UI/UX Designer for B2B security software

We are IT security specialists: our products encrypt business communications. More than 25% of the 100 highest-revenue companies in Germany, as well as hundreds of medium-sized enterprises across all industries, already use our Z1 encryption solutions. We have big plans and continue to grow steadily. Nearly 140 employees are already working with us in Neukölln. Join our professional, highly qualified team: take on challenges, share your knowledge, learn new things, and discover your potential!

What you'll do

As a UI/UX Designer, you shape a compelling user experience across our Z1 product landscape for secure and compliant B2B communication - helping make technically complex systems intuitive, consistent, and accessible.

Working closely with Product Management and Engineering, you translate functional and technical requirements into clear user journeys, workflows, and high-quality interface designs.

Design intuitive interfaces for:

• technically complex B2B administration UIs
• communication solutions for end users (B2B & B2C)
• the Zertificon customer and partner portal
• You take on UI and UX design for new Z1 products - from first wireframes to high-fidelity mockups and interactive prototypes
• Collaborate closely with Product Owners and Product Managers to shape information architecture and end-to-end user flows
• Identify usability gaps and continuously improve the user experience in Z1 products
• Ensure consistent interaction patterns, accessibility, responsiveness, and high design quality across all products
• Build and evolve our design framework with reusable components and guidelines
• Provide design reviews and guidance when legacy interfaces require UX improvements

Experience designing complex B2B software products

• Skilled in designing both administrative interfaces and end-user-facing web applications
• Strong proficiency in Figma (including Figma Make) and modern prototyping workflows
• Ability to translate complex technical requirements into clear, usable, and implementable design solutions
• Solid understanding of responsive design principles and accessibility standards
• Strong collaboration skills with Product Management and Development teams
• English skills at least C1

Nice to have

• Basic understanding of HTML, CSS, and JavaScript for effective collaboration with developers
• Familiarity with modern frontend frameworks such as Tailwind Plus and Vue.js
• German language skills

Flexible working hours and home office possible

• **Mobility: **free Germany ticket, job bike leasing or car parking
• **Allowances **for food (e.g. Lieferando) and internet in the home office
• **Benefits in the office: **Roof terraces & green courtyard, organic fruit and drinks, parcel acceptance
• **Get-together: **pizza Friday in the office, regular team events, big summer party

Why Zertificon?

Zertificon ist ein führender Software-Hersteller im Bereich IT-Sicherheit mit Sitz in Berlin. Seit 1998 sichert Zertificon elektronische Geschäftskommunikation von Unternehmen aller Größen und Branchen mit E-Mail-Verschlüsselung und digitalen Signaturen.

Zertificons Produktportfolio befindet sich in ständigem Wachstum und umfasst Lösungen zur sicheren Übertragung von E-Mails und Dateien inklusive des zugehörigen Schlüssel-, Zertifikats- und Passwortmanagements.

Z1 SecureMail Gateway als hoch effiziente Serverlösung für E-Mail-Verschlüsselung und -Signatur erfüllt durch optionale Erweiterungen alle vorstellbaren Anforderungen der sicheren B-to-B und B-to-C Kommunikation. Das Gateway bietet neben der PKI-basierten Verschlüsselung (S/MIME & OpenPGP) auch reine Passwortverschlüsselung für Empfänger ohne PKI.

Z1 SecureMail End2End bietet den State-of-the-Art der Ende-zu-Ende-Verschlüsselung und ermöglicht in Kombination mit Z1 SecureMail Gateway eine flexible alltagstaugliche Unternehmenslösung mit Zugriff für Antivirus, Antispam, Data Loss Prevention etc.

Z1 CertServer ist eine hochautomatisierte Zertifikatsmanagement- und Validierungslösung, die Nutzern und Anwendungen als zentrale Anlaufstelle für die Suche, Prüfung und Veröffentlichung von Zertifikaten dient.

Z1 SecureHub ist die Lösung für die sichere und sofortige Übertragung großer Dateien.

Zertificons Kunden umfassen namhafte Organisationen und Unternehmen u.a. aus den Bereichen Finanzen, Automotive, Industrie, Gesundheit, öffentlicher Sektor sowie Rechtsanwälte, Steuerberater und viele mehr.