Zinaida Iller - Founder & Senior UX Consultant

Q: Where is Zinaida based?

Zinaida is based in Sofia, Bulgaria and can operate in on-site , hybrid , and remote work models.

Q: What languages does Zinaida speak?

Zinaida speaks the following languages: Bulgarian (Native), German (Advanced), English (Intermediate) .

Q: How many years of experience does Zinaida have?

Zinaida has at least 31 years of experience. During this time, Zinaida has worked in at least 10 different roles and for 10 different companies . The average length of individual experience is 3 years and 1 month . Note that Zinaida may not have shared all experience and actually has more experience.

Q: What is Zinaida's latest experience?

Zinaida's most recent position is Lead UX/HCD Consultant (Senior UX Manager – HCD & Accessibility) at Bundeswehr / BWI .

Q: What companies has Zinaida worked for in recent years?

In recent years, Zinaida has worked for Bundeswehr / BWI and zinosign® .

Q: Which industries is Zinaida most experienced in?

Zinaida is most experienced in industries like Information Technology , Professional Services , and Aerospace and Defense . Zinaida also has some experience in Automotive , Telecommunication , and Transportation .

Q: Which business areas is Zinaida most experienced in?

Zinaida is most experienced in business areas like Product Development , Quality Assurance , and Information Technology . Zinaida also has some experience in Project Management , Sales , and Research and Development .

Q: Which industries has Zinaida worked in recently?

Zinaida has recently worked in industries like Information Technology , Professional Services , and Aerospace and Defense .

Q: Which business areas has Zinaida worked in recently?

Zinaida has recently worked in business areas like Product Development , Quality Assurance , and Information Technology .

Recommended expert

Sofia, Bulgaria

Check rate

Experience

Mar 2021 - Mar 2026

5 years 1 month

Germany

Lead UX/HCD Consultant (Senior UX Manager – HCD & Accessibility)

Bundeswehr / BWI

Conceptualized and implemented three web portals and an app for IAM/self-service functions in a safety-critical environment.
Collected and structured accessibility requirements at the component level according to WCAG 2.2, BITV 2.0, and EN 301 549 in the design system.
Developed and optimized microcopy: labels, help texts, system and error messages following terminology and writing guidelines.
Conducted continuous accessibility and usability reviews using axe DevTools, Lighthouse, WAVE, and Accessibility Insights.
Integrated HCD methodology into agile processes: backlog management, sprint planning, reviews, approvals, and documentation.

May 2019 - Dec 2020

1 year 8 months

Germany

Senior UX-Consultant

EnBW / Netze BW

UX consulting and conceptual design of a mobile B2B app for construction coordinators to conduct on-site briefings, approvals, and material orders.
User-centered analysis, workshops, and interviews to validate requirements and usage scenarios.
Created workflows, navigation structures, wireframes, and click dummies in Axure and Figma.
Developed a modular style guide including an icon system for consistent UI components.
Agile integration of requirements, decisions, and iterations with an interdisciplinary team.

Jan 2019 - Jan 2021

2 years 1 month

Germany

Senior UX Designer / UX Lead

SYNA GmbH / Süwag Energie AG

UX design for digital grid connection services (two portals) and relaunch of the 'Meine Süwag' app.
Developed information architectures, user flows, and use cases for key self-service processes.
Redesigned app features for contract and consumption management including expert reviews, wireframes, and prototypes.
Visual UI design with a modular style guide structure, icon design, and reusable UI components.
Integrated accessibility into concept and design, quality assurance using Sim Daltonism and CCA.
Agile collaboration with product owners, development, and other stakeholders via Jira/Confluence.

Jul 2018 - Dec 2020

2 years 6 months

Germany

Senior UX Designer / Senior UX Consultant

DKV Mobility Services

UX design for web-based fleet management services (FleeMa) and a mobile app (App&Go) for managing fuel cards and toll solutions.
Conceptualized workflows, interaction patterns, and visual systems for B2B and app services.
Developed and maintained modular style guides and icon fonts for reusable UI components.
Created interactive click dummies in Axure, Adobe XD, and Sketch with iterative validation.
Close agile collaboration with product owners, developers, and testers to integrate UX decisions.

