Silicon Product and Test Engineer
Block, Inc. is a technology company building tools for economic empowerment, operating a portfolio of financial brands including Square, Cash App, Afterpay, TIDAL, Bitkey, and Proto. It serves sellers, consumers, artists, and bitcoin users through payments, banking, buy-now-pay-later, music streaming, and bitcoin self-custody and mining products.
About Block, Inc.
Block, Inc. builds technology aimed at increasing access to the global economy. Its brands each unlock different aspects of the economy: Square makes commerce and financial services accessible to sellers; Cash App is an easy way to spend, send, and store money; Afterpay (Clearpay in the UK) helps customers manage spending over time; TIDAL is a music platform empowering artists as entrepreneurs; Bitkey is a self-custody bitcoin wallet; and Proto builds open, accessible bitcoin mining hardware and services. Block has been a long-time advocate for bitcoin, integrating bitcoin buying/selling and Lightning Network payments into Cash App and Square, funding open-source bitcoin infrastructure through Spiral (including the Lightning Development Kit), and engaging in bitcoin policy advocacy through groups like COPA, the Digital Energy Council, the Crypto Council for Innovation, and the Texas Blockchain Council. The company also runs a significant open source program (contributing to projects like Goose, an on-machine AI developer agent, OkHttp, Retrofit, gRPC, Envoy, and MySQL) and an AI research effort, including co-founding the Agentic AI Foundation with Anthropic and OpenAI. Block serves individual consumers, small and medium-sized businesses/merchants, artists, and developers.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
This role leads silicon characterization, yield optimization, test strategy development, cross-platform correlation, and system-level performance optimization for advanced-node bitcoin mining ASICs. It collaborates with ASIC Design, ATE, Bench, Systems, Reliability, Foundry, OSAT, and external vendor partners.
Requirements
- Bachelor's or Master's degree in Electrical Engineering, Computer Engineering, or a related field.
- 5–10 years of experience in Product Engineering, Test Engineering, Silicon Validation, or Post-Silicon Engineering in fabless or semiconductor environments.
- Strong understanding of wafer sort, final test, qualification, and high-volume semiconductor manufacturing.
- Experience with silicon bring-up, characterization, yield analysis, and product qualification for advanced-node ASICs or SoCs.
- Experience with ATE platforms such as Advantest 93K or Chroma.
- Experience developing or debugging ATE test programs and production screening methodologies.
- Strong statistical data analysis and debugging skills using JMP, Python, or similar tools.
- Experience with DOE planning, silicon correlation, and yield optimization.
- Cross-functional experience with Design, Systems, Firmware, Reliability, Manufacturing, Foundry, and OSAT teams.
- Strong problem-solving skills and ability to independently drive technical issues to closure.
- Comfort operating in ambiguous, fast-moving environments with high ownership.
- Nice-to-have experience includes low-voltage optimization, HPC, AI, networking, bitcoin mining ASICs, device physics, SPICE, FinFET, system-level characterization, scripting, or Mandarin fluency.
Responsibilities
- Drive post-silicon bring-up, characterization, qualification, and productization from first silicon through mass production.
- Develop and optimize wafer sort and final test screening strategies for power, performance, yield, quality, and DPPM.
- Develop, debug, and maintain ATE test programs and screening methodologies for advanced-node ASICs.
- Define and execute characterization plans across process, voltage, and temperature conditions.
- Analyze silicon data across CP, FT, Bench, and System platforms to improve correlation and system-level performance.
- Plan, execute, and analyze DOE studies for silicon characterization, yield optimization, and process tuning.
- Develop ASIC binning methodologies and system optimization strategies with system and hardware engineers.
- Define and support ATE hardware requirements including probe cards, sockets, and load boards.
- Analyze wafer-level and package-level data to identify trends, root causes, and corrective actions.
- Collaborate with foundry, OSAT, and external vendors on bring-up, qualification, yield improvement, and manufacturing execution.
- Develop KPIs and dashboards for power, performance, process variation, yield, and product quality.
Benefits
- Remote work
- Medical insurance
- Flexible time off
- Retirement savings plans
- Modern family planning