Senior Interaction Designer (in person)

Job Description

Job Description

Our teams build products that keep planes flying, help first responders save lives, and allow farmers to feed the world. Our clients range from Fortune 100 enterprises to fast-moving startups. Founded in 1988, SEP is one of Indiana’s largest software product development and design companies.

Why SEP for Your Design Career

At SEP, you won’t just design screens—you’ll define how systems behave. As a Senior Interaction Designer, you’ll embed with client teams to tackle complex, meaningful problems. From internal tooling to consumer-facing apps, you’ll shape behavior, logic, and flows that connect real-world needs with digital systems.

We’re not an agency—we’re a consultancy. We co-create with our clients, guiding not just what we build, but how we build it. Designers at SEP influence product direction, align cross-functional teams, and raise the bar for design maturity across industries.

Design maturity here grows through practice. You’ll solve real problems, reflect with peers, and share what works. Senior designers lead by example—coaching others through collaboration, critique, and modeling clear decision-making.

We value assertiveness and empathy in equal measure. You’ll need to read the room, push when it matters, and navigate ambiguity with care. It’s about asking better questions, asserting ideas thoughtfully, and knowing when to agree to disagree.

You Might Be Our Next Senior Interaction Designer If You :

• Thrive on the complexity of software systems—and have the experience to back it up
• Align user needs, technical constraints, and business goals to create real impact
• Bring energy and clarity to design conversations and client engagements
• Collaborate closely with engineers, PMs, and stakeholders—and help the whole team work smarter
• Are available to work on-site full-time at our Carmel, IN headquarters

Responsibilities and Duties

Required Qualifications

Bonus Points

SEP is a software product design and development company located in Westfield, IN. We provide powerful teams of thoughtful developers and designers to bring ideas to life. Founded in 1988, SEP is one of Indiana’s largest software development firms with 170 employees. Our clients span from Fortune 100 to scale-up companies. We are 100% employee-owned through an ESOP and are consistently recognized for our great culture (Top Workplaces, Best Place to Work in Indiana, Techpoint Mira Exceptional Employer).

We are an equal opportunity employer. All employment is decided based on qualifications, performance, merit, and business need. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, veteran status, or any other status protected under federal, state, or local law.