Adrian Bidireanu

I specialize in Direct Carrier Billing (DCB) integrations and backend development, with 6+ years of hands-on experience building and maintaining payment infrastructure, subscription systems, and telecom API integrations across multiple markets.

I have successfully integrated carrier billing flows — including MT, MO, PIN, and oAuth/redirect — with telecom providers across Western Europe (DE, AT, CH), Eastern Europe (RO, BG), Middle East & Africa, and Southeast Asia. I understand the full lifecycle of a DCB integration: from API design and authentication flows, to subscription management, retry logic, error handling, and reconciliation.

On the backend side, I work primarily with PHP and Symfony, building scalable microservices-based architectures, RESTful APIs, and billing infrastructure that handles real traffic reliably and securely.

What I can help you with:

Integrating carrier billing APIs with telecom providers and aggregators

Building or improving subscription and billing infrastructure

Migrating monolithic payment systems to microservices

Troubleshooting and optimizing existing DCB integrations

Technical consulting on DCB flows, market requirements, and compliance

I work with: PHP, Symfony, Laravel, MySQL, Redis, Docker, REST APIs, Jenkins, AWS S3.

If you're building a VAS platform, expanding DCB into new markets, or need someone who already speaks the language of carrier billing — let's talk.