first? — About us We are dZENcode – a full-cycle IT company for digital product development: from design and programming to integrations and post-release support. We build projects from scratch and also work on existing solutions that need further development, improvements, or technical support. You can find detailed information about our services and rates on our official website: https://dzencode.com. Please review it – after that, we can discuss the details and agree on the next step. ⚠️ After clarifying all details, we will define the scope, the suitable cooperation format – task-based, outsourcing, or outstaffing – and the final cost. Projects are guaranteed to reach release with us: • 10+ years providing IT services; • 90+ in-house specialists; • 250+ public reviews since 2015; • We support products under SLA after launch; • We work under NDA and a company contract!
$500 USD in 7 days
6.3
6.3

With my 10+ years of experience building robust and scalable software, your Telnyx SMS/MMS API needs are in the hands of a pro. My in-depth knowledge of the Telnyx portal, RESTful endpoints, and callback payloads will ensure that every aspect of your messaging solution is set up correctly and aligned with industry best practices for optimum security. Working within your existing technology stack (Node.js backend and React front end), I'll seamlessly integrate the Telnyx SMS/MMS endpoints, webhooks, and authentication. Furthermore, I'll not only address any potential issues like delivery problems or throughput limits but also optimize performance to ensure utmost speed and reliability. What distinguishes me from other freelancers is not only my comprehensive technical skills but also how we work together as a team. Here at my company, we offer you an entire full-stack engineering team dedicated to your project from beginning to end, no mid-project handoffs. Additionally, we pride ourselves on excellent communication and timely responsiveness with clients during U.S. business hours via our shared Slack channel.
$500 USD in 7 days
5.8
5.8

As a full-stack development team, we have leveraged our expertise in **API Development & Integrations** in various projects, including working with Telnyx’s Messaging APIs. We not only have a deep understanding of the Telnyx portal, RESTful endpoints, and callback payloads but also bring onboard additional skills crucial to your project success. Our experience in **Web Development** will ensure an integration that seamlessly aligns with your existing Node.js and React stack without disrupting workflows. Moreover, I believe my **Cloud & DevOps** knowledge in AWS, Docker, Kubernetes combined with my problem-solving abilities will be instrumental in troubleshooting any delivery issues, throughput limits, or webhook-related quirks. I'm dedicated to ensuring clean and maintainable code that is well-documented, so you can easily monitor, scale and debug the setup going forward. Overall, I offer you a robust blend of technical skills, critical thinking mindset and business-first approach. Let's drive your application towards high performance and reliability together. Looking forward to discussing more about your project and how I can be your dedicated Telnyx SMS/MMS API specialist.
$250 USD in 7 days
5.8
5.8

The biggest risk in Telnyx SMS/MMS work is leaving webhooks and throughput as afterthoughts: mis-signed callbacks or a poor retry/backoff strategy is what turns “works in dev” into missed messages and angry users in production. You already have numbers and basic account settings, so I would harden the messaging layer first and then wire it into your Node.js backend and React front end without changing existing workflows. My approach: secure and configure Telnyx messaging endpoints and callbacks using Telnyx signature verification, rotating API keys, least-privilege credentials, and HTTPS-only webhook endpoints. On the Node side I will provide a small middleware module for webhook verification, idempotency handling, and graceful retries. For delivery and throughput I will audit current send patterns, implement rate limiting and batching strategies, and add monitoring hooks for delivery receipts and latency. I will document any required carrier work such as US 10DLC/campaign registration or number provisioning steps and the DNS or compliance items you must complete. Final delivery includes clean, drop-straight-into-your-stack code snippets, short integration notes for the React front end, and a concise monitoring and debugging playbook. Relevant project: I built the telecom-aware backend for Velocity IQ, which required handling high-volume telecom data models, strict delivery SLAs, and integrations across REST APIs. That work mirrors the throughput, reliability, and observability goals you described. Deliverables, timeline, price: - Deliverables: webhook security module, Node integration snippets, delivery troubleshooting report, carrier/DNS checklist, short monitoring doc - Timeline: 5 to 8 business days - Fee: $500 Can you grant read+API access to your Telnyx portal and a link to your staging Node repo or deployment so I can run an initial webhook and throughput audit?
$500 USD in 7 days
5.3
5.3

Hi, I'm excited about your project Telnyx SMS/MMS API Specialist because healthcare platforms require security, reliability, and an excellent user experience. With strong expertise in JavaScript, Node.js, AngularJS, I can develop a modern telemedicine application with doctor profiles, appointment management, secure consultations, e-prescriptions, patient records, payment gateways, and role-based access. My goal is to build a scalable platform that enhances patient care while making healthcare services more accessible. I look forward to working with you.
$600 USD in 14 days
4.9
4.9

It sounds like you already have the foundation in place, and the real challenge now is making the messaging layer reliable enough for production rather than just getting messages to send. I’d start by reviewing your current Telnyx configuration, webhook flow, and authentication to identify anything that could cause delivery or callback issues. From there, I’d integrate the SMS/MMS endpoints into your existing Node.js backend without disrupting the React workflow, then validate inbound and outbound events with proper signature verification, retries, and idempotent webhook handling so duplicate callbacks don’t create inconsistent state. After that, I’d focus on throughput, delivery diagnostics, and monitoring, while documenting the carrier registration and DNS requirements so future maintenance is straightforward. I recently worked on a Python/PHP API integration where reliability and callback handling were the priority, so this type of production hardening is familiar territory. One question: are you already using Telnyx Messaging Profiles, or is that still part of the setup? I can get started right away.
$500 USD in 7 days
4.9
4.9

You want the Telnyx SMS/MMS setup secure, smooth, and reliable. I’ve worked with Telnyx APIs before, helping a client integrate their messaging into a Node.js backend and React front end without disrupting existing flows. I’ll start by locking down webhook authentication and endpoint configuration, then carefully embed the messaging code so it fits your current system. Have you noticed any patterns in your delivery issues or throughput hits? Sometimes rate limits or carrier restrictions need fine-tuning at the Telnyx portal or DNS level. I’ll troubleshoot those and suggest improvements like retry logic or batching to boost speed and reliability. I’ll give you neat, modular code you can plug straight in, plus clear docs for monitoring and scaling. Ready to dive in and get your SMS/MMS setup rock-solid and production-ready.
$750 USD in 7 days
5.1
5.1

Brooklyn, United States
Member since Jul 1, 2026
$250-750 USD
₹150000-250000 INR
₹12500-37500 INR
₹1500-12500 INR
$30-250 USD
$250-750 SGD
₹1500-12500 INR
₹750-1250 INR / hour
₹1500-12500 INR
$15-25 USD / hour
₹75000-150000 INR
$250-750 USD
$3000-5000 USD
₹600-1500 INR
₹12500-37500 INR
₹400-750 INR / hour
₹12500-37500 INR
$30-250 USD
$250-750 CAD
₹12500-37500 INR