Senior Java Developer Jobs in Whitby, ON (NOW HIRING)

Individually we are people, but together we are Aviva. Individually these are just words, but together they are our Values - Care, Commitment, Community, and Confidence.

At Aviva Canada, we put people first, our employees, our customers, and our communities. We're proud of a culture built on care, inclusion, and collaboration, where your voice matters and your growth is supported. We're not just about insurance; we're about making a real difference by protecting what matters most.

We are seeking a Full stack Developer with strong backend expertise to design, develop, and govern enterprise-grade applications. This role emphasizes Java 17/21 and Spring Boot 3.x, Angular/React microservices architecture, and AWS cloud deployment, while ensuring compliance with technical standards, governance, risk management, and driving continuous improvement.

What you'll do

Backend Development (Primary Focus):

• Build scalable, high-performance RESTful APIs using Java 17/21 and Spring Boot 3.x.

• Architect and implement microservices with Spring Cloud (Gateway, Config, Discovery).

• Implement security using Spring Security 6.x (OAuth2, JWT, RBAC), with structured logging and robust error handling.

• Design and optimize schemas; tune queries with Spring Data JPA/Hibernate 6.x for NpSql DB.

• Apply caching (Redis/Caffeine) where needed.

• Write unit/integration tests (JUnit 5, Mockito, Testcontainers) and ensure performance/availability (health checks, DR).

• Drive technical governance, code quality, and adherence to architecture standards; lead root-cause analysis for production incidents.

Frontend Development:

• Develop responsive UIs with Angular 17+ or React, TypeScript 5.x, HTML5, SCSS, and Material UI.

• Integrate backend APIs; handle async workflows with RxJS and adopt state management (NgRx or Signals).

• Ensure UI quality with unit tests (Jest/Jasmine) and e2e tests (Cypress).

Cloud & DevOps:

• Deploy and operate on AWS (ECS, EC2, S3, Lambda, API Gateway, Cloudfront, CloudWatch).

• Implement CI/CD (Jenkins/GitLab CI/AWS CodePipeline) and containerization with Docker.

• Use IaC (CloudFormation/Terraform); monitor and optimize cost/performance.

Collaboration & Best Practices:

• Participate in code reviews; maintain coding standards and clear technical documentation.

• Collaborate with Product, Design, QA; work in Agile/Scrum and contribute to roadmap/architecture.

• Champion continuous improvement and process innovation to drive quality and efficiency.

What you'll bring

• Expert-level Java 17/21 & Spring Boot 3.x; deep Spring ecosystem (MVC, Data JPA, Security 6.x).

• Strong microservices architecture with Spring Cloud; REST API design best practices.

• RDBMS expertise (PostgreSQL/MySQL); ORM and query optimization; NoSQL (MongoDB/DynamoDB) a plus.

• Messaging (Kafka, RabbitMQ, AWS SQS/SNS); WebFlux/reactive knowledge preferred.

• Frontend: Angular 17+, TypeScript; RxJS/Signals; modern build tooling.

• Cloud & Infra: AWS hands-on, Docker; Git; CI/CD practices.

• Experience: 2-4 years professional Java backend development building production systems.

• Soft skills: problem-solving, debugging, communication, teamwork.

Preferred Qualifications:

• AWS certifications; Kubernetes/ECS; GraphQL; Serverless (Lambda).
• Monitoring (CloudWatch/New Relic/Datadog); Elasticsearch; Redis/caching.
• Understanding of distributed systems and microservice patterns.

What makes you stand out:

• Proactive 'can do' attitude; strong verbal and written communication with IT and Business stakeholders.

• In-depth platform experience with practical experience gained over at least a 10 year period.

• Significant knowledge of Application Support and Development processes and techniques including CI, TDD, BDD.

• Propose innovative solutions or alternative approaches to difficult issues.

• Proven record in delivering technical solutions across run and/or change within this Platform.

• Experience working with Global Sourcing partners and developing solutions which improve the customer experience.

• Proven knowledge of Technical platforms, software engineering practices and system management methodologies.

What you'll get

• The salary band for this position ranges from $120,000 to $145,000. Please note that individual salary is determined by factors such as job-related knowledge, skills and experience, as well as internal equity.

• Compelling rewards package including base compensation, eligibility for annual bonus, retirement savings, share plan, health benefits, personal wellness, and volunteer opportunities.

• Outstanding Career Development opportunities.

• We'll support your professional development education.

• Competitive vacation package with the option to purchase 5 extra days off per year.

• Employee driven programs focused on gender, LGBTQ+, origins, diversity, and inclusion.

• Corporate wellness programs to support our employees' physical and mental health.

• Hybrid flexible work model.

This job advertisement is for an existing vacancy which has been posted both internally & externally.

Aviva Canada may use AI (Artificial Intelligence) tools to assist us throughout the recruitment process to screen, assess or select applicants for a position.

Aviva Canada welcomes applications from all qualified individuals and has a process in place to provide accommodations for persons with disabilities at all stages of the hiring process and during employment. If you require an accommodation during the interview or hiring process, please contact your Aviva Talent Acquisition Partner so that an appropriate accommodation can be arranged.

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