49 ui developer jobs at 31 companies in Middleton, MA
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UI Engineer
Boston or New York City
OnsiteFull Time
5+ YOERequires 5+ years of frontend or UI engineering experience, JavaScript/TypeScript, HTML5, CSS, React or Angular, design systems, APIs, middleware, and state management.
JavaScript, TypeScript, HTML5, CSS, React, Angular, Storybook.js, RESTful APIs, GraphQL APIs
5d
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UI Developer (Compute Test, North Reading)
North Reading, Massachusetts, United States
$100k-$160k/yr OnsiteFull Time
3+ YOE3+ years software development experience, strong React and TypeScript skills, component-based UI and design-system experience, familiarity with desktop UI environments, UI testing and collaboration with UX/Product teams.
React, TypeScript, WPF/XAML, Electron, Figma, Storybook, Jest, Playwright, Testing Library, Git, GitHub, Jira, CI/CD, WCAG
2d
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Principal UI Developer
Boston or United States
OnsiteFull Time
Engageware: Provides AI-powered customer engagement and appointment scheduling software.
8+ YOERequires 8+ years in front-end or full-stack web development, 3+ years at senior/principal IC level, expert React and TypeScript, Angular-to-React migration, API ownership, testing, accessibility, and AI tooling experience.
React, TypeScript, Angular, React Query, Zustand, Redux Toolkit, Storybook, Figma, Figma AI, v0, Claude, Spring Boot, Java, REST, WebSockets, SSE, Vitest, Jest, React Testing Library, Playwright, Cypress, MCP, Scala, Akka, SQL Server, PostgreSQL, Kubernetes, AWS
2mo
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Senior UI Software Engineer
Mansfield, Massachusetts, United States
$132k-$190k/yr HybridFull Time
7+ YOE7+ years front-end UI development; expert in Angular, TypeScript, Blazor, C#, HTML/CSS; building enterprise web apps; AI/LLM integration knowledge.
Angular, Blazor, TypeScript, C#, HTML/CSS, RESTful APIs, .NET, Python, AI services
3mo
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Sr. Software Engineer - UI/UX (Qt/QML)
Newton or Mounds View
$125k-$187k/yr OnsiteFull Time
4+ YOEBachelor’s or Master’s/PhD with relevant experience in UI/UX; strong Qt/QML/C/C++ and Python; Linux, Docker, CI/CD; real-time data; collaboration with UX teams; production-quality software in healthcare setting.
Qt/QML, C++, Python, Linux, Docker, CI/CD, Figma
3mo
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Sr. Software Engineer - UI/UX (Qt/QML)
Newton or Mounds View
$125k-$187k/yr OnsiteFull Time
4+ YOEBachelor's degree with 4+ years’ experience or Master’s with 2+ years’ experience or PhD with no experience; strong Qt/QML, C++, Python; UI/UX focus; production-level software in regulated environment.
Qt, Qt/QML, C++, Python, Linux, Docker, CI/CD, UI/UX tools, Figma
2mo
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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
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
2mo
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Full Stack Engineer (UI Focused)
Merrimack, New Hampshire, United States
$80-$100/hr OnsiteFull Time
Experienced software engineer with front-end focus, building RESTful APIs, relational and NoSQL databases, CI/CD, SDLC best practices, mentoring, JavaScript frameworks, and responsive CSS3 design.
Angular, AngularJS, Backbone.js, React JS, JavaScript, CSS3
2mo
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SENIOR SOFTWARE ENGINEER
Methuen, Massachusetts, United States
OnsiteFull Time
8+ YOE8+ years of software development; OO design; C++ multi-thread; motion control; UI development a plus; agile; travel up to 5%; capable of independent and collaborative work.
C++, Multithreading, UI development, Motion control software, Kinematics and control algorithms, Agile
1mo
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Software Engineer - UI/UX (Fall 26' Intern)
Natick, Massachusetts, United States
$28-$32/hr OnsiteInternship
Currently enrolled or recent graduate in CS/CE or similar; fluent in C#, Java, or JavaScript; experience with Figma or Adobe XD; front-end frameworks like WPF, React, or Angular; strong OOP and MVVM skills; Windows front-end/.NET WPF or Unity experience useful; valid work eligibility required.
C#, Java, JavaScript, Figma, Adobe XD, WPF, React, Angular, .NET, Unity, Model-View-ViewModel
1mo
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Software Engineer: Web Developer
Cambridge, Massachusetts, United States
$110k/yr OnsiteFull Time
Bachelor's degree in CS or related; strong HTML, CSS, JavaScript; experience with Vue, React or Angular; CMS knowledge (WordPress/Joomla); UI/UX and graphic design skills; REST API development; Agile and test-driven practices.
