Tim Porter

Managing Director at Madrona
Greater Seattle Area

Tim Porter is Managing Director at Madrona Venture Group and serves as Director at NewDays, Inc. He has previously held leadership roles in finance and corporate development at Eagle River Investments, Goldman Sachs, Microsoft, Teledesic, and Integris Software Inc.

Impinj CEO Chris Diorio rings Nasdaq bell as RFID chipmaker marks 10th IPO anniversary after growing to $4.2B market cap

Impinj, maker of tiny battery-free RFID chips embedded in over 160 billion items, celebrated the 10th anniversary of its IPO as CEO Chris Diorio rang the Nasdaq bell; the Seattle company commands about two-thirds of its market, grew from a $250 million IPO valuation to a $4.2 billion market cap, but has reported only one profitable year and carries a $400 million accumulated deficit.

Former GitHub CEO Thomas Dohmke’s Entire launches distributed Git network preview after $60M seed

Former GitHub CEO Thomas Dohmke’s startup Entire launched a preview of a distributed Git network that mirrors repositories across active regions in the U.S., Europe, and Australia to reduce latency, rate limits, and outages from AI coding agents. Entire raised a $60 million seed round in February and lets developers mirror GitHub repos in one step while keeping code on the original platform.

Data Visualization Veterans Ellie Fields and Jeffrey Heer Launch Ridge AI with $2.6M Led by Madrona to Enhance SaaS Analytics

Data visualization experts Ellie Fields and Jeffrey Heer launched Ridge AI with $2.6M in pre-seed funding from Madrona and prominent angels to help SaaS companies embed interactive analytics and AI data agents quickly into their products. Ridge AI aims to fix persistent issues in web-based data presentation by enabling rapid creation of interactive dashboards and data agents sharing the same dataset.

Madrona at 30 Years Interview Spotlight: Tim Porter

Madrona Managing Director Tim Porter talks with GeekWire’s John Cook about his 18 years of experience at Madrona, from investing in first-time founders in Seattle and Portland to witnessing the rise of cloud and now AI. He shares what defines a “Madrona founder,” the importance of trust-based relationships, and why lifelong learning is at the heart of venture. Tim also looks ahead to the future of the Pacific Northwest tech ecosystem and Madrona’s enduring commitment to community and innovation.

Seattle Has Fewer Than 20 Unicorn Startups Amid Top AI Talent and Tech Giants in 2025

Seattle hosts fewer than 20 unicorn startups, representing about 1.5% of global unicorns as of January 2025, despite having a dense tech talent pool and being a prime location for AI businesses. Industry leaders argue that the number of unicorns alone is a poor measure of regional tech success, pointing to Seattle's strengths in AI, cloud giants, and fast-growing startups.

Investor Spotlight: A Conversation with Madrona's Soma Somasegar

Hear from Madrona Managing Director Soma Somasegar as he discusses his path to venture capital by way of 27 years at Microsoft. He shares invaluable insights about what he looks for in a founder, the importance of passion in founders, the state of cloud technology, and the future of AI and Startups. Tim also shares Madrona's core principles, his favorite books for entrepreneurs, and his personal interests outside of work, including his passion for outdoor sports and the nonprofit Global Partnerships. This chat is a must-watch for aspiring entrepreneurs looking for insights into the venture capital world or strategies to…

2024 Annual Investment Outlook

Send us Fan Mail Listen to our 2024 Annual Investment Outlook Panel with four top VCs based in Seattle and the Bay area. Get their perspective on the investment climate in 2024 and their plans to invest specifically in AI/ML based startups. Tim Porter, Managing Director, Madrona Ventures Tim joined Madrona in 2006 and invests in B2B software companies in the Pacific Northwest. He is currently interested in intelligent applications and SaaS, cloud-native software infrastructure, the modern data stack, machine learning, DevOps, and cybersecurity. He is also a board member of numerous Madrona portfolio companies. Sudip Chakrabarti, Partner, Decibel VC…

Investor Spotlight: A Conversation with Madrona's Tim Porter

Hear from Madrona Managing Director Tim Porter as he discusses his path to venture capital by way of mechanical engineering and Microsoft. He shares invaluable insights about what he looks for in a founder, the importance of customer focus, and the high priority he places on integrity. Tim also shares Madrona's core principles, his favorite books for entrepreneurs, and his personal interests outside of work, including his passion for outdoor sports and the nonprofit Global Partnerships. This chat is a must-watch for aspiring entrepreneurs looking for insights into the venture capital world or strategies to capture an investor's eye. (00:00)…

Numbers Station Founders on Applying Foundation Models to Data Wrangling

This week, Madrona Managing Director Tim Porter talks to Numbers Station Co-founders Chris Aberger and Ines Chami. We announced our investment in Numbers Station's $17.5M Series A in March and are very excited about the work they're doing with foundation models, which is very different than what has been making headlines this year. It isn't content or image generation – Numbers Station is bringing the transformational power of AI inside of those foundation models to the data-wrangling problems we've all felt! You can't analyze data if the data is not prepared and transformed, which in the past has been a…

Seattle Startup Groundlight Raises $10M Seed to Revolutionize Warehouse Monitoring with AI and Natural Language Computer Vision

Seattle startup Groundlight, co-founded by former Amazon and Picobrew execs Leo Dirac and Avi Geiger, emerged from stealth with a $10 million seed fund to simplify warehouse monitoring using AI-powered computer vision. Their platform enables businesses to query real-time video feeds through natural language prompts for instant, customizable insights.

Wild times for tech startups

What the heck is going on in the economy, and how will the current market gyrations and geopolitical uncertainty impact startups and venture capital? To help answer these questions we invited Tim Porter to join us this week on the GeekWire Podcast. He's a Madrona Venture Group managing director who has invested in early-stage technology startups at the Seattle-based venture capital firm for the past 15 years, in areas including cloud, AI and enterprise software companies. Follow along with our extended notes from the discussion. With GeekWire co-founder John Cook. Edited by Curt Milton; Theme Music by Daniel L.K. Caldwell…

Scott Jacobson

Scott Jacobson is a Managing Director at Madrona Venture Group, where he has spent over 14 years helping early-stage technology entrepreneurs in the Pacific Northwest build and scale their companies. Scott is on the boards of companies like Rover, Flexe, and CommerceIQ, and focuses much of his energy on consumer businesses or business technologies that have a significant consumer component. Prior to joining Madrona, Scott worked at Amazon, where he did two tours of duty, leading product management for Amazon’s 3rd-party seller platform and working on the launch of the original Kindle. See omnystudio.com/listener for privacy information.

Madrona Venture Group Raises $345M for 8th Fund and $161M for 2nd Later-Stage Fund in Largest Ever $500M Capital Raise

Madrona Venture Group raised over $500 million for its largest fundraise ever, including $345 million for an eighth early-stage fund targeting 35-40 Pacific Northwest startups and $161 million for a second later-stage Acceleration Fund. The firm continues to focus on supporting the Pacific Northwest tech ecosystem while also backing later-stage companies across North America.

Organizations

See all 9
  • NewDays logo
    NewDays Director 2025–present · current
  • Madrona logo
    Madrona Managing Director 2006–present · current
  • Madrona Venture Group Managing Director · current

Education

  • Stanford University Graduate School of Business MBA · 2001–2003
  • Massachusetts Institute of Technology BS, Mechanical Engineering, Minor in Economics · 1992–1996
  • Racine Lutheran High School 1988–1992

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