High-End Product Design
for B2B SaaS & Enterprises

I'm Sergey Smirnov, an independent Senior Product Designer with over 10 years of proven experience. I act as a dedicated design partner for startups and tech companies, transforming complex workflows into intuitive digital products, scalable UI/UX systems, and impactful branding.

Stellar Business Flight Operations System — UI/UX product design by Sergey Smirnov Proxuma Automation SaaS Platform — B2B dashboard and interface design by Sergey Smirnov
Secureframe Automated Compliance Platform — Web app interface design by Sergey Smirnov Upwave Brand Analytics Platform — SaaS data visualization and UI design by Sergey Smirnov
More projects

Services

I integrate seamlessly into your product team as a core design contributor. From validating an early-stage MVP to scaling complex enterprise software, I deliver end-to-end design solutions that bridge the gap between user needs and business growth.

Product Design icon

Product Design

  • Product Strategy & Discovery
  • User Research & Competitor Analysis
  • AI-Driven User Flows & UX Architecture
  • Rapid MVP Wireframing & Prototyping
  • Data-Informed UX Design
  • Usability Testing & Conversion Optimization
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UI & Visual Design

  • SaaS Dashboards & Complex Data Visualization
  • AI Feature Interfaces & Prompt UX Design
  • Cross-Platform UI Design (Web, Tablet, Mobile)
  • Scalable Design Systems
  • Interactive Prototypes & Micro-interactions
  • Custom and AI-Enhanced Illustrations & Iconography
  • Responsive Web App Design
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Marketing & Branding

  • SaaS Brand Identity & Logo Design
  • High-Converting Landing Pages & Marketing Sites
  • Pitch Decks & Investor Presentations
  • Brand Guidelines & Design Systems Scaling
  • Digital Ads & Social Media Assets
  • Product Launch Assets

Clients Say

Selected client testimonials from projects delivered independently or as a core design contributor through partner studios.

"The team at Boundless Bits is not only an invaluable addition to our product development team, but also a delight to work with. Their keen eye for intuitive UI regardless of industry has contributed greatly to creating products that our customers love using."

David Endler

David Endler

Co-Founder at SpyCloud

"The team took our software from initial mockups to a well-designed web app in a matter of months, without compromising on quality. During 2+ years working together, they've helped us iterate quickly, think through numerous design challenges, and ultimately scale to thousands of customers and become the leading platform for security and privacy compliance."

Shrav Mehta

Shrav Mehta

Founder and CEO at Secureframe

"Partnering with the team at Boundless Bits helped us create and ship product features quickly without sacrificing good design or compromising on the product experience."

Michael Pollack

Michael Pollack

Co-Founder at Intricately