140 frontend software engineer jobs at 103 companies in Niagara Falls, NY
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Senior Frontend Software Engineer, AI UX
Toronto, Ontario, Canada
$140k-$200k/yrHybridFull Time
Pebl: Platform for hiring, paying, and managing global employees.
8+ YOE8+ years full-stack software engineering with strong frontend/UX focus, 1+ year building LLM/agentic products, React/TypeScript proficiency, prompt design and observability experience.
San Francisco or Ottawa or Phoenix or Toronto or Los Angeles or Denver or Salt Lake City or Atlanta or Chicago or Houston or Portland or New York City or Vancouver or San Diego or Washington, D.C. or Sacramento or Jacksonville or Seattle or Mexico City or Austin or Miami or Boston or Dallas
$124k-$226k/yrHybridFull Time
Scribd: Subscription-based digital library for e-books, audiobooks, and documents.
6+ YOERequires 6+ years of frontend software engineering experience, JavaScript/TypeScript and React expertise, modern web framework experience, architecture knowledge, performance optimization, testing, and strong collaboration skills.
Feathery: AI-powered data intake and workflow automation software.
3+ YOE3+ years building frontend apps with React or similar, strong JavaScript/TypeScript skills, experience shipping features end-to-end, UX focus, and strong communication.
San Francisco or Toronto or United States or Canada
$190k-$249k/yrRemoteFull Time
EvenUp: AI-powered document generation and analysis for personal injury law.
5+ YOE5+ years engineering experience, building production-quality software; ownership of projects end-to-end; experience with frontend systems for deploying LLM-based algorithms; strong communication, mentoring, and cross-team collaboration skills.
OktaNASDAQ: OKTA: Provide secure identity management and authentication for enterprises.
5+ YOE5+ years frontend/full-stack experience with Next.js, React, and TypeScript; strong CSS and accessibility practices; headless CMS integration; testing, Git and CI/CD; performance and SEO expertise; familiarity with AI-assisted development tools.
LyftNASDAQ: LYFT: Provides an on-demand ride-hailing and multimodal transportation platform.
3+ YOE3+ years software engineering experience; advanced JavaScript; experience with React, NodeJS/Express, design systems, testing, and web performance; strong communication and problem solving.
JavaScript, React, NodeJS, Express, Bootstrap, Salesforce Lightning, GitHub Primer
Venn: Digital banking and financial management platform for Canadian businesses.
6+ YOE6+ years in frontend development; expert in JavaScript/TypeScript, React/Next.js, HTML5, CSS3; strong REST API design; Jest and React Testing Library experience; proficient with Figma; eligible to work in Canada.
Bettermode: Builds branded online community platforms for customer engagement.
Deep expertise in TypeScript and React (Next.js), experience building production web apps, integrating LLMs/AI into UIs, product-minded development, and mentoring other engineers; multi-tenant experience preferred.
TypeScript, React, Next.js, Claude Code, Cursor, LLM
LinkGraph: Full-service digital marketing agency and SEO software provider.
5+ YOERequires 5+ years of frontend development, 2+ years owning project outcomes, Next.js, Shopify, WordPress, headless CMS, QA, AI tools, ClickUp, and reliable EST overlap.
Next.js, Shopify, WordPress, Liquid, Claude, Codex, Kimi, ClickUp
MarqetaNASDAQ: MQ: A platform for modern card issuing and payment processing.
5+ YOE5+ years building web and mobile apps with strong React Native expertise; experience with React.js, state management (Redux/Context), TypeScript/JavaScript, native iOS/Android modules, REST/GraphQL, CI/CD, and mentoring engineers.
Over99: Crypto-first online casino and iGaming platform operator.
Recent graduate or early-career frontend engineer with strong fundamentals in React, TypeScript, JavaScript, HTML/CSS, experience or interest in real-time systems (Socket.IO/WebSockets), state management, and AI-assisted tooling.
US Mobile: A mobile virtual network operator providing flexible cell phone plans.
8+ YOE8+ years front-end experience; proficiency in TypeScript, React, state management, accessibility, responsive design; experience with complex legacy code and cross-platform UIs.
Interac: Operates Canada's national debit and digital payment network.
5+ YOE5+ years front-end experience with Angular (6+), strong HTML5/CSS3/JavaScript/TypeScript skills, university degree in Computer Science or equivalent, experience with testing, CI/CD, Git, and cloud-native design.
Power: Consumer-grade platform for patients to navigate clinical trials.
Build large product features, shape technical direction, work autonomously, and contribute to engineering culture, hiring, product development, and engineering excellence.
React, NextJS, TypeScript, AWS, FlightControl, GitHub, Linear, Google Cloud
Canada or Ontario or British Columbia or Toronto or Vancouver
$116k-$145k/yrRemoteFull Time
MarqetaNASDAQ: MQ: Providing cloud-based card issuing and payment processing infrastructure.
5+ YOE5+ years building web and mobile apps with React Native and React; experience with native modules (Swift/Kotlin/Objective-C/Java), state management, CI/CD, REST/GraphQL, mentoring, and payments preferred.
Reactiv: Platform for merchants to build mobile shopping apps.
2+ YOERequires React, TypeScript or strong JavaScript, UI component experience, accessibility awareness, problem-solving skills, and roughly 2–4 years building web or mobile applications or equivalent portfolio work.