About Us


With a deep understanding of the southeastern markets in which we operate, we carefully select each location based on its proximity to strong local economic drivers and population growth in and around prospering metropolitan areas. We add value by enhancing the local area, while also looking to the future and the role we play in shaping these communities.

The Team

Co-founded in 2017 by Bruce Keene and Mark Sembler, 2nd Wave Development represents over 45 years of experience in multifamily development and management. This is Bruce’s second venture with the Sembler family, having previously led Ballast Point Communities with Mark’s father, Steve. Together, Bruce and the Semblers have developed over 2,400 multifamily units.

Bruce Keene

As CEO of 2nd Wave Development, Bruce guides the company with a mission­-directed approach that keeps the team focused on achieving its strategic goals. His 40-year real estate career includes many facets of the apartment industry such as management, design, development, acquisition, and construction with national and regional companies. 2nd Wave is Bruce’s second venture in apartment development with the Sembler family, the first being the Ballast Point Group which developed apartments and condominiums in the 2000’s. Prior to Ballast Point, Bruce was President/Partner of Trammell Crow Residential’s Southcoast division based in Houston, TX. Prior to Trammel Crow, Bruce led the Management division for Summit Properties’ Mid Atlantic, Atlanta and Florida regions during the 1990’s.

Bruce has been involved with industry related boards and associations, both regional and nationally throughout his entire career. He graduated from The University of South Carolina with a bachelor’s degree in 1974.

Mark Sembler

Instrumental in founding 2nd Wave, Mark brings a wealth of real estate development expertise and business acumen to our day-to-day operations. He manages all facets of the business—from site selection and project design to capital structuring, construction and operations—ensuring the success of our apartment communities. Mark’s development career began with Duval Development and continued with our sister company, Blue Sky Communities. He holds a bachelor’s degree from Duke University (cum laude) and an MBA in real estate and finance from the Kellogg School of Management at Northwestern University.

Alissa Sieben

As 2nd Wave’s Senior Vice President, Alissa oversees prospective and current development projects with an eye for deal structuring and construction supervision. Her unique background in development and law offers a competitive advantage in representing our owners’ interests. Alissa began her career in land use law, assisting clients with litigation, eminent domain negotiations, and rezoning and comp plan amendments. She then served as development manager for Norstar Development. Alissa earned her bachelor’s degree in entrepreneurship and Juris Doctorate degree from Florida State University (cum laude).

Stephen Gerhard

After successful sales and service leadership in the professional sports industry, Stephen now lends his passion and expertise to our real estate team—specializing in site selection and land acquisitions. Stephen earned his bachelor’s degree from Florida State University, master’s degree from the University of Florida, and MBA from the Odette School of Business at the University of Windsor, Ontario.

Bryan Castillo

Bryan Castillo

As our director of finance, Bryan negotiates debt and equity for new development opportunities as well as debt placements on stabilized communities. He also manages key relationships among major lenders and investors, securing capital for 2nd Wave’s development deals. Bryan’s career includes more than 11 years of leading structured finance efforts for private equity multifamily organizations, developing finance strategies for new acquisitions, managing portfolio debt, and driving capitalization efforts for new development projects. Bryan holds a bachelor’s degree in finance and real estate from Florida State University.

Julianne Collins

After leading one of Chicago’s top residential design firms, Julianne brings more than a decade of experience with large-scale residential and commercial interior design projects to her role as our director of design. Her sophisticated view of modern living has been featured in several national publications. Julianne’s keen eye for detail and collaborative approach help 2nd Wave’s vision for each community come to life in beautiful ways. She holds a Bachelor of Fine Arts in interior design and a Bachelor of Arts in art history from Florida State University.

Hector Morales

As director of construction, Hector oversees all phases of our active construction projects, from inspecting installations to facilitating communication. With more than 30 years of experience in architectural/community management—including 17 years with multifamily architecture firm Humphreys and Partners—Hector has managed multiple award-winning communities across Florida and other states. He holds a bachelor’s degree in engineering design from the University of Central Florida.

Lauren Sembler

As 2nd Wave’s development manager, Lauren works alongside the Senior Vice President to oversee prospective and current development projects. Lauren began her career as a commercial real estate attorney, representing developers of large commercial and residential projects in land acquisition, financing, development, and disposition. Lauren earned her bachelor’s degree from Duke University and Juris Doctor from Northwestern University School of Law (cum laude).

Tristan Lamontagne

As a Development Associate, Tristan supports all facets of development for our prospective and current communities. Tristan joined 2nd Wave in 2018 after graduating from Florida State University with a Bachelor’s degree in Finance and Real Estate. After a successful three years as a finance and acquisitions analyst, Tristan has shifted his focus to Development. Tristan’s scope of work includes due diligence of prospective sites, entitlements, design, and construction. Tristan has exposure to the entirety of 2nd Wave’s pipeline, playing a key role in supporting the success of the development team.

Russell Gardiner

As 2 nd Wave’s Analyst, Russell supports our acquisitions and finance efforts, playing a significant role in the underwriting and analysis of both prospective and ongoing projects. Prior to joining the 2nd Wave team, Russell worked as a Finance Manager at Allstate. Russell earned his MBA in finance from the University of Florida, where he graduated at the top of his class. He also obtained a bachelor’s degree (finance, minor in real estate) from UF, and is a member of the Florida Blue Key leadership honorary.

Kiara Armengol

As 2nd Wave’s Administrative Assistant, Kiara plays a key part in day-to-day operations, helping our development team complete important tasks in a timely manner. Through her background as an administrator for nationwide general contractors in the construction industry, Kiara manages a variety of projects with skill and grace. Additionally, she holds OSHA 10 and Notary certifications.