Senior Full Stack Engineer
Company 1 - The Manufacturers Life Insurance Company
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Job summary
Manulife/John Hancock in Waterloo, Ontario is seeking a Senior Full Stack Engineer to design, develop and deliver secure, scalable software across the full stack. You will own features end-to-end, mentor teammates and drive engineering excellence.
You will work with Java, TypeScript, React and cloud platforms, participate in architecture decisions, and contribute to high-quality, user-centered solutions within a collaborative, inclusive environment.
Qualifications
- 5–10 years of experience as a Full Stack Software Engineer with ownership of features through production support.
- Languages and runtimes: Java, TypeScript, JavaScript, Node.js, Python, C#, .NET and SQL.
- Front-end development: React, micro-frontends, enterprise component or design libraries, CSS, Tailwind or SCSS, and React state management and data fetching.
- Integration and APIs: Microservices, REST APIs, OpenAPI, Backend-for-Frontend (BFF) and Azure API Management.
- Data and storage: Microsoft SQL Server, Azure SQL, Azure Cosmos DB or MongoDB, Redis, and Flyway.
- Cloud and platforms: Microsoft Azure, Kubernetes or AKS, Docker and container-based environments.
- Build and CI/CD: Maven or Gradle, npm or pnpm, Git, GitHub and GitHub Actions.
- Testing and quality: JUnit; Jest or Vitest; Playwright or Selenium for end-to-end testing; Bruno or REST Assured for API testing; and SonarQube.
- Security and identity: OAuth 2.0, OIDC, JWT, OWASP secure coding practices, dependency and CVE management tools such as Snyk, and the protection of personally identifiable information.
- Observability: New Relic or Application Insights, structured logging and tracing.
- AI-assisted engineering: GitHub Copilot or an equivalent tool, including prompt and context engineering.
- Experience designing application architecture at the component and service levels and contributing to architectural decisions beyond your own codebase.
- Understanding of Agile and DevOps principles, with development practices that prioritize testing, continuous integration and the rapid, safe release of new features.
- A strong foundation in data structures, algorithms and object-oriented design. Strong written and verbal communication skills, with the ability to clearly articulate technical vision, options and outcomes to varied audiences.
- Next.js and Adobe Experience Manager (AEM).
- Back-end and eventing: Spring Batch, Spring Cloud or Spring Integration, Azure Functions, Azure Event Hubs, Azure Service Bus and JMS.
- Data and analytics: Databricks or Spark, Azure Data Factory, ETL and data pipelines, Azure Storage including Blob Storage or ADLS, KQL and Azure Data Explorer.
- Platform and infrastructure as code: Terraform, Helm or Kustomize, Flux or GitOps, Istio service mesh, Azure Key Vault, and Azure networking, DNS or WAF.
- Legacy integration: z/OS Connect for API enablement, DB2, batch files and SFTP.
- Quality and security tooling: Xray test management and performance or load testing.
- Advanced AI engineering: Agentic development workflows and LLM application patterns.
Responsibilities
- Design, develop, test, deliver, maintain and continuously improve business applications across the full technology stack and throughout the software development lifecycle.
- Design end-user interfaces, databases, APIs and server-side logic while maintaining front-end and back-end components.
- Apply disciplined coding practices, automation and semantic versioning to support agility and high-quality delivery.
- Develop detailed system design specifications that guide system and program development.
- Build automated test harnesses and conduct analysis to ensure solutions meet quality standards and end-user requirements.
- Conduct spikes to reduce technical uncertainty and risk.
- Resolve defects and improve software efficiency, reliability and maintainability.
- Participate in ideation and prototyping to develop creative digital solutions.
- Complete required deployment, maintenance, support and business documentation.
- Participate in peer reviews of code and analysis to promote continuous learning and improvement.
Skills
Tools
Job description
As a Senior Full Stack Engineer, you will help shape solutions, advance strategic initiatives, strengthen our technology footprint and champion strong engineering practices within your team. You will deliver secure, reliable and user-centered solutions that support business objectives. You will translate technical and business requirements into incremental deliverables aligned with business and technology roadmaps.
You will be accountable for outcomes, not only assigned tasks. You will lead medium-sized technical initiatives from end to end, set a high engineering standard within your squad and influence stakeholders beyond it. This role calls for strong technical judgment, initiative and a genuine interest in coaching others and improving engineering quality.
Design, develop, test, deliver, maintain and continuously improve business applications across the full technology stack and throughout the software development lifecycle. Design end-user interfaces, databases, APIs and server-side logic while maintaining front-end and back-end components. Apply disciplined coding practices, established design patterns, automation and semantic versioning to support agility and high-quality delivery.
Develop detailed system design specifications that guide system and program development. Build automated test harnesses and conduct analysis to ensure solutions meet or exceed quality standards and end-user requirements. Conduct investigative spikes to reduce technical uncertainty and risk. Resolve defects and improve software efficiency, reliability and maintainability.
Participate in ideation and prototyping to develop creative digital solutions. Complete required deployment, maintenance, support and business documentation. Participate in peer reviews of code and analysis to promote continuous learning and improvement.
5–10 years of experience as a Full Stack Software Engineer, with demonstrated ownership of features from design through production support. Languages and runtimes: Java, TypeScript, JavaScript, Node.js, Python, C#, .NET and SQL.
Front-end development: React, micro-frontends, enterprise component or design libraries, CSS, Tailwind or SCSS, and React state management and data fetching.
Integration and APIs: Microservices, REST APIs, OpenAPI, Backend-for-Frontend (BFF) and Azure API Management.
