Senior Software Engineer

We are looking for a
Senior Software Engineer
to join our Affinity Life technology team. In this hands‑on role, you will design, develop, modernize, and support mission‑critical enterprise applications running on IBM z/OS.
You will work at the intersection of proven mainframe technology and modern software engineering, helping evolve critical applications through API integration, automation, DevOps practices, and modernization. You will also play an important role in production support and operational reliability, ensuring our applications remain secure, resilient, performant, and available.
This opportunity is well suited to an experienced engineer who is
able to bridge COBOL/mainframe expertise to modern stack
, enjoys solving complex production issues, and is motivated by modernization, technical collaboration, and mentoring others!
Position Responsibilities:
Design, develop, unit test, and integrate new features and enhancements for enterprise mainframe applications.
Build and maintain solutions using COBOL, JCL, DB2, CICS, and IBM z/OS technologies.
Support mission‑critical production applications, troubleshoot complex issues, perform root‑cause analysis, and improve system reliability, security, resiliency, and performance.
Lead the technical design and implementation of complex backend and mainframe solutions.
Contribute to application modernization, API integration, and connectivity between mainframe applications and distributed systems.
Conduct architecture, design, and code reviews with a focus on scalability, reliability, maintainability, and engineering quality.
Apply modern engineering practices, including automated testing, source control, continuous integration, continuous delivery, and continuous improvement.
Partner with engineering leaders, architects, product owners, software engineers, and business stakeholders to design solutions that deliver meaningful business outcomes.
Promote Agile principles and contribute to quality‑focused engineering practices within the team.
Mentor engineers through technical guidance, knowledge sharing, code reviews, and collaborative problem‑solving.
Maintain clear technical, deployment, operational, maintenance, and support documentation throughout the software development lifecycle.
Required Qualifications
Significant software engineering experience building, maintaining, and supporting enterprise‑scale mainframe applications.
Strong knowledge and/or experience with COBOL, JCL, DB2, CICS, and IBM z/OS.
Experience with VSAM or related mainframe data technologies.
Experience developing and supporting high‑volume, mission‑critical production systems, including incident troubleshooting, performance tuning, root‑cause analysis, and reliability improvements.
Experience with application modernization, API integration, or connectivity between mainframe and distributed systems.
Understanding of Agile development practices and end‑to‑end software development lifecycle delivery.
Experience with source control, CI/CD, and modern mainframe development tools. Familiarity with technologies such as GitHub, Jenkins, Endevor, Zowe, or IBM Developer for z/OS (IDz) is beneficial.
Experience contributing to solution design, technical decision‑making, architecture or code reviews, and engineering quality.
Ability to communicate technical concepts clearly and collaborate effectively with engineering and business stakeholders.
Experience mentoring engineers and sharing technical knowledge across a team.
Preferred Qualifications:
A bachelor’s degree in Computer Science, Engineering, a related discipline, or equivalent practical experience.
Experience contributing to or leading mainframe modernization or digital transformation initiatives.
Experience integrating mainframe applications with distributed platforms using technologies such as REST APIs or z/OS Connect.
Experience with modern mainframe development or AI‑assisted engineering tools, including Zowe, IDz, GitHub integration, or comparable technologies.
Experience working with Life Insurance applications, products, or business processes.
Exposure to mainframe‑to‑cloud integration or migration initiatives.
When you join our team:
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 global team, we’ll support you in shaping the future you want to see.
The role being advertised is an existing vacancy.
Acerca de Manulife y John HancockManulife Financial Corporation es un importante proveedor internacional de servicios financieros que ayuda a las personas a tomar decisiones de una manera más fácil y a vivir mejor. Para obtener más información acerca de nosotros, visite .
Manulife es un empleador que ofrece igualdad de oportunidadesEn Manulife/John Hancock, valoramos nuestra diversidad. Nos esforzamos por atraer, formar y retener una fuerza laboral tan diversa como los clientes a los que prestamos servicios, y para fomentar un entorno laboral inclusivo en el que se aprovechen las fortalezas de las culturas y las personas. Estamos comprometidos con la equidad en las contrataciones, la retención de talento, el ascenso y la remuneración, y administramos todas nuestras prácticas y programas sin discriminación por motivos de raza, ascendencia, lugar de origen, color, origen étnico, ciudadanía, religión o creencias religiosas, credo, sexo (incluyendo el embarazo y las afecciones relacionadas con este), orientación sexual, características genéticas, condición de veterano, identidad de género, expresión de género, edad, estado civil, estatus familiar, discapacidad, o cualquier otro aspecto protegido por la ley vigente.
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Referenced Salary LocationWaterloo, Ontario
Modalidades de TrabajoHíbrido
Salary range is expected to be between$113,000.00 CAD - $163,000.00 CAD
Los empleados también tienen la oportunidad de participar en programas de incentivos y recibir una compensación vinculada al rendimiento empresarial e individual. El salario real variará según las condiciones del mercado local, la geografía y factores relacionados con el puesto como conocimientos, habilidades, requerimientos, experiencia