react engineer jobs in Ottawa

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897 react engineer job listings in Canada. Find daily updated positions from leading job boards.

  • Senior UI Engineer

    9 hours ago


    Ottawa, Ontario, Canada Elastic Full-time

    Elastic is seeking a Senior Software Engineer for the Streams UI team to shape and enhance our user interface. You will work on Fleet and Streams, delivering intuitive UI components with TypeScript, React, and Node.js, while collaborating across a distributed team on GitHub and Slack.You’ll lead architecture discussions, drive code quality, and help...


  • Ottawa, Canada Carta Full-time €181,000 - €213,000 Contract

    Carta’s Investors unit is building the system of record for private markets, connecting fund financials to tax and LP reporting. As a Senior Software Engineer II, you will lead technically complex projects and mentor teammates while delivering scalable solutions across the platform. You’ll work with Python, Django, React, Postgres, and Kafka, plus Java,...


  • Ottawa, ON, Canada Cognizant Full-time

    We are seeking a Senior .NET Full Stack Engineer with 7+ years of experience designing, developing, modernizing, and supporting business-critical enterprise applications. The role requires deep expertise across backend engineering, modern web development, Microsoft Azure, integration, data, DevOps, security, and production operations. The successful...


  • Ottawa, ON, Ottawa Census Division, ON; Ontario, Canada Affirm Full-time

    Elevate your software engineering career with Affirm as a Senior Software Engineer. This remote role focuses on shipping web and mobile applications, emphasizing collaboration and innovative problem-solving. At Affirm, you will play a vital role in the Marketplace and App Experience domain, collaborating with cross-functional teams to enhance user journeys...


  • Ottawa, ON, Ottawa Census Division, ON; Ontario, Canada Postscript Full-time

    Senior Fullstack Engineer, Customer Context Remote Postscript is the AI messaging platform trusted by 20,000+ Shopify brands — including Brooklinen, Ruggable, True Classic, and Dr. With a mission to make SMS your number one revenue driving channel, we built the best-in-class SMS marketing platform and launched revenue-driving AI features not available...


  • Ottawa, Ontario, Canada Babylist Full-time

    We're hiring a Staff MLE for the Discovery team to own recommendations and personalization across Babylist’s consumer experience — the homepage feed, product recs, search, and the ML-powered systems that make registry building feel effortlessBabylist was built on editorial recommendations: products chosen by people with deep baby gear expertise. That...


  • Ottawa, ON, Canada Guarana Technologies Inc. Full-time

    We are a very well-structured and distributed Software Development Agency out of Montreal. We are looking for an ambitious Full Stack Developer to join our talented multi-disciplinary team as the company continues to grow. This position is open for remote work. Responsibilities At Guarana, Mobile and Web projects are a team sport so you will work directly...


  • Ottawa, Canada Mach7 Technologies Full-time €150,000 - €190,000 Contract

    Waterloo Southeast, Canada | Posted on 09/01/2026 Team: Technology Location:Hybrid, must be within range of our Waterloo Office About the Role Software engineering is changing rapidly. We believe AI will fundamentally change how great teams understand problems, design solutions, build, test, deploy, and operate software. Mach7 Technologies is looking for...


  • Ottawa, ON, Ottawa Census Division, ON; Ontario, Canada Affirm, Inc. Full-time €181,000 - €241,000 Temporary

    At Affim, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most. As we build Affim's advertising platform and evolve Marketplace into a best in class shopping destination, the ability to route and discover is one of the greatest levers for...


  • Ottawa, Ontario, Canada Affirm, Inc. Full-time

    At Affim, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most. The Card Acquisition team is critical in bringing our exciting product vision to life. Like any other financial company, our first impression is essential in communicating trust...


  • Ottawa, Ontario, Canada Affirm Full-time

    At Affim, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most. As we build Affim's advertising platform and evolve Marketplace into a best in class shopping destination, the ability to route and discover is one of the greatest levers for...


  • Ottawa, Canada Carta Full-time €181,000 - €213,000 Contract

    The Company You’ll Join Carta is the connected platform and AI-native ecosystem for private capital. Built to replace fragmented tools with a single system of record, Carta brings together the software, services, and legal infrastructure that founders use to manage equity, fund managers use to run administration and reporting, and legal teams use to close...

  • Backend Engineer

    4 days ago


    Ottawa, ON, Ottawa Census Division, ON; Ontario, Canada Amuse Full-time €85,000 - €105,000 Temporary

    This range is provided by Amuse. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range $85,000.00/yr - $105,000.00/yr Amuse is a platform that helps people discover local arts and culture. Think of it as your personal travel guide: but instead of trying to lecture you for an hour, it enriches...

  • Software Engineer

    20 hours ago


    Ottawa, ON, Canada Fellow - AI Meeting Assistant Full-time $65,000 - $85,000 Contract

    At Fellow.ai, we're on a mission to give every employee their own AI-powered Chief of Staff. It's an assistant that understands your meeting discussions, surfaces key insights, answers questions, and takes action so you can focus on what matters most. We're hiring a small group of exceptional new grads to join our Engineering team full-time. This isn't a...


  • Ottawa, ON, Ottawa Census Division, ON; Ontario, Canada League Full-time

    We’re building the next generation of intelligent, human-centered products that improve people’s health and well-being We’re looking for a Principal Design Engineer to own the bridge between design and code Our design system serves web, iOS, and Android across every product and customer we support, which makes it the highest-leverage thing the...


  • Ottawa, Ontario, Canada Postscript Full-time

    Senior Fullstack Engineer, Customer Context Remote Postscript is the AI messaging platform trusted by 20,000+ Shopify brands — including Brooklinen, Ruggable, True Classic, and Dr. Squatch. With a mission to make SMS your number one revenue driving channel, we built the best-in-class SMS marketing platform and launched revenue-driving AI features not...


  • Ottawa, Ontario, Canada Micromart Full-time

    A retail technology company is seeking a Senior Frontend Engineer to build and evolve core product experiences used by entrepreneurs across various platforms. The role requires expertise in React, React Native, and TypeScript, alongside strong experience in frontend application design. You will own features end to end, collaborate with cross-functional...


  • Ottawa, ON, Ottawa Census Division, ON; Ontario, Canada Cohere Full-time €230,000 - €295,000 Temporary

    Who are we? Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems. Who are we? Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to...


  • Ottawa, Ontario, Canada Affirm Full-time

    At Affirms, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most.Marketing & Privacy Engineering (MPE) builds trusted, privacy-aware consumer web experiences and measurement systems that enable sustainable growth. Within MPE, the Marketing...


  • Ottawa, Ontario, Canada Affirm, Inc. Full-time

    Marketing & Privacy Engineering (MPE) builds trusted, privacy-aware consumer web experiences and measurement systems that enable sustainable growthWithin MPE, the Marketing pillar owns Affir’s Logged-Out Web experiences, web experimentation, client-side tagging, marketing technology integrations, attribution, and measurementAs a Senior Software Engineer on...