Senior Mobile Software Engineer

About the Role
As a Senior Mobile Software Engineer within our US Retirement technology organization, you will design, build, and deliver high-quality mobile and backend solutions for our Retirement customers. Working across the full stack, you will develop React Native applications and NestJS services, contribute to architectural decisions, and help elevate engineering standards. You will partner closely with Product Owners, UX Designers, architects, and engineers to deliver impactful digital experiences.
Key Responsibilities
Design, develop, test, and maintain full-stack features across React Native mobile apps and Node.js backend services
Contribute to system architecture and technical design, including APIs, data models, caching strategies, and service decomposition
Write clean, well-tested, production-ready TypeScript across mobile and backend codebases
Build performant, accessible mobile experiences using React Native, Expo, React Query, and Uniwind
Develop and maintain backend services integrated with Azure Kubernetes Service (AKS) and Redis
Participate in architecture reviews, propose solutions, and document design decisions
Enhance CI/CD pipelines using GitHub Actions to support fast, reliable deployments
Implement observability with New Relic to monitor and optimize application performance
Mentor engineers through code reviews, pairing, and knowledge sharing
Collaborate with product and design teams to translate requirements into scalable technical solutions

Required Qualifications
5+ years of experience in full-stack software development
Strong proficiency in TypeScript across frontend and backend
Hands-on experience with React Native and Expo
Experience with React Query (TanStack Query) for state management and data fetching
Backend development experience with Node.js
Working knowledge of Redis (caching, queues, session management)
Experience with Azure cloud services, including AKS
Familiarity with GitHub Actions for CI/CD
Experience with New Relic or similar observability tools
Demonstrated ability to make architectural decisions (API design, scalability, performance)
Strong understanding of testing strategies (unit, integration, E2E)
Excellent communication and ability to articulate technical trade-offs

Architecture & Technical Leadership
Contribute to and drive architectural decisions for mobile and backend systems
Design scalable APIs and services to support evolving business needs
Identify and address technical debt, performance issues, and reliability risks

Nice to Have
Experience with Tailwind or Uniwind (utility-first CSS frameworks)
Knowledge of mobile security and secure storage practices
Familiarity with Kubernetes networking, Istio, or service mesh patterns
Experience with event-driven architectures or message queues
Contributions to open-source projects

The role being advertised is an existing vacancy.

About Manulife and John Hancock

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

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 .

Referenced Salary Location
CAN, Ontario, Waterloo, 500 King Street North
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 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 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.