I make products, and the AI inside them, sound human at scale.
Contact
✉️ [email protected]
📞 +421 911 433 170
🕴🏻 LinkedIn: Boris Slesar
🇪🇺 EU citizen
About me
For over eight years, I've helped banks, fintechs, and crypto products say hard things simply: warnings that actually warn, onboardings that don't lose people halfway. I set the voice behind them, so thousands of words sound like one calm person, whether they land on a product screen, in an in-app AI assistant, or in one of dozens of languages. That ear comes from poetry and linguistics, where I learned that the most precise language is also the most human.
Work experience
Content Designer
Alteryx, Remote, Prague, Czechia, August 2026 – Present
- Responsible for overall content design of the Intelligence and Canvas pillars.
- Collaborating daily with developers, PMs, product designers, and other content designers.
Content Designer
Solflare, Remote, Zagreb, Croatia, September 2025 – July 2026
What I did: Shaped the product voice and crafted clear, trustworthy user-facing content for the leading Solana wallet.
- Defined and maintained Solflare’s product voice and tone guidelines, and engineered the content standards into 60 structured, version-controlled entries, one source of truth read by both writers and AI tooling.
- Led conversation design for Magic AI, Solflare’s in-app AI assistant, shaping its dialogue flows, tone, and system prompts so an LLM-powered assistant stayed on-voice and auditable at scale.
- Wrote the end-to-end purchase and reveal flow for Packs, the first wallet-native collectibles feature, with copy that helped drive $2M+ in transactions and $130K in platform profit within the first 24 hours of launch.
- Owned end-to-end copy for other high-stakes flows, including Solflare Shield, turning complex security and financial actions into language users could trust.
- Rewrote the onboarding welcome and carousel plus critical wallet warnings, lifting create-wallet completion by 2.7 percentage points and cutting drop-off before users chose a path from 14.8% to 12.4%.
- Conducted regular UX copy audits across wallet surfaces, catching inconsistencies and sharpening clarity, with the fixes folded back into the content system.