About DJS Telecom

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"Excellence isn't a goal, it's the standard. Every decision I make starts and ends with the customer."

Doug Sadowski is a telecommunications and IT professional with over 30 years of experience. He has worked for many major carriers and helped launch numerous MVNO’s. 

Doug has worked with many different carriers including Tier 1 carriers, billing providers, and MVNOs.

Partners have included:

T-Mobile

Virgin Mobile USA

Sprint

AT&T Wireless

Altice (Optimum Mobile)

AMDOCS

The People’s Operator

Extensive experience in BSS/OSS systems, billing operations, and end‑to‑end service delivery. His career has been spent helping carriers build reliable platforms, streamline operations, and deliver better customer experiences.

Doug specializes in business system implementation, large‑scale migrations, testing, revenue assurance, and operational process design. He brings a hands‑on, customer‑focused approach to every project.

With a seasoned background in BSS/OSS systems, Doug has mastered the full spectrum of billing operations, testing, and end-to-end service delivery from the ground up.