UI Engineer

Position: UI Engineer - BAS UI Framework

Location: Glendale, WI 53209 (Hybrid)

Duration: 6 Months contract with higher extension possibility

Shift: 1 st Shift

Payrate: $66.66/Hr. on W2 without benefits

Top 5 Non-Negotiables Skills - React + TypeScript + Design Systems/Component Libraries + REST API Integration + Front-End Testing/Performance

Description:

Why this role exists

·         We're building a shared UI Framework — the component, theming, state, and API-access layer for our next-generation Building Automation System (BAS) interface, deployed to both edge/on-premises and cloud targets.

·         This is a fixed-term engagement to add delivery capacity: you'll close a specific set of committed deliverables inside a 6-month window, working alongside our permanent engineers.

Scope of Work

·         Framework components. Build, extend, and harden reusable React + TypeScript components in our design system, including states, theming/tokens, keyboard interaction, and accessibility behavior.

·         Feature surfaces. Implement assigned BAS UI screens and workflows against defined UX designs and REST/streaming APIs, including data fetching, caching, and error/offline/degraded-connectivity states.

·         Cross-target correctness. Ensure the same UI runs correctly in both edge/on-premises and cloud-hosted deployments, on supported browsers and screen sizes.

·         Test coverage. Write and maintain unit and component tests (Jest/Vitest + React Testing Library) and contribute automated end-to-end coverage for the flows you deliver.

·         Performance. Diagnose and fix front-end performance issues — bundle size, render cost, large data-set rendering, memory retention in long-running sessions.

·         Defect burn-down. Take assigned defects from triage to verified fix, including root-cause notes.

·         Documentation and handover. Leave component docs, usage examples, and decision notes sufficient for the permanent team to own the work after the engagement ends.

Team and Delivery Model

·         You will join an established Agile scrum team as a full member alongside permanent staff.

·         Delivery is assessed at team level: sprint commitments, flow of stories to done, and the quality of what the team ships. There is no separate individual scorecard.

·         The team runs three-week sprints with backlog refinement, estimation, daily standup, sprint review and demo, and retrospective. Participation in all ceremonies is expected.

·         Ramp expectation: development environment operational and a first reviewed pull request merged within your first sprint; contributing to the team's sprint commitment from the second sprint forward.

·         Extension or conversion, if it happens, will be considered in the context of the team's outcomes and your contribution to them.

Required Qualifications

·         4+ years building production web front ends, with a bachelor’s degree in computer science or software engineering, or equivalent demonstrated experience.

·         Deep, current TypeScript and React — hooks, component composition, state management, and rendering behavior — plus fluent modern HTML and CSS (responsive layout, theming, CSS-in-JS or CSS modules).

·         Demonstrated experience building or extending a reusable component library or design system consumed by more than one application.

·         Strong debugging and performance analysis skills using browser developer tools: profiling render cost, tracing network behavior, isolating memory growth.

·         Clear understanding of the separation between application code, UI framework, and REST API, and the discipline to keep those boundaries intact.

·         Effective in a CI/CD workflow: small pull requests, automated developer tests, trunk-based or short-lived branches, code review as a normal habit.

·         Comfortable working across Windows and Linux development environments.

·         Agile delivery habits: reliable estimates, visible progress, early escalation of blockers in daily standups and story refinement.

Preferred Qualifications

·         Accessibility implementation experience against WCAG 2.1 AA, including ARIA patterns and keyboard-only operation.

·         Node.js/BFF or .NET/C# back-end familiarity sufficient to debug across the API boundary; Angular experience is also valued.

·         Real-time or high-frequency data UIs — WebSocket/SSE, virtualized tables, time-series charting.

·         Experience with Chrome and Edge browser extension development, testing, and publishing.

·         Building automation, industrial control, IoT, SCADA, or other operational-technology domains.

How we Work

·         Definition of done: code reviewed and merged, tests written and passing in CI, accessibility and browser-support checks met, documentation updated, story demoed.

·         Tooling: work is performed in repositories and issue tracker, on -provided or approved equipment and VPN. Use of AI coding assistants is permitted only per 's AI tooling policy; source code may not be submitted to unapproved third-party services.

Terms and Compliance

·         All work product and intellectual property created during the engagement is assigned to ; a signed IP assignment and confidentiality agreement is a condition of start.

·         The engagement is for the named individual only. Subcontracting, substitution, or delegation of work is not permitted without written approval.

·         Successful background check and, where applicable, customer-site security clearance requirements must be met.

·         No concurrent employment or engagement that conflicts with contracted hours or creates a conflict of interest.

·         This is a fixed-term contract engagement. It does not include employee benefits, equity, bonus, or paid time off, and carries no expectation of continued engagement beyond the stated term.