Aashish B Nath A
Technical Product Leader | 5G Core & Policy (PCF/PCRF) | Cloud-Native Packet Core | Kubernetes | End-to-End Call Flow SME | Telecom Solutions Architect
- Role
- Senior Engineer, Systems Architecture at T-Mobile
- Location
- Bellevue, WA, US
- LinkedIn followers
- 500 followers
About Aashish B Nath A
Telecom architect with 10+ years of experience designing, validating, and operating large-scale packet core networks in Tier-1 production environments.Specialized in Policy & Charging (PCF/PCRF), SMF, QoS modelling, and end-to-end 4G/5G core call flows. Strong command over signalling across NAS, NGAP, Diameter (Gx/Gy/Rx), and 5G SBA interfaces (N7/N5/N28 over HTTP/2).Led production-critical architecture initiatives including large-scale policy platform migration using structured move-over logic with zero subscriber session disruption. Delivered 500+ commercial configurations on PCF supporting differentiated QoS, charging triggers, and application-aware policies.Hands-on with cloud-native telecom stacks — Kubernetes-based CNFs, ingress routing, scaling behaviour, latency optimisation, observability (Grafana/log tracing), and geo-distributed traffic control strategies.Operate at the intersection of:• Architecture depth• Production execution• Technical program ownershipCurrently expanding focus toward intelligent network optimisation and data-driven decisioning within cloud-native telecom environments.
Experience
Senior Engineer, Systems Architecture
Sep 2021 — Present · Bellevue, WA, US
Architected and validated Policy Control (PCF/PCRF) and SMF within large-scale packet core networks serving millions of subscribers.Designed and delivered 500+ production-grade policy configurations supporting QoS enforcement, charging triggers, service differentiation, and application-specific control.Led structured policy platform migration ensuring seamless subscriber move-over with zero data session impact.Deep hands-on expertise in 4G/5G call flows including EPS Fallback, VoLTE, WiFi Calling (ePDG), and interworking scenarios.Extensive experience across interfaces: N7, N5, N28, Diameter Gx/Gy/Rx, NAS signalling, NGAP procedures.Conducted latency modelling and traffic redistribution strategies across geo-redundant core sites.Worked on Kubernetes-based containerized network functions (CNFs), ingress routing, scaling strategies, and production debugging via log correlation and monitoring dashboards.Partnered with RAN, transport, charging, and application teams to drive interoperability validation and FOA-based rollout strategy.Owned critical incident analysis, rollback planning, and production stabilisation across distributed core environments.
Education
St. Gabriels High School
High School/Secondary Certificate Programs
2001 — 2006
University of North Carolina at Charlotte
Master of Science (MS), Electrical and Electronics Engineering
2012 — 2014
Kakatiya Institute of Technology & Science, Yerragattu Hillocks, Bheemaram, Hasanparthy, Warangal
Bachelor of Technology (BTech), Electrical, Electronics and Communications Engineering
2008 — 2012
Skills
- Python
- Unix
- Signal Processing
- Mysql
- Linux
- Wireless Networking
- Tableau
- Cloudera Impala
- C
- C++
- Wireless Technologies
- Wireless
- Digital Signal Processors
- Vhdl
- Network Protocol Design
- Perl
- Software Defined Radio
- Embedded Systems
- Systems Design
- Matlab
- Gnu
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