Stefan Čubrilo
Stefan is an experienced UX/UI Designer with over 9 years of expertise in SaaS, website projects, and niche designs like the Slack app. He has worked both independently and with international teams, from discovery to final solutions and upgrades of existing projects
UX/UI Designer
Calendly - Marketing WebpageMarch 2024 - March 2025
Calendly leads the way in automated meeting scheduling, offering team-based scheduling solutions and integrations with advanced security features.
Designing key components from the earliest stages for various purposes: mobile navigation, the pricing page, breadcrumbs, a unified dropdown component, and blog TOC elements.
Working on prototypes for mobile navigation and the table of contents to validate design decisions, testing interactive components in action, and facilitating communication and collaboration with developers.
Working as an individual contributor on a project together with another UX/UI Designer from the Calendly team, while the wider team consisted of 2-3 developers, a project manager, and supporting roles.
Main tech stack:
Figma, Loom.
UX/UI Designer
FatCat Coders - Webpage & PlatformJanuary 2024 - ongoing
Working on the main FatCat Coders Platform website that underwent a complete redesign, focusing on stylization, new components, and a refreshed visual identity, including typography and a new color palette. This project involved direct collaboration with the CEO, Product team, and FatCat Coder developers.
As a result, a new Design System was built from scratch. It covered foundational elements that defined the theme and overall look (color, typography, spacing, etc.), as well as more complex components like avatars, buttons, cards, form elements, navigation, modals, sections, and templates.
Additionally, collaboration with the Sales & Marketing team led to the creation of promotional materials for the new platform, including a Pitch Deck and Client Portfolio.
Main tech stack:
Figma, FigJam, Figma Slides, Adobe Illustrator, Jitter, Loom.
UX/UI Designer
FatCat Coders - DunjaAIOctober 2024 - ongoing
Dunja is an AI assistant that can help you manage your projects with less effort and more efficiency, without leaving Slack.
Working within the specific environment of Slack's design possibilities, using a predefined UI Kit and potential use cases, with the aim of creating the most intuitive solution for the user.
Starting with product discovery and necessary research, leading to the initial wireframes and architecture for the upcoming Slack application.
This required direct collaboration with developers and a different approach than typical UX/UI design projects, all while working as a sole designer.
Main tech stack:
Figma, Loom, Block Kit (Slack UI Kit).
UX/UI Designerr
Safa TeamJune 2024 - September 2024
SAFA offers advanced cybersecurity solutions and threat intelligence services to protect organizations, with a focus on the APAC region.
Redesign of the main webpage for Safa Team to showcase their cybersecurity solutions and threat intelligence services, including multiple pages.
With the need to establish a new webpage, created the initial version of the style guide based on predefined brand guidelines from Safa Team.
Worked directly with the CEO, members of the product team, and a full-stack developer.
Main tech stack:
Figma
UX/UI Designer
SuperawesomeMay 2020 - February 2024
Superawesome is a digital design agency that helps businesses leverage well-designed digital products and services, offering solutions from product launch to creative department growth.
Designed user interfaces and experiences for an e-commerce website serving the USA, as well as multiple websites, SaaS products, internal processes, templates, and design-dev handoff guides.
Created a comprehensive design system from scratch, including custom iconography sets, reusable styles and components, and fully responsive, user-friendly elements.
Promoted and advocated for design systems as Head of Design Systems, supporting teams across the company.
Led the development of a fully custom Shopify Bundles Web App, achieving a 65% increase in conversion rates (3.5% → 5.8%) and a 27% increase in average order value (AOV: $75 → $95).
Enhanced customer satisfaction (NPS 30+), leading to stronger customer loyalty and positive word-of-mouth.
Main tech stack:
Figma, FigJam, Adobe Illustrator, Miro.

English
Basketball
Gym
Photography

Kevin Skibbe
Head of Engineering @ Calendly
Go-to platform for team scaling
I appreciated the FatCat Coders' dedication to quality, timeliness of the work, and ability to be flexible to meet our needs. Their level of responsiveness and engagement was wonderful.

Ron Shah
CEO @ Bizly
Reliable and Responsive Developers
I’m happy with how Bizly and FCC worked together. I highly value the experts they provided for our products and how reliable and responsive they are. This simplifies collaboration significantly!
