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Colorado Staff

  • Sonja Semion

    Executive Director
    ssemion@stand.org
    720.292.1906
    Sonja's passion for improving public education comes from her decade-long career working to address the systemic effects of poverty.

  • Mateos Alvarez

    Denver Metro Director
    malvarez@stand.org
    Mateos has a proven track record in grassroots organizing, campaign building, and political campaign implementation. Through his extensive experience in community organizing and leadership work, Mateos has assisted many resident leaders to work on issues at the local, state, and national level that include healthcare, education, public safety, affordable housing, and immigration.

  • Bill Jaeger

    Policy Director
    bjaeger@stand.org
    720.292.1908
    After attending Cheyenne Mountain High School in Colorado Springs, Bill earned a bachelor’s degree from Dartmouth College magna cum ladue and a master’s in education from Harvard Graduate School of Education.

  • Dulce Saenz

    Denver Organizer
    dsaenz@stand.org
    720.891.9313
    Originally from Chihuahua, Mexico, Dulce grew up in rural Colorado since the age of two and attended Weld County Public Schools.

  • Christian Springer

    Denver Organizer
    cspringer@stand.org
    303.638.6603
    Christian joined Stand for Children in June 2012 as an organizer in the Far Northeast region of Denver to engage parents, teachers, and community members to take part in closing the achievement gap as a means to break the cycle of poverty in the Denver metro area.

  • Felipe Vieyra

    Denver Organizer
    fvieyra@stand.org
    720.409.7061
    Felipe works with Stand as an organizer in Southwest Denver. Originally from Morelia, Michoacan, Mexico, Felipe came to the United States with his family at the age of two in the pursuit of a better life.