java backend engineer jobs in Ottawa

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317 java backend engineer job listings in Canada. Find daily updated positions from leading job boards.


  • Ottawa, ON, Canada Michael Page Full-time

    A leading recruitment firm is seeking a Senior Java Lead Engineer to design and maintain data pipeline architecture. You will implement data products, provide tech support, and ensure data quality while collaborating with cross-functional teams. Ideal candidates will have extensive experience with Java and big data tools, with a focus on banking solutions....

  • Backend Engineer

    6 days ago


    Ottawa, ON, Ottawa Census Division, ON; Ontario, Canada Outlier Full-time €50 Temporary

    Earn Up To $50/hr as an OpenClaw Agent Builder Shape the future of autonomous agents like OpenClaw. Freelance, remote, up to $50 USD/hr. Weekly payments. Trusted by 10,000+ software engineers worldwide MIN EXP REQUIRED 2+ years PAY RATE Up to $50 USD/hr Earn Up To $50 USD/hr— Plus Additional Incentives Rates vary based on expertise and project...


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

    Director of Software Full-Time AuraNet is Dominion Dynamics' mesh networking platform for autonomous assets working in contested and disconnected environments. It has to move data securely and in real time over links that aren't conventional wired networks, where bandwidth is scarce, connections drop, and the cloud may not be reachable at all. You'll...


  • Ottawa, ON, Ottawa Census Division, ON; Ontario, Canada Veeva Systems Full-time €110,000 - €270,000 Temporary

    Senior Software Engineer - Java Senior Software Engineer - Java Veeva Systems, a pioneer in industry cloud and one of the fastest-growing enterprise SaaS companies, is on a mission to help life sciences companies bring therapies to patients faster. As a public benefit corporation, we balance the interests of customers, employees, society, and investors...


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

    Build secure backend systems in Python and Rust for AuraNet from Ottawa or Toronto, supporting real-time data across disconnected environments. As a Senior Software Engineer Backend, you will design distributed systems for Dominion Dynamics’ mesh networking platform. The work spans networking, security, containers, and autonomous platforms. You will own...


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

    A culture and arts platform is seeking a Mid-Senior Back End Developer in Ottawa to enhance its API for the Amuse platform. Candidates should have experience with Go or equivalent languages, and a knack for data analytics and GIS applications. This fully remote role offers equity, generous vacation, and collaborative team dynamics. Join us to enrich the...


  • Ottawa, ON, Ottawa Census Division, ON; Ontario, Canada Mozilla-Corporation Full-time €104,000 - €139,000 Temporary

    The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren't beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their...

  • Backend Engineer

    5 days ago


    Ottawa, ON, Ottawa Census Division, ON; Ontario, Canada Pubgenius Inc. Full-time

    A tech development agency is seeking a .NET Developer to build backend systems and APIs while collaborating with frontend teams. The ideal candidate should have strong experience with .NET and C#, knowledge of RESTful APIs, and database management skills. This position offers remote work options and the opportunity to work on diverse projects across various...


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

    A tech company specializing in event-driven architecture is seeking a Senior Software Developer to join their AI team. The role involves leading technical projects, creating robust APIs, and collaborating across functions to enhance product offerings. Candidates should have over 7 years of experience, strong backend development skills particularly in Python...

  • Backend Engineer

    5 days ago


    Ottawa, ON, Canada Pubgenius Inc. Full-time

    A tech development agency is seeking a .NET Developer to build backend systems and APIs while collaborating with frontend teams. The ideal candidate should have strong experience with .NET and C#, knowledge of RESTful APIs, and database management skills. This position offers remote work options and the opportunity to work on diverse projects across various...


  • Ottawa, Ontario, Canada Mozilla-Corporation Full-time

    The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren't beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their...


  • Ottawa, ON, Canada Solace Full-time $135,000 - $165,000 Contract

    A tech company specializing in event-driven architecture is seeking a Senior Software Developer to join their AI team. The role involves leading technical projects, creating robust APIs, and collaborating across functions to enhance product offerings. Candidates should have over 7 years of experience, strong backend development skills particularly in Python...


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

    Outlier is seeking OpenClaw Agent Builder contractors to help shape autonomous agents. This remote, freelance role offers up to $50 USD/hr with flexible, non-mandatory hours and weekly payments. Contributions support AI development and multi-step agent orchestration. Ideal candidates have 2+ years in backend engineering or AI automation, with a track record...


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

    Outlier is seeking a skilled OpenClaw Agent Builder for remote freelance work. Shape autonomous agents, build and evaluate multi-step workflows, and help train LLMs with real-world tasks. Weekly payments and flexible hours are available. Ideal candidates bring 2+ years in backend engineering or AI automation, with experience deploying production-grade...


  • Ottawa, ON, Ottawa Census Division, ON; Ontario, Canada Accenture Full-time €99,450 - €209,900 Temporary

    Full Stack Engineering Manager, Front-End Angular/React & Back-End Java Custom Software Engineering Manager | Senior Level | Full time At Accenture Technology, you'll help lead enterprise transformation programs, guide engineering teams, and deliver innovative cloud-native solutions for some of Canada's leading organizations. A Full Stack Engineering...


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

    Outlier helps the world’s most innovative companies improve their AI agents. Earn up to $50 USD/hr as an OpenClaw Agent Builder—freelance, remote, with weekly payments. Build, test, and refine autonomous agents in real-world workflows. We welcome applicants from multiple countries including Canada. Write eval rubrics, debug traces, and stress test...


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

    Outlier invites experts to shape the future of autonomous agents like OpenClaw. This freelance, remote role offers up to $50 USD/hr and weekly payments. Most contributors spend 5-10 hrs/week, with potential to scale earnings based on project needs. Join a platform trusted by thousands of engineers worldwide, where you can choose flexible scheduling and...


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

    Outlier is seeking skilled contributors to build OpenClaw-like autonomous agent components. Remote freelance role with pay up to $50 USD/hour. You can set your own schedule, typically 5–10 hours/week, potentially up to 40 hours. Payments are made weekly and via multiple payment methods. Ideal candidates have 2+ years in backend engineering or AI...


  • Ottawa, ON, Ottawa Census Division, ON; Ontario, Canada Accenture PLC Full-time €99,450 - €209,900 Temporary

    We Are At Accenture Technology, you'll help lead enterprise transformation programs, guide engineering teams, and deliver innovative cloud-native solutions for some of Canada's leading organizations. You Are A Full Stack Engineering Manager who brings strong front-end and back-end development experience, cloud-first delivery expertise, and the leadership...


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

    A tech firm specializing in HR solutions is seeking a Java Full Stack Engineer to join their remote agile team. The role involves designing and maintaining full-stack applications for a multi-tenant cloud SaaS solution, specifically working on features related to Payroll, Benefits, and Time & Attendance. Candidates should possess proficiency in Java and...