Sep 2008 - Aug 2009

1 year

Munich, Germany

Lecturer in Interface Design (Bachelor program)

Mediadesign Hochschule für Design GmbH

Taught in the bachelor's program focusing on user-centered conceptualization and design of digital interfaces (UX/UI).
Taught methods in information architecture, prototyping, usability, and accessible design.
Supervised hands-on student projects.

Feb 2007 - Jun 2024

17 years 5 months

Munich, Germany

Founder & Senior Consultant HCD, UX & Accessibility

zinosign®

Lead UX/HCD for web portals & SaaS in regulated and safety-critical contexts throughout the entire project lifecycle.
End-to-end UX/Interaction Design: gathering requirements, information architecture, user flows, wireframes, prototypes (Axure, Figma) through to handover and implementation support.
Systematic integration of accessibility requirements according to WCAG, BITV and EN 301 549 including microcopy, keyboard operability and screen reader compatibility.
Building and scaling design systems with tokens, component libraries and guidelines in close collaboration with development teams.
Conducting UX analyses (heuristic reviews, accessibility checks), deriving prioritized actions and iteratively optimizing until approval.
Agile UX collaboration: Scrum/Lean UX processes, stakeholder workshops, defining acceptance criteria, Jira/Confluence documentation and tracking.

Jan 2002 - Jan 2007

5 years 1 month

Munich, Germany

Senior Interface Designer & Key Account Manager

designafairs GmbH

Responsible for UI/interface design: concept and creation of user interfaces, style guides, specifications and prototypes.
Key account management (e.g. Siemens Mobile/BenQ Mobile) including proposals, project setup, coordination and presentations.
Leading and coordinating interdisciplinary project teams, resource and cost planning, and ensuring time and budget goals.
Conducting client briefings, workshops and presentations, as well as close collaboration with marketing and technology.
Designing and implementing interface solutions for telecom, consumer electronics, medical technology, automotive and industry.
Contributing to agency structure development: relaunch and setup of new projects.

Jul 2001 - Dec 2001

6 months

Art Director

Microsoft GmbH / MSN

Mar 1999 - Jun 2001

2 years 4 months

Interface Designer

Freelancer

Jul 1995 - Feb 1999

3 years 8 months

Screen Designer

iSYS-Unternehmensgruppe

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Professional Services, Aerospace and Defense, Automotive, Telecommunication, and Transportation.

Information Technology

Professional Services

Aerospace and Defense

Automotive

Telecommunication

Transportation

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Product Development, Quality Assurance, Information Technology, Project Management, Sales, and Research and Development.

Product Development

Quality Assurance

Information Technology

Project Management

Sales

Research and Development

Summary

As a leading specialist in safety-critical HMI systems and medical UX, I guarantee maximum user acceptance and safety in highly regulated environments. With over 30 years of experience, I steer complex HCD processes for market leaders in medical technology, defense, and energy, setting standards in implementing strict compliance requirements (MDR, IEC 62366) and accessibility (CPACC). I transform technical complexity into intuitive user interfaces that eliminate user errors, massively boost process efficiency, and proactively meet legal requirements.

Skills

Focus Areas: Complex Hmi & Gui, Accessibility (Bitv2/Wcag), Embedded Systems, Medical Ux (Iec 62366), Saas & Enterprise Apps, Design Systems.
Methods: Usability Testing, Customer Journey, User Research, Requirements Engineering, Wireframing (Axure), High-Fidelity Prototyping (Figma).
Design & Prototyping: Figma (Expert: Auto-Layout, Variables), Axure Rp, Sketch, Adobe Cc.
Management: Jira, Confluence, Gitlab, Slack, Microsoft Teams, Microsoft 365.
Accessibility Testing: Jaws, Nvda, Wave, Siteimprove, Cca.

