7 java ui engineer jobs at 4 companies in Fontana, CA
1w
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Senior QA Engineer
San Francisco or Los Angeles or Culver City or Dallas
$185k-$230k/yr OnsiteFull Time
5+ YOERequires 5+ years in QA or software testing, a computer science or related bachelor's degree, SQL, Java or another object-oriented language, UI/API automation, and agile experience.
Java, Playwright, Selenium, REST Assured, Postman, Jira, Claude, Cursor, SQL
3mo
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Full-Stack Engineer 5 - Ads Decisioning & Optimization
New York or Los Angeles or Los Gatos
$320k-$500k/yr OnsiteFull Time
7+ YOE7+ years of professional software engineering with full-stack experience (UI, API, backend). Proficiency in React, TypeScript/JavaScript, Node.js; backend in Java/Kotlin; strong observability and debugging tooling experience.
React, TypeScript, Java, Kotlin, Node.js, SQL, Observability tooling
1mo
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Android Engineer
Costa Mesa or Seattle or Washington
$166k-$220k/yr OnsiteFull Time
Degree in CS/CE/Aerospace or related, experience building Android map-based and data-intensive UIs, proficiency with Jetpack Compose/Java/Kotlin and backend languages (C++, Rust, Go), networking (TCP/UDP/Multicast/HTTP/protobuf/gRPC), willingness to be on-call, and ability to travel up to 30%.
Jetpack Compose, XML, Java, Kotlin, C++, Rust, Golang, TCP, UDP, Multicast, HTTP, protobuf, gRPC, Android Tactical Assault Kit (ATAK), CMake, Cargo, gradle, NixOS, CircleCI, Docker, TypeScript, React, C++/Qt, C#/.NET, ArcGIS, Cesium, MapBox, TAK, Gitlab-CI, Python, Bash
2mo
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Software Engineer - Mobile, Android
Costa Mesa, California, United States
$166k-$220k/yr OnsiteFull Time
Bachelor's degree in a technical field, experience building high-traffic/map-based UI apps, proficiency in Android (Jetpack Compose, Java, Kotlin) and backend languages (C++, Rust, Golang), networking (TCP/UDP/Multicast, HTTP/REST, protobuf/gRPC), willingness for on-call support, travel up to 30%, and eligibility for U.S. Secret clearance.
Lattice OS, Android Tactical Assault Kit (ATAK), Jetpack Compose, XML, Java, Kotlin, C++, Rust, Golang, TCP, UDP, Multicast, HTTP (REST), protobuf, gRPC, CMake, Cargo, gradle, NixOS, CircleCI, Docker, TypeScript, React, Qt, C#, Microsoft .NET, ArcGIS, Cesium, MapBox, Python, Bash, Gitlab-CI
2w
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Full Stack Software Engineer 5 - Content MiddleWare Infrastructure, Messaging
Los Gatos or Los Angeles
$388k-$558k/yr RemoteFull Time
Design and build scalable full-stack platforms and embeddable UI, strong backend microservices experience with OO languages, frontend expertise with React/TypeScript, operational ownership, mentoring, and cross-functional leadership.
GraphQL, RESTful APIs, HTML, JavaScript, TypeScript, CSS, React, Java, C#
1mo
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Full Stack Engineering 4 - Ads Measurement
New York City or Los Angeles or Los Gatos
$250k-$413k/yr OnsiteFull Time
Strong OOP knowledge (C++, Java), frontend skills (HTML, CSS, Typescript, React/Angular), REST/GraphQL, SQL, UX/UI understanding, and ads domain experience.
C++, Java, HTML, CSS, Typescript, React, Angular, REST, GraphQL, SQL
5d
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Senior SDET — Automation Quality & Test Engineering
Irvine or United States
$125k/yr RemoteFull Time
6+ YOE6+ years in software engineering, including 4+ in test automation/SDET; coding in TypeScript, JavaScript, Python, Java, or C#; API, UI/E2E, CI/CD, integration, and daily AI coding tool experience.
Blue Sage, Kwikie, Gateless, Cotality, AUS, Postman, REST-assured, pytest, supertest, Playwright, Cypress, GitHub Actions, GitLab CI, Jenkins, Azure DevOps, TypeScript, JavaScript, Python, Java, C#, Claude Code, GitHub Copilot, Cursor