I am a UX design-certified technical professional with over 4 years of experience designing and building high-traffic e-commerce experiences at Target. I blend strong UX design fundamentals with hands-on React development to translate complex requirements into accessible, performant user interfaces. I have experience in rapid iteration, A/B testing, and collaborating across UX, product, accessibility, and backend teams to define requirements and user journeys. I enjoy leading cross-functional teams, running agile ceremonies, and mentoring others to improve processes and outcomes.

Leah Kosmin

I am a UX design-certified technical professional with over 4 years of experience designing and building high-traffic e-commerce experiences at Target. I blend strong UX design fundamentals with hands-on React development to translate complex requirements into accessible, performant user interfaces. I have experience in rapid iteration, A/B testing, and collaborating across UX, product, accessibility, and backend teams to define requirements and user journeys. I enjoy leading cross-functional teams, running agile ceremonies, and mentoring others to improve processes and outcomes.

Available to hire

I am a UX design-certified technical professional with over 4 years of experience designing and building high-traffic e-commerce experiences at Target.

I blend strong UX design fundamentals with hands-on React development to translate complex requirements into accessible, performant user interfaces. I have experience in rapid iteration, A/B testing, and collaborating across UX, product, accessibility, and backend teams to define requirements and user journeys. I enjoy leading cross-functional teams, running agile ceremonies, and mentoring others to improve processes and outcomes.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
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Language

English
Fluent

Work Experience

Frontend Engineer – UX & Interaction Design at Target
February 1, 2021 - Present
Translated high-fidelity Figma designs into responsive React components, ensuring 1:1 design fidelity and rigorous accessibility (WCAG) compliance for features such as Ratings & Reviews and AI chatbot. Designed UI via wireframing and UX explorations on a 6+ month Fulfillment space engagement. Collaborated with UX, accessibility, product owners and backend API teams. Frequently ran A/B experiments to gain production analytics insights. Improved performance with lazy loading and migration optimizations. Led Scrum team retros and standups to facilitate thoughtful discussions and improve processes. Participated in on-call schedule, ran canary env tests and responded to incoming issues.
Software Engineer Intern at Target
June 1, 2020 - December 1, 2020
Backend scrum team responsible for monitoring measurements and logging.
Software and Controls Intern at Eaton
May 1, 2019 - August 1, 2019
Wrote provisioning, telemetry and test automation scripts in Python, and presented results to engineering.
Computer Engineer Co-op at Moen
August 1, 2018 - January 1, 2019
Conducted UI/UX research to improve mock app and updated designs with outsourcing partners.
Co-op Computer Engineer at Moen
August 1, 2018 - January 1, 2019
Conducted UI/UX research to improve a mock app and implemented updates with outsourcing. Wrote lab test automation scripts in Python and C; managed on GitHub.

Education

UX Design Certification at University of Minnesota
May 1, 2025 - March 5, 2026
Bachelor of Science, Computer Engineering at Illinois Institute of Technology
January 11, 2030 - December 1, 2020
UX Design Certification at University of Minnesota
January 11, 2030 - May 1, 2025
Bachelor of Science, Computer Engineering at Illinois Institute of Technology
January 11, 2030 - December 1, 2020

Qualifications

UX Design Certification
January 11, 2030 - May 1, 2025
Design Fundamentals Course – DSGN 101 (CCSF)
January 11, 2030 - March 5, 2026

Industry Experience

Software & Internet, Retail, Professional Services, Manufacturing, Media & Entertainment