March 7, 2025 3 min read

Software Service & Innovation: Building a High-Load SMS & Mobile Payment Gateway for Echovox

At Software Service & Innovation (SSI), we specialize in developing scalable, high-performance platforms that power mission-critical telecom and fintech solutions. As a trusted development partner, we provide expertise in high-load systems, secure messaging, and mobile payments, ensuring seamless and reliable operations. Our collaboration with Echovox, a European leader in mobile monetization and SMS authentication, is a testament to our ability to build resilient and future-proof platforms.

Echovox: Powering Mobile Payments & Secure Messaging Across Europe

For over 20 years, Echovox has been at the forefront of mobile payment and messaging, enabling businesses to monetize audiences, facilitate transactions, and provide secure SMS authentication. The company’s platform processes millions of SMS messages daily, supporting banks, e-commerce sites, media companies, and mobile virtual operators.

The Challenge: Rebuilding a High-Performance SMS Gateway from Scratch

Following the acquisition of its former SMS platform provider Zong by PayPal, Echovox needed an entirely new, high-load SMS Gateway MVP—one that could:

Process high-volume SMS traffic efficiently (500 SMS/sec, 50M SMS/day).
Support SMS-based 2-factor authentication for banks and e-commerce businesses.
Enable large-scale SMS campaigns for major media companies (e.g., during live TV shows).
Be scalable to support future features and geographic expansion.

SSI’s Approach: A Scalable, Secure & Reliable Architecture

To meet Echovox’s urgent needs, SSI assembled a team of 15+ specialists to develop a fully scalable, fault-tolerant, and high-performance SMS Gateway and Mobile Payment Platform.

1. SMS Gateway Messaging Platform

A distributed software architecture based on microservices, ensuring:

High-Load Capacity – Processing 500 SMS/sec and 50M SMS/day for authentication and marketing campaigns.
Load Balancing & Fault Tolerance – Ensuring continuous uptime, even under extreme loads.
Multi-Operator Connectivity – Supporting 100+ mobile operators worldwide with custom protocol integrations.
Scalability – Designed to grow with new features, markets, and SMS traffic without redevelopment.

2. Mobile Payment Gateway

A secure, fast, and flexible payment platform, offering:

A Unified API for Merchants – A single integration for multiple mobile operators across Europe, simplifying payment processing.
Seamless Payment Journeys – High-performance transactions with minimal latency, ensuring higher conversion rates.
Secure Architecture – End-to-end encryption and compliance with telecom and financial industry standards.
Scalability & Load Balancing – A microservices-based distributed architecture to handle increased demand and expansion.

Why Businesses Choose Echovox

With SSI’s expertise, Echovox now operates a robust, scalable, and high-performance mobile payment and SMS authentication platform, serving:

Banks & E-commerce Platforms – Secure 2-factor authentication to protect customer transactions.
Large Media CompaniesReal-time audience engagement via SMS during major TV and radio broadcasts.
Merchants & Content Providers – Seamless mobile payment processing across multiple operators and countries.

SSI: A Development Partner You Can Trust

At SSI, we specialize in building secure, high-performance platforms for fintech, telecom, and mobile monetization. By extending Echovox’s development team, SSI helped build a scalable, high-load messaging and mobile payment gateway—ensuring reliability, performance, and security for millions of transactions.

With Echovox, supported by SSI’s talented developers, businesses can streamline SMS authentication, scale mobile payments, and drive revenue growth—all on a secure and future-proof platform.

Looking to develop a high-load fintech or telecom solution? Partner with SSI and unlock the future of secure, scalable messaging and payments!

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