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35 ui developer jobs at 26 companies in Boulder, CO

PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
Help us #BeatIndeed & #BeatLinkedIn
1mo
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Sr. Software Engineer - Full Stack - UI (Denver, US)
Denver, Colorado, United States
$90k-$120k/yr OnsiteFull Time
KUKA
KUKA: Provides industrial robots and automated logistics and production systems.
7+ YOEBachelor's/Master's in CS or equivalent, 7+ years software development, 4+ years front-end/UI, expertise in TypeScript/Angular/React/SignalR/Vue, REST/GraphQL, CI/CD, Linux/Windows, strong problem-solving and communication.
TypeScript, Angular, React, SignalR, Vue, REST, GraphQL, Linux, Windows, CI/CD
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2d
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Morpheus Software Principal UI/UX engineer
Ft. Collins or Houston or Durham
$152k-$349k/yr HybridFull Time
Hewlett Packard Enterprise
Hewlett Packard EnterpriseNYSE: HPE: Provides global edge-to-cloud technology solutions and IT infrastructure services.
10+ YOEDeep front-end expertise with React and TypeScript, strong UX and design sense, 10+ years building production web apps, bachelor\u0002s degree or equivalent, experience with cloud platforms and design systems.
React, TypeScript, HTML, CSS, RESTful APIs, AWS, Microsoft Azure, Google Cloud
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3mo
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Software Engineer, UI/UX
Broomfield, Colorado, United States
$107k-$125k/yr HybridFull Time
Lightship
Lightship: Manufacturer of aerodynamic all-electric recreational travel trailers.
2+ YOEBachelor’s degree or 2+ years of relevant experience; Kotlin for Android; Flutter; UI design basics; embedded Linux; databases; Git; CI/CD; strong communication.
Kotlin, Flutter, Firebase, ProtoBufs, MQTT, WebSockets, Embedded Linux, SQLite, Git, CI/CD, AWS IoT Core, Lambda, C#, Python, Ethernet, WiFi, LTE, Bluetooth, XCode, TestFlight
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1mo
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UX/UI Project Engineer I
Lone Tree or Englewood
$143k-$197k/yr OnsiteFull Time
Sierra Nevada Corporation
Sierra Nevada Corporation: Develops mission-critical aerospace and national security technology systems.
9+ YOEBachelor's in a technical field; 9+ years engineering experience with 2+ years in a lead role; strong UX/UI development and training/Support management experience; Top Secret security clearance required with SCI eligibility.
ServiceNow, MS Project, Jira, front-end technologies (React, Angular, Vue.js)
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3d
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UI/UX Engineer – Mid (TS/SCI with CI Polygraph)
Aurora, Colorado, United States
$145k-$175k/yr OnsiteFull Time
DeNOVO Solutions
DeNOVO Solutions: Provides defense and intelligence technology, software engineering, and cybersecurity services.
5+ YOE5–10 years experience designing and prototyping UI/UX for mission systems; bachelor’s in computer science or related (or equivalent experience); TS/SCI with CI Polygraph required.
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1mo
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Staff / Sr Staff Full Stack UI Engineer
Boulder, Colorado, United States
$98k-$146k/yr OnsiteFull Time
SciTec
SciTec: Provides advanced remote sensing and missile defense technology solutions.
2+ YOEBachelor's in a technical field, 2+ years building user-facing web applications; strong JavaScript (React, Node.js, Redux); real-time data experience; Linux and Git proficiency; ability to obtain DoD security clearance.
JavaScript, React, Node.js, Redux, Linux, Git, TypeScript, Cesium, Figma, Adobe XD, Axure, Python, C++, Protocol Buffers, ZeroMQ, Kafka, gRPC, REST APIs, Docker, Jenkins, GitLab CI/CD, SQL, PostgreSQL, Redis
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2d
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Morpheus Software Principal UI/UX engineer
Fort Collins or Houston or Durham
$152k-$349k/yr HybridFull Time
Hewlett Packard Enterprise
Hewlett Packard EnterpriseNYSE: HPE: Providing global edge-to-cloud infrastructure and IT solutions for businesses.