HTML, CSS, JavaScript, Vue, React, Angular, WordPress, Joomla, REST API, CI/CD, git, GitHub, GitLab, Jenkins
2mo
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Android Engineer II (Client Platform)
Boston, Massachusetts, United States
$125k-$175k/yr OnsiteFull Time
2+ YOE2–4 years Android development; Kotlin and Android frameworks (Jetpack, Compose); strong UI/layout, localization, REST APIs; debugging and performance; Git.
Kotlin, Jetpack, Compose, REST APIs, Git, Android SDK
2mo
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Software Engineer I
Foxborough, Massachusetts, United States
$76k-$114k/yr OnsiteFull Time
The Kraft Group: Operates professional sports teams, stadiums, and paper manufacturing businesses.
0+ YOEBachelor's in Computer Science/Engineering required; 0–2 years software development experience; knowledge of React, Material UI, Python/Flask, pandas, Ruby, MySQL, SQL Server, Git/GitLab; Linux/Windows familiarity; strong analytical and communication skills.
React, Material UI, Python, Flask, pandas, Ruby, Linux, Windows, MySQL, SQL Server, Git, GitLab
3w
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Senior Full-Stack Software Engineer
Acton or Cranberry Township
OnsiteFull Time
5+ YOEBachelor's in CS or related,5+ years building software with C#, .NET, C++; experience with network protocols, hardware interfaces, APIs, and desktop UI development.
C#, .NET, C++, TCP/IP, UDP
1d
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Java Full Stack Engineer
Boston or Charlotte or Jersey City or New York City or Pennington or Richardson
$76k-$127k/yr OnsiteFull Time
Bachelor’s degree or equivalent experience; full-stack Java and Angular or React experience, with Spring Boot, REST web services, UI development, software integration, testing, and SDLC expertise.
Java, Angular, React, Spring, Spring Boot, REST, Microservices, Kafka, IBM MQ, OpenShift, JPA, XML, XSLT, JAXB, JAXP, MVC, JUnit, SQL Server, Oracle, MongoDB, AI
1mo
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Frontend Engineer (Boston)
San Francisco or Boston or Cambridge
$150k-$225k/yr HybridFull Time
3+ YOE3+ years building production React apps, strong TypeScript and Next.js experience, UI polish, performance, accessibility, RESTful APIs, SQL familiarity, and ability to work with design and backend services.
React, TypeScript, Next.js, Ruby on Rails, Postgres, RESTful APIs, SQL, LLMs, EHRs
2mo
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Principal Software Engineer (3D Visualization) - Electrophysiology (Waltham, MA, US, 02138)
Waltham, Massachusetts, United States
$107k-$203k/yr HybridFull Time
5+ YOEBS/MS in Computer Science or related field, 5+ years software development, strong C++, OpenGL and 3D graphics experience, object-oriented design, full SDLC, UI/UX and communication skills.
C++, OpenGL, Qt, QML, Linux, Git, Jira, JAMA
2mo
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Principal Software Engineer
Wellesley, Massachusetts, United States
$144k-$288k/yr HybridFull Time
8+ YOE8+ years software experience; 4+ years as technical leader; strong Python/Java; cloud (GCP); microservices; ML; real-time systems; UI (React/Angular).
Python, Java, GCP, React, Angular, Machine Learning, OCR, LLMs
1mo
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Senior Software Engineer, iOS (Hybrid - San Diego, CA or Acton, MA)
San Diego or Acton
$141k-$211k/yr HybridFull Time
5+ YOE5+ years software development experience, 3+ years iOS development, strong Swift skills, unit/UI testing, CI/CD and Git experience, familiarity with Bluetooth/BLE, cloud APIs/REST/OAuth 2.0/JSON, and experience with medical device or regulated environments preferred.
Swift, SwiftUI, Combine, The Composable Architecture (TCA), Kotlin Multiplatform, Bluetooth, BLE, APIs, REST, OAuth 2.0, JSON, CI/CD, Git
2mo
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Senior Application Engineer (REMOTE or HYBRID TO MA)
Worcester, Massachusetts, United States
$101k-$126k/yr HybridFull Time
7+ YOE7+ years in application development; Java/J2EE; Pega experience;Bachelor's degree; US work eligibility; strong OO design; DevOps/Azure experience.
Pega 24, React, Java, Tomcat, Object-Oriented Design, UX, HTML5, CSS, JQuery, AngularJS, JSON, Azure, DevOps, AKS
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