Legos

Legos is a global telecommunications platform provider covering 110 countries. Its platform carries 1.2 billion minutes and 360 million SMS a year for 100+ operators, offering white-label voice, messaging, mobile, and data services.

Thousands of live customers depended on that infrastructure around the clock, across many vendors' equipment and protocols.

• I managed the critical infrastructure of the Full MVNO platform end to end: 4G, SIP core, SMS, MMS, roaming, fraud detection, and traffic analytics.
• I integrated open-source telecom components: Kamailio, FreeSWITCH, and SMPP gateways.
• I worked with Cisco, Sonus, RedHat, Italtel, Dialogic, and VMware on integration and maintenance.
• I was on a 24/7 on-call rotation with a team of four engineers, handling incident response for thousands of live customers.

• Open-source components (Kamailio, FreeSWITCH, SMPP gateways) alongside vendor equipment

  Why: flexibility where vendor systems fell short

  Cost: more integration work across systems that each interpret the standards slightly differently.

• Designing for graceful degradation over trying to prevent every failure

  Why: a fix at 3am has to take minutes, not hours

  Cost: more effort spent on failure paths than on the happy path.

The platform served 100+ operators across 110 countries, carrying 1.2 billion minutes and 360 million SMS a year, with partners including Sinch, Ringover, and Trustteam.

PHP · NodeJS · Perl · Bash · C · MySQL · PostgreSQL · VMware · RedHat

Telecom infrastructure is where I learned that reliability isn't about avoiding failure, it's about recovering fast. Managing 24/7 systems for thousands of live customers taught me to design for the 3am page, not the happy path.