How can we partner?

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  • We act as an extension of your team, providing expert oversight and continuous management of critical operational functions. Focus on your core mission – generating returns or managing wealth – while we ensure your operations run with flawless efficiency. Our ongoing operations service provides continuous monitoring, process refinement, and proactive support tailored to the unique demands of investment funds and family offices. service embeds continuous improvement into the heart of your fund or family office. We proactively optimize workflows, enhance reporting accuracy, manage technology, and mitigate risks, ensuring your operations are not just efficient today, but scalable for tomorrow's growth. Partner with us for institutional-grade operational resilience and agility.

  • Need expert leadership for a critical, short-term project? Our special projects service provides dedicated management for specific initiatives within your investment fund or family office. We take full responsibility for planning, executing, and delivering complex projects – like system implementations, process redesigns, or regulatory changes – on time and within scope. Launching a new system? Adapting to regulatory demands? Optimizing a specific workflow? Our special projects service provides experienced leadership for your defined-duration projects. We manage the entire lifecycle – scoping, planning, stakeholder coordination, risk mitigation, and final delivery – ensuring your specific objectives are met efficiently and effectively.

  • Turn your operations into a powerful competitive advantage. We help you identify inefficiencies, streamline workflows, reduce costs, and enhance quality across your organization. We partner with you to design and implement sustainable operational improvements that drive a foundation for scalable growth. We provide a clear roadmap to transform your operations. We leverage data-driven analysis, industry best practices, and collaborative workshops to pinpoint critical improvement areas. From process redesign and technology integration to building a culture of continuous improvement.

  • Rachel Sonnenberg

    FOUNDER & PRINCIPAL

    Close-up of a woman with short black hair smiling, wearing a white shirt, gold watch, bracelet, and ring, standing with arms crossed near a window in a modern office setting.

  • ABOUT

    Sonnenberg Advisory was founded after nearly two decades of experience across venture capital, family offices, hedge funds, private equity, and startup ecosystems. The firm was built to bring institutional-grade operational expertise and strategic insight to investors, founders, and family offices on a fractional basis.

    Prior to founding Sonnenberg Advisory, Rachel built and led the Investment Innovation Lab at Amazon Web Services, where she worked closely with early-stage startups. She previously served as Chief of Staff at Kindred Ventures, a seed-stage venture capital fund, and earlier was part of the growth-stage investment team at Y Combinator.

    Before returning to San Francisco, Rachel spent more than a decade in Boston. Rachel was at North Run Capital, an event-driven long/short hedge fund, and Audax Group, a middle-market private equity firm. She began her professional career at The Ritz-Carlton Hotel Company, where she was selected for the company’s highly competitive management training program and later focused on operations and quality analytics—an experience that shaped her long-standing focus on operational excellence.

    Rachel lives in San Francisco with her husband, Andrei. Outside of work, she enjoys traveling, music, photography, cycling, skiing, cooking, discovering new restaurants, and exploring the world of wine. A lifelong learner, she is always pursuing new ideas, skills, and experiences.