Semidynamics is a Barcelona-based semiconductor company, founded in ****, that designs European processor technology built on the open RISC-V standard.

We develop fully customisable 64-bit RISC-V processor IP, including out-of-order and in-order CPU cores and dedicated vector and tensor units, for demanding AI, machine learning and high-performance computing workloads.Our team combines deep architecture expertise with hands-on silicon experience, and we are growing to deliver complete, high-performance SoC solutions to our customers.

Role overview

We are looking for an SoC Top RTL Integration Engineer to integrate multiple subsystems into the top level of our high-performance SoCs.

You will connect CPU clusters, IP blocks and peripherals through interconnects and NoCs, and make sure the integrated design is clean, constrained and ready for tape-out.

This is a senior, hands-on role for an engineer who has already integrated large SoCs and taken them to silicon.

Key responsibilities

Integrate multiple subsystems (CPU clusters, memory, accelerators, peripherals and third-party IP) into theSoC top-level RTL.

Connect subsystems throughinterconnects and NoCsusing protocols such asAXI, APBandCHI.

Define and integrate the chip'sIOs, including connections topads.

Write and maintainSDCtiming constraints for the integrated design, working with physical design teams.

Run, debug and closelint, CDC and RDCchecks at SoC top level.

Integrate the top-levelclock, resetand power infrastructure, and contribute toUPFpower intent.





Develop Python and C scripts and tests to automate integration flows and support bring-up.

Work closely with architecture, verification, DFT and physical design teams to drive the SoC through totape-out.

Required qualifications

Degree in Electrical Engineering, Electronic Engineering, Computer Engineering or a related field.

8+ years of experience in digital/SoC design.

Strong hands-on RTL design experience (SystemVerilog/Verilog).

Proven experience integrating multiple subsystems on large SoCs.

Experience connecting subsystems through interconnects and/or NoCs, with solid knowledge of AXI and APB.

Proven track record on one or more tape-outs.

Hands-on experience with lint, CDC and RDC checks.

Experience writing and managing SDC constraints and integrating chip IOs.

Working knowledge of Python and C for scripting and automation (user level).

Fluent English, written and spoken.

Nice to have

Knowledge of clock, reset and power architectures.

Experience with the CHI coherent interconnect protocol.

Experience with UPF-based low-power design flows and pad ring integration.

Why Semidynamics

Work at one of Europe's most promising deep-tech semiconductor scale-ups

Accelerated development path, with room to grow into confidential computing, memory isolation and software security

4 days per week in the Barcelona office (city center), 1 day working from home

1 week of work from anywhere in the world

Competitive package A collaborative, technical, growth-oriented environment that values direct ownership and clear thinking

📌 Soc Top Rtl Integration Engineer (Barcelona)
🏢 Semidynamics
📍 Barcelona