Languages

Bulgarian

Native

German

Advanced

English

Intermediate

Education

Sep 2024 - Jun 2025

Hochschule der Medien Stuttgart

Continuing education in accessibility: Web Accessibility Specialist (WAS & CPACC) · Stuttgart, Germany

Sep 1989 - Jun 1995

Burg Giebichenstein Kunsthochschule Halle/Saale

Diploma in Industrial & Interface Design, Dipl. Des. · Industrial & Interface Design · Halle (Saale), Germany · 1.5

Sep 1988 - Aug 1989

National Academy of Art

Industrial Design · Sofia, Bulgaria

Certifications & licenses

Accessibility in IT Procurement

DVNW Akademie GmbH

CPACC (Certified Professional In Accessibility Core Competencies)

IAAP

Fast Track To Accessibility For Designers Exam

Deque

Fast Track To Accessibility For Non-Technical Roles Exam

WAS (Web Accessibility Specialist)

HdM

Accessibility Fundamentals - Disabilities, Guidelines, And Laws

Fast Track To Accessibility For PDF Creators Exam

Deque

Fast Track To Accessibility For QA-Testers 2.0 Exam

UX-Writing Foundations The Gondola

UX Writting Kompetenzzentrum

Accessible Web Design

xdi

CPUX-M (Certified Professional For UX And HCD-Management)

Certified Scrum Product Owner® Training (2 years validity)

ICPMSB® (Certified Professional For Medical Software)

Johner Institut

FIT “Certified Usability Engineer” (Fraunhofer)

Statistics

Experience

Total positions 10

Experience in Information Technology 30.5 y

Avg length 4 y 1 m

Longest experience 17 y 4 m

Global Experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles Lead UX/HCD Consultant (Senior UX Manager – HCD & Accessibility), Senior UX-Consultant, Senior UX Designer / UX Lead

Main industries Information Technology, Professional Services, Aerospace and Defense

Main business areas Product Development, Quality Assurance, Information Technology

Qualifications

Highest degree Master

Certifications earned 14

Profile

Created

July 2026

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Frequently asked questions

Have questions? Find more information here.

Where is Zinaida based?

Zinaida is based in Sofia, Bulgaria and can operate in on-site, hybrid, and remote work models.

What languages does Zinaida speak?

Zinaida speaks the following languages: Bulgarian (Native), German (Advanced), English (Intermediate).

How many years of experience does Zinaida have?

Zinaida has at least 31 years of experience. During this time, Zinaida has worked in at least 10 different roles and for 10 different companies. The average length of individual experience is 3 years and 1 month. Note that Zinaida may not have shared all experience and actually has more experience.

What roles would Zinaida be best suited for?

Based on recent experience, Zinaida would be well-suited for roles such as: Lead UX/HCD Consultant (Senior UX Manager – HCD & Accessibility), Senior UX-Consultant, Senior UX Designer / UX Lead.

What is Zinaida's latest experience?

Zinaida's most recent position is Lead UX/HCD Consultant (Senior UX Manager – HCD & Accessibility) at Bundeswehr / BWI.

What companies has Zinaida worked for in recent years?

In recent years, Zinaida has worked for Bundeswehr / BWI and zinosign®.

Which industries is Zinaida most experienced in?

Zinaida is most experienced in industries like Information Technology, Professional Services, and Aerospace and Defense. Zinaida also has some experience in Automotive, Telecommunication, and Transportation.

Which business areas is Zinaida most experienced in?

Zinaida is most experienced in business areas like Product Development, Quality Assurance, and Information Technology. Zinaida also has some experience in Project Management, Sales, and Research and Development.

Which industries has Zinaida worked in recently?

Zinaida has recently worked in industries like Information Technology, Professional Services, and Aerospace and Defense.

Which business areas has Zinaida worked in recently?

Zinaida has recently worked in business areas like Product Development, Quality Assurance, and Information Technology.

What is Zinaida's education?

Zinaida holds a Master in Industrial & Interface Design from Burg Giebichenstein Kunsthochschule Halle/Saale.

Does Zinaida have any certificates?

Zinaida has 14 certificates. Among them, these include: Accessibility in IT Procurement, CPACC (Certified Professional In Accessibility Core Competencies), and Fast Track To Accessibility For Designers Exam.

What is the availability of Zinaida?

Zinaida is immediately available part-time for suitable projects.

What is the rate of Zinaida?

Zinaida's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.