Senior User Interface Engineer

The Mice Groups, Inc.; Pittsburgh (Allegheny County); Hybrid; USD 83,000 - 90,000; Full time

Job summary

The Mice Groups, Inc. is seeking a Senior UI Engineer in Pittsburgh, with remote options in EST. You will design and build AI workflows, subagents, and reusable skills to scale our frontend.

You will drive EmberJS architecture, enforce robust testing, and create automated UI skills reading from Figma Dev Mode tokens to generate production-ready Ember components. Ideal candidates have 6+ years frontend experience with EmberJS, strong AI engineering background, and a track record of shaping design

Qualifications

• Proven AI engineering experience: designing and shipping AI skills, agents, or automated development workflows.
• 6+ years frontend experience with EmberJS, including 3+ years in senior roles.
• Experience with design systems, tokens, and Figma Dev Mode integration.
• Commitment to unit/UI testing and CI/CD automation.
• Broad architecture thinking across REST/GraphQL, micro-frontends, and web performance.
• Ability to evaluate and debug AI-generated code for issues.

Responsibilities

• Design & Build AI Engineering Systems creating reusable AI skills and guardrails.
• Design-to-Code automation for EmberJS components from Figma tokens.
• Own EmberJS project scaffolding and standard architecture.
• Ensure features ship with full test coverage and CI/CD gated merges.
• Configure and maintain developer tooling and state management practices.
• Collaborate with peers to align UI boilerplate with full-stack infrastructure.
• Lead incident resolution and build automated preventative solutions.

Skills

EmberJS expertise

AI engineering

Design systems

Testing & CI/CD

Full-stack design

AI output evaluation

Education

Bachelor's or Master's in CS

Tools

Ember CLI

Ember FastBoot/SSR

Embroider/Webpack

ESLint

Prettier

Ember Data

Job description

Contract: 3+ months with possibility of extension

Location: Pittsburgh, PA or Remote living in EST Time Zone (Requires occasional travel to Pittsburgh office)

Pay Rate: $60-$65/hourly (W2)

ABOUT THE ROLE:

We are looking for a Senior UI Engineer who is resourceful, dedicated, and passionate about establishing robust, high-performance foundations for ambitious user-facing applications. In this role, you will not simply use AI tools: you will design and build the underlying AI workflows, subagents, and reusable skills that allow our engineering team to scale with speed, reliability, and precision.

You bring extensive, hands-on experience with modern front-end technologies (particularly EmberJS), and building automated AI engineering systems. Our ideal candidate thrives on solving complex architectural setup challenges, setting up continuous testing guardrails, and driving our UI modernization strategy.

WHAT YOU'LL DO (The Day to Day)

• Design & Build AI Engineering Systems: Create, version, and maintain reusable AI skills, subagents, and automated review guardrails that enforce architecture standards, accessibility compliance, and code quality before human review.
• Design-to-Code Automation: Build and maintain automated UI skills that read directly from Figma Dev Mode tokens/components and generate standardized, production-ready EmberJS components matching house architecture and conventions.
• Own Scaffolding & Architecture: Design, create, and own the standard EmberJS application for all new projects, including project scaffolding and essential configurations aligned with "The Ember Way."
• Enforce Definition of Done: Ensure all features ship with complete unit and UI test coverage that run automatically in the CI/CD pipeline on every commit, blocking merges on test failures.
• Establish Developer Tooling: Configure and maintain essential developer environment tooling (e.g., Cursor environment setups, ESLint, Prettier, Embroider/Webpack) and state management best practices (Ember Data).
• Cross-Stack System Alignment: Collaborate with lead engineers and architects to align the UI boilerplate with our broader full-stack infrastructure, APIs, and micro-frontend strategy.
• Issue Resolution & Quality: Lead complex production incident resolution, diagnose subtle system failures, and implement long-term automated preventative solutions.

YOU’VE GOT WHAT WE NEED (The Must Haves)

• Demonstrated AI Engineering Experience: Proven experience designing, building, and shipping AI skills, agents, or automated development lifecycle workflows (e.g., custom review agents, test generation tools, or automated pipeline guardrails). Passive usage or prompt engineering alone does not meet the bar.
• EmberJS & Front-End Expertise: Bachelor’s or Master’s in Computer Science or related field with 6+ years of relevant front-end experience, including 3+ years in a senior capacity with EmberJS (Ember CLI, Ember FastBoot/SSR, Ember Data, and Embroider).
• Design Systems & Figma Dev Mode Integration: Direct experience managing and building against design systems, tokens, and automated component translation using Figma Dev Mode.
• Testing & CI/CD Discipline: Inseparable commitment to unit and UI testing as a core requirement of feature delivery, with experience wiring automated execution into CI/CD pipelines.
• Full-Stack & System Design Breadth: Broad architectural reasoning across APIs (RESTful/GraphQL), state management, micro-frontends, backend contracts, and web rendering performance.
• Critical Evaluation of AI Output: Ability to rigorously evaluate, supervise, and debug AI-generated code for architectural flaws, security issues, and performance regressions.

GOT THESE, TOO SWEET (The Nice to Haves)

• High transactional e-commerce experience.
• Monorepo management tools (e.g., Lerna, Nx).
• Cross-stack framework familiarity (e.g., React, Next.js).
• Experience with Web Components, StencilJS, Lit, or Style Dictionary.
• Storybook & MDX documentation sandboxes.
• Native mobile application context (iOS / Android).

We are an equal opportunity employer and value diversity at The Mice Groups Inc. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.

Pursuant to the Los Angeles Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.