# Sarah Park > Sarah Park is a 0 → 1 designer who thrives in mess, wrangles complex problems, and ships simple solutions. Her portfolio covers product strategy, UX and UI design, frontend development, and human-agent interaction. This guide summarizes the current portfolio at https://sarahpark.ai and links to its work, writing, and contact options. Last refreshed: September 14, 2026. Project pages are the source for detailed context, design decisions, recordings, and interactive examples. Prototypes demonstrate design ideas; they should not be treated as measured production outcomes. ## Start here - [Homepage](https://sarahpark.ai/): Works, Random, Musings, Values, and booking. - [Homepage in Markdown](https://sarahpark.ai/homepage.md): Text version of the homepage, also available by requesting the homepage with Accept: text/markdown. ## QA Wolf — November 2022–present Sarah's title is Staff Product Designer → Interim Head of Design. She reports directly to the CEO and is the only full-time product designer. She works with the CEO, engineering managers, and Director of AI on product strategy and UX direction. QA Wolf writes, runs, and maintains end-to-end tests for software teams. - [QA Wolf overview](https://sarahpark.ai/qawolf): Role, process, tools, and selected works. Sarah uses recordings, prototypes, and detailed specifications to communicate proposed experiences and iterate with engineers. - [Your product's source-of-truth](https://sarahpark.ai/qawolf/source-of-truth): A living product map that connects user flows to test coverage. Sarah worked with the CEO and Director of AI on exploration and mapping so product owners could understand what is tested and where coverage is missing. - [Creating and debugging tests](https://sarahpark.ai/qawolf/creating-and-debugging-tests): A workspace for creating, running, and debugging end-to-end tests, with code, browser output, run history, and test details together. Sarah steered the team toward automating tests and improving coverage rather than recreating standard IDE features. - [Agentic investigations](https://sarahpark.ai/qawolf/agentic-investigation): How people review an agent's diagnosis of a failed test. Research with QA engineers informed a proposal that prioritizes diagnoses and next actions, supports confirmation and dispute, and places code changes beside re-run evidence for review. - [Human-agent interactions](https://sarahpark.ai/qawolf/human-agent-interactions): Let people demonstrate a flow by taking over the browser, answer focused questions when their intent changes what should be tested, and manage persistent conversations across multiple flows. - [Deployments & triggers](https://sarahpark.ai/qawolf/deployments-and-triggers): Connect deployment activity with trigger rules to explain whether testing happened. Separate deployment failures from test failures, and preview when automation will run and what it will test before enabling it. - [Lifecycle of a bug](https://sarahpark.ai/qawolf/lifecycle-of-a-bug): An additional case study about communicating why bug reports open or close, with evidence from test runs across environments. ## Pulley — January 2021–October 2022 Sarah was Design Lead, the ninth hire, and lead product designer. The work balanced the flexibility founders value in spreadsheets with guardrails for managing cap tables and equity. - [Pulley overview](https://sarahpark.ai/pulley): UX and UI design, operations, and product strategy for founders and employees. - [Hire & fundraise without a lawyer](https://sarahpark.ai/pulley/hire-fundraise): Connect hiring and fundraising workflows into a guided but flexible experience, including agreements and board approvals. - [From offer to cap table in 1-click](https://sarahpark.ai/pulley/offer-to-cap-table): Connect offer acceptance, stock option signatures, and cap table updates to reduce fragmented workflows, manual entry, and errors. - [Help new founders onboard](https://sarahpark.ai/pulley/help-new-founders-onboard): Adapt onboarding for first-time founders who need equity guidance, alongside experienced founders who already understand cap tables. ## Magic — July 2018–December 2020 Sarah was Design Lead, first employee, and founding designer. Her work included UX and UI design, frontend development, metrics, QA, and product management. - [Magic overview](https://sarahpark.ai/magic): Developer tools for passwordless authentication. Sarah owned experiences across the website, developer dashboard, and emails, and proposed renaming Fortmatic to Magic. - [Fortmatic: a familiar way to log in](https://sarahpark.ai/magic/fortmatic): Help Ethereum app developers offer familiar email or phone signup instead of requiring users to install a wallet extension and learn crypto terminology. - [Pivot into passwordless login](https://sarahpark.ai/magic/passwordless): Reposition easy-to-integrate authentication to serve web2 as well as web3 companies. Sarah proposed the Magic name and worked on the product and relaunch. ## Other work - [Docker](https://sarahpark.ai/docker) — July 2015–January 2018, UX Designer → Design Lead, Enterprise. Sarah was the sole product designer for Docker Trusted Registry and worked both within a design team and as the sole designer on Docker Universal Control Plane. Her work included UX flows, wireframes, prototypes, product decisions with engineers, and manual QA that helped make the case for delaying a release to address regressions. - [Roofstock](https://sarahpark.ai/roofstock) — January–July 2018, Senior Product Designer. A Roofstock customer before joining, Sarah worked on Buy, Sell, and Own experiences, redesigned property reports, and tested information architecture proposals before implementation. - [Plastiq](https://sarahpark.ai/plastiq) — March 2014–July 2015, UX Engineer and second frontend hire. Sarah helped build the payment web app with HTML, Sass, and AngularJS and co-hosted a weekly product and UX knowledge-sharing session. - [Google Analytics](https://sarahpark.ai/google) — May–August 2013, BOLD Intern in information architecture. Research, personas, competitor analysis, sitemaps, and wireframes informed a website redesign that reduced the number of pages by 50%. ## Random - [Random projects and interests](https://sarahpark.ai/#random): Sketching, time outside with Petal, and experiments with autonomous agents and niche data sites. The homepage reports 413K search impressions and 3.8K search clicks across four sites over a three-month period. - [Marked.ink](https://www.marked.ink/): Curating a dataset of real tattoos for inspiration and artist discovery. - [JustPlants](https://www.justplants.design/): Botanical illustrations and doodles. ## Musings - [Agency is a muscle](https://sarahpark.ai/opinions/agency-is-a-muscle): Practice agency through action, experimentation, and momentum rather than letting perfection halt progress. - [Mother Nature is the best system designer](https://sarahpark.ai/opinions/mother-nature-is-the-best-system-designer): Natural systems connect outputs to inputs, illustrated by forest regeneration and the relationships between coral, algae, and reef habitats. - [Born with the best creation tools](https://sarahpark.ai/opinions/born-with-the-best-creation-tools): Voice, gestures, and body language as tools for thinking and communicating ideas. - [Riding energy spikes](https://sarahpark.ai/opinions/riding-energy-spikes): Leave space after a productive meeting to act on its momentum. ## Values - [Values](https://sarahpark.ai/#values): Practice conscious empathy; over communicate; assume good intent; be an owner. Sarah emphasizes awareness of biases, sharing context and reasoning, productive conversations, and taking responsibility for work that needs doing. ## Contact - [Book a 30-minute meeting](https://cal.com/sarahpark/30min): Google Meet or phone call options. Also available through the homepage's inline calendar and header calendar icon. - [LinkedIn](https://linkedin.com/in/sarahpark-ux) - [GitHub](https://github.com/sarahpark) - [Email Sarah](mailto:sarahpark.ux@gmail.com) ## Machine-readable resources - [OpenAPI description](https://sarahpark.ai/openapi.json): The site's declared API surface. - [Sitemap](https://sarahpark.ai/sitemap.xml): Published route index.