Interview, Fireside Chat
From the Lab to the Trading Floor: Designing for Expert Users with Erin Murphy
- Career Trajectory: Erin Murphy transitioned from a generalist design background to specialized domains at NASA's Jet Propulsion Laboratory (JPL) and Jane Street, noting a shift from consumer products to tools designed for deep technical experts.
- JPL Context: JPL hired Murphy during an early stage of interaction design maturity; the initial project involved consolidating Earth-orbiting satellite data (specifically CO2 concentration and atmospheric composition) into a unified, accessible web portal for researchers.
- Design Methodology: Murphy utilizes "storyboards" (linear, comic-strip-style visual aids) to simulate user workflows, helping non-designer engineers and scientists visualize abstract system interactions and identify friction points in complex data pipelines.
- Jane Street Scale & Needs: The firm's growth from ~35 employees to 2,600 has necessitated a shift from informal, self-built internal tools to formalized UX processes to manage scale, reduce cross-team friction ("cross-terms"), and ensure discoverability across a diversified engineering base.
- Specific Project Outcomes:
- Conferencing Tool: A redesign of the internal video/audio conferencing workflow reduced latency and simplified room booking by integrating physical sensors (phone scanning) with software logic, shifting from a fragmented multi-step process to a single-button interaction.
- Blueprint & AppD: Current projects focus on standardizing application provisioning (Blueprint) and managing automated jobs (AppD), moving users from command-line interfaces (CLI) to web-based UIs while preserving critical keyboard-shortcut workflows.
- Expert User Constraints: Jane Street's users prioritize information density and keyboard-driven "flow states" over the whitespace and "airy" aesthetics typical of consumer software, often rejecting designs that do not maximize screen real estate for data visibility.
- Research Adaptation: Murphy has shifted from formal, scheduled user testing to "lightweight, ad-hoc" observations due to the firm's open-plan architecture and high-trust culture, which allows for immediate, context-aware feedback when engineers and designers share physical proximity.
- Hiring Strategy: Jane Street is actively recruiting UX designers with experience in non-consumer, high-complexity domains (e.g., fintech, aerospace, robotics) who can rapidly acclimate to unfamiliar technical fields and partner with domain experts to clarify ambiguous requirements.
- Design Philosophy: Murphy defines "beauty" not as aesthetic polish but as functional clarity and confidence; she argues that a design cannot be truly "beautiful" without a deep, empathetic understanding of the domain mechanics and the specific problems it solves.
- CLI vs. Web Transition Challenges: A primary design hurdle involves translating the composability and speed of Unix-style CLI tools into web environments without sacrificing the "language" of commands, with efforts focused on maintaining consistent key bindings and navigation patterns.
- Future Design Direction: The firm aims to build a reusable design system of components and behaviors that allow traders and engineers to compose custom tools, potentially bridging the gap between graphical interfaces and the "pipe-based" composability of command lines.
- Cultural Impact: The physical office layout is intentionally designed to minimize communication costs, reinforcing a culture where designers can easily observe and interview users, leading to more accurate problem definitions and reduced reliance on abstract assumptions.