CPU Fabric and Interconnect Verification Engineer

Nuvacore is building a ground-up high performance, low-power CPU for next-generation compute workloads. We are seeking Verification Engineers at multiple levels - from Senior Engineer to Principal level - to help prove the correctness of the Nuvacore interconnect fabric. As part of the design verification (DV) team, you will help verify the coherent and non-coherent interconnect - building the test plans, environments, and checkers that find deep bugs in transport, ordering, and coherence long before silicon, working shoulder-to-shoulder with architecture and RTL design.

THE ROLE

• Plan & Strategy: Drive the verification scope, strategy, and test plans for the interconnect fabric - coherent and non-coherent, including crossbars, routing, and bus interfaces.

• Environment Setup: Build, maintain, and scale robust verification environments - stimulus generators, protocol checkers, transactors, and coverage - that exercise coherent and non-coherent transactions end to end.

• Test & Debug: Generate directed and random traffic to expose corner cases such as ordering, arbitration, QoS, and deadlock/livelock avoidance.

• Performance Verification: Partner with architects to correlate RTL against performance models, hunting bandwidth, latency, and QoS issues.

• Coverage Closure: Define the coverage space, write functional coverage monitors, and analyze metrics to prove the test plan is complete.

• Cross-functional Collaboration: Partner with architecture and RTL teams to root-cause failures, drive design fixes, and support emulation, FPGA, and silicon bring-up.

REQUIREMENTS - MUST HAVE

• Degree in Electrical/Computer Engineering, Computer Science, or equivalent practical experience.

• 15+ years (Principal) or 4+ years (Senior Engineer) of design-verification experience, ideally on a CPU or complex digital design.

• Strong knowledge of interconnect/fabric architecture and digital logic - coherent and non-coherent protocols (e.g. AMBA, CHI, TileLink) and on-chip transport.

• Hands-on functional verification: test plans, testbenches, protocol checkers, transactors, and coverage.

• Proficiency in C/C++ and/or SystemVerilog, plus a scripting language (Python; Perl a plus).

• Experience writing and debugging tests for complex digital designs.

REQUIREMENTS - NICE TO HAVE

• Interconnect, network-on-chip (NoC), or fabric verification.

• Coherent and non-coherent bus-protocol verification.

• Protocol checkers and formal verification (deadlock/livelock, protocol compliance).

• Constrained-random verification and coverage-driven closure.

• Performance and QoS verification of interconnect.

• Emulation/FPGA and silicon bring-up and debug (waveforms, trace).