senior java backend developer jobs in Ottawa

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1,201 senior java backend developer job listings in Canada. Find daily updated positions from leading job boards.


  • Ottawa, Ontario, Canada OpenText Full-time

    Build secure backend services with C++ and Java at OpenText, working onsite in Ottawa or Richmond Hill, Ontario. French and English are required.As a Senior Backend Software Developer, you will evolve OpenText’s public, multitenant SaaS cloud offering. The platform serves healthcare, financial, and government organizations with high availability, security,...


  • Ottawa, Ontario, Canada Just Eat Takeaway.com Full-time

    Build scalable Java backend services remotely for Just Eat Takeaway.com from Alberta, Manitoba, or Ontario. Apply strong system design expertise.As a Senior Java Developer, you will support the Logistics Areas and Fees team. You will architect, develop, and operate distributed systems for delivery calculations. The work includes Java 21, REST APIs, message...


  • Ottawa, Ontario, Canada OpenText Full-time

    OpenText is seeking a Senior Backend Software Developer to join our cloud SaaS platform. The role focuses on building and evolving multi-tenant services in C++ and Java, with emphasis on security, performance, and scalable design.You will work in an Agile environment, collaborate across teams, and contribute to AI-powered features. Applicants must be fluent...


  • Ottawa, Canada HHHub.eu (Taupai, UAB) Full-time €110,000 - €160,000 Contract

    Build secure banking and payment backends as a Senior Java Engineer, using Spring Boot and distributed-system technologies in an international FinTech company. Our client is an established FinTech software provider with more than 25 years of experience. You will design, develop, test, deploy, and support Java backend services. The work covers REST APIs,...

  • Senior Java developer

    2 hours ago


    Ottawa, Ontario, Canada Talent Transformation Group Full-time

    We are seeking a senior Java developer to join our team in a full-time employment capacity. This role requires expertise in Java-based systems, along with experience in audio codec integration, VOIP/ROIP protocols, and mission-critical communication systems. The successful candidate will play a key role in the development and enhancement of applications that...


  • Ottawa Brook, Nova Scotia, Canada Talent Transformation Group Inc Full-time

    Job Description Job DescriptionWe are seeking a senior Java developer to join our team in a full-time employment capacity. This role requires expertise in Java-based systems, along with experience in audio codec integration, VOIP/ROIP protocols, and mission-critical communication systems. The successful candidate will play a key role in the development and...


  • Ottawa, Ontario, Canada BlackBerry Full-time

    Build scalable Node.js microservices for BlackBerry Radar, using AWS, Redis, MySQL, and Elasticsearch across real-time IoT systems.As a Senior Full Stack Developer, you will help expand Radar’s cloud platform within BlackBerry’s engineering team. Your work spans backend development, data-intensive telemetry systems, React, and architectural decisions....


  • Ottawa Brook, NS, Victoria County, NS; Nova Scotia, Canada Talent Transformation Group Inc Full-time

    Job Description Job Description We are seeking a senior Java developer to join our team in a full-time employment capacity. This role requires expertise in Java-based systems, along with experience in audio codec integration, VOIP/ROIP protocols, and mission-critical communication systems. The successful candidate will play a key role in the development...


  • Ottawa, Ontario, Canada Miratech Full-time

    Miratech helps visionaries change the world. We are a global IT services and consulting company that brings together enterprise and start-up innovation. Today, we support digital transformation for some of the world's largest enterprises. By partnering with both large and small players, we stay at the leading edge of technology, remain nimble even as a...


  • Ottawa, Ontario, Canada Collabera Full-time

    Elevate your career with Collabera as a Senior Java Developer specialized in Oracle Commerce. Focus on delivering robust and scalable eCommerce solutions. This position requires an Oracle Commerce (ATG) Developer who possesses significant experience in software development and a strong background in Java. You will work with cross-functional teams,...

  • Senior Java Developer

    20 hours ago


    Ottawa, Ontario, Canada Miratech Full-time

    Senior Java Developer (with LLM expertise) Full-time Miratech helps visionaries change the world. We are a global IT services and consulting company that brings together enterprise and start-up innovation. Today, we support digital transformation for some of the world's largest enterprises. By partnering with both large and small players, we stay at the...


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

    Build scalable Node.js microservices for BlackBerry Radar, using AWS, Redis, MySQL, and Elasticsearch across real-time IoT systems. As a Senior Full Stack Developer, you will help expand Radar’s cloud platform within BlackBerry’s engineering team. Your work spans backend development, data-intensive telemetry systems, React, and architectural decisions....


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

    Build scalable Node.js microservices for BlackBerry Radar, using AWS, Redis, MySQL, and Elasticsearch across real-time IoT systems. As a Senior Full Stack Developer, you will help expand Radar’s cloud platform within BlackBerry’s engineering team. Your work spans backend development, data-intensive telemetry systems, React, and architectural decisions....


  • Ottawa, ON, Canada Miratech Group Full-time €120,000 - €180,000 Contract

    Build enterprise-scale routing engines with Java and Spring Boot at Miratech, developing real-time interaction distribution for contact center operations. As a Senior Routing Engine Developer, you will create scalable backend services for voice and digital interactions. You will apply distributed systems, microservices, event-driven architecture, and...


  • Ottawa, ON, Canada Flexspring, Inc. Full-time

    Advance your career as a Senior Developer at Flexspring, focusing on Java and integration technologies. Enjoy a flexible remote work setup while influencing the future of HR data integration solutions. This role as a Senior Research and Development Developer at Flexspring puts you at the forefront of our integration platform's development. You will design,...


  • Ottawa, Ontario, Canada Fullscript Full-time

    Collaborate with your pod — a small, focused team of developers — to build and maintain IAM capabilitiesContribute to the backend codebase with an eye toward reliability, scalability, and securityParticipate in technical design discussions and help break down projects into clear, actionable tasksIdentify and suggest improvements to our authentication and...


  • Ottawa, Canada Sony Interactive Entertainment Full-time €142,000 - €213,000 Contract

    Why Sony Interactive Entertainment? Sony Interactive Entertainment isn’t just the Best Place to Play — it’s also the Best Place to Work. Sony Interactive Entertainment (SIE) is the company behind the PlayStation brand. As a subsidiary of Sony Group Corporation, we’re part of a proud legacy of innovation and excellence. SIE is a dynamic technology...


  • Ottawa Brook, Nova Scotia, Canada Miratech Full-time

    Job Description Job DescriptionCompany Description Miratech helps visionaries change the world. We are a global IT services and consulting company that brings together enterprise and start-up innovation. Today, we support digital transformation for some of the world's largest enterprises. By partnering with both large and small players, we stay at the...


  • Ottawa, ON, Ottawa Census Division, ON; Ontario, Canada Talent Transformation Group Full-time

    We are seeking a senior Java developer to join our team in a full-time employment capacity. This role requires expertise in Java-based systems, along with experience in audio codec integration, VOIP/ROIP protocols, and mission-critical communication systems. The successful candidate will play a key role in the development and enhancement of applications...


  • Ottawa Brook, NS, Victoria County, NS; Nova Scotia, Canada Miratech Full-time

    Job Description Job Description Company Description Miratech helps visionaries change the world. We are a global IT services and consulting company that brings together enterprise and start-up innovation. Today, we support digital transformation for some of the world's largest enterprises. By partnering with both large and small players, we stay at the...