Julie Sandler

Julie Sandler

Venture Partner at Pioneer Square Labs
Seattle, Washington, United States

Julie Sandler is a board director at HouseWhisper and Outgo, and serves as co-founder and general partner of PSL Ventures as well as managing director and venture partner at Pioneer Square Labs. She founded PSL Ventures, a fund established in 2019 that is still running, and has expertise in venture investing, board leadership, and technologies including vertical AI, productivity, logistics, fintech, and the future of work.

Author Departs Pioneer Square Labs After 7+ Years and 40+ Companies, Reflects on Career Highlights and Team Bonds

The author marks their last day at Pioneer Square Labs after over seven years and involvement with more than 40 companies, reflecting on memorable experiences and expressing gratitude for colleagues and mentors. They highlighted unique moments like pitching their AI-powered dating app 'Jail Date' and emphasized the lasting relationships formed during their tenure.

2:32 Julie Sandler, Pioneer Square Labs

DARE speaks with Julie Sandler, Managing Director at Pioneer Square Labs and co-founding general partner of PSL's venture capital firm, PSL Ventures. The firm invests in companies all over the Pacific Northwest region. Julie has a long-standing interest in digital solutions serving women and underserved communities. Prior to PSL, Julie was a partner at Madrona Venture Group and managed digital marketing for Amazon’s ebook business worldwide. Julie was named a “Power 100” influencer in the Puget Sound Business Journal, voted “Geek of the Year” by GeekWire, named an AdWeek “Brand Star” for her work with underrepresented entrepreneurs, voted GeekWire’s “Hire…

Vivek Ladsariya Joins Pioneer Square Labs as Managing Director, Moves from Bay Area to Seattle

Vivek Ladsariya, a veteran Bay Area investor with experience in enterprise technology startups, has moved to Seattle to become managing director at Pioneer Square Labs, playing a key role in their Ventures arm and Studio. He aims to focus on technically driven enterprise software infrastructure startups, especially those delivering real automation, enhancing Seattle's venture capital ecosystem.

A Conversation with Julie Sandler | Managing Director @ Pioneer Square Labs | Partner @ PSL Ventures | Madrona Venture Group | Seattle Entrepreneurial Women’s Network | Amazon | Stanford U. | Harvard Business School

In this episode, we talk to Julie Sandler about her psychology background and how that has translated to her work today, especially her relationships with founders. Talking about PSL, she touches on the growth of the fund and the Northwestern region and the venture studio model. She also dives into diversity both within the fund and their investments, serving as a testament to advancements in the industry. She concludes with her observation that the support system among women prominent in VC provides guidelines to help navigate the space.

The Future of Femtech

This week we're presenting a new episode of the GeekWire podcast 2025: Tomorrow, Today featuring a discussion with Julie Sandler of Pioneer Square Labs. It's one in a series of conversations with technology investors on the 2025 podcast. Find more episodes at geekwire.com/2025podcast. We'll be back next week with our regular weekly show. See omnystudio.com/listener for privacy information.

Pioneer Square Labs raises $100M Fund II to back 30+ Pacific Northwest startups with $1–3M initial checks

Seattle-based Pioneer Square Labs raised $100 million for its second venture fund, exceeding its $80 million target due to strong institutional demand, and will invest across more than 30 early-stage Pacific Northwest companies with initial checks of $1–3 million. The firm operates a startup studio (raised $29 million) and a venture fund model that splits capital roughly half to studio spinouts and half to external startups.

Madrona’s Dan Li: Niche, Creator-Driven Communities Like Roblox ($30B) and Clubhouse (~$1B) Are Rising

Madrona partner Dan Li says niche, user-populated online communities — exemplified by Roblox (valued at $30B) and Clubhouse (about $1B) — are growing more important as creators produce sticky, original content, a trend accelerated by the pandemic. He discussed these themes on GeekWire Studios’ podcast 2025: Tomorrow, Today, hosted by John Cook and Jordon Voss.

Think Tank Ep. 4 - Building Centers for Digital Innovation w/ Julie Sandler of Pioneer Square Labs

What happens when you bring together two bright minds to tackle health care’s biggest challenges? This isn’t your typical brainstorm among healthcare experts. This is a supercharged session between two minds that work in similar, but very disparate industries. Our guests talk about a broad challenge they face and discuss how they’ve approached the problem in their respective fields. The magic? To see how their approaches to a challenge can be applied to another industry to spark new avenues of innovation. This series is all about creating synergy between two different, but very like-minded healthcare and tech experts. In our…

Julie Sandler

Julie is a managing director at Pioneer Square Labs, and runs the firm's venture capital arm, PSL Ventures. Prior to PSL, Julie was a partner at Madrona Venture Group, where she led the firm’s investments in Integris, Poppy, and Julep. In 2013, Julie launched the Seattle Entrepreneurial Women’s Network, an informal forum for women entrepreneurs and startup executives to connect in the Greater Seattle area. She currently resides in Seattle with her husband, Alejandro, and their toddler son and newborn daughter. See omnystudio.com/listener for privacy information.

Organizations

See all 22
  • Pioneer Square Labs logo
    Pioneer Square Labs Venture Partner 2025–present, Co-founder & General Partner, PSL Ventures 2018–present, Managing Director, PSL 2017–present, Former Managing Director , Venture Partner (upcoming) · current
  • HouseWhisper logo
    HouseWhisper Board Director 2024–present · current
  • Outgo logo
    Outgo Board of Directors, Board Observer 2021–present · current

Education

  • Harvard Business School MBA with Honors
  • Stanford University Phi Beta Kappa, Bachelor of Arts, Psychology, with Honors and Distinction
  • Stanford University Master of Arts, Psychology

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