Juan Prieto
@juanprieto
Senior core network engineer specializing in HLR/HSS/UDM, MAP/Diameter signaling, and roaming management.
United StatesWhat I'm looking for
I bring 6+ years of progressive experience in core network engineering, specializing in HLR, HSS, and UDM management within multi-tenant and MVNO environments. I’ve directed end-to-end management of HLR and HSS platforms to maintain 99.99% service uptime for over 10 million subscribers.
I’m at my best optimizing MAP (SS7) and Diameter (S6a/S13) signaling flows, troubleshooting with Wireshark, and improving operational reliability—like reducing roaming authentication latency by 30% and improving incident resolution times by 40%. I also lead integration of Multi-IMSI applets, oversee GSMA IREG/TADIG testing, and automate routine network operations with Python and Bash to reduce manual errors by 35%.
Experience
Work history, roles, and key accomplishments
Directed end-to-end HLR/HSS management for multi-tenant environments, achieving 99.99% service uptime for 10M+ subscribers. Engineered MAP (SS7) and Diameter (S6a/S13) signaling to cut roaming authentication latency 30%, reduced onboarding time for new roaming partners 20%, and improved incident resolution times by 40% using Wireshark-driven troubleshooting.
Software Engineer
Improving
Jan 2019 - Sep 2022 (3 years 8 months)
Supported deployment and maintenance of HLR/HSS systems for MVNO clients to ensure seamless subscriber provisioning and minimize downtime. Automated network monitoring and reporting with Python/Bash, used Wireshark to resolve signaling anomalies, and supported GSMA IREG/TADIG compliance and REST API-based subscriber management.
Assisted with configuration and support of HLR/HSS systems, contributing to SS7 (MAP) and Diameter signaling troubleshooting and integration testing. Developed Python/Bash automation, supported REST API-based network management, and documented processes to aid onboarding and knowledge sharing.
Education
Degrees, certifications, and relevant coursework
The University of Texas at Austin
Bachelor's degree
2014 - 2018
Earned a bachelor's degree from The University of Texas at Austin from Sep 2014 to May 2018.
Availability
Location
United StatesAuthorized to work in
Job categories
Skills
Interested in hiring Juan?
You can contact Juan and 90k+ other talented remote workers on Himalayas.
Message JuanFind your dream job
Sign up now and join over 100,000 remote workers who receive personalized job alerts, curated job matches, and more for free!
