ABOUT DUET DESIGN GROUP

The Duet Legacy

Two Distinct Visions. One Shared Foundation.

Devon and Caleb Tobin lead the Duet companies with a unified belief that architecture, interior design, and construction should move as one. What began as parallel callings has evolved into a fully integrated practice—where collaboration replaces compromise, artistry meets precision, and every detail reflects a shared pursuit of enduring beauty and function.

Devon About 1

Meet Devon Tobin

Principal, Duet Design

Devon About 1

Devon Tobin was born and raised in Colorado, where creativity and grit go hand in hand. As the principal and founder of Duet Design, she’s built her career on equal parts instinct and intention—blending the artistry of design with the discipline of leadership. Her work doesn’t just transform homes; it transforms how people experience living.

A natural collaborator and identical twin, Devon has always understood balance—the give and take between vision and execution, emotion and structure, beauty and function. That sensibility defines her approach to design and to life. She leads her team and her clients with clarity, empathy, and an unrelenting drive to elevate the standard of luxury living.

Since founding Duet Design in 2011, Devon has expanded the brand into a broader ecosystem alongside her husband and business partner, Caleb Tobin, integrating design and construction under one philosophy: homes should be built as thoughtfully as they’re designed. Together, they’ve shaped Duet into one of Colorado’s most respected and forward-thinking firms, known for its balance of process, artistry, and heart.

Devon’s approach is intentional and deeply human. She listens first, designs second, and leads with conviction—turning complexity into ease and vision into reality. Her work is sophisticated but never sterile, layered with emotion, restraint, and a sense of lived-in luxury that has become the Duet signature.

When she’s not leading her team or collaborating with Caleb on new projects, Devon is a proud mom to two boys who keep her grounded, inspired, and constantly creating a life as intentional as the homes she designs.

Meet the Duet Design Group Team

Sydney McManness Open bio

Sydney McManness

Sydney has known since she was a child that she wanted to be an interior designer. She began her career at a design/build firm and then happily landed at Duet Design Group in 2019. (She went to an event at which principal Devon Tobin was speaking and asked for an interview!) Sydney loves every aspect of her work because Duet’s unique process enables the team to create a collaborative environment that makes the most of each member’s best skills. In her free time, Sydney loves to organize. (Yes, really.)

Close bio

Sydney McManness

INTERIOR DESIGNER / ASSISTANT PM

Tracey Ranta Open bio

Tracey Ranta

A lifelong creative, Tracey’s love of studio art began at boarding school on the East Coast and led to a BFA in graphic design from the University of Denver. For more than 20 years, she’s worked in advertising, where her favorite projects involved developing residential design brands, so her job at Duet is a dream come true. Here, Tracey indulges her obsession with interior design, art, and architecture to promote a luxury brand that’s fueled by a team of passionate, organized, authentic women. Tracey loves a good live-music show, and she finds inspiration in nature and time with her daughter and two Sussex Spaniels.

Close bio

Tracey Ranta

CREATIVE DIRECTOR

Abbie Jahn Open bio

Abbie Jahn

With an undergraduate degree in chemistry and an MBA, Abbie worked for 25 years in the pharmaceutical and nutrition industry — which required her to move often. (She has lived in France, Thailand, China, Russia, and Japan!) She became a pro at transforming a new house into her own home and developed a love of interior design, which inspired her to go back to school, earn an interior design degree, and switch careers. Today, Abbie loves combining her business experience with her passion for beautiful interiors at Duet Design Group.

Close bio

Abbie Jahn

PROJECT COORDINATOR

Donna 9 RT Open bio

Donna Wintzen

Donna has 20 years’ experience in architectural, structural, civil, electrical, and interior design, in both residential and commercial environments. While she spent a nine-year stint in civil and electrical engineering, her first love is architecture and interior design. The thrill of taking initial ideas, carrying them through construction, and seeing the end results come to life never gets old. Nor does this tale from Donna’s childhood: When she was about 10 years old, Time magazine photographed her for being part of one of the youngest ballroom dancing couples in Denver. Alas, she never saw the photos—but she had a ball!

Close bio

Donna Wintzen

SENIOR DESIGN DRAFTER

DDG Tikka 700x932px scaled Open bio

Tikka Svendsen

Tikka’s career began in wedding design and coordination, and since then, she’s built a professional path through various jobs that all have the same theme: “They’ve made me a passionate organizer of people and things,” she says. This experience, coupled with a lifelong love of luxury home design, makes Tikka an ideal administrative support to Duet’s detailed operations and vibrant team. (Fun tip: When you pop by our office, ask Tikka about growing up without electricity!)

Close bio

Tikka Svendsen

ADMINISTRATIVE COORDINATOR

Lezlie Goldberg Open bio

Lezlie Goldberg

Mom to Duet principal Devon Tobin and equipped with decades of experience in the nonprofit world, Lezlie has led the Duet Design Foundation since its inception in 2014. Volunteerism has been part of Lezlie’s DNA since her days as a hospital candy striper, and she’s served in schools, religious organizations, and the community, including significant fundraising for the Jewish community as chair of large-scale events. She loves to meet the needs of people around her, especially individuals who are facing difficult seasons, and she’s energized by the Foundation’s mission to “help heal through thoughtful design.” Lezlie says she lives her best life now, with time for herself, her incredible family, her eight delightful grandchildren, golf, travel, and lots of laughter.

Close bio

Lezlie Goldberg

EXECUTIVE DIRECTOR OF THE DUET DESIGN FOUNDATION

Careers

Join Our Growing Team

We’re looking for a Mid-Level Interior Designer (Level III) to bring creativity, precision, and passion to our team. This role calls for a designer with strong project experience—someone who can confidently develop design concepts, manage documentation, and collaborate with both clients and colleagues to deliver homes defined by livable luxury. At Duet, this position plays a vital role in transforming ideas into thoughtfully executed designs that reflect clarity, sophistication, and emotional intelligence.

Duet Design is seeking a Senior Interior Designer (Level IV) to lead high-end residential projects with creativity, clarity, and expertise. This role is ideal for an experienced designer who thrives on guiding clients through a full-service process—shaping vision, mentoring team members, and ensuring each detail aligns with Duet’s standard of livable luxury. As a senior leader, you’ll play a key role in setting the tone for design excellence and elevating every project you touch.

To apply, send resume and cover letter to careers@duetdesigngroup.com

FAQs

Our team, led by principal Devon Tobin, works collaboratively on projects because each designer brings distinctive expertise to our work. This approach allows us to give the full force of our talent to every client.

You will have a lead designer for your project who responds promptly to all of your questions.

 Our tailored, one-of-a-kind process will lead you through a thorough and multi-step exercise designed to identify the elements of interior design that you find most beautiful and compelling. We know how to help each client find the look that best suits their preferences and lifestyle, and we look forward to helping you find yours!

Awards & press