Our Staff

Jenny Werba

Instagram: @jwerba

Owner & Head Coach

Jenny’s lifelong involvement in athletics naturally led to coaching. In college she developed her skills teaching Tang Soo Do and Doce Pares studio. Jenny expanded her athletic passion, incorporating pilates and static trapeze to performance level.

When she stumbled upon CrossFit, she was immediately hooked. After working to earn her level 2 CrossFit (now referred to as level 4) coaching certification, she opened United Barbell. Jenny followed her passion to become a national level Olympic lifter, currently competing for the California Strength Olympic Weightlifting team.


Certified CrossFit Level 2 Trainer
BIRTHFIT Regional Director
USA Weightlifting Advanced Sports Performance Coach
CrossFit Nutrition
CrossFit Olympic Weightlifting
CrossFit Movement & Mobility
CrossFit Football
CrossFit Kids
California Strength Olympic Lifting Certification

Olivia Graff - Owner & Coach


Instagram: @ohshitcrossfit

Olivia's athletic origins lie in gymnastics and circus arts. After finding CrossFit in 2007, she became obsessed, and three years later left her IT career and opened United Barbell.

Olivia is particularly passionate about helping people who are new to fitness find joy in their growing athletic abilities. Since the birth of her daughter in 2013, Olivia can add helping little ones find their athletic path to her list of passions.

Certified CrossFit Level 2 Trainer
USA Weightlifting Sports Performance Coach
CrossFit Olympic Weightlifting
CrossFit Movement & Mobility
CrossFit Football
CrossFit Kids
CrossFit Powerlifting

Steve Wong

Instagram: @tigersfury

CrossFit & Powerlifting Coach

Steve walked into the doors of United Barbell just wanting to learn. With no formal athletic background, he was a quick learner and was passionate at getting better. Steve obtained his Level 1 a year later and starting helping others who started just like him.

He loves to teach and takes great joy in seeing others succeed. He will forever have an eternal fire for "just wanting to know" and has already studied many different powerlifting and body weight strength modalities. He continues to increase his knowledge through other Crossfit and other certifications. 


Certified CrossFit Level 2 Trainer
CrossFit Football
CrossFit Powerlifting
CrossFit Kids

Nikki Staley - CrossFit Coach, Nutrition Coach

Instagram: @niksnutrition

A former Bikram Yoga practitioner, distance runner and triathlete, Nikki was known for jumping around from active hobby to active hobby.  But for some reason CrossFit has kept her ever-active mind entertained. Maybe it's that "constantly varied" thing. Or maybe it's all the awesome people she gets to work with every day. Nikki's true passion is helping people reach their goals, especially when it comes to their health and wellness. In 2012, she left her corporate work in human resources to pursue a career in fitness and nutrition. She runs her own business as a Health & Nutrition Coach, and also does volunteer work with groups like Cooking Matters. Nikki is also on the Board of Directors for Westside Athletes Associations, a not-for-profit organization that implements functional fitness programs in SF Bay Area middle and high schools. 

CrossFit Level 2 Trainer
Precision Nutrition Level 1
Institute for Integrative Nutrition & IAHC Certified Health Coach
Brand X Advanced Kids Course
Freestyle Connection Movement Seminar
Gymnastics Seminar with Dusty Hyland
Gymnastics Seminar with Nicole Zapoli
California Strength Olympic Weightlifting Certification with Dave Spitz
Wu Chuanfu Olympic Weightlifting Seminar

Jason Luk - CrossFit Coach


Instagram: @coachjasonluk

Jason has been CrossFitting for nine years and joined United Barbell after he moved to the city in September 2012 transferring from CrossFit Milpitas.  A former Cross Country and Track Runner, he remains a competitive athlete with his first competition being the 2008 CrossFit Games and has been diving into local competitions as well as entering in The Open every year.

Outside of the gym, Jason is a Wellness Ambassador at AOL where he coordinates healthy office programs and also provides one on one coaching for high-performing individuals who seek to overcome plateaus in certain areas of their life whether it be eating, exercise, sleep, stress or more.  He's committed to helping clients grow into their full potential to lead fulfilled and driven lives after having overcome corporate burnout himself.

Certified CrossFit Level 1 Trainer
Certified Wellness Coach

Jack Lambert - CrossFit Coach


Instagram: @worthxwhile_

Jack is a former Marine whose passion for fitness took him from his career as an EMT into a full time CrossFit coach.

Jack discovered his love of CrossFit when using it to train during his military career. After spending a period of time "bro-lifting," he discovered he needed a more well-rounded training methodology and returned to CrossFit after being inspired by CrossFit Games athletes.

He enjoys petting dogs, drinking coffee, and living his best life.

Certified CrossFit Level 1 Trainer

Dave Huynh - Olympic Lifting Coach


Dave was a high school distance runner and tennis player. Ironically, he does neither of these sports anymore, and is a dedicated competitive Olympic weightlifter. His current goal is qualifying for the American Open.

While in grad school, Dave discovered CrossFit after getting a coupon handed to him. He joined United Barbell as an athlete in 2012 and fell in love with the community, making UB his home away from home. After completing much of his CrossFit certifications for his own personal development, Dave decided to embark upon UB's internship program and become one of our resident Oly coaches, moonlighting as "CrossFit Dave" once year during the CrossFit Open.

Certified CrossFit Level 1 Trainer
USA Weightlifting Sports Performance Coach
Masters Olympic Weightlifting Programming with Zygmunt Smalcerz

Jackeline Rodriguez - Admin, Ray of Sunshine


Jackie is an SF native and former cheerleading athlete who sidelined her fitness until she discovered CrossFit. At first she was intimidated but with the support of her co-workers is now proud to call herself a CrossFit athlete!

In her spare time Jackie enjoys visiting art galleries, museums, traveling, and always living her best life.