As Founding Design Engineer, you will sit at the intersection of design, product, and engineering. You will take part in building Arcline’s agentic legal platform, which automates 80% of legal work and manages communication between lawyers and clients.
This is a high-impact role for someone energized by shaping product experience from zero to one, sweating visual details, and turning complex workflows into elegant, intuitive interfaces. You will work in a team of highly talented designers, software engineers and AI engineers, reporting directly to the CTO.
Arcline is building the next generation of legal services.
We are an AI-native legal platform serving startups across the US and Europe. Our mission is simple: make legal work fast, transparent, and accessible without compromising on quality. Today, legal is often slow, expensive, and unpredictable. We’re fixing that.
At Arcline, AI handles up to 80% of the work: intake, research and drafting. Our network of elite lawyers can focus on the final 20% that requires real judgment. This allows us to deliver high-quality legal work with same-day turnaround and upfront, fixed pricing - something traditional firms can’t offer.
Arcline was founded by Stefan and Pamir. Pamir is an Oxford-trained lawyer specialised in technology law. He has experience from multiple leading technology companies including OpenAI. Stefan is an expert in AI/ML for regulated industries. Stefan has built and scaled ML-powered products to millions of users.
- Design and build polished, intuitive interfaces for Arcline’s AI-powered product
- Translate complex workflows into clear, user-friendly interaction patterns
- Create high-fidelity UI designs and rapidly bring them to life in code
- Define information architecture, navigation, and end-to-end user journeys
- Build out new features from zero to one
- Improve and iterate on existing functionality based on user feedback
- Develop and maintain Arcline’s design system and component library
- Optimize performance, accessibility, and UI reliability
- Adopt and master the latest AI tools to improve development efficiency
- Work closely with founders to shape product direction and UX strategy
- Participate in customer discovery to understand user pain points
- Prototype new ideas quickly and iterate based on feedback
- Collaborate with AI engineers to deliver cohesive experiences
- 3–7 years of experience in product design, frontend engineering, or design engineering
- Strong UI/UX design skills with a portfolio of product work
- Proficiency in modern frontend technologies (we use Next.js and Typescript)
- Ability to move seamlessly between design tools and production code
- Deep attention to visual detail — spacing, typography, hierarchy, and motion
- Strong product intuition — you understand what makes interfaces feel simple and fast
- Experience designing complex workflows, dashboards, or productivity tools
- Excellent communication skills — you can explain design decisions clearly
- Experience with Figma or similar design tools
- Experience as a designer or engineer at an early-stage startup
- Familiarity with AI-native UI patterns (streaming, inline editing, copilots, etc.)
- Accessibility and performance optimization experience
- Background from legaltech, productivity tools, or B2B SaaS
- Direct access to both founders from day one — shape the product experience from scratch
- Define the design culture of an AI-native company
- High degree of trust and autonomy
- Hot market: we’re building the defining AI-native firm in a $1T+ industry
- Accelerated growth path: evolve into Head of Design or Product leadership
- Backed by Y Combinator — access to the best network in startups for hiring and partnerships
Apply using YC’s job portal. We review every application and respond only to relevant applicants within 1–2 week(s).