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Senior ALU Design Engineer

SiFive
July 29, 2026
Full-time
Remote friendly (Cambridge, ENG, United Kingdom)
Worldwide
RTL Design Jobs, Level - Senior

Job Title

Senior ALU Design Engineer

Role Summary

Design and implement arithmetic operators for RISC‑V processors, including floating‑point, vector, crypto and integer operations. Work on RTL implementation and verification, optimize timing/area/power, and collaborate with physical implementation and other engineering teams to meet performance targets.

SiFive develops RISC‑V compute platforms for high‑performance and data‑intensive applications.

Experience Level

Senior — the posting specifies 2+ years of RTL or related design experience.

Responsibilities

Primary responsibilities include:

  • Specify, design and implement arithmetic operators for RISC‑V instructions (FP, vector, crypto, integer).
  • Optimize timing, area, power, and reduce operator latency.
  • Develop unit and formal tests; write new tests for new designs and optimizations.
  • Collaborate with physical implementation team to meet frequency, area and power targets.
  • Produce clear technical documentation and work cross‑functionally to integrate designs.

Requirements

Must-have skills and conditions:

  • 2+ years of RTL design or related design experience.
  • Academic or professional experience with arithmetic RTL or CPU RTL using Chisel, Verilog, SystemVerilog or VHDL.
  • Proficiency in at least one object‑oriented or functional programming language and willingness to adopt Chisel hardware generator design.
  • Attention to detail, high‑quality code and documentation practices.
  • Ability to work effectively in cross‑functional teams.
  • Hybrid working: expected to be in the Cambridge office 1 day per week (more if preferred).
  • Successful background/reference checks, right to work in the United Kingdom, and ability to satisfy export‑control requirements or obtain necessary licenses.

Education Requirements

Masters or higher degree in electronic engineering or computer science with a strong mathematical background, or a degree in a related field with a strong background in code development (as stated in the posting).


About the Company

Company: SiFive

Headquarters: San Mateo, California, United States

SiFive is a pioneering company in the RISC-V ecosystem, focused on transforming the future of computing by delivering high-performance, data-intensive RISC-V solutions. Their compute platforms empower leading technology firms to innovate across various markets, including AI, machine learning, and automotive sectors. SiFive is recognized for its commitment to ongoing innovation and fostering collaboration among talented teams, impacting lives by enabling advanced chip design.

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Date Posted: 2026-07-28