Senior Product Designer

Cinder; New York (NY); On-site; USD 190,000 - 220,000; Full time

Benefits offered by this job

Health benefits

Vision benefits

Dental benefits

401(k) with employer matching

Commuter benefits

Fully stocked office with paid lunch &

Job summary

Cinder, a NYC-based company, is seeking a senior designer to own end-to-end design across fast-growing product surfaces. You will work closely with product and engineering, run discovery with Trust & Safety users, prototype flows, and contribute to our design system as the product scales.

This is a hands-on role in a small, motivated team that values craft and impact. You will prototype in code, design multi-product platforms for expert users, and help shape brand, GTM, and marketing materials

Qualifications

• 6+ years designing software at senior to staff level.
• Expert in Figma: wireframing, flows, prototyping.
• Fluent with AI coding agents (Cursor, Claude, Codex).
• Front-end prototyping in code; production-grade delivery.
• Experience building or maintaining a design system.

Responsibilities

• Own end-to-end design for assigned surfaces with product and engineering.
• Run discovery with Trust & Safety customers and translate findings into design directions.
• Prototype high-fidelity flows; align engineering before build starts.
• Contribute to and maintain design system as product scales.
• Take on design work beyond core product (brand, GTM, marketing).
• Sit in critique with design lead and uphold craft standards.

Skills

Figma expert

Design systems

SaaS UX

Frontend prototyping

Customer research

Trust & Safety empathy

Ambiguity tolerance

Proactive

Multi-product platforms

AI experience

Motion design

CMS familiarity

Tools

Cursor

Claude

Codex

Job description

About Cinder

Cinder is the mission-critical infrastructure that keeps the world's most important digital platforms true to what they stand for. The internet has always been abused by bad actors, and AI is making it exponentially worse, driving fraud, abuse, and manipulation at a scale and speed no human team can fight alone. Cinder gives platforms one command center to fight back: to write and enforce policy, deploy AI agents against abuse in real time, investigate threats, file NCMEC reports, and prove their safety programs are working.

About Cinder

Cinder is the mission-critical infrastructure that keeps the world's most important digital platforms true to what they stand for. The internet has always been abused by bad actors, and AI is making it exponentially worse, driving fraud, abuse, and manipulation at a scale and speed no human team can fight alone. Cinder gives platforms one command center to fight back: to write and enforce policy, deploy AI agents against abuse in real time, investigate threats, file NCMEC reports, and prove their safety programs are working.
Our customers are some of the largest internet platforms in the world.
The decisions made in our software directly determine what stays up, what comes down, and how users are treated.
We're a small, fast-moving team backed by Accel and Y Combinator. We care about being intentional, direct, and deeply focused on solving real customer problems.

Why this role

Cinder's product surface is expanding fast: new agent-facing workflows, multiple product lines, and a growing brand and GTM footprint. We're building out design to match, and we're looking for a second senior designer to own significant surfaces end to end.

What you'll work on

• Own end-to-end design for assigned surfaces, from framing the problem to shipped UI, working directly with product and engineering.
• Run discovery with product: talk to Trust & Safety customers and users, and turn what you hear into design direction and Linear tickets an engineer can pick up and build from.
• Prototype at high fidelity to pressure-test flows and align engineering before build starts.
• Contribute to and help maintain our design system as the product scales.
• Take on design work beyond core product when it counts. This could include brand, GTM, decks, website, and marketing. We're a small design team, so we're looking for real appetite to proactively own broader design projects, not just tolerate them.
• Sit in critique with our design lead. Give and take direct feedback, and help hold the bar on craft.

What we're looking for

• Strong visual and graphic design craft: the eye to judge quality, and the ability to produce clean work without leaning on AI tools.
• 6+ years designing software at senior to staff level, with real depth on technical products built for expert users.
• Expert in Figma: wireframing, flows, prototyping, and production-grade delivery.
• Fluent with AI coding agents (Cursor, Claude, Codex) for designing and prototyping, not just experimenting with them.
• A high tolerance for ambiguity. You can create your own clarity and make calls without a finished PRD or research.
• Proactive by default. You flag and fix design debt before anyone asks you to.
• Comfortable talking to customers directly and turning what you hear into product opportunities.
• Strong systems thinker. You see how changes in one part of the product affect the rest
• Experience building or maintaining a design system, including component libraries or patterns.
• Front-end fluency: comfort prototyping in code and picking up interim engineer-designer work.
• Experience designing SaaS, especially multi-product platforms and information-dense interfaces.
• Empathy for the trust & safety problem space.

Nice to have

• Experience designing for AI or agentic products.
• Motion design skills or a sense for delightful detail.
• Comfort with website CMS builders for brand and marketing support.
• Appetite to help build design team culture and rituals from scratch: crits, standups, lunch-and-learns.
• A design background or lineage different from what's already on the team. We're intentional about building that kind of range.

Location & Benefits

We're based in NYC and would relocate the right person for this role. We believe in working together in person and hold at least two all-company events per year. We offer health, vision & dental benefits, a 401(k) plan with employer matching, fully paid commuter benefits, and a fully stocked office with paid lunch and dinner.
Compensation Range: $190K - $220K