senior java api developer jobs in Ottawa

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2,724 senior java api developer job listings in Canada. Find daily updated positions from leading job boards.


  • Ottawa, ON, Ottawa Census Division, ON; Ontario, Canada Tek Tron IT Full-time

    Backend Development Design, develop, and maintain RESTful APIs and microservices using Java, Spring, Spring Boot, and related frameworks. Implement business logic, security, performance optimization, and data persistence layers. Integrate third‐party APIs, services, and messaging systems (Kafka, RabbitMQ, etc.). Frontend Development Develop...


  • Ottawa, ON, Canada Cognizant Full-time

    About the roleAs a Senior Full Stack Developer, you will make an impact by designing, developing, enhancing, and supporting scalable enterprise applications that enable critical business capabilities. You will be a valued member of the engineering team and work collaboratively with architects, product owners, business stakeholders, and cross-functional Agile...


  • Ottawa, Ontario, Canada Tek Tron IT Full-time

    Backend DevelopmentDesign, develop, and maintain RESTful APIs and microservices using Java, Spring, Spring Boot, and related frameworks.Implement business logic, security, performance optimization, and data persistence layers.Integrate third‐party APIs, services, and messaging systems (Kafka, RabbitMQ, etc.).Frontend DevelopmentDevelop responsive UI...


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

    Build scalable cloud-native applications at Miratech using Java, Spring Boot, React, and TypeScript across enterprise technology projects. This hands-on role supports digital transformation for global clients. As a Senior Full Stack Engineer, you will own features from technical design through production support. Your work spans backend services,...


  • 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,...


  • Ottawa, ON, Canada Veem Inc. Full-time €90,000 - €120,000 Contract

    Build scalable Java payment services at Veem in Ottawa, working hybrid with two onsite days each week. Apply REST API expertise daily. As a senior Back End Engineer, you will help deliver Veem’s global payments platform. The work includes Java development, scalable systems, distributed microservices, and AWS. You will design fund flows, support payment...


  • Ottawa, Ontario, Canada Miratech Group Full-time

    Build scalable cloud-native applications at Miratech using Java, Spring Boot, React, and TypeScript across enterprise technology projects. This hands-on role supports digital transformation for global clients.As a Senior Full Stack Engineer, you will own features from technical design through production support. Your work spans backend services, responsive...


  • Ottawa, Canada Manulife Full-time €113,000 - €163,000 Contract

    Use Java, React, and TypeScript to deliver reliable software as a Senior Full Stack Engineer in Manulife’s hybrid Waterloo workplace. This senior position spans front-end and back-end development throughout the software development lifecycle. You will design end-user interfaces, databases, APIs, and server-side logic while translating requirements into...


  • Ottawa, Ontario, Canada SA TECHNOLOGIES Full-time

    Advance your career with SA Technologies Inc. as a Java/J2EE Developer. This full-time position emphasizes developing sophisticated web applications using Java technologies across multiple platforms. As a Java/J2EE Developer, you will apply your knowledge of application development and technical frameworks in a client-focused environment. With a minimum of...


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

    We are seeking an experienced Senior Java Developer to support a federal government initiative focused on strengthening Canada's cybersecurity capabilities. You'll contribute to the development, enhancement, and modernization of enterprise applications, including the transition of an existing cybersecurity analytics platform. Working with technologies such...


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

    Senior Software Engineer - Java Join to apply for the Senior Software Engineer - Java role at Veeva Systems . 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...


  • Ottawa, Ontario, Canada Altis Full-time

    We are seeking an experienced Senior Java Developer to support a federal government initiative focused on strengthening Canada's cybersecurity capabilities. You'll contribute to the development, enhancement, and modernization of enterprise applications, including the transition of an existing cybersecurity analytics platform. Working with technologies such...


  • Ottawa, ON, Ottawa Census Division, ON; Ontario, Canada Miratech Group 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, ON, Ottawa Census Division, ON; 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 Veeva Systems Full-time

    Senior Software Engineer - Java Join to apply for the Senior Software Engineer - Java role at Veeva Systems. 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...


  • Ottawa, ON, Canada Miratech Group Full-time €110,000 - €150,000 Contract

    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, ON, Ottawa Census Division, ON; Ontario, Canada HillView Consulting Full-time

    Description Hillview Consulting is looking for a Java Full Stack Developer to join our team on‐site in Ontario. This contract position provides an excellent opportunity to work within the Staffing and Recruiting industry, where you'll be instrumental in developing robust applications that cater to the evolving needs of our clients. In this role, you...


  • 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 Myticas Consulting Full-time

    Lead OC Transpo’s Barcode API integration from Ottawa or remotely, applying complex infrastructure and stakeholder management experience. Part-time work supports event fare access.This Senior Project Manager supports OC Transpo’s Event Fare Integration Program. The work involves partner engagement, technical integration guidance, project planning,...


  • 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...