What is a UX/UI Designer at Tessian?

As a UX/UI Designer at Tessian, you are at the forefront of human-centric cybersecurity. Tessian builds intelligent cloud email security platforms that protect organizations from threats like phishing, accidental data loss, and ransomware. Your role is to take highly complex, data-heavy security workflows and transform them into intuitive, frictionless experiences for both end-users and IT administrators.

The impact of this position is immense. You are not just designing interfaces; you are shaping how employees interact with security protocols daily. A successful design at Tessian means a user is protected without feeling interrupted, and a security administrator can instantly understand their organization's risk posture through clear, actionable dashboards. You will work closely with product managers and engineers to balance robust technical requirements with elegant user experiences.

Candidates can expect a fast-paced, highly collaborative environment where design is treated as a critical business pillar. You will tackle ambiguous problem spaces, requiring a strategic mindset and a deep empathy for users who need security to be invisible yet effective.

Common Interview Questions

The questions below represent the core themes you will encounter during your Tessian interviews. While the exact phrasing will vary, preparing for these patterns will ensure you are ready to articulate your experience confidently.

Portfolio & Past Work

These questions test your ability to reflect on your past projects, explain your methodology, and demonstrate the business value of your designs.

• Walk me through a project in your portfolio that you are most proud of. What was your specific role?
• Can you show us a project that failed or didn't go as planned? What did you learn?
• How did you measure the success of the design in this case study?
• Explain the evolution of this screen from wireframe to final UI. What feedback prompted the changes?
• How did you ensure accessibility standards were met in this project?

Design Process & Problem Solving

Interviewers use these questions to uncover how you think, how you handle ambiguity, and how you approach the take-home exercise.

• Describe your typical design process when starting a completely new feature.
• How do you know when a design is "done" and ready for handoff?
• Tell me about a time you had to design a solution with highly ambiguous or incomplete requirements.
• How do you balance user needs with strict technical or business constraints?
• What is your approach to conducting user research when you have limited time and resources?

Collaboration & Behavioral

These questions evaluate your cultural fit, your stakeholder management skills, and your ability to thrive in a cross-functional team.

• Tell me about a time you had to persuade an engineer or PM to adopt your design approach.
• How do you prefer to hand off designs to engineering?
• Describe a time you received harsh criticism on your work. How did you react and adapt?
• How do you keep cross-functional team members involved throughout your design process?
• Why are you interested in designing for the cybersecurity space at Tessian?

Getting Ready for Your Interviews

Thorough preparation requires understanding exactly what the hiring team values. At Tessian, the interview process is highly organized and heavily indexed on practical application, storytelling, and cross-functional collaboration.

Design Craft & Execution – You must demonstrate a high bar for visual design and interaction design. Interviewers will look at how you structure information, your attention to typography and spacing, and your ability to build scalable design systems within complex B2B or SaaS environments.

Problem-Solving & User-Centricity – Tessian evaluates how you navigate ambiguity. You can demonstrate strength here by clearly explaining your research methods, how you validate assumptions, and how you pivot when user data contradicts your initial hypotheses.

Cross-Functional Collaboration – Security products require tight alignment across disciplines. Interviewers will assess how you communicate your design rationale to non-designers, how you handle pushback from engineering, and how you partner with product management to define scope.

Culture Fit & Adaptability – The team looks for humility, a growth mindset, and a proactive approach to feedback. You will be evaluated on your ability to thrive in a structured yet evolving environment, demonstrating that you can take ownership of your work while lifting the team around you.

Interview Process Overview

The interview process for a UX/UI Designer at Tessian typically takes about a month from start to finish. Candidates consistently report a highly organized, transparent, and positive experience. The progression is designed to evaluate not just your final design outputs, but the journey you take to get there and how you interact with the broader team.

You will begin with an initial screening call with an in-house recruiter, followed by a deeper conversational interview with the hiring manager to align on your background and the role's expectations. The core of the evaluation then shifts to a rigorous portfolio presentation where you will walk through one or two select projects with a couple of team members. If successful, you will be given a take-home design exercise to complete, culminating in a final round of interviews that includes a presentation of your exercise and behavioral chats with other disciplines on the team, such as engineering and product management.

