Senior Product Designer
Pi.Security · San Francisco, CA · Full-time · Onsite, 5 days a week
About Pi
Pi is an agentic product security platform for teams that need to secure software as fast as they build it. Security knowledge is scattered across code, tickets, incidents, pen-test reports and the people who remember why decisions were made. Pi turns that into institutional security memory: it traces vulnerabilities to their root cause, fixes them in context, and puts guardrails where engineers already work, so whole classes of issues stop coming back. We are a well-funded team founded by the people who led vulnerability mitigation at Microsoft and offensive research at Tesla.
Pi was recognized on Fast Company's 2026 Next Big Things in Tech list and covered by Forbes!
About the role
We're looking for a Senior Product Designer to take meaningful ownership of Pi's product experience at an early stage. As the design anchor in our San Francisco office, you’ll work in person with Product, Engineering, and the founding team, partnering closely with our Head of Design in Tel Aviv. You’ll own complex, technical problems from initial framing through launch—exploring the system, validating a direction, and staying close through implementation. You will also help set the bar for how a security product earns trust when AI does part of the work.
What you'll do
Own end-to-end design for core investigation, remediation, and prevention workflows, from framing the problem to shipping and measuring success..
Shape product direction with PM and engineering: frame problems, challenge requirements, and help decide what we build, not only how it looks.
Build trust in agentic workflows by making it clear what the AI did, why, and how confident it is, while keeping people in control of what ships..
Turn dense security and code context into interfaces that are fast to scan and simple to act on, for security engineers and developers alike.
Run discovery with customers (interviews, workflow shadowing, usability tests), choosing the right method for the question, and use research and product data to define what success looks like after launch.
Define and extend Pi's design system and interaction patterns with our frontend engineers (React, Next.js), and own experience quality through QA and release.
Be the design voice in the SF office: lead critiques, stay in sync with the Tel Aviv design team, and help establish strong design practices as the team grows.
What we're looking for
6+ years of product design, including 3+ years on complex B2B, developer, security or data-heavy products.
A portfolio that shows end-to-end ownership of hard workflow problems: the reasoning, the tradeoffs and the outcome, not only the final screens.
Strong interaction design skills across tables, filters, detail views, multi-step flows, permissions, states, and edge cases..
Strong visual craft and systems thinking; experience building or evolving a design system.
A track record of leading product decisions with PMs and engineers and moving through ambiguity without waiting for a spec.
Comfort with fast, lightweight research and with using product data to support decisions.
Fluency in Figma and modern prototyping workflows, with curiosity about AI-assisted or code-based design tools.
Clear written communication: part of your team is 10 hours ahead.
Desire to work onsite in San Francisco, full-time.
Nice to have
Experience designing security, developer tools, infrastructure or observability products.
Experience designing AI-assisted, explainability and human control matter.
Hands-on with HTML, CSS, or tools like Claude Code or Cursor, enough to prototype or ship UI changes.
Experience working within a design team: regular critiques, a shared design system, and close collaboration with other designers.
Success in this role looks like
In your first 90 days you own a product area, have spoken with customers, and have shipped meaningful improvements.
Within six months, you are a trusted design partner in SF, independently driving complex product work, strengthening shared design patterns, and helping the team turn technical complexity into clear, trustworthy experiences.
What we offer
Senior ownership of the product experience at a well-funded, fast-growing security startup.
Work directly with the founding team and a hands-on Head of Design.
A San Francisco office and a team that builds together, in person.
Base salary range is $145,000 to $214,000 per year. (This is our good-faith estimate of what we expect to pay at hire. Where an offer lands depends on experience, skills, and level.)
Meaningful equity in Pi.Security
Medical, dental, and vision coverage for you and your family, starting the 1st of the month after you join.
Flexible Spending Accounts (FSAs) for health and dependent care
Commuter benefits
Unlimited PTO
401(k)
Health and wellness stipend
Lunch allowance on in-office days
Equal Opportunity
Pi.Security is an equal opportunity employer. We welcome applicants of all backgrounds and are committed to building a diverse and inclusive team. Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.