10+ YOEExpert front-end engineer with React and TypeScript, 10+ years' experience, strong UX/product instincts, experience with cloud platforms and design systems, bachelor's degree or equivalent.
React, TypeScript, HTML, CSS, RESTful APIs, AWS, Microsoft Azure, Google Cloud, CI/CD
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2d
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Morpheus Software Principal UI/UX engineer
Fort Collins or Houston or Durham
$152k-$349k/yr HybridFull Time
Hewlett Packard Enterprise
Hewlett Packard EnterpriseNYSE: HPE: Provides edge-to-cloud IT infrastructure and platform services.
10+ YOE10+ years building production web applications with React and TypeScript; bachelor’s degree or equivalent; front-end architecture, design systems, accessibility, and cloud platform experience; strong product and communication skills.
React, TypeScript, HTML, CSS, AWS, Microsoft Azure, Google Cloud
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1mo
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UI/UX Software Engineer - Aurora, CO or Meridian, CO
Aurora or Meridian
$140k-$199k/yr OnsiteFull Time
ICR
ICR: Independent research and development organization
Top Secret clearance with SCI access; US Citizenship; Angular 17+, Tailwind, MapLibre; Linux; API design; SDLC; strong communication; self-motivated; team collaboration.
Angular, TypeScript, Git, GitLab-Pipelines, JSON Schema, OpenAPI, Protocol Buffers, Cesium, OpenLayers, MapLibre, Linux
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1mo
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Product Engineer (UI-Focused) — Horizon
San Francisco or New York City or Washington or Boston or Los Angeles or Seattle or Denver or Chicago or Atlanta or United States
$172k-$242k/yr RemoteFull Time
Prefect
Prefect: Builds and operates resilient data workflow orchestration platforms.
5+ YOE5+ years full-stack engineering with front-end focus; strong proficiency in TypeScript and React; experience shipping user-facing products; familiarity with Model Context Protocol and AI/LLM tooling; on-call/incident participation.
Python, TypeScript, React, TanStack, Model Context Protocol (MCP), Claude Code, Codex
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2mo
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Principal Software Engineer - Frontend, Developer Experience
San Francisco or Phoenix or Denver or Austin or Jacksonville or Bridgeport or Boston or New York City or Atlanta
RemoteFull Time
Palo Alto Networks
Palo Alto NetworksNASDAQ: PANW: Provides enterprise-grade network, cloud, and endpoint security software.
5+ YOEDevelop frontend UIs with TypeScript/React; collaborate with product/design; contribute to architecture and testing; mentor colleagues.
TypeScript, React, GraphQL, Node.js
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2mo
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Software Engineer
Denver, Colorado, United States
$115k-$155k/yr OnsiteFull Time
Performance Drone Works
Performance Drone Works: Manufacturer of autonomous, tactical unmanned aerial systems for defense.
3+ YOEC++ software development in embedded/Linux environments; UI with Qt/QML; CI/CD; collaboration across teams; 3–5 years experience.
C++, Qt, QML, Linux, Git, CMake, QMake, CI/CD
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3w
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Frontend Software Developer II
Aurora or United States
$69k-$131k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
2+ YOEU.S. citizenship and ability to obtain/maintain TS/SCI clearance, Bachelor's in STEM + 2 years experience, experience with JavaScript and Angular, UI development, strong communication and critical thinking.
JavaScript, Angular, Java, C++, Confluence, Eclipse, Jira, Git
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2mo
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Full Stack Software Engineer – UI/UX & Web Engineering (Azure)
New York or Washington or Denver or Seattle or Los Angeles or Chicago or Austin or Dallas
OnsiteFull Time
WSP
WSPToronto Stock Exchange: WSP: Provides engineering, design, and environmental consultancy services globally.