This visual timeline outlines the distinct stages of your interview journey, from initial screening through the final cross-functional loops. Use this to pace your preparation, ensuring you have your portfolio narrative locked in early, while saving energy for the deep-dive take-home exercise and final stakeholder presentations.

Deep Dive into Evaluation Areas

To succeed, you must understand the specific competencies Tessian targets during each phase of the interview loop.

Portfolio & Case Study Walkthrough

Your portfolio presentation is arguably the most critical live stage. Interviewers do not want a superficial tour of your website; they want a deep, narrative-driven walkthrough of one or two highly relevant projects. They are looking for your ability to articulate the "why" behind your design decisions.

Be ready to go over:

• Problem Definition – How you identified the core user problem and aligned it with business goals.
• Iteration and Trade-offs – The variations you explored, why certain paths were discarded, and how technical constraints shaped the final outcome.
• Impact and Metrics – How you measured the success of the design post-launch using qualitative and quantitative data.
• Advanced concepts (less common) – Integrating machine learning insights into UI, designing for edge cases in data-heavy enterprise dashboards.

Example questions or scenarios:

• "Walk us through a time you had to compromise on a design due to engineering constraints. How did you handle it?"
• "Explain the rationale behind this specific user flow. What alternative flows did you consider?"
• "How did you validate that this design actually solved the underlying user problem?"

Practical Design Application (Take-Home Exercise)

Tessian utilizes a take-home design exercise to see how you tackle a problem relevant to their domain. This allows the team to evaluate your raw design skills, your strategic thinking, and your ability to produce high-fidelity deliverables under a deadline.

Be ready to go over:

• Information Architecture – How you organize complex data so it is easily digestible.
• UX Flows & Wireframing – Your ability to map out logical, frictionless steps for a specific user task.
• UI Polish & System Thinking – The visual quality of your final screens and how consistently you apply design patterns.
• Advanced concepts (less common) – Creating micro-interactions that enhance usability without distracting the user.

Example questions or scenarios:

• "Present your solution to the take-home prompt. Walk us through your initial assumptions."
• "If you had two more weeks to work on this exercise, what would you add or change?"
• "How would this design scale if we added three new data parameters to this dashboard?"

Cross-Functional Communication & Behavioral

Because you will be designing tools that require deep technical integration, Tessian includes cross-discipline interviews. You will speak with engineers, product managers, and potentially customer success representatives.

Be ready to go over:

• Stakeholder Management – How you gather requirements and manage conflicting priorities.
• Feedback Integration – Your defensiveness (or lack thereof) when your work is critiqued by non-designers.
• Advocacy – How you champion the user's needs when the business pushes for faster, less refined delivery.
• Advanced concepts (less common) – Facilitating design thinking workshops with remote, cross-functional teams.

Example questions or scenarios:

• "Tell me about a time you strongly disagreed with a Product Manager about a feature's direction. How was it resolved?"
• "How do you ensure your designs are technically feasible before handing them off to engineering?"
• "Describe a situation where user feedback completely changed your project roadmap."

Key Responsibilities

As a UX/UI Designer at Tessian, your day-to-day work balances high-level strategic thinking with detailed execution. You are responsible for leading the end-to-end design process for key features within the Tessian platform. This means you will spend time conducting user research with security analysts, sketching out wireframes, and ultimately delivering pixel-perfect, high-fidelity prototypes in Figma.

Collaboration is a massive part of your daily routine. You will participate in agile ceremonies, partner closely with Product Managers to define feature requirements, and work side-by-side with frontend engineers to ensure your designs are implemented accurately. You will also contribute to and help maintain the internal design system, ensuring consistency across all user touchpoints.

Beyond execution, you are expected to be a vocal advocate for the user. You will regularly present your concepts to internal stakeholders, synthesize feedback, and use data-driven insights to iterate on live products. Your work directly ensures that complex security configurations feel approachable and manageable.

