UI/UX Designer (End-to-End)

Role: UI/UX Designer (End-to-End)

Experience: 3 to 5 years

Purpose

Own the design lifecycle for client projects, from the first conversation with the client to handoff-ready UI. This person is the client-facing voice of design and should be able to run a project’s design track with minimal supervision.

What they own

• Client communication: Run discovery calls, design reviews and feedback rounds directly with clients, and manage expectations on scope and timelines.
• Requirement discovery: Ask the right questions, uncover the real problem behind the stated request, and document assumptions, constraints and open items.
• User stories and flows: Turn requirements into user stories with acceptance criteria, plus user journeys and task flows that engineering can build from.
• Wireframes and prototypes: Produce low and high fidelity wireframes and clickable prototypes, and validate them with clients and, where possible, real users.
• UI design: Deliver polished visual design with a consistent design system or component library, covering responsive web and mobile.
• Developer handoff: Prepare specs, assets and states, and stay involved through build to review implementation against the design.

What we expect

• Strong written and verbal communication, comfortable leading a client conversation.
• A portfolio showing the full lifecycle, not just visual polish: research or discovery, flows, wireframes, final UI.
• Fluency in Figma (components, auto layout, prototyping) and familiarity with design systems.
• Working knowledge of usability and accessibility basics.
• Ability to use AI tools to speed up research synthesis, story writing and design exploration while keeping their own judgment on the output.

Nice to have

• Experience with B2B/B2C products, dashboards, enterprise workflows.
• Basic understanding of front-end constraints (HTML/CSS, Flutter or React component thinking).

Success looks like

Clients trust them as the design point of contact, requirements are clear before development starts, and engineers rarely have to ask what a screen is supposed to do.

What the role offers

Competitive salary based on experience, real authority over how the agent layer is architected, influence over company-wide AI engineering standards, and features that go from idea to user-facing in weeks.

How to apply

Please send a resume to careers@synterrait.com along with anything built: repos, demos, evals, write-ups. Applications should briefly describe one agent system shipped to production: how it was structured, how success was measured, and what it cost to run. One system explained deeply is weighted far more heavily than a long list of tools.