12+ YOEBachelor's degree; 12+ years full-stack experience; strong React/Vue; REST APIs; Python/Node/.NET; Azure services; DevOps; Git; Agile.
React, Vue, Python, Node.js, .NET, REST APIs, Azure, Azure App Services, Azure Functions, Cosmos DB, Azure Storage, CI/CD, Git
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3mo
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Full Stack Developer
Littleton, Colorado, United States
$100k-$120k/yr OnsiteFull Time
PassTime
PassTime: Provides GPS vehicle tracking and automotive asset management solutions.
6+ YOE6+ years of progressive full stack development; Bachelor's in a related field; strong JS framework experience; US work authorization; ability to work after hours/weekends as needed.
JavaScript, Angular, React, API integration, AWS, Azure, MS SQL Server, TFS, DevOps, Git, GitLab, WebAPI, REST, CSS, UI/UX
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1mo
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SR Software Engineer- Puerto Rico/Florida/Colorado
Aguadilla or Cape Canaveral or Littleton
$93k-$186k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Experience with C#, Angular/TypeScript, and Kendo Angular UI; able to obtain and maintain a Secret clearance; US citizenship required. Involved in requirements, design, development, testing, and troubleshooting of cloud web applications.
C#, Angular, TypeScript, Kendo Angular UI, Entity Framework, MySQL, NGRX, REDIS, Jest, Cypress
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2mo
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Design Engineer
New York or Denver or San Francisco or Remote
$140k-$210k/yr HybridFull Time
Ambrook
Ambrook: Financial management platform for agricultural and industrial businesses.
3+ YOE3+ years building high-quality web and mobile experiences; design system ownership; strong UI/UX; advanced frontend skills; collaborative; React/TypeScript; mission-driven.
Next.js, React, TypeScript, React Native, Expo, Firestore, Google Cloud Platform, BigQuery, Figma
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3mo
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Software Developer - Software SME
Denver or United States
$125k-$150k/yr RemoteFull Time
Cape Fox Federal Integrators
Cape Fox Federal Integrators: Provides government agencies with professional, technical, and training services.
7+ YOE7+ years experience, bachelor’s degree, US work authorization, Public Trust (Tier 1) or higher.
UI design, Database design, Software development
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1mo
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Software Engineer II (Frontend)
San Francisco or Atlanta or Austin or Boston or Chicago or Dallas or Denver or Houston or Jacksonville or Los Angeles or Miami or New York City or Phoenix or Portland or Sacramento or Salt Lake City or San Diego or Seattle or Washington, D.C. or Ottawa or Toronto or Vancouver or Mexico City
$103k-$186k/yr HybridFull Time
Scribd
Scribd: Subscription-based digital library for e-books, audiobooks, and documents.
4+ YOE4+ years frontend software development; strong TS/JS/React; Next.js; Rails familiarity; API integration; accessibility; testing; A/B testing; AI tools.
TypeScript, JavaScript, React, Next.js, Ruby on Rails, REST, GraphQL, Redis, Kafka, MySQL, Terraform, CI/CD, Monorepos, UI Libraries, AI Tools
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4w
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Senior Frontend Software Engineer - Ground Software
Laurel or Austin or Greenwood Village
$120k-$190k/yr HybridFull Time
York Space Systems
York Space SystemsNYSE: YSS: Designs and manufactures modular spacecraft platforms and mission solutions.
6+ YOERequired: Bachelor's in CS or related, 6+ years frontend experience, deep React and TypeScript, design system and component library experience, Yarn/Babel/Material-UI, Git, REST APIs, mentoring ability, and ability to obtain security clearance.
React, TypeScript, C# .NET, Docker, Kafka, REST, Yarn, Babel, Material-UI, Git, TanStack Query, WebAssembly (WASM), WebGL
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