Product Designer (UX / UI)

UX/UI

Product Designer (UX / UI)

UX/UI
Krakow, Kraków

Rimthan LAB

Full-time
B2B
Senior
Remote
3 298.38 - 5 497.30 USD
Net per month - B2B

Job description

Role Purpose

The Product Designer is responsible for turning early-stage ideas into clear, testable product experiences at speed. This is a delivery-focused role. The designer works comfortably in ambiguity, simplifying complex problems into intuitive user flows, wireframes, and prototypes that keep ventures moving forward.


The role balances strong UX thinking with pragmatic UI execution, ensuring designs are usable, feasible, and ready for fast implementation.


The role reports directly to the CPO, Marcus Wiberg: https://www.linkedin.com/in/marcuswiberg/


Core Responsibilities

Fast UX and UI Execution

  • Translate assumptions and incomplete requirements into clear user flows, wireframes, and prototypes

  • Design quickly to support validation and decision-making, not perfection

  • Iterate rapidly based on feedback, constraints, and new inputs

  • Make smart design decisions with limited or no formal research

Design Delivery and Systems

  • Create intuitive, human-centered UI and UX under tight timelines

  • Deliver designs that engineers can implement with minimal clarification

  • Maintain, evolve, and reuse design systems, components, and patterns

  • Optimize consistency and speed across ventures through shared UI foundations

AI-Accelerated Design Work

  • Use AI tools to speed up ideation, synthesis, wireframing, and prototyping

  • Reduce time spent on repetitive or low-value design tasks

  • Apply AI pragmatically to increase throughput, not complexity

Cross-Functional Collaboration

  • Work closely with venture builders, PMs, and engineers to maintain momentum

  • Communicate design intent clearly and efficiently

  • Represent design confidently in fast-moving, client-facing settings

  • Avoid over-analysis and keep teams focused on delivery


Tech stack

    English

    C1

    Communication clarity

    advanced

    Prototyping

    advanced

    User Flows

    advanced

    wireframing

    advanced

    Workshop facilitation

    advanced

    Lean UX

    advanced

    UX Design

    advanced

Office location

Published: 02.02.2026