People Matter

ASIC Physical Design Engineer- Proto, Staff/Senior



Toronto, ON, Canada
Posted on Friday, April 12, 2024

Company Description

Block is one company built from many blocks, all united by the same purpose of economic empowerment. The blocks that form our foundational teams — People, Finance, Counsel, Hardware, Information Security, Platform Infrastructure Engineering, and more — provide support and guidance at the corporate level. They work across business groups and around the globe, spanning time zones and disciplines to develop inclusive People policies, forecast finances, give legal counsel, safeguard systems, nurture new initiatives, and more. Every challenge creates possibilities, and we need different perspectives to see them all. Bring yours to Block.

We are on a mission to build platforms, protocols and products that enable developers — from startups to established financial institutions — to more easily create solutions in the decentralized financial space that further our mission of economic empowerment globally. You will play a key role building towards that mission.

Team Overview

We believe everyone should be able to participate and thrive in the economy. We believe bitcoin plays an essential role in the future of payments and the world’s economy. We believe that the status quo of bitcoin mining does not serve the mission of the bitcoin ecosystem. So we’re building a bitcoin mining rig powered by a Block designed ASIC. With our mining rig, we can address many issues such as the concentration of hardware supply in certain countries and incompatibility with clean energy sources.

Job Description

As a senior ASIC Physical Design Engineer, you will work closely with other digital designers and mixed signal designers to develop the next generation of mining ASIC. In particular, the challenges of block level physical implementation, timing, integration, and physical verification are critical parts of this role.

We are a distributed team across the U.S. and Canada, and are hiring for a single position; we would love to find someone who lives near our lab in Toronto.

Our organization operates as a flat meritocracy, this role’s title is ASIC Physical Design Engineer, but other companies might call this a Technical Lead, Lead Design Engineer, Senior/Staff or Member of Technical Staff role.


You Will:

  • Perform block level P&R, and integration from early RTL to final tapeout

  • Work closely with logic designers on block level timing closure

  • Work closely with custom cell development

  • Improve capacity and scalability of our full chip design flows

  • Develop scripts to enhance current physical design infrastructure/methodology

  • Collaborate with teammates from different functions and time zones

You Have:

  • 10+ years of relevant experience with BSEE or Applied Science degree; 8+ years in combination with a MS degree

  • Expert in using Synopsys ICC2/Fusion Compiler and PrimeTime

  • Even better if you have experience with:

  • CPU/GPU datapath or AI processor physical design

  • Understanding of the full design cycle from RTL to GDSII, including chip level

  • Prior experience with custom physical design and relative placement

  • Successfully tapped out multiple chips in 5nm and below

  • Experience with all aspects of block delivery including clock, power analysis, physical verification, etc.

  • Understanding of timing constraints and timing reports

  • Strong Python/Perl/shell/tcl skills

  • Experience with Linux and or Unix and text editors

  • Ability to work effectively in a fast-paced and rapidly changing start-up environment

  • Excellent communication skills

Even better if you have experience with:

  • CPU/GPU datapath or AI processor physical design

Additional Information

Block takes a market-based approach to pay, and pay may vary depending on your location. Canada locations are categorized into one of two zones based on a cost of labor index for that geographic area. The successful candidate’s starting pay will be determined based on job-related skills, experience, qualifications, work location, and market conditions. These ranges may be modified in the future.

Zone A: CAD $114,500 - CAD $171,700
Zone B: CAD $110,500 - CAD $165,700

To find a location’s zone designation, please refer to this resource.

We have listed some of our common hiring locations. Depending on the cost of labor in the relevant geographic area, state work locations that are approximately 50 Kilometers outside of the metro area listed may be aligned to a different zone. These zones may be modified in the future. Please speak with a recruiter for additional information.

US and Canada EEOC Statement

We’re working to build a more inclusive economy where our customers have equal access to opportunity, and we strive to live by these same values in building our workplace. Block is a proud equal opportunity employer. We work hard to evaluate all employees and job applicants consistently, without regard to race, color, religion, gender, national origin, age, disability, pregnancy, gender expression or identity, sexual orientation, citizenship, or any other legally protected class.

We believe in being fair, and are committed to an inclusive interview experience, including providing reasonable accommodations to disabled applicants throughout the recruitment process. We encourage applicants to share any needed accommodations with their recruiter, who will treat these requests as confidentially as possible. Want to learn more about what we’re doing to build a workplace that is fair and square? Check out our I+D page.

Additionally, we consider qualified applicants with criminal histories for employment on our team, and always assess candidates on an individualized basis.


We want you to be well and thrive. Our global benefits package includes:

  • Healthcare coverage
  • Retirement Plans
  • Employee Stock Purchase Program
  • Wellness perks
  • Paid parental leave
  • Paid time off
  • Learning and Development resources

We’ve noticed a rise in recruiting impersonations across the industry, where individuals are sending fake job offer emails. Contact from any of our recruiters or employees will always come from an email address ending with,,, or,

Block, Inc. (NYSE: SQ) is a global technology company with a focus on financial services. Made up of Square, Cash App, Spiral, TIDAL, and TBD, we build tools to help more people access the economy. Square helps sellers run and grow their businesses with its integrated ecosystem of commerce solutions, business software, and banking services. With Cash App, anyone can easily send, spend, or invest their money in stocks or Bitcoin. Spiral (formerly Square Crypto) builds and funds free, open-source Bitcoin projects. Artists use TIDAL to help them succeed as entrepreneurs and connect more deeply with fans. TBD is building an open developer platform to make it easier to access Bitcoin and other blockchain technologies without having to go through an institution.