Are you ready to take your business or product to the next level? Do you want to disrupt or change your industry? Do you want to build something that really matters?

Then you’ve come to the right place. Treeline Interactive has been helping everyone from startups to enterprise companies develop game-changing products for more than 10 years now.

And we’ll not only design your product - we’ll build it too. We build software and hardware solutions.

Our dedicated team of award-winning developers, designers, engineers, and strategists build mobile apps and wearables, solutions for the Internet of Things (IoT), including hardware, and complex web applications.

Companies come to Treeline for creative breakthroughs and technical leaps forward. Whether you want to supplement your team’s expertise on new ventures or scope a project from start to finish, Treeline can help.

We work with industry-leading companies in fields like medical devices, beauty, action sports, logistics, and entertainment. We enjoy being the agile team that helps corporations radically reinvent themselves and the supportive structure that helps startups iterate and get to market.

Unique solutions require unique individuals, and we have attracted the best. Our team is willing to do almost anything to make an impact. We’re serious. Our comprehensive testing has required them to jump out of planes, surf, snowboard, survey from a helicopter, and manage data from the Arctic. All in a day’s work!

As a company, we’re also raising environmental awareness with tree planting, green ride services, and our fleet of skateboards. We have a great office space a block from the beach in beautiful San Diego, and we want to do everything we can to keep it that way.

Our goal is to profoundly change how people interact with the world around them. We hope you’ll join us.


  • Jake Fields


    Jake Fields is a leader in tech product development and IoT infrastructure. He co-founded his first tech company at age 22 and three additional companies over a the past decade. Jake has also leveraged his personality and entrepreneurship to build a distinctive company brand that embraces the Southern California lifestyle of creativity, recreation, and flexibility. His leadership has spawned innovation movements in manufacturing, transportation, aerospace, entertainment and the medical industry; partnering with public and private sectors leaders including: ESPN, Viacom, Loreal, PWC, Schneider, Lilly, Carlos Slim institute, FDA and NASA.

    Beyond his other accomplishments Jake also taught at both SDSU and UCSD, along with other colleges across the west coast, lecturing about digital innovation. Jake is also an accomplished adventurer and athlete, enjoying snowboarding, hiking, big wave surfing, and other action sports.

  • Mark Modzelewski

    General Manager

    Mark is a seasoned start-up executive having founded numerous successful companies and serving as a senior executive at others. After years of founding, funding and managing leading start-ups in the US and Europe, Mark and his dog Sunny have returned to California to help head operations at Treeline.

    Mark has had an eclectic and distinguished career at the junction of technology, policy and entrepreneurship, focused on taking companies and products from concept to launch to exponential growth. When he's not at the offices, he is an activist, strongman athlete, and conceptual artist whose work has appeared in numerous galleries and museums.

  • Carter Casner

    VP of Operations

    Carter Casner has worked in many different roles across the production team at Treeline since joining in 2012. His experience in project and product management brings immense value to the discipline and structure of how Treeline approaches projects of varying size and scope.

    Carter has a diverse background, before Treeline Carter worked in marketing and product development at venture-backed San Diego Startup Mogl (now Empyr), a mobile, transaction-based consumer loyalty and rewards business. He also worked at MojoPages where he was responsible for product marketing and implementing game mechanics to drive user engagement.

    In his spare time Carter loves skiing, surfing, spear fishing and spending time trying to get his daughter and wife to love those things as well.

Treeline Family

Home Sweet Home

We were born out of the mountains but have stretched our roots to the beach. While the Treeline team spans the world, we gratefully designate San Diego, California as our home.

Our Roots

Founded in the mountains of Lake Tahoe in 2004, we’ve since moved to the shores of San Diego, which we gladly call home. For over ten years we’ve helped companies ranging from medical device innovators to destination resorts to sports conglomerates modernize their businesses and bring new products to market.

Industry Awards

The true measure of success is with qualitative metrics but once in a while it sure is nice to get a pat on the back from your peers. Over the years we have been fortunate to win a number of awards for a diverse set of our creations.