Sonia Siddiqui

About

Tamarack Solutions is a boutique privacy and data protection practice providing fractional legal support to technology, fintech, and AI-driven companies. The firm focuses on building and operationalizing scalable privacy programs, particularly during periods of rapid growth, product expansion, and heightened regulatory scrutiny. Tamarack was founded by Sonia Siddiqui, former Global Head of Data Privacy and Security Legal at Coinbase, where she supported the company through its direct listing, and former Chief Privacy Officer at Kohler. She has also advised multiple companies through IPO readiness, helping to establish externally defensible privacy postures aligned with investor and regulatory expectations. The practice sits at the intersection of privacy, product, and innovation, partnering closely with legal, product, and engineering teams to translate complex regulatory requirements into actionable, defensible solutions.

Practice Areas

Featured Clients

Invisible TechnologiesRainCryoport Inc.CircleCIGreenlightGemini

Services

• Product & Privacy Counseling (Embedded Legal Partnership)

  Targeted guidance on product development and data use, helping teams design and launch features in a privacy-forward way. Focused on translating legal risk into practical product decisions across areas like tracking, identity, AI/ML, and user data flows. Deliverables: Product reviews, data flow analysis, consent and disclosure guidance, and written risk recommendations for new and existing features.
  $15,000/monthly
• Strategic Privacy Program Design & Execution

  Design and implementation of scalable privacy programs tailored to company size, industry, and regulatory exposure. Built to be externally defensible and internally operational. Deliverables: Data mapping and classification frameworks, policy development, retention strategies, DPIAs, and governance structures.
  $15,000/monthly
• Fractional Privacy Leadership (DPO, CPO as a service)

  Embedded, senior-level privacy counsel providing ongoing strategic guidance across product, legal, and executive teams. This includes day-to-day advisory, risk assessment, stakeholder alignment, and decision-making support on high-impact privacy issues. Deliverables: Ongoing advisory, product and feature reviews, risk assessments, leadership guidance, and cross-functional privacy support. *Rate may vary depending on the required commitment
  Contact

Work

• 
  Chief Privacy Officer

  KOHLER

  Apr 2024 - Dec 2025
• 
  Head of Privacy Legal

  Coinbase

  May 2020 - Jan 2023
• 
  Privacy Leader

  Grant Thornton

  Mar 2014 - Apr 2020

Education

• University of Maryland Francis King Carey School of Law
  J.D.