Tucker Lewis


Tucker was born and raised in Cambridge, MA. She went to UMASS Amherst and graduated with a degree in Fine Arts. Tucker loves all things Cambridge and Somerville, having been a lifelong resident and member of the community. Growing up and living in Cambridge has also influenced the businesses to be locally focused and involved with various community organizations. Her love of art and building objects heavily shapes the aesthetic of the stores.  She has built cabinetry, tables, shelves, counters, and countless other items for all of our shops. Most often, she can be found either in her office scouring over numbers in Quickbooks, building something in the wood shop or eating ice cream and m&m’s for breakfast. She is happily married to Melissa and they have two kids and a dog named Ounce.

Jennifer Park


Jennifer was born in Northern California and spent the early half of her life living and growing up in Japan. While she has spent the last 25 years in Massachusetts, she attributes a great deal of her love for food, service and work philosophy to her Japanese roots. Prior to opening Diesel, Jennifer had only had a handful of jobs which included selling high end comfort shoes, cleaning the Harvard dormitory bathrooms, and scooping ice cream. It was her love for ice cream, even on a winter night, that brought the two owners together. Currently, Jennifer focuses her time at work growing the businesses long term, developing staff, thinking about food and tasting food and drinks. Jennifer also has two young kids and a partner who help keep her focused on the important things: have fun, listen to music, and work hard. She is an avid runner, bike enthusiast and loves most things that involve moving… those who know her know she doesn’t sit still for long. She has run four marathons (Boston, New York, and Chicago) and now enjoys competing in local half marathons and 10K’s.

Sydney Schofield

General Manager, Diesel Cafe

Sydney, aka Squid, moved to Boston in 2010 for college and has stayed put ever since (there are too many good noodle spots, how could she leave?). After years of waitressing and dabbling in human services, Sydney came upon Diesel Cafe in 2016 with the hope that she’d learn how to make those pretty lattes. She didn’t expect to become a manager, as well as an espresso trainer but with the support of an incredible team she is now able to show others how to pour those pretty lattes in a place that feels like a second home. When she’s not slinging cortados or making the staff listen to a Jimmy Buffet power hour, you can find her figuring out all the possible ways you can cook chickpeas, probably not doing cardio, or trying her best to keep her houseplants alive.

Jess Brasil

Chief Controller: Diesel, Bloc, & Forge

Jess began her longstanding career at Diesel in 2004 three nights a week – a refreshing departure from her full-time position as an art therapist treating adolescents with mental illness. What she used to affectionately refer to as her “fun job” became a new career direction, filled with many opportunities. Over the years, Jess has worn many hats in the company, from a decade-long stint behind the counter at Diesel, to growing and mentoring staff at Bloc, to participating on the team that opened and expanded Forge. Currently, Jess spends her days managing production, hiring and mentoring staff, managing company wide operations, orchestrating catering and special events, developing recipes, and growing the businesses. While working behind the counter at Diesel Jess met her wife Kate. They are long time Somerville residents and have a young daughter and two Boston Terriers. Jess’ superpower is her uncanny memory. An entrepreneurial spirit, she has always had a knack for customer service and enjoys the stores’ strong connections to the Somerville and Cambridge community. When she’s not at work, she enjoys music, collecting vinyl, thrifting with her wife (they make a great team spotting vintage finds), baking and cooking, and going on mini adventures with her family.

Harrison Seiler

Lead Trainer:
Diesel, Bloc, & Forge

Harrison was born and raised in Knoxville, TN. He initially moved to Boston to attend Berklee School of Music. After dropping out like so many others before him, he decided to stay put in Boston. He worked various food service jobs and a few years as a bike messenger before applying at Bloc to pursue a long-time interest in coffee. Since then, he has focused his time at work developing the coffee and tea program across Bloc, Diesel and Forge with an emphasis on educating and training staff in coffee history, knowledge and preparation. He currently spends time at all three locations working with staff on a wide range of skills including customer service, work flow and espresso preparation. Harrison lives in Cambridge with his partner and two young kids. He continues to play music in his free time while pursuing his wide ranging and ever shifting interests including literature, photography and cycling.

Sam Mulligan

Human Resources Manager:
Diesel, Bloc, & Forge

Sam is our human resources manager, and has been working with the Diesel, Bloc, Forge team since 2013. When he’s not at one of the cafes, you can find him biking around Somerville, watching Shark Week, or playing music on his gameboy. His favorite thing to do is organize fun events for our staff!


The Super:
Diesel, Bloc, & Forge

Shoe has worked with us for over a decade and literally is the only reason that Diesel, Bloc and Forge are not falling apart or broken. She started off spending her evenings as a customer studying at Diesel, then applied for a part-time position and worked behind the counter until a few years ago. Currently, she works pretty much 24/7 to ensure that all of our equipment from AC units to espresso machines to fridges to ovens and more are in functioning order. She enjoys anything with wheels and gears including trucks, motorcycles and bicycles. She has at least one of each.

Chelsea Violand

Senior Manager

Chelsea stumbled into Diesel Cafe in October 2010 while she was in town visiting for the weekend. After immediately falling in love with the atmosphere (and the music, it was Britney), she knew that this is where she was meant to be. Growing up in a small town along the coast of North Carolina, Chelsea spent most of her time fishing with her dad, rollerskating, or avoiding math class. Over the years, Diesel has been a space that has continuously shaped who she is today. It’s taught her about loyalty, leadership, perseverance, and family. To go from growing up as a kid in the South, to an adult who is continuing to grow within the DBF family, is quite a treat. When she isn’t working, you can usually find her sitting in a booth YouTubing how to fix something, reading a book about coffee, or still avoiding math class.

Evelyn Roberts

Senior Manager

Evelyn Roberts started working at Diesel Cafe in the summer of 2015 after she graduated from Mount Holyoke College. She is the Lead Trainer at Diesel, and strives to create a warm and welcoming atmosphere for each customer that walks through the doors. She grew up first outside of Chicago, IL and moved to the Boston area with her family while she was still young. She spends a portion of each summer on the chilly beaches of Maine, and tries to find opportunities to go hiking when she can. She has a devilish cat named Riley who scratches her hands on a regular basis, but is still the object of Evelyn’s undying affection. Evelyn is lucky to live amongst her best friends from her hometown and from college here in Somerville, and has found a special family amongst her coworkers at Diesel who remind her on a daily basis the importance of having fun and working hard. When she’s not busy slinging shots of espresso or leading meetings with her fellow managers, Evelyn can be found binge-watching dystopian television shows at home, out for trivia night with her friends, or getting lost in Somerville on a run.