Top Java Developer Jobs in Ottawa

Reposted 3 Days AgoSaved
In-Office
Ottawa, ON
Junior
Junior
Artificial Intelligence • Information Technology • Software • Consulting • Automation
The Java Developer will be responsible for developing web-based applications, using Java and related technologies, while collaborating within the team.
Top Skills: AngularjsExtjsJ2EeJavaJavaScriptJbossOracleSpring Framework
9 Days AgoSaved
In-Office or Remote
Ottawa, ON
Senior level
Senior level
Blockchain • Fintech • Software • Cryptocurrency • Metaverse
Design, develop, and maintain high-performance, secure Java backend services and APIs. Ensure reliability, scalability, and cost-efficiency across microservices, databases, messaging systems, and capacity planning. Troubleshoot, profile, benchmark, and optimize systems (including ML applications) and collaborate with Kazakhstan stakeholders.
Top Skills: Apache (Open-Source Projects)BenchmarkingJavaKafkaLinuxMachine LearningMicroservicesNoSQLProfilingRabbitMQRestful ApisSpring BootSQL
Reposted 3 Days AgoSaved
In-Office
Ottawa, ON
Mid level
Mid level
Information Technology • Consulting
Seeking a Java Back-End Engineer for enterprise applications, requiring strong Java and J2EE experience, RDBMS, and secure coding knowledge.
Top Skills: J2EeJavaNoSQLSQL
YesterdaySaved
Remote
Ottawa, ON
Senior level
Senior level
Artificial Intelligence • Software
Senior Java engineer responsible for architecture and delivery of high‑scale, cloud‑native platform capabilities. Lead system design, implement critical Java components, drive observability and deployment practices, apply AI‑assisted engineering, produce architecture docs, mentor/hire, and collaborate cross‑functionally to ensure performance, reliability, and long‑term maintainability.
Top Skills: Agentic Ai ToolsAWSAzureBlue/Green DeploymentsCanary ReleasesClaude Code (Anthropic)Codex (Openai)CqrsDistributed TracingEvent SourcingGCPGrpcIamJavaJava.Util.ConcurrentJweJwsJwtMessagingMetricsNioNio2Prompt EngineeringRestRolling UpdatesSagasSli/Slo/SlaSpringSpring BootStructured LoggingTerraformTwo-Phase CommitVpc
2 Days AgoSaved
Remote
Ottawa, ON
Senior level
Senior level
Fintech • Financial Services
Design, develop, and maintain Java-based distributed applications for Par Loan Trading. Lead feasibility, design, testing, implementation, and post-implementation support. Mentor junior analysts, recommend security measures, consult with stakeholders, and ensure compliance with policies and risk controls.
Top Skills: DockerGitJavaKafkaMssqlOpenshiftOraclePl/SqlSolaceSpringSpring BootSQLTibco EmsUnix/Linux
3 Days AgoSaved
Remote
Ottawa, ON
Mid level
Mid level
Cloud • Information Technology • Professional Services • Software
Design, build, and maintain frontend interfaces and backend services; modernize legacy Spring MVC/JSP architecture; optimize backend performance and databases; build secure REST APIs; configure automated job scheduling; troubleshoot cross-platform issues to ensure platform reliability and scalability.
Top Skills: AjaxApache TomcatBitbucketBootstrap 4DatatablesEclipselinkGitJavaJdbc TemplateJIRAJpaJqueryJspJstlLdapMicrosoft Sql ServerOktaRestful ApisSpring FrameworkSpring JdbcSpring MvcSpring Security
Reposted 3 Days AgoSaved
In-Office or Remote
Ottawa, ON
Senior level
Senior level
Blockchain • Software • Cryptocurrency
The Senior Java Engineer will design complex systems, optimize performance, maintain code quality, and ensure application reliability. Responsibilities include translating requirements into applications and troubleshooting issues.
Top Skills: JavaKafkaMongoDBMySQLPrometheusRedisSpring Boot
Reposted 3 Days AgoSaved
Remote
Ottawa, ON
Senior level
Senior level
Cloud • Security • Software • Generative AI
The Senior Java Developer will enhance Elasticsearch's distributed systems, maintain high performance, and solve complex problems related to data indexing and coordination across multiple machines.
Top Skills: ElasticsearchJavaNetty
Reposted 5 Days AgoSaved
Remote
Ottawa, ON
Senior level
Senior level
Software
As a Senior Software Engineer, you will develop high-quality software applications, mentor teams, and drive project deliveries while collaborating with various stakeholders.
Top Skills: AngularAWSAzureCSSDockerGitHibernateHTMLJavaJavaScriptJpaKubernetesRest Web ServicesSpringSpring BootSQLTypescript
9 Days AgoSaved
In-Office or Remote
Ottawa, ON
Senior level
Senior level
Blockchain • Fintech • Software • Cryptocurrency • Metaverse
Design, develop, and optimize high-performance Java backend systems. Contribute to architecture, implement core modules, troubleshoot production issues, perform code reviews, and improve scalability, availability, and reliability of distributed financial or blockchain systems.
