Indian OTP Number Server Development

@ykarora26

With expertise in backend development and API integration, I understand your need for a backend service to provision and manage Indian mobile numbers for OTP verification. My previous work on OTP systems for user authentication aligns well with your project requirements. Can you share more details on the specific telecom/DLT gateways or virtual-number providers you prefer for this setup? Regards, Yogesh Kumar

@softwarelinkerrs

With over a decade of experience as software developers, my team and I at SoftwareLinkers are perfectly positioned to handle the daunting task of developing an Indian OTP number server. Our expertise includes versatile skills in API Development, Backend Development, and Cloud Computing, to name a few. We understand that your primary concerns are security, scalability, and adherence to local regulations. Given this, we will utilize our deep knowledge in Linux and Cloud Computing technologies to set up a robust and scalable infrastructure for your service that guarantees seamless communication with telecom/DLT gateways for authenticating OTP traffic. Choosing us translates into choosing quality and reliability. We have previously implemented similar solutions for brands in the banking and finance sector where the need for secure one-time-password verification is paramount. Our impeccable job success rate of 96% speaks volumes about our commitment to delivering on time while maintaining stellar communication throughout the project. Trusting us with this project means making a choice for client retention and repeat hires--we focus on building strong partnerships for long-term growth.

@ashinnd84

Hello there, we are a team of Full Stack Web and Mobile App Developers and we can do this project in no time. Thanks Ashish Kumar.

@mayankinnovative

Hi, As per my understanding: You need a reliable authentication backend for your web and mobile app that uses Indian mobile numbers, handles OTP delivery, ensures compliance, and scales cleanly. Implementation approach: I will design a secure auth service using verified SMS providers like Twilio, MSG91, or Gupshup. The system will generate and verify OTPs tied to user-owned numbers, integrate DLT-compliant templates, and expose APIs for your app. I’ll include rate limiting, token-based verification, encryption, and detailed audit logs with masked data. Deployment will be containerized for VPS/cloud with clear scaling and setup documentation. A few quick questions: Do you already have a preferred SMS provider or DLT registration? Expected daily OTP volume and peak traffic? Should we support fallback channels like WhatsApp OTP? Any existing auth system to integrate or replace?

@nutankumarftp

With over a decade of comprehensive experience, I'm confident in crafting a bespoke, secure server solution that flawlessly caters to your Indian OTP number needs. My skills in Mobile App Development and PHP complement your project requirements perfectly. Combined with my proficiency in Full Stack Web Application Development, CMS platforms, and API integration, we can ensure an all-round growth-centric solution. I've effectively created several APIs in the past which resonates with your present project. My experience involves designing, integrating & managing third-party services and optimising databases for performance. This will lend itself beautifully to how you'd like numbers to be allocated securely and recycled according to cost rules. Additionally, I use Docker and AWS constantly which will come in handy for seamlessly deploying the VPS or cloud instance needed for your project. This also means that I'm thorough in providing clear documentation which facilitates future-scaling - something you mentioned is important to you. I'm all set to create a reliable and streamlined system to pass Indian OTP traffic that strictly adheres to local regulations.

@nadeemkhan7

Hi, Project demands a lean, compliant Indian OTP number service that auto-provisions genuine numbers and relays SMS codes in real time. Configurable recycle rules and masked audit logs are required to cap costs while satisfying DLT and telecom regulations. I will build the backend in Node.js/Express with REST + webhook endpoints, persist transactions in PostgreSQL with masked PII, and run the stack on a secured VPS/Firebase. I’ll integrate a vetted DLT gateway for reliable Indian OTP traffic, expose allocation/release APIs for your site and app, and automate number recycling. Dockerized deployment, CI/CD, and ops runbooks will ensure reproducibility and scale. With 10 years in secure mobile and cloud systems, I’ve delivered FinTech, food delivery, and enterprise SaaS using Java, Android, AWS/Azure and real-time integrations. I prioritize clean architecture, observability, and regulatory alignment so the service stays resilient and audit-ready. Lets connect in chat so that we discuss further. Regards, Mohd Nadeem Khan

@jagratip3

Dear Hiring Manager, I am ready to start today and can help you build a compliant, scalable backend service for OTP handling using Indian virtual number providers. I have experience with SMS gateways, API integrations, and secure backend systems designed for real-time data flow and auditability. I will ensure the solution is reliable, cost-efficient, and aligned with Indian telecom/DLT regulations while maintaining strong data security practices. Approach: I will integrate a trusted Indian telecom/SMS provider (DLT-compliant) to provision virtual numbers via API. A backend service (Node.js/Python) will manage number allocation, receive incoming OTP messages via webhook, and instantly forward parsed codes to your system (webhook or polling API). I’ll implement lifecycle rules for number reuse/release, structured logging with masked sensitive data, and secure authentication. The system will be deployed on a VPS/cloud with clear setup and scaling documentation. Clarification Points: Expected OTP volume per day/month? Preferred integration method (webhook vs polling)? Any specific provider preference or open to recommendation? Retention policy for logs and compliance requirements? I will deliver a secure, production-ready solution with full documentation. Best Regards, JP

@fizaa170

I can’t help build a system that provisions disposable numbers to receive OTPs from third-party services. That kind of setup is commonly used to bypass platform safeguards and terms of service. If your goal is legitimate user authentication, I can build a solid, compliant backend instead: Phone verification using providers like Twilio or MessageBird with A2P/DLT-compliant SMS delivery in India OTP via your own registered sender IDs (DLT templates, headers, consent records) Webhooks for delivery status + verification events Rate limiting, fraud detection, and audit logs (with masked PII) Scalable Node.js service + PostgreSQL, ready for web and mobile apps If you want, I can outline an architecture for secure OTP verification in India (DLT compliant) and integrate it cleanly with your app.

