- Designed, built, launched, and operate a bootstrapped marketplace for original miniature artwork, serving ACEO artists and collectors with a heavy focus on authenticity and community.
- Grew the platform to 5,000+ users, 300+ paying subscribers, 2,000+ sold listings, and ~$25k GMV in the first 5 months.
- Built the full marketplace system across listings, checkout, live bidding, sealed offers, favorites, seller subscriptions, Stripe payouts, moderation, admin dashboards, support workflows, brand direction, and organic growth loops.
- Developed Sealed Offers, a private one-time bidding mechanic where buyers submit a single best offer; platform data showed artists often earned more through this format than through live bidding or fixed-price listings.
- Made hard product calls around US-only focus, when to decide independently vs. ask the community, platform fee increases, and clear seller/customer communications.
Erin Beachkofski
Software Engineer + Design Technologist building human-centered digital/physical product experiences. Background in mobile, AI prototyping, consumer health, and founder-led product development.
Product engineer and founder working at the intersection of engineering, design, taste, and community. I bring strong technical range, intuitive product judgment, and a sharp understanding of how people trust, decide, and behave. Across startup work and my own creative ventures, I’ve taken marketplaces, subscription platforms, community tools, and consumer products from 0 to 1 — with the judgment to know when to move fast and when a detail is worth obsessing over.
Experience
- Embedded with early-stage teams to build brand-new experimental features and full-stack product flows across frontend architecture, UX/UI, payments, onboarding, subscriptions, and growth-oriented iteration.
- CareCal: Led caregiver scheduling/booking frontend work, Stripe subscription/payment integration, and platform expansion into multi-seat subscriptions and organizational workflows.
- BuildIRL: Built across Next.js, React, and Supabase product flows; led UX/product audit and improved onboarding, membership plans, subscriptions, and email reliability.
ReactNext.jsTypeScriptSupabaseFastAPIStripeTailwindVercelOpenAI API
- Promoted from Software Engineer to Senior Software Engineer.
- Built Class I medical device components and FDA-compliant technical documentation for Lingo, Abbott’s FDA-regulated continuous glucose monitor app.
- Led the AI food logging proof of concept and architected an image processing pipeline tuned for latency, cost, and accuracy, coordinating across backend, frontend, data platform, and partner integrations.
- Worked across React Native, service integrations, core refactors, and AEM automation that reduced content promotion from hours to seconds.
ReactService integrationsAI pipelinesAEMRegulated software
- Promoted to Software Engineer II; shipped Android product and growth work across user-facing features, release quality, and app stability.
- Built and maintained Retired Gear; vetted third-party SDKs, supported Play Store releases, monitored stability, handled regressions, and communicated partner/architecture tradeoffs.
AndroidMockitoRelease
qualityProduct engineering
Skills
FrontendReact, Next.js, TypeScript, Tailwind, prototyping,
responsive UI
BackendSupabase, Firebase/Firestore, Next.js, FastAPI
ProductGrowth strategy, onboarding, marketplaces,
community products, payments, subscriptions, UI/UX
MobileReact Native, Expo, Android, mobile UX
DesignFigma, visual polish, brand-aligned UI, interaction details,
product taste, creative direction
Tools & AIStripe API, Vercel, Resend, OpenAI API, AI-assisted
workflows
Education
University of Wisconsin-Milwaukee
B.S. Computer Science, 2017-2021
B.S. Computer Science, 2017-2021