Hi, I’m Anton Kozionov
Product designerand product owner.
Product owner and designer at cashtime, a Ukrainian car-collateral lender: I run the backlog for a product team of about six and design what they build. On the side I take my own apps from research to the store in weeks.
- 6+ years
- product owner at cashtime
- prototypes in code
- AI products & evals
- regulated fintech
- end to end
- design systems
01 — Selected work
Products I designed and the decisions behind them
cashtime
Car-collateral loan app where I'm the only product owner and designer. I designed it and run the backlog for a team of about six.
- Role
- Product owner & product designer, founding team, the only PO
- Year
- 2023–now
- Scope
- fintech · product owner
Soma
Reads lab reports on the phone and charts every marker. An on-device AI explains results but doesn't diagnose.
- Role
- Solo: product, design, regulatory line and release
- Year
- 2026
- Scope
- health · on-device AI · solo
Bukvyk
Reading app for Ukrainian kids, based on literacy research. Live on iOS and Android; 182 schools opened the free classroom version.
- Role
- Solo: product, design and research into how children learn to read
- Year
- 2026
- Scope
- edtech · solo
- Live
- bukvyk.com
Keyword Insights
Took an AI SEO tool from spreadsheets to a product: one design system for about ten features, and a new onboarding.
- Role
- Product designer, founding team (part-time)
- Year
- 2022–25
- Scope
- SaaS · AI
- Founding designer
- Open to work in 2–4 weeks
- Remote EU
02 — How I work
How I decide
Research first
I read what users complain about before I design.
RIPEN — research agents analysed 873 one- and two-star reviews to my questions; the findings ruled out two of my hypotheses before I started designing.Cut what doesn’t help
I remove things that don’t help the user, even finished ones.
Bukvyk — cut four finished games: each could be solved without listening, so none of them taught sounds.Count before deciding
I check the data before I decide what to fix.
cashtime — traced 719 applications: spouse details came up 68 times and had been broken for over a year. It got its own screen.No false data
I’d rather leave a feature out than show a wrong number.
Soma — doesn’t read handwritten lab reports and never guesses a unit the OCR lost.AI writes the code, I decide
I set the goal, keep a decision log and check what the agents report.
Soma — code computes the facts, the on-device model only phrases them: off-topic content in answers fell from 20.8 markers to 0.03.
03 — About
The short version
I’ve designed digital products since 2020, across fintech, SaaS and health tech, usually as the only designer on the team, so I also made product decisions. At cashtime I joined the founding team, and since 2023 I’ve been its only product owner and product designer, running the backlog for a team of about six.
Before product work I freelanced on Upwork for a long time, in anything I could get: graphic and motion design, 3D, WordPress, book layout, branding, promo materials. Usually I had a day job and designed at night, because neither gave me a steady income on its own.
Making an app of my own was my unclosed gestalt. I kept coming up with ideas, studios and partners, and none of it got anywhere. Now I build them with Claude Code and can’t stop: RIPEN, Soma and Bukvyk. I do the research, design and decisions. AI agents write the code, and I check what they build.
- 2026–nowFounder, designer · Own productsRIPEN, Soma, Bukvyk — built by directing AI agents; Bukvyk live on both stores, RIPEN on Google Play, Soma in TestFlight
- 2023–nowProduct owner & product designer · cashtimeFintech: the only PO, team of ~6, backlog in ClickUp; app, website, brand, AI bot
- 2022–25Product designer, founding team · Keyword InsightsSaaS: web app, landing, SEO content workflow, product videos
- 2023–24UI/UX designer · EdiensHealth tech: ordering online lab tests and diet plans
- 2023Product designer · Aviation Data SolutionsSaaS: web app for airport operations
- 2022–23Product designer · SoulaHealth tech: AI app for pregnant women and new mothers
- 2020–23Industrial designer · ARTKBIndustrial design, technical docs and 3D for hardware makers
- 2020–22Co-founder, product designer & PM · ElekompE-commerce built from scratch with 1C inventory; led dev and content teams
- 2019–20Graphic designer · KRT TVOn-air graphics, intros and programme branding
- 2025–26Product Design courseProjector Creative & Tech Online Institute · certificate
- 2020MA, Graphic Design (with honours)Kyiv State Academy of Decorative and Applied Arts and Design
- 2018BA, Industrial Design (with honours)National Transport University, Kyiv
04 — Kind words
What people I’ve worked with say
Best designer and product manager out there. Been together through numerous projects from MVP to scaling to profitability, Anton does it all. Top responsibility and communication skills.
Mykola M.CTO, Keyword Insights I worked with Anton for a long time. He covered everything on the website, from the concept and web design to development and production. The quality was always high, and his work never raised questions. He didn’t stop at the brief. He took the initiative, suggested new ideas and pushed for solutions that actually worked. He led the site’s cross-functional team, helped hire people and coordinated many contributors. Punctual, honest and open; any disagreement was settled calmly, through an open conversation.
Danylo SoloveiCEO, Elekomp
05 — Craft
Details, up close
Interfaces, logos and experiments.
