Samar Singh Billawaria

Design Verification Leader

AI and mobile SoCs, HBM4E and UCIe chiplets, AI-driven verification, physical AI and robotics

Bengaluru, Indiabills23@gmail.comlinkedin.com/in/samar-singh-60841a14

github.com/samar-singh

Cross-coverage. Ten verification disciplines against six employers: where I led or owned the work, and where I did it hands-on.
DisciplineIntel
07-12
AMD
12-15
Aricent
15-18
Sevitech
18-19
WD
19-23
Samsung
23-now
Evidence
CPU subsystems and architecturex86 uArch and PSMI; ARM BFM and CREST; RISC-V and AI multi-CPU SoCs
Memory and controllersFBD2, DDR3; client SoCs; Flash; HBM4E, DFI, memory controller
High-speed interconnectPCIe Gen3; NorthBridge; PCIe, SATA, SD Express; UCIe, D2D, CTPHY
Low-power verificationPMI at AMD; low-power Wi-Fi IoT; UPF and PG-pin at Sevitech, WD and Samsung
Testbench architectureC++ replay tools; UVM; Specman migration
Emulation and FPGAEmulation regression automation; FPGA-based DV
GLS and post-siliconSighting reproduction; LoopBack; GLS; tester patterns; GLS bring-up 50% faster
Coverage closure and sign-offUVM coverage; toggle coverage; planning to tape-out; coverage closure
Team, vendor and budget leadershipClient delivery; budgets and hiring; multi-vendor teams; 27 engineers
AI-driven verificationLLM agents: planning 70% faster, GLS bring-up 50% faster
Led or ownedHands-onNot part of the role
22+ yearsin semiconductors, since 2004
2nm to 22nmprocess nodes, Samsung to Intel
4 CPU ISAsx86, ARM, RISC-V, ARC
9 SoCstaken to production
27 engineersled today, including vendor teams

Experience

Associate Technical Director

Jul 2023 - Present

Samsung India Research, Bengaluru

Technologist

Sep 2019 - May 2023

Western Digital, Bengaluru

Technical Manager

Apr 2018 - Aug 2019

Sevitech Systems, Bengaluru

Senior Technical Specialist

Oct 2015 - Apr 2018

Aricent Technologies, Bengaluru (now Capgemini Engineering)

Member of Technical Staff

Jun 2012 - Oct 2015

AMD, Bengaluru

System Validation Engineer

Jun 2007 - Jan 2012

Intel, Bengaluru

AI-driven verification

Early career

Skills

Verification
SystemVerilog, UVM, OVM, Specman e, Vera, C, C++, Python (cocotb, pyUVM), Perl; x86, ARM, RISC-V and ARC assembly
Flows
Coverage-driven verification and closure, power-aware verification (UPF, PG-pin), gate-level simulation, FPGA prototyping, emulation (ZeBu), post-silicon debug, tester patterns, C-based firmware tests
Interfaces
HBM4E, UCIe, D2D, DFI, PCIe, SATA, SD, SD Express, NVMe, DDR2, DDR3, Flash, AHB-Lite, Intel QPI
Architecture
x86 (Intel, AMD), ARM, RISC-V, ARC; microarchitecture, caches, performance monitoring, UltraSoC debug
Tools
Cadence Xcelium, Synopsys VCS, Synopsys ZeBu, GDB, logic analyzers, Intel ITP
AI
LLM agent workflows, retrieval-augmented generation (RAG), LLM fine-tuning, context engineering, multi-agent coding, test-plan generation, failure triage
Physical AI
Robotics, robot hand design, vision-language-action (VLA) model training; IIT Delhi Advanced Robotics program, 2026
Leadership
Verification strategy and sign-off, hiring and team building, multi-vendor management, budgets and resource planning, Agile and Scrum

Education

Languages: English, Hindi, Dogri, French. Interests: Robotics and drones, strength training, travel.

Ask about my work

What does Samar do today at Samsung?

Samar is an Associate Technical Director at Samsung India Research in Bengaluru, since July 2023. He leads SoC and IP design verification for multi-die, multi-CPU AI and mobile SoCs, including 2nm Exynos and memory programs. He sets the verification strategy and drives coverage closure to sign-off, aiming for first-pass silicon.

How big is the team he leads?

Samar leads a 27-engineer cross-functional team today, including vendor teams.

How many SoCs has he taken to production?

Nine SoCs. His career runs from 2004 to today, and the work covers verification strategy, coverage closure and tape-out sign-off through to production silicon.

What is his scope on custom HBM?

Samar owns the India DV teams' verification for all custom HBM SoCs, covering HBM4, HBM4E and HBM5. He is responsible for SoC, IP and subsystem DV for internal and external customers, across the UCIe, D2D and DFI interfaces, CTPHY high-speed interconnect IP and the HBM memory-controller subsystem.

How has he used AI in verification?

Samar brought LLM-agent workflows into the Samsung verification flow, with three results: verification planning for late IP additions is 70% faster, GLS bring-up is 50% faster, and coverage implementation for new customer requirements is 70% faster. He also enables the team's use of these LLM agents and trains them on best practices for using LLMs in co-development.

What did Samar own at Western Digital?

From September 2019 to May 2023 Samar led end-to-end verification of multi-CPU storage SoCs with RISC-V CPUs and UltraSoC RISC-V debug, across SD, SD Express, PCIe and SATA interfaces. He ran the full flow: verification planning, SoC simulation, FPGA-based verification, gate-level simulation, and post-tape-out tester-pattern delivery and debug.

Which CPU architectures has he verified?

Four: x86, ARM, RISC-V and ARC. His skills include assembly for all four.

What did he do on AMD's first ARM client CPU?

At AMD, Samar verified the NorthBridge IP for AMD's first ARM-based client CPU, building ARM CPU BFM stimulus and UVM sequencers, checkers, monitors and scoreboards. He also ported the x86-only verification infrastructure to ARM, so legacy IP could be verified with ARM stimulus.

What tooling did he build at Intel?

At Intel, as an individual contributor, Samar built the C++ toolchain for platform trace capture and emulation replay, used to reproduce post-silicon sightings on 8-, 10- and 15-core server processors. He also wrote the x86-assembly PSMI handler for microarchitectural state dumps, which became the tool of choice for sighting reproduction. He implemented automation of the silicon-emulation regression flow to 80% coverage of target test content, and sped up emulation by 7%.

What was his IIT Delhi robotics project?

Samar completed the IIT Delhi Advanced Robotics program in 2026 and received the Best Project Award. The project was a physical AI project: a robot hand with vision-language-action (VLA) model training.

How does he work with vendors, budgets and hiring?

Samar has managed consultant teams from multiple vendors end to end, from hiring and people management to vendor relations and approval of vendor purchase invoices, and has estimated and allocated program resources. At Sevitech Systems he owned project budgets, equipment purchasing and hiring, and wrote DV plans and resource estimates for complex new client SoCs.

Which parts of the verification flow has he covered?

Coverage-driven verification and closure, power-aware verification (UPF, PG-pin), gate-level simulation, FPGA prototyping, emulation (ZeBu), post-silicon debug and tester patterns, and C-based verification in which test cases are loaded into CPU memory and executed as firmware. He works in SystemVerilog and UVM, and also in OVM, Specman e and Vera.