Phone: (858) 536-4900
Fax: (858) 536-8255


Volunteer / Enroll a Child –
General Inquiries –


4305 University Ave., Suite 590
San Diego, CA 92105

Leading us in the right direction

Big Brothers Big Sisters staff is a compassionate and dedicated group of individuals, willing to do whatever it takes to help change children’s lives for the better.

Tina Rose – Chief Executive Officer

A San Diego native, Tina has more than two decades of experience in the non-profit sector, with a focus on youth serving organizations. Tina independently opened a Foster and Adoption branch office in San Diego, and then conducted all facets of the marketing, certification/training and office management as the office grew. In 2004, she began her career with Big Brothers Big Sisters of San Diego County. Tina started working in the Program Department, then in 2005 became the Marketing Director, in 2015 the Director of Marketing & Events and in 2017 the Vice President of Operations. Tina works diligently with the BBBS Board and the greater community to build awareness of the need for more mentors and funding to support the life-changing programs offered by Big Brothers Big Sisters. Tina graduated summa cum laude from Vanguard University and was a scholar athlete, playing four years of collegiate volleyball. Tina is an active mentor and community volunteer. She supports various causes, such as the Sharp Mary Birch Hospital NICU, Voices for Children CASA program, Miracle Babies, The American Cancer Society and Flood Church.

  (858) 746-9117

Claudia Aldana Robles – Program Director

Claudia Aldana Robles is Director of Community Mentoring (CM) Programs at Big Brothers Big Sisters of San Diego County and joined the team in 2006. She has served in a variety of roles, including working directly with families and volunteers, cultivating partnerships within the community and developing special programs. She helped create and launch the Hermandad initiative and spearheaded several grant-funded projects. Prior to joining the team, Claudia began her career working with child victims of abuse, neglect and abandonment. In her current role, she provides support, guidance, and leadership to the CM Program department. She ensures that all CM programs and initiatives comply with local and national standards. Claudia holds a B.A. in Sociology and Education from the University of California, Berkeley.

  (858) 746-9145

Mae Briseño – Program Manager of Match Support & Special Initiatives

Mae began her career with Big Brothers Big Sisters in June of 2007 as the Amachi Match Support Specialist, where she served children of incarcerated parents.  She has had varying roles since then as an Enrollment and Matching Specialist, Lead Match Support Specialist and currently as the Program Manager of Match Support and Special Initiatives.  Mae has studied abroad in France and has experience working with youth around the globe in countries such as Japan, Ecuador and Mexico.  She’s conducted field research in Oaxaca, Tijuana and La Paz.  She has an extensive background of over a decade practicing her education and training with the children of vulnerable populations.  Mae holds a Bachelor’s Degree from Boston University and a Master’s Degree in Latin American studies with concentrations in both Cultural Anthropology and Religion from San Diego State University.

(858) 746-9166

Talia Hazard – Director of Donor Engagement

Talia came to Big Brothers Big Sisters of San Diego County in May of 2015 and brought with her a decade of non-profit experience. Joining us from Los Angeles, Talia worked for an international educational organization for several years, and previous to that, worked in marketing and recruitment for Jewish Big Brothers Big Sisters of LA. Talia holds an MBA with a focus on Social Enterprise from Pepperdine University in Malibu and attended UCLA for her Bachelors degree.

  (858) 746-9116

Mariela Nuza Cohen – Senior Program Manager

Mariela started her career with Big Brothers Big Sisters of San Diego County in July of 2007 as part of the Marketing Department. In 2012, she became a Program Manager and shortly after a Senior Program Manager, overseeing the enrollment and matching of all volunteers and children across the Community Mentoring programs. Mariela holds a B.A in International Business with an emphasis in Management and Spanish from San Diego State University and has studied abroad in countries like Mexico, Chile and Spain. She also served on the Board of a local non-profit, Amigos de las Americas from 2011-2015.

(858) 746-9146

Edith Sanchez-Cruz – Community Outreach Senior Manager

Edith learned about BBBS when she was a Little Sister, during middle school, and experienced first-hand the positive impact a Big Sister can have. Edith began her career at BBBS in 2008 and in February 2019 ascended to the role of Community Outreach Senior Manager, having had the benefit of prior experience serving in several key programmatic roles within the agency. She was crucial in the development and launch of our Community Mentoring initiatives, such as Bigs in Blue, AYANA, and Hand in Hand and provided support to the program enhancements: Healthy Futures and Big Futures. In her current role, Edith oversees the recruitment efforts for our Community Mentoring program and the growing of our recently expanded Bigs with Badges program. Edith holds a Bachelor’s Degree in Liberal Studies from California State University San Marcos. She is committed to creating opportunities for youth through her volunteerism throughout San Diego and serves as a volunteer for College Area Pregnancy Services (CAPS).

(858) 746-9170

Mary Tucci – Facilities & Administration Manager

Mary joined Big Brothers Big Sisters of San Diego County in November of 2007 with over 25 years of experience in administrative management. As Facilities and Administration Manager, Mary is responsible for board of directors administration, human resource administration and recordkeeping, IT and facilities management. Prior experience includes working as data control manager for a government funded research program at USC School of Medicine and over 10 years in the environmental management industry in Long Beach and San Diego. Prior to joining BBBS, she worked as sales administrator and price program manager for Karl Strauss Brewing Company. Mary attended Long Beach City College, lives in Point Loma, enjoys traveling and spending time with friends and family in San Diego and Colorado.

  (858) 746-9154

Administrative and Development Team

Katie Shadrick – Events & Marketing Specialist

(858) 746-9163

Margie Freeman – Development Coordinator

  (858) 746-9153

Marie Thorsted- Bookkeeper

  (858) 746-9164

Program Team

Summer Boyer- Operation Bigs Enrollment & Matching Specialist

(858) 746-9150

Yiasemah Brunette – Senior Match Support Specialist

(858) 746-9149

Angelica Cuevas – Match Support Specialist

(858) 746-9128

Sam Mandler – Match Support Specialist

(858) 746-9156

Carmina Mireles – Match Support Specialist

(858) 746-9191

Desiree Nash –  Match Support Specialist

(858) 746-9175

Sarah Rosenbaum – Operation Bigs Program Coordinator

(858) 746-9180

Cynthia Salgado Velazquez – Match Support Specialist

(858) 746-9192

Annette Sanchez – Enrollment & Matching Specialist

(858) 746-9161

Melissa Serrano – Senior Match Support Specialist

(858) 746-9157

Brenda Suarez – Enrollment & Matching Specialist

(858) 746-9162