Role Requirements & Qualifications

To be competitive for this role, you must bring a blend of strong visual design skills, systems thinking, and emotional intelligence. Tessian looks for designers who can handle the complexity of enterprise software without sacrificing aesthetics.

• Must-have skills – Expert proficiency in Figma and modern prototyping tools. Strong foundation in user-centered design principles, information architecture, and interaction design. Ability to craft clear, compelling narratives around your work.
• Must-have experience – A robust portfolio showcasing end-to-end product design. Experience working in agile environments alongside engineering and product teams.
• Nice-to-have skills – Experience with B2B SaaS, cybersecurity products, or designing data-heavy dashboards. Familiarity with basic frontend constraints (HTML/CSS/React) to better communicate with developers.
• Soft skills – Exceptional communication, a high degree of empathy, the ability to give and receive constructive critique, and a proactive attitude toward problem-solving.

Frequently Asked Questions

Q: How long does the entire interview process take? The process typically takes about a month from the initial recruiter screen to the final decision. The timeline can vary slightly depending on your availability to complete the take-home design exercise.

Q: What makes a portfolio presentation successful at Tessian? Focus on depth over breadth. Successfully presenting one or two projects in granular detail—highlighting the problem, your iterative process, cross-functional collaboration, and the final impact—is far more effective than briefly showing five different projects.

Q: Will there be a whiteboard design challenge? Based on recent candidate experiences, Tessian leans toward a take-home design exercise followed by a presentation, rather than an on-the-spot whiteboard challenge. This allows you to showcase your high-fidelity UI skills and deeper UX thinking.

Q: What is the culture like within the design team? Candidates consistently note that the team is highly organized, collaborative, and deeply invested in user experience. There is a strong emphasis on cross-discipline communication, meaning you will work as closely with engineers and PMs as you do with other designers.

Q: How much time should I spend on the take-home exercise? While the prompt will give you specific guidelines, it is generally recommended to strictly timebox yourself to the suggested hours (usually 4–8 hours). Focus on strong UX fundamentals and a polished core flow rather than trying to build out every edge case.

Other General Tips

• Focus on the "Why": Throughout every interview, never just show what you designed. Always explain why you designed it that way. Articulate the user research, business goals, or technical constraints that drove your decisions.
• Prepare for Cross-Discipline Scrutiny: Remember that you will be speaking with engineers and product managers. Tailor your language when speaking to them; focus on feasibility, scoping, and business impact rather than just visual aesthetics.

• Treat the Take-Home as a Real Project: When presenting your take-home exercise, treat the interviewers as your actual product team. Outline your assumptions, explain what you would research if you had more time, and invite their critique.
• Showcase System Thinking: Because Tessian builds complex enterprise tools, show that you understand how a single UI component impacts the broader ecosystem. Highlight your experience with design systems whenever possible.

Summary & Next Steps

Securing a UX/UI Designer role at Tessian is an opportunity to tackle incredibly engaging design challenges in the cybersecurity space. The company values designers who can translate complex, data-heavy problems into seamless, intuitive experiences. By mastering your portfolio narrative, demonstrating practical excellence in the take-home exercise, and showcasing your ability to partner with cross-functional teams, you will position yourself as a standout candidate.

Focus your preparation on clearly articulating your design process and the rationale behind your decisions. Practice speaking about your work to both design peers and non-design stakeholders. The interview process is rigorous, but it is also highly organized and designed to let your best work shine.

The compensation data above provides a baseline for what you might expect regarding salary and equity for design roles at this level. Use this information to anchor your expectations and inform your negotiations once you reach the offer stage, keeping in mind that final numbers will vary based on your specific experience and location.

Remember that thorough, targeted preparation makes a definitive difference. For more insights, peer experiences, and targeted practice materials, continue exploring resources on Dataford. You have the skills to excel in this process—now it is time to build your narrative and show the Tessian team exactly what you bring to the table. Good luck!