Case Study Review
Portfolio feedback from someone who interviewed 100+ product designers.
I'm Zinc, a lead product designer with 20 years of experience. I review real case studies and explain what hiring managers actually look for.
Previously at Booking.com · Now lead product designer at Atlassian · Former founder
How it works
Apply
Submit a case study and answer a few questions. You’ll be added to the waitlist.
Get picked
I prioritize portfolios where I think my feedback can make the biggest difference.
Learn what hiring managers see
I’ll record a 10-minute video review focused on product thinking, decisions, and interview signals.
Why listen to me
I'm Zinc, a lead product designer with 20+ years of experience across startups and big tech.
I've founded a design agency, built a product platform, and worked in data-driven environments at Booking.com and Atlassian where product thinking matters more than pixels.
I've conducted 100+ interviews for designers at every stage in their careers. It pains me to see people who put in the work to make good products but lack the experience to communicate this clearly in their portfolio.
I know most driven designers, with a bit of guidance, can build a a solid portfolio. And I'm here to help.
What people say
“Vlad always provides valuable constructive feedback, pays attention to details, challenges my thinking and decisions in a healthy way, gives great tech tips, and is always very generous with his time. The sessions are value-packed and challenging in a non-harmful way that leaves me feeling motivated to improve.”
dinara
UX Designer, WeDance
“He aims for better version of you. It is visible. I am happy to get challenged and solve the problems with him.”
Gamze Bozkurt
Data Driven Designer, Utrecht UAS
“He is very kind and candid in his approach. I walked away with tons of learnings from our interaction which is helping me steer my portfolio in the right direction.”
Abhimanyu Gurung
Lead Brand Designer, PhonePe
“One of the most useful sessions for me. He went an extra mile just to answer all my queries. This was a very fruitful conversation that gave valuable insights.”
Dmitri Gavrisov
Senior UX Designer, Booking.com
“He patiently listens to you and tries to understand your current situation first, then he gives you the best advice based on what you want to achieve.”
Sina Soltani
UI/UX Designer, Baims
“He is very attentive to my needs, and he clearly gave me relevant advice. He is honest and encouraging, a good balance to keep me moving forward in my career.”
Thibault Decousus
Product Manager, LCO Firm
“I got a very motivating and constructive session with real advice. He has a lot of experience to share and very particular ideas on how to improve my career path.”
Olga Kovalenko
UX Researcher, Plytix.com
“He not only reviewed my portfolio but also provided invaluable feedback that transformed my approach to design.”
Najme Hasanzade
UI/UX Designer, Freelancer
“I feel way more optimistic about the projects that I'm working on and can use the methods I learned during our session.”
Kevin Singh
UX Designer, Samsung Research America
“He not only answered my questions but did so with a wealth of real-world industry experiences, offering invaluable tips and strategies to navigate the complexities of a design career.”
Poorva Joshi
Product Designer, Klub
“With Vlad's wealth of design experience and his ability to deliver precise reviews, our conversation was both enjoyable and productive as we discussed and brainstormed ideas.”
Sourabh Arun Chopade
Product Designer 2, Helpshift
Apply for a Case Study Review.
Submit a single case study, not your full portfolio.
Need deeper feedback?
Book a Portfolio Deep Dive, a live session where we break down your case studies, improve your storytelling, and strengthen the signals hiring managers look for.
Recorded call · Actionable improvements · Career strategy
Book a Deep Dive