Sierra J. Smarra


Building her practice in estate planning, guardianships and conservatorship, and legal administration, Sierra Smarra brings to Mountain Dearborn extensive experience with drafting legal documents and administering estates, trusts, and probate, as well as processing high-risk financial transactions. Prior to joining the firm in 2023, she worked for six years at several Boston law offices in estate planning and administration while studying for her law degree at Suffolk University, where she was a member of the Suffolk Law Review. From 2014-2016, Sierra specialized in client relations and processing multi-million-dollar financial transactions at State Street Bank and Trust Company.

A diligent professional with a sharp eye for detail, Sierra loves the financial side of law, as well as drafting documents and advising clients. “I want to make a difference in people’s lives,” she says. Choosing this career is her way of following her immigrant family’s example, to strive for excellence and serve her community.


  • National Lawyers Guild
  • BNI Group of Auburn
  • MassNAELA
  • Town of Auburn Planning Board
  • Central MA Regional Planning Commission – Town of Auburn Delegate

Practice Areas

Bar Admissions

  • Commonwealth of Massachusetts


  • Suffolk University Law School, JD

  • University of Massachusetts – Amherst, BA