Senior UI/UX Designer - St Louis, MO

Location: Remote (St Louis, MO)
Department: Product & Design
Employment Type: Full-Time

About Us

We’re scaling rapidly and have a growing pipeline of opportunities that demand exceptional talent across disciplines. Our mission is to bring on individuals, from creative producers to technical experts to entrepreneurial leaders, who can help us realize this next chapter of growth.

We are a company of doers. Leaders roll up their sleeves, teams work flat, and everyone contributes to what ships. Titles don’t insulate us from feedback or basics. We invite critique, learn quickly, and keep raising the bar. The best ideas win here, no matter where they come from, because clients trust us to deliver the strongest outcomes every time.

Our clients’ missions, products, and bottom lines are sacred. We immerse ourselves in their world, becoming stewards of their goals and partners in solving big problems. Every product, strategy, or asset we create must be both beautiful and functional; practical, usable, and designed for real-world impact.

Humans are our most valuable resource, and we only grow by hiring people who push us forward. Across strategy, engineering, design, data, and operations, we seek out teammates who raise the bar and make us better. Always hire up, never down.

We partner with organizations of all sizes to explore, design, and implement AI strategies that are secure, scalable, and human-centered. We believe AI should amplify human potential, not replace it and we build with that conviction in every engagement. From advisory and tooling to implementation and education, we meet clients where they are at and help them integrate AI in ways that align with their mission and values. Our goal is to empower teams to work smarter, move faster, and unlock new possibilities through thoughtful, responsible innovation.

And through it all, we lead with purpose, love, and adventure. We do meaningful work with people we care about, and we make the ride an adventure worth taking. Because at Human Agency, who we are and how we work are one and the same.

Role Overview

The Senior UI/UX Designer will lead end-to-end product and web experience design across research, strategy, interaction, and visual execution. You’ll collaborate with product, engineering, and marketing to solve complex problems, elevate usability, ship production-ready interfaces, and steward our brand and design system. This role suits a craft-obsessed designer who moves from insight to elegant, shippable UI—and communicates clearly with technical and non-technical partners.

Responsibilities

Product & Experience Design

• Own information architecture, interaction design, and UI for client websites, web apps.
• Design detailed user flows, wireframes, and high-fidelity interfaces for testing and developer handoff.
• Create, test, and refine prototypes of varying fidelity; partner with engineering to visually QA UI through implementation.

Website Design & Delivery

• Lead end-to-end website experiences (marketing and product/microsites): structure, UX, responsive UI, basic knowledge of SEO and web performance, and accessibility.

Brand & Design Language Systems

• Translate brand strategy into systematized UI: typography, color, grids, motion, and component patterns.
• Maintain and evolve our design system and documentation to ensure consistency across products and web.

Research & UX Strategy

• Plan and conduct interviews, surveys, and usability tests; synthesize insights into clear problem statements, opportunity areas, and prioritized roadmaps.
• Define success metrics and incorporate findings into iterative design cycles.
• Be able to take research, raw information, and organize it into client-facing presentations, decks, and create clear stories to walk clients through your findings with recommendations 

Cross-Functional Collaboration

• Work with product, engineering, and client-facing teams to define objectives, user journeys, and visual specs; communicate design vision and product strategy across the organization.
• Take ownership of systems; champion accessible, performant, and customer-obsessed design.

Experience & Qualifications

• 5+ years of experience combining solid visual (UI) and experience (UX) design skills.
  
• Online portfolio showing experience designing consumer-facing experiences for web and mobile.
• Expert-level proficiency with the Figma suite (Design, FigJam, Slides, Make), modern prototyping tools and Adobe Creative Cloud.
• Experience creating, managing and evolving design‑systems
• Proven ability in UX thinking and research; committed to solving real user problems and delivering intuitive, accessible experiences.
• Strong knowledge of user-centric design principles along with web and mobile design standards and best practices.
• Have basic familiarity with Webflow and web languages (HTML, CSS, JavaScript), as well as an understanding of modern front-end frameworks (e.g., React, Tailwind) in order to collaborate with engineers on integration and release.
• Experience working in agile, cross‑functional teams
• Strong communication and collaboration skills in English.
• Bonus: startup experience; knowledge of SEO basics, web optimization and accessibility standards; curious/knowledgeable about GenAI and how to incorporate it into your design workflows.experience mentoring other designers or establishing team processes.

Compensation

This role offers competitive pay with performance-based bonuses. Final compensation will vary based on experience, performance, and location.

Why Join Human Agency

At Human Agency, we’re building something different — a team of thinkers, builders, and change-makers who believe in the power of purpose-driven work. You’ll have the autonomy to lead, the resources to succeed, and the chance to grow alongside a company creating meaningful impact for people and organizations across sectors.

Equal Opportunity Commitment

Human Agency is proud to be an Equal Opportunity Employer. We value diverse backgrounds, perspectives, and experiences and strive to build an inclusive culture where everyone feels welcomed and empowered.

Independent design and product agency.