CPU Design Verification Engineer

SiFive, Inc.; Hyderabad; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

SiFive, Inc. is searching for a Senior / Staff / Sr. Staff Engineer in Hyderabad, India, to lead verification strategies for out-of-order CPU cores and mentor junior DV engineers. You'll architect System Verilog/UVM testbenches, manage complex debug tasks, and collaborate with cross-functional teams to ensure correctness.

The ideal candidate has a Bachelor's or Master's in Engineering with over 5 years of experience in the field. Join us to drive innovations and make a significant impact in chip design.

Qualifications

• 5+ years of experience in design verification.
• Strong knowledge of OOO CPU architecture.
• Experience in debugging and teamwork skills.

Responsibilities

• Own verification strategy for major core blocks.
• Architect and implement UVM testbenches.
• Mentor junior DV engineers and influence practices.

Skills

Verification strategy

Debugging complex failures

UVM testbenches

OOO core subsystems

Education

Bachelor's or Master's in Engineering

Tools

System Verilog

UVM

Job description

## Senior / Staff / Sr. Staff Engineer - Design VerificationApplylocations: Hyderabad, Indiatime type: Full timeposted on: Posted Todayjob requisition id: R-101374## ****About SiFive*****As the pioneers who introduced RISC-V to the world, SiFive is transforming the future of compute by bringing the limitless potential of RISC-V to the highest performance and most data-intensive applications in the world. SiFive’s unrivaled compute platforms are continuing to enable leading technology companies around the world to innovate, optimize and deliver the most advanced solutions of tomorrow across every market segment of chip design, including artificial intelligence, machine learning, automotive, data center, mobile, and consumer. With SiFive, the future of RISC-V has no limits.*At SiFive, we are always excited to connect with talented individuals, who are just as passionate about driving innovation and changing the world as we are. Our constant innovation and ongoing success is down to our amazing teams of incredibly talented people, who collaborate and support each other to come up with truly groundbreaking ideas and solutions. Solutions that will have a huge impact on people's lives; making the world a better place, one processor at a time. Are you ready? To learn more about SiFive’s phenomenal success and to see why we have won the GSA’s prestigious Most Respected Private Company Award (for the fourth time!), check out our website and Glassdoor pages.**Job Description:**As part of complex out‐of‐order (OOO) CPU cores verification, we are looking for the role, where you will own verification strategy, methodology, and execution for major core blocks, drive coverage and sign‐off, and act as a technical leader and mentor within the DV team.**Key Responsibilities****Education & Experience:*** 5+ Years of experience with Bachelor's or Master's in Engineering**Technical Ownership*** Own DV for major OOO core subsystems such as: + Front‐end: fetch, branch prediction, instruction decode. + Rename / register mapping and dependency tracking. + Issue queues / schedulers, execution units, bypass networks. + Reorder buffer (ROB), retirement, exceptions, interrupts, and pipeline flush/replay. + Load‐store unit (LSU), store buffer, atomics/LR‐SC, fences, speculative loads/stores. + L1 caches, TLBs, MMU interfaces, and coherence/protocol interfaces.* Translate ISA + micro‐architecture specifications into detailed verification plans and test strategies.**Testbench & Methodology Leadership*** Architect and implement System Verilog/UVM testbenches for OOO cores and subsystems: + Reusable UVM environments, agents, monitors, scoreboards, reference models. + Constrained‐random and targeted stimulus for OOO corner cases (deep speculation, hazard patterns, reorder stress).* Define and evolve DV methodology for OOO verification: + Scenario libraries for speculation, memory ordering, and multi‐core interactions. + Reuse patterns across IPs and projects; contribute to common DV infrastructure.**Coverage, Assertions, and Sign‐off*** Define coverage models and sign‐off criteria: + Functional, code, assertion, and scenario coverage for OOO execution and memory model compliance.* Develop and maintain assertion sets (SVA) for key OOO properties, such as: + No deadlock/livelock in ROB / scheduler / LSQ. + Correct branch mispredict, exception, and interrupt recovery. + Correct load‐store ordering, forwarding, and replay behavior.* Drive coverage closure and sign‐off for owned blocks; review and sign off plans/coverage for peer areas when needed.**Debug & Cross‐Functional Collaboration*** Lead debug of complex failures: + Subtle OOO bugs (hazards, wrong‐path effects, starvation, corner replay conditions). + Memory ordering and coherence violations across cores and caches. + TLB/MMU and privilege/protection corner cases.* Work closely with: + Micro‐architecture and RTL teams to refine designs for correctness and verifiability. + Performance/modeling teams to align micro‐arch behavior with models and performance targets. + Post‐silicon teams to reproduce and root‐cause silicon issues in pre‐silicon DV.**Mentoring & Influence*** Mentor junior and mid‐level DV engineers in: + OOO micro‐architecture concepts and debug. + Testbench design, stimulus generation, coverage, and methodology.* Provide technical leadership across projects: + Lead DV design and reviews, contribute to architecture/micro‐architecture reviews from a verification perspective. + Champion best practices in DV and help set technical direction for core verification.**Additional Information:**This position requires a successful background and reference checks and satisfactory proof of your right to work in:IndiaAny offer of employment for this position is also contingent on the Company verifying that you are a authorized for access to export-controlled technology under applicable export control laws or, if you are not already authorized, our ability to successfully obtain any necessary export license(s) or other approvals.SiFive is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.