Guillermo Repizo

PhD · Venture Capital · DeepTech Ecosystem

Startup–Investor ecosystem leader with 20+ years across deeptech, AI, and biotech. Former Amazon R&D leader and startup founder (exit to Amazon). Founder of Biomixer, connecting founders, VCs, and operators in San Francisco.

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Guillermo Repizo

Professional Journey

Two decades of building, scaling, and advising deeptech ventures

Golden Gate Bio Ventures

Strategic Advisor & Startup Ecosystem Partner
San Francisco, CA
2023–Present
  • Advised 20+ early-stage startups across AI, biotech, and deeptech on product strategy, infrastructure, and fundraising
  • Evaluated 100+ startups for technical feasibility, scalability, and investment readiness
  • Supported fundraising efforts contributing to $4M+ in combined early-stage capital
  • Built relationships with 30+ venture funds and angel investors across Bay Area and LATAM
  • Developed technical assessments including AI workflows, data pipelines, and cloud architecture
  • Created sourcing workflows generating 20+ qualified startup opportunities per quarter

Biomixer

Founder & Ecosystem Builder
San Francisco, CA
2023–Present
  • Founded deeptech startup-investor community connecting founders, VCs, and operators in San Francisco
  • Organized 10+ startup-investor events with participation from 200+ founders and investors
  • Facilitated introductions between 50+ startups and venture capital firms
  • Generated consistent local dealflow across AI, biotech, and deeptech startups
  • Partnered with accelerators including IndieBio, Frontier Tower SF, and early-stage VC firms
  • Built network spanning 1000+ startup founders, operators, and investors

Amazon

R&D Manager, Diagnostics & DeepTech Programs
San Francisco Bay Area
2020–2023
  • Led cross-functional technical teams across 3 locations managing 10+ concurrent programs
  • Scaled organization from 5 to 150 employees following startup acquisition
  • Managed team of 10 PhD scientists and cross-functional stakeholders
  • Oversaw infrastructure and equipment investments exceeding $5M
  • Collaborated with product, engineering, and operations teams on roadmap execution

Caspr Bio

Co-Founder
Acquired by Amazon
2019–2020
  • Co-founded CRISPR-based diagnostics startup acquired by Amazon
  • Raised $500K pre-seed funding from deeptech investors
  • Filed foundational IP supporting company formation
  • Developed technical roadmap and early product strategy

Ecosystem & Community

Building bridges between innovation and capital

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Golden Gate Bio Ventures

Strategic advisory and ecosystem partnerships for early-stage deeptech startups

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Biomixer

Biomixer

San Francisco's deeptech startup-investor community generating local dealflow and VC engagement

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Venture Programs

VC University (UC Berkeley Law) · LBAN Program (Stanford GSB) · IndieBio · Nucleate

Expertise

Technical depth meets venture capital acumen

Startup Ecosystem Development VC & Angel Partnerships Technical Due Diligence AI & Cloud Workloads Program Leadership Dealflow Generation AWS AI/ML Python Startup Evaluation Investor Relations Market Analysis DeepTech Biotech