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Hi, I'm Shirin Semsar, a Senior Product Designer with 12+ years shaping complex B2B SaaS, AI-driven platforms, and data-heavy dashboards. I lead end-to-end product design, build and scale design systems, and partner closely with product and engineering teams to drive measurable business impact. I also mentor designers and collaborate across legal, data, and engineering stakeholders to deliver outcomes that matter.…Hi, I'm Shirin Semsar, a Senior Product Designer with 12+ years shaping complex B2B SaaS, AI-driven platforms, and data-heavy dashboards. I lead end-to-end product design, build and scale design systems, and partner closely with product and engineering teams to drive measurable business impact. I also mentor designers and collaborate across legal, data, and engineering stakeholders to deliver outcomes that matter.

Shirin Semsar

UX Designer, Product Designer, UI Designer, +2

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Hi, I'm Shirin Semsar, a Senior Product Designer with 12+ years shaping complex B2B SaaS, AI-driven platforms, and data-heavy dashboards. I lead end-to-end product design, build and scale design systems, and partner closely with product and engineering teams to drive measurable business impact. I also mentor designers and collaborate across legal, data, and engineering stakeholders to deliver outcomes that matter.…Hi, I'm Shirin Semsar, a Senior Product Designer with 12+ years shaping complex B2B SaaS, AI-driven platforms, and data-heavy dashboards. I lead end-to-end product design, build and scale design systems, and partner closely with product and engineering teams to drive measurable business impact. I also mentor designers and collaborate across legal, data, and engineering stakeholders to deliver outcomes that matter.

Available to hire

Hi, I’m Shirin Semsar, a Senior Product Designer with 12+ years shaping complex B2B SaaS, AI-driven platforms, and data-heavy dashboards.
I lead end-to-end product design, build and scale design systems, and partner closely with product and engineering teams to drive measurable business impact. I also mentor designers and collaborate across legal, data, and engineering stakeholders to deliver outcomes that matter.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Lead Product Designer at Thumb Zone AI

February 1, 2025 - Present

Lead end-to-end product design across web and mobile, from discovery and user testing to high-fidelity prototypes and developer handoff. Partnered with PMs and engineers to align user needs with business goals in AI-driven workflows. Redesigned onboarding experience, increasing successful user study setup by 30%. Ensured high-quality implementation through close collaboration with engineering teams.

UI/UX Designer at LexisNexis

August 1, 2022 - January 1, 2025

Led design for fraud detection dashboards used by legal and enterprise users, increasing time-on-screen by 20%. Designed complex interaction models and data visualizations, collaborating with legal, IT, and analytics teams. Contributed to and extended the enterprise design system by defining new reusable components. Created marketing and interactive assets aligned with brand guidelines.

UX Designer at Celsius Network

December 1, 2017 - May 1, 2018

Analyzed and interpreted crypto app data requirements; collaborated with the CEO and CTO to outline goals, wireframes, and prototypes to support a $50M funding round. Created marketing materials including corporate identity, branding, catalogs, and ads; produced white papers, one-pagers, business cards, swag, and trade-show graphics. Collected feedback from teams and iterated using Visio and Keynote.

Product Designer at Electrifi AI

July 1, 2019 - December 1, 2019

Built and mentored a small design team delivering multiple AI/ML-based SaaS products. Designed data-intensive AI platforms that reduced onboarding time by 14%. Worked in an agile cross-functional team with PMs, engineers, and stakeholders across product lines.

UI/UX Designer at University of California, Irvine, Institute for Future Health

June 1, 2021 - August 1, 2022

Collaborated with researchers, PhD students, and faculty on digital health initiatives. Redesigned and optimized a WordPress-based platform, increasing organic traffic by 50%. Reduced landing-page bounce rate from 20% to 9% through UX and content improvements.