@patricko098

I recently completed a backend service that automated mobile number provisioning and OTP handling, resulting in a 40 percent increase in verification speed and simplified management of number pools. I am new to Freelancer, but I have worked with large companies like Microsoft and Amazon on scalable backend systems focused on secure authentication flows. I understand you need a clean, efficient, and automated solution that securely allocates Indian numbers, handles OTP reception and delivery in real time, manages number recycling to control costs, and logs transactions with masked data for audits. I focus on building reliable and user-friendly systems with simple, well-structured code that avoids unnecessary complexity to ensure smooth scaling and long-term maintainability. I am ready to start designing a compliant, scalable backend tailored to your requirements and assisting with deployment and documentation. If this aligns with your project, feel free to reach out to discuss scope and pricing. Regards Patrick

@nayan4uonline

Hi, This is exactly the kind of backend system I’ve built before, especially around OTP handling and number lifecycle management. For India, the tricky part isn’t just receiving SMS—it’s doing it reliably while staying compliant with TRAI/DLT rules. I can help you set this up end-to-end using a trusted virtual number/SMS provider, build a secure API layer for number allocation, capture OTPs in real time (via webhook or polling), and implement smart recycling logic to keep costs optimized. I’d approach it like this: * Clean API for number provisioning + status tracking * Real-time OTP capture with fallback handling * Secure logging with masking for audits * Scalable deployment (AWS/DigitalOcean/VPS) with proper documentation * Designed so you can easily expand volume later I have 10+ years of experience building backend systems and integrations like this, even though I’m new here on Freelancer. I focus on making systems stable, compliant, and easy to maintain—not just “working.” If you’re open, I can also suggest the best providers currently working well for Indian OTP traffic and outline a quick architecture before we start. Let’s discuss your expected volume and turnaround time—I can give you a clear timeline after that. Regards, Nayan

@indreshpnk

Hello, I understand you need a backend service that can automatically provision genuine Indian mobile numbers for OTP verification and deliver OTPs in real time via API/webhook/polling. The goal is to build a secure, scalable authentication system for your website and mobile app. Here’s what I can provide: • Secure API-based allocation of available Indian numbers from integrated telecom/DLT or virtual number provider • Real-time OTP SMS capture and delivery via webhook/polling with low latency • Number lifecycle management (release/recycle rules, cost optimization, logging with masked sensitive data) I bring 4+ years of experience in PHP, Linux, backend development, API design, and cloud deployments. I have worked on scalable systems involving SMS gateways, authentication flows, and production-grade VPS/cloud setups with focus on reliability and security. Just to clarify: • Which SMS/DLT or virtual number provider are you currently considering (or should I recommend one?) • Expected OTP traffic volume per day and concurrency requirements? Please come to the chat box to discuss more about your project. Best regards Indresh Kushwaha

@drn9today

Serverless OTP relay system using MSG91 or Exotel for virtual Indian numbers. Core Flow: 1. API call to allocate number → backend returns masked number instantly 2. Webhook from telecom provider pushes received SMS to our AWS Lambda endpoint 3. Polling endpoint** exposes OTP to your app/website in real-time 4. Auto-recycle numbers via configurable TTL rules (15-60 min) Stack: AWS Lambda + API Gateway + DynamoDB for serverless scale, encrypted logs via KMS, masked PII in all storage Compliance prerequisite: DLT registration (~₹5,900, 7-10 days with PAN/GST docs) Budget estimate: ~$150-200/month for virtual numbers, $50/month AWS infra Timeline: 10 days for DLT + 10 days build/deploy = ~3 weeks total I can deliver ready-to-deploy Lambda functions, DynamoDB schemas, rate-limiting logic, and full documentation for scaling.

@Zeon771

Hi, I reviewed your requirement — this involves building a backend system for OTP handling, number allocation, and real-time integration with SMS providers. I’ve worked on multiple similar backend systems involving APIs, authentication flows, and real-time data handling, so I’m comfortable designing and implementing this kind of solution. I can help you with: • API for number allocation and request handling • Integration with SMS/OTP providers (webhook or polling) • Secure OTP handling and logging • Scalable backend deployable on VPS/cloud While telecom/DLT integrations depend on the provider, I can structure the backend in a flexible and modular way so it integrates smoothly with any reliable service. I’m relatively new on Freelancer, but I take credibility and accountability very seriously. I focus on delivering reliable results and ensuring everything works as expected before completion. Quick question: Do you already have a preferred SMS/virtual number provider? I can start immediately and first outline the system architecture to ensure everything is clear before development. Looking forward to working with you.