Data and storage: Microsoft SQL Server, Azure SQL, Azure Cosmos DB or MongoDB, Redis, and database migration tools such as Flyway.
Cloud and platforms: Microsoft Azure, Kubernetes or AKS, Docker and container-based environments.
Build and CI/CD: Maven or Gradle, npm or pnpm, Git, GitHub and GitHub Actions.
Testing and quality: JUnit; Jest or Vitest; Playwright or Selenium for end-to-end testing; Bruno or REST Assured for API testing; and SonarQube.
Security and identity: OAuth 2.0, OIDC, JWT, OWASP secure coding practices, dependency and CVE management tools such as Snyk, and the protection of personally identifiable information.
Observability: New Relic or Application Insights, structured logging and tracing.
AI-assisted engineering: GitHub Copilot or an equivalent tool, including prompt and context engineering.
Experience designing application architecture at the component and service levels and contributing to architectural decisions beyond your own codebase.
Understanding of Agile and DevOps principles, with development practices that prioritize testing, continuous integration and the rapid, safe release of new features.
A strong foundation in data structures, algorithms and object-oriented design. Strong written and verbal communication skills, with the ability to clearly articulate technical vision, options and outcomes to varied audiences.
Next.js and Adobe Experience Manager (AEM).
Back-end and eventing: Spring Batch, Spring Cloud or Spring Integration, Azure Functions, Azure Event Hubs, Azure Service Bus and JMS.
Data and analytics: Databricks or Spark, Azure Data Factory, ETL and data pipelines, Azure Storage including Blob Storage or ADLS, KQL and Azure Data Explorer.
Platform and infrastructure as code: Terraform, Helm or Kustomize, Flux or GitOps, Istio service mesh, Azure Key Vault, and Azure networking, DNS or WAF.
Legacy integration: z/OS Connect for API enablement, DB2, batch files and SFTP.
Quality and security tooling: Xray test management and performance or load testing.
Advanced AI engineering: Agentic development workflows and LLM application patterns.
We'll empower you to learn and grow the career you want. We'll recognize and support you in a flexible environment where well-being and inclusion are more than just words. As part of our distributed team, we'll support you in shaping the future you want to see.
Manulife Financial Corporation is a leading international financial services provider, helping people make their decisions easier and lives better. To learn more about us, visit https://www.manulife.com/en/about/our-story.html.
Manulife is an Equal Opportunity Employer. At Manulife/John Hancock, we embrace our diversity. We strive to attract, develop and retain a workforce that is as diverse as the customers we serve and to foster an inclusive work environment that embraces the strength of cultures and individuals. We are committed to fair recruitment, retention, advancement and compensation, and we administer all of our practices and programs without discrimination on the basis of race, ancestry, place of origin, colour, ethnic origin, citizenship, religion or religious beliefs, creed, sex (including pregnancy and pregnancy-related conditions), sexual orientation, genetic characteristics, veteran status, gender identity, gender expression, age, marital status, family status, disability, or any other ground protected by applicable law.
It is our priority to remove barriers to provide equal access to employment. A Human Resources representative will work with applicants who request a reasonable accommodation during the application process. All information shared during the accommodation request process will be stored and used in a manner that is consistent with applicable laws and Manulife/John Hancock policies. To request a reasonable accommodation in the application process, contact hr@manulife.com.
Referenced Salary Location Waterloo, Ontario Working Arrangement Hybrid Salary range is expected to be between $113,000.00 CAD - $163,000.00 CAD Employees also have the opportunity to participate in incentive programs and earn incentive compensation tied to business and individual performance. The actual salary will vary depending on local market conditions, geography and relevant job-related factors such as knowledge, skills, qualifications, experience, and education/training. If you are applying for this role outside of the primary location, please contact hr@manulife.com for the salary range for your location.
Manulife offers eligible employees a wide array of customizable benefits, including health, dental, mental health, vision, short- and long-term disability, life and AD&D insurance coverage, adoption/surrogacy and wellness benefits, and employee/family assistance plans. We also offer eligible employees various retirement savings plans (including pension and a global share ownership plan with employer matching contributions) and financial education and counseling resources.
Our generous paid time off program in Canada includes holidays, vacation, personal, and sick days, and we offer the full range of statutory leaves of absence. If you are applying for this role in the U.S., please contact hr@manulife.com for more information about U.S.-specific paid time off provisions.
We use data and analytics technologies, such as artificial intelligence (AI), and automated processing tools, to analyze and process the information you provide to us or third parties in the application process. For more information, please refer to our personal information collection statement.
We're Manulife. And we're on a mission to make decisions easier and lives better. Better is what drives us. It's what inspires us to find new ways to support customers and colleagues in living longer and healthier lives. It's the reason we're dedicated to investing in digital innovation and industry-leading AI, and accelerating a sustainable and economically inclusive future. Joining us means you'll be empowered to learn and grow your career. We'll recognize and support you in a flexible environment where well-being and inclusion are more than just words. And as part of our global team, you'll help shape the future you want to see – and discover that better can take you anywhere you want to go. We're proud of our accomplishments and recognition.
Recent awards include: 2026 Gallup Exceptional Workplace Award Winner Manulife Named one of Forbes World’s Best Employers 2025 Financial Times World’s Best Employers Asia-Pacific 2026 We've been recognized as one of Canada’s Top 100 Employers 2026 #1 Life Insurer for AI Maturity by Evident 2026.
To learn more at https://www.manulife.com/.
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