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Daria O.DO

Daria O.

Product Designer & UX Researcher - SaaS B2B, IoT

€400/day
1 project
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Daria

Hello 👋

I am a Product Designer with 6 years of experience, a graduate of Gobelins.
I support product teams in designing complex experiences - clear, accessible, and enjoyable to use and design.

I have worked for organizations like Axione (Bouygues Construction) and about twenty freelance clients - on B2B SaaS platforms, data-dense IoT interfaces, business tools, and digital public services.

My role: transforming complex subjects into simple experiences.
Whether it's a technical dashboard, a multi-step flow, or a high-stakes platform - I always look for the interface that makes usage fluid and natural, even when the subject is dense.

What I do concretely:
  • UX Research & Strategy - Qualitative and quantitative user research, Double Diamond, discovery workshops, personas, user journey maps.
  • Product Design & Prototyping - UX/UI design from A to Z: wireframes, high-fidelity mockups, interactive Figma prototypes, complex flows, and data-dense interfaces.
  • Design Systems - Creation and structuring of scalable design systems, compliant with RGAA/WCAG.
  • AI & Augmented Tools - Figma AI, Claude, Galileo AI, Adobe Firefly integrated into the daily workflow.

My way of working:
rigorous and structured, but easy to live with. I quickly integrate into multidisciplinary teams, I like to work iteratively, and I maintain a positive attitude even on serious projects.

If you are looking for a designer capable of combining methodology, accessibility, and a real "fun to work with" attitude - let's talk 😊
  • French

    Fluent

  • English

    Fluent

  • Ukrainian

    Native or bilingual

  • Russian

    Native or bilingual

  • German

    Basic

Can work on-site
Paris (up to 50km)

Experience

  • Aquasys - Gestion de l'eau · SaaS · Secteur public
    Product Designer
    PUBLIC SECTOR
    December 2024 - March 2026 (1 year and 3 months)
    Paris, France
    Context
    End-to-end UX/UI design of an environmental data platform for public authorities, built on a SaaS architecture. Full mission from user research to iterative delivery.

    Main Actions
    • Led UX research using the Double Diamond method - from discovery to iterative delivery on a complex data platform.
    • Conducted user interviews and surveys with public officials and technical experts to identify real needs and define product strategy.
    • Synthesized qualitative and quantitative research into personas, user journey maps, and a shared product vision among multidisciplinary teams.
    • Redesigned end-to-end flows to improve data accessibility and navigation for non-technical users managing complex environmental datasets.
    • Designed data visualization interfaces - analytical dashboards, charts, reporting tools - transforming raw data into decision-support experiences.
    • Facilitated design workshops and design sprints to align technical and business stakeholders around product goals.

    Objective: Make complex environmental data accessible and actionable for public officials, by simplifying journeys without betraying the richness of the data.

    Tags: SaaS · Public sector · Double Diamond · Data Visualization · Dashboards · UX Research · Design System · Accessibility · WCAG
    UX Research User Experience Design User Interface Design Web design & UX/UI
  • Axione (Bouygues Construction)
    Product Designer - Digital Transformation of SaaS/IoT Platforms
    TELECOMMUNICATIONS
    September 2024 - September 2025 (1 year)
    Paris, France
    Context
    End-to-end UX/UI design mission on SaaS and IoT platforms for French telecommunications infrastructure - covering over 6 million connections and over 7 million potential users. Full product lifecycle management, from discovery to delivery, on data-dense interfaces for technical and non-technical users.

    Main Actions
    • Defined UX strategy and led discovery phases on complex SaaS platforms for the public and business sectors.
    • Redesigned 11 public service websites in strict compliance with RGAA/WCAG accessibility standards - full compliance and measurable usability improvement.
    • Designed and optimized SaaS IoT dashboards and data-dense business interfaces for expert and non-expert users.
    • Conducted multidisciplinary UX research using the Double Diamond method - synthesizing qualitative interviews and quantitative analytics to guide product strategy.
    • Integrated AI tools (UXPilot, Figma AI, Visily) into the design workflow to accelerate ideation, rapid prototyping, and documentation.

    Objective: Improve the user experience on critical public-interest interfaces - with accessibility, readability, and efficient user flows as absolute priorities.

    Tags: SaaS · IoT · Public sector · RGAA/WCAG Accessibility · Data Visualization · Dashboards · Double Diamond · Agile · Design System · AI-assisted Design
    Project Management User Experience Design IoT Product Strategy Customer Experience
  • DSD Rénov - Architecture
    Product Designer - Digital Presence & Design System Redesign
    CIVIL ENGINEERING
    February 2023 - March 2024 (1 year and 1 month)
    Paris, France
    Context
    Redesign and optimization of the digital presence for a service company specializing in architectural heritage restoration, with the goal of increasing visibility, lead generation, and brand consistency across all web and digital channels.

    Main Actions
    • Designed and documented a comprehensive design system ensuring brand consistency and accelerating development workflows.
    • Conducted UX research using the Lean UX approach to improve user satisfaction and flow fluidity.
    • Created high-fidelity wireframes and interactive prototypes connecting business objectives with technical constraints.
    • Optimized SEO structure and editorial content, directly impacting lead generation and organic visibility.

    Objective: Give a craft company of excellence a digital presence worthy of its know-how - consistent identity, clear journeys, improved visibility.

    Tags: Design System · Lean UX · Wireframes · Prototyping · SEO · Brand Identity · WordPress
    Business Strategy Visual Communication Web design & UX/UI User Experience Design

Reviews

5.0

Out of 1 rating

P

Pierrick

DSD Rénov

Reviewed on 10/2/2024

Excellent experience with Daria. She assisted us in establishing our graphic charter and proposed perfectly thought-out commercial materials. I recommend this specialist if you need a graphic designer or designer.

Recommendations

Anna LefourAL
Mégane VegaMV
Anna Lefour and 1 other person have recommended Daria

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Certifications

  • UX Design
    Google
    2022
  • IBM Generative AI: The Future of UX/UI Design
    IBM
    2026

Skill set

Categories