Top Java Developer Jobs in Ottawa

Develops and tests software for a next-generation 911 call-handling platform under senior guidance. Responsibilities include software analysis, design, development, documentation, system integration, validation, unit testing, and exploratory testing. The role uses Java, Angular, JavaScript, Git, Agile practices, and potentially cloud, DevOps, networking, and container technologies to support highly available on-premises or service-based emergency communications solutions.

Design, build, and maintain scalable web applications using Angular, TypeScript, and Java. Own features from technical design through production, contribute to architecture decisions, review code, mentor developers, write unit tests, and collaborate with design, QA, engineering, and product stakeholders. Apply AI-assisted development tools to improve productivity and code quality.

Designs, develops, tests, deploys, documents, and supports enterprise-scale Java applications in a multi-client environment. Responsibilities include Oracle E-Business Suite customizations, REST services, microservices, database development, ETL, implementation support, troubleshooting, unit testing, technical documentation, and SDLC collaboration. The role requires extensive Java, Oracle, SQL, PL/SQL, Azure DevOps, and software architecture experience, plus strong knowledge of financial modules and technical quality assurance.

Leads the architecture, development, modernization, and deployment of scalable Java enterprise applications and cloud-native microservices. Provides technical leadership and mentorship, drives Kafka-based event systems, Oracle persistence, REST APIs, containerization, CI/CD, automated testing, observability, performance tuning, and secure software governance. Partners with product, project, DevOps, and architecture teams while guiding agile delivery and adopting AI-assisted engineering tools.

Develop scalable Java Spring Boot APIs, microservices, React-based interfaces, ETL pipelines, and SQL data solutions. Deploy workloads on AWS, optimize performance, implement monitoring and automation, and collaborate with product, frontend, data, and DevOps teams. The role also contributes to architecture, accessibility, reliability, and data-driven product improvements.

Develop and lead Java applications for futures risk management and trading platforms. Responsibilities include designing integrations, resolving complex technical problems, defining coding and testing standards, ensuring architectural alignment, analyzing business and system processes, and coaching developers. The role requires expertise in Core Java, multithreading, Spring, REST APIs, messaging, databases, containers, and front-office trading technology.

Design, develop, test, and maintain Java-based enterprise applications and scalable REST APIs/microservices using Spring Boot. Work with relational databases, unit/integration tests, CI/CD, version control, and participate in Agile ceremonies. Support cloud deployments, debugging, code reviews, and collaborate with cross-functional teams.

Develop and support Java applications for fixed-income trading technology. Responsibilities include requirements analysis, system design, development, testing, implementation, production support, risk assessment, security measures, user consultation, and process definition. The role requires expertise in distributed web applications, Spring-based frameworks, containers, virtualization, real-time messaging, and database technologies, while serving as a subject matter expert and coach to junior analysts.

Seeking a Java Back-End Engineer for enterprise applications, requiring strong Java and J2EE experience, RDBMS, and secure coding knowledge.

The Java Developer will be responsible for developing web-based applications, using Java and related technologies, while collaborating within the team.

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.

Lead development of internal tools and platforms that improve engineering productivity and developer experience. Design, build, deploy, and optimize scalable web applications and cloud services using Java, Spring, Angular, React, and OpenShift. Collaborate with stakeholders, implement microservices and REST solutions, establish automated testing and deployment practices, and provide technical leadership for platform improvements. The role also involves monitoring, debugging, tuning, and maintaining highly reliable enterprise applications.

The Senior Full Stack Developer will build features for a data security platform, focusing on microservices, code quality, and security best practices while leveraging AI tools for development efficiency.

Develop and maintain secure, scalable Java backend applications and integrations. Design RESTful services, troubleshoot production issues, improve performance and reliability, apply secure coding practices, and collaborate with UI and business stakeholders. The role includes monitoring systems, conducting code reviews, supporting incident postmortems, and mentoring junior developers within an Agile engineering team. This is a hybrid position based in Etobicoke, Ontario, requiring two office days per week.

Design, develop, and maintain scalable Java backend services using Spring/Spring Boot and microservices. Participate across the full SDLC, implement TDD and CI/CD practices, deploy and manage software, work in Agile/Scrum, mentor engineers, and provide hands-on problem solving to meet deadlines and business requirements.

Design, implement, and maintain Elasticsearch distributed-systems components to ensure scalable, performant, and resilient indexing, coordination, replication, and cluster communication. Diagnose and fix concurrency and performance issues, push scalability limits, and lead projects end-to-end while supporting support engineers and mentoring engineers across multi-node deployments.

Lead development of core Elasticsearch infrastructure and shared platform features. Design scalable APIs, solve performance and concurrency issues, improve observability and CI/CD, support cross-team projects, and own operational investigations end-to-end.

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.

Seeking a Senior Engineer with 5+ years in Java, familiar with Spring, microservices, and agile principles to solve client challenges.

Administer, monitor, and support Java applications and Genesys Cloud. Provide production troubleshooting, minor bug fixes and enhancements, and act as primary POC for Java apps. Develop/support microservices using Java and Spring Boot, perform analysis of system behavior, and apply problem-solving and diagnostics to maintain service quality.