Top Skills: BlockchainCachingCryptoDistributed SystemsJavaMessagingMybatisNoSQLSpringWeb3
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9 Days AgoSaved
Remote
Ottawa, ON
Senior level
Senior level
Agency • Information Technology
Senior Java Big Data Developer with 8+ years building applications on Cloudera/Hadoop ecosystems using Spark and MapReduce. Responsible for designing performant Java (1.8+) solutions, data analysis of large datasets, unit testing (JUnit), and collaborating with/managing global technology teams. Preferred skills include Unix/Python scripting and familiarity with Hive, Impala, YARN, and Kafka.
Top Skills: SparkClouderaHadoopHiveImpalaJava 1.8JunitKafkaMapreduceNoSQLPythonUnix ShellYarn
Reposted 10 Days AgoSaved
Remote
Ottawa, ON
Senior level
Senior level
Artificial Intelligence • Information Technology • Machine Learning • Software • Virtual Reality • Analytics
Seeking a Senior Engineer with 5+ years in Java, familiar with Spring, microservices, and agile principles to solve client challenges.
Top Skills: CSSDockerGitlab CiHibernateHTMLJavaJavaScriptJenkinsSpring BootSpring Core
Reposted 10 Days AgoSaved
Remote
Ottawa, ON
Senior level
Senior level
Artificial Intelligence • Information Technology • Machine Learning • Software • Virtual Reality • Analytics
We're looking for a Staff Engineer with 5+ years of experience in Java and full-stack development to tackle challenges and lead solutions.
Top Skills: AngularCSSDockerGitlab CiHibernateHTMLJavaJavaScriptJenkinsReactSpring BootSpring Core
Reposted 17 Days AgoSaved
Remote
Ottawa, ON
Senior level
Senior level
Fintech • Financial Services
Responsible for designing and developing web applications using Java/Spring/Hibernate, collaborating with stakeholders, and leading platform technology improvements within Citi's Financing and Securitization team.
Top Skills: AngularHibernateJavaJenkinsJmsKafkaMongoDBPl/SqlSonarqubeSpringSQLTeamcity
Reposted 17 Days AgoSaved
Remote
Ottawa, ON
Senior level
Senior level
Database • Analytics
As a Senior Software Engineer, you will build and maintain data framework integrations for ClickHouse, focusing on high-performance database and developer experience. You will manage full lifecycle integrations, ensuring scalability and reliability for real-time data processing and analytics.
Top Skills: Apache BeamApache FlinkSparkJavaJdbcJvmKafkaSQL
Reposted 17 Days AgoSaved
Remote
Ottawa, ON
Senior level
Senior level
Cloud • Security • Cybersecurity
As a Backend Software Engineer, you will enhance detection engines and analysis systems, focusing on scalable distributed systems and analyzing mobile applications' behavior and risks.
Top Skills: AWSElasticsearchGCPJavaRubyScalaTinkerpop
Reposted 18 Days AgoSaved
In-Office or Remote
Ottawa, ON
Senior level
Senior level
Security • Software
The Staff Software Engineer will design, develop, and maintain scalable cloud-based solutions, manage data ingestion and retrieval, and lead architectural innovation while collaborating with cross-functional teams.
Top Skills: JavaKafkaKotlinKubernetes
19 Days AgoSaved
In-Office or Remote
Ottawa, ON
Expert/Leader
Expert/Leader
Information Technology • Professional Services • Sales • Consulting
Design, develop, test and maintain enterprise Java applications and integrations for a digital permitting platform. Implement microservices, REST/SOAP services, Azure-enabled CI/CD deployments, IBM ODM/BAW integrations, WebSphere/Liberty hosting, PL/SQL data work, AODA-compliant UIs, OpenShift container deployments, and support multi-environment releases in Agile teams.
Top Skills: AngularAzureCi/CdDockerEjbEnterprise Content ManagementIbm Business Automation Workflow (Baw)Ibm Operational Decision Manager (Odm)ItextJavaJpaKanbanLibertyMicroservicesNode.jsOpenshiftPdf GenerationPl/SqlRestSoapSpring BootVelocityWebsphere
24 Days AgoSaved
Remote or Hybrid
Ottawa, ON
Senior level
Senior level
Fintech • Financial Services • Cryptocurrency • NFT • Web3
Design, develop, and implement microservice-based components for a derivatives exchange trading platform. Collaborate with product, security, and DevOps teams to optimize products/models, perform code audits, build automated tests and CI/CD pipelines, troubleshoot backend infrastructure, and manage releases and documentation.
Top Skills: Automated TestingCi/CdContinuous IntegrationDevOpsJavaMicroservicesTdd
Reposted 24 Days AgoSaved
Remote
Ottawa, ON
Senior level
Senior level
Fintech • Payments • Financial Services
The Java Back-End Developer will build and maintain backend applications, ensuring system reliability, collaborating with teams, conducting code reviews, and mentoring juniors.
Top Skills: AngularAWSCi/CdDockerFlywayGitGpcGradleJava 8JpaMavenMvcNginxPostmanReact JsSpringSpring BootSpring SecuritySQLSwagger
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