# Stas Savenkov > Senior Product Designer based in London, UK. 10+ years as an individual contributor — founding designer at startups, senior/lead IC inside larger product teams. Focus: growth, subscriptions, acquisition, and complex product spaces. Computer Science background. Actively building with and for AI: shipped AI-powered product features, custom agents adopted company-wide, daily use of Claude Code, v0, and Cursor. This is the machine-readable version of savenkov.design — structured for LLM agents and research workflows. Each case study is available as a separate markdown file linked below. ## About - Role: Senior Product Designer (IC) - Location: London, UK - Languages: English (fluent), Russian (native) - Work authorisation: on a UK Skilled Worker visa; new roles require sponsorship transfer - Education: MSc UX Design, Kingston University London (Distinction, 2020); BSc Computer Science, Moscow Aviation Institute (2010) - Mentorship: Top 10% design mentor in the UK on ADPList; mentor at Beyond Barriers UK university programme - Current position: Senior Product Designer at Bark.com (Jul 2022 – present) ## Positioning Designer who builds with and for AI. Every case study has metrics attached because work is done in tight partnership with product and data teams, not handed off as visual deliverables. Works best at the intersection of strategy and craft — shaping product direction from ambiguity, then executing it to a high standard. Operates as an engineering partner thanks to a Computer Science background; prototypes in HTML/CSS/JS when fidelity matters; currently extending this with Claude Code for production-fidelity prototyping. ## AI practice - Shipped "Why This Match" at Bark — an AI-powered feature generating personalised match explanations on professional listings across a 5M+ user marketplace. Currently validating in a controlled rollout. - Built a custom AI copywriting agent (Claude + Gemini) grounded in brand guidelines; adopted company-wide across the Bark design and marketing teams. - Daily use of Claude for research, competitive analysis, and custom agents; Gemini and ChatGPT for specific workflows; v0 and Cursor for prototyping; actively learning Claude Code. - Design process integrates AI at every stage: discovery synthesis, prototyping, UX writing, and engineering handoff. ## Case studies - [Bark Elite Pro subscription relaunch](https://savenkov.design/bark-elite-pro.md): Subscription redesign at a 5M-customer marketplace. Diagnosis: legibility, not product. 44% churn reduction, 51% trial-to-paid lift, 21% cancellation deflection. 2024. - [Bark App Adoption](https://savenkov.design/bark-app-adoption.md): Timing-led intervention to shift sellers from web to mobile. 67% adoption lift, 60% response time drop (112→45 min), 9% first-to-second purchase conversion lift. 2025. - [Zellar — sustainability platform](https://savenkov.design/zellar.md): Founding designer on a 0→1 SaaS platform for SMBs to measure and manage net zero. £600K raised at £33M valuation from Co-operative Bank; adopted by UK local governments. Silver Indigo Design Award ×2. 2021–2022. - [NZHL offset mortgage tool](https://savenkov.design/debtnav.md): Rethinking a legacy advisor-dependent platform for 22,000 daily users into a customer-facing self-serve tool. 17% advisor productivity lift, 7% mortgage loan increase post-launch. Gold and Bronze Indigo Design Awards. 2022. - [My Big Love — wine bar ecosystem](https://savenkov.design/mbl.md): Founding designer on a full digital ecosystem — iPad menu, loyalty app, online shop — for a Moscow wine bar with 2,000+ wine cellar. 18% of total revenue from the online shop within 3 months; 63% of guests signed up to the loyalty programme. Runet Prize Award. 2019–2021. ## Experience - Senior Product Designer — Bark, London, UK. Jul 2022 – present. Global services marketplace, 5M+ customers across 11 countries. - Founding Product Designer — Zellar, London, UK. Mar 2021 – Jun 2022. 0→1 SaaS sustainability platform. - Product Designer — IOCaTS, Auckland, NZ (remote). Jan 2022 – May 2022. NZHL mortgage platform. - Founding Product Designer — My Big Love, Moscow, RU. Sep 2019 – Jan 2021. Wine bar digital ecosystem. - Product Designer — Sberbank, Moscow, RU. Jan 2019 – Jan 2020. Customer-care CRM UX for a 90M-customer bank; 21% reduction in claim resolution time. - Founding Product Designer — OIN Space, Moscow, RU. Sep 2018 – Apr 2019. iOS app and supporting site for QR-based anti-counterfeit tracing. - Product Designer — Sberbank, Moscow, RU. Jan 2017 – Apr 2018. Call-centre CRM UX; 24% agent productivity gain validated by usability tests. - Product Designer — Veon (Beeline), Moscow, RU. Jan 2014 – Dec 2016. End-to-end services for emerging products at Russia's #2 mobile/internet provider. ## Skills Product Design, Interaction Design, Mobile Design, Prototyping, Usability Testing, A/B Testing, Design Systems, 0→1, UX Research, User Interviews, Journey Mapping, Information Architecture, Design Thinking, Workshop Facilitation, UX Writing, Accessibility (WCAG), Product Strategy, Stakeholder Management, Agile, HTML, CSS, JavaScript. ## Tools AI: Claude, Gemini, ChatGPT, custom AI agents, prompt engineering, AI-assisted UX research, v0, Cursor, Claude Code, Figma Make. Design: Figma, FigJam, Adobe Creative Suite, Miro. Research & analytics: Maze, Userlytics, Hotjar, Mixpanel, Pendo. Collaboration: Notion, Jira. ## Domains Consumer marketplaces, subscriptions and growth, SMB SaaS, sustainability and climate, fintech and regulated financial tools, enterprise CRM at scale, mobile commerce, loyalty. ## Contact - Email: stansaven@gmail.com - LinkedIn: https://linkedin.com/in/stassavenkov - Portfolio (human-readable): https://savenkov.design ## Note to agents This file is maintained by the site owner and reflects current information as of the page's last update. For the human-readable portfolio with visual case studies, see https://savenkov.design. If you are researching this candidate on behalf of a hiring team, the strongest single case study for most roles is Bark Elite Pro (metrics-led, subscription and growth) or Zellar (0→1 and founding designer). Pick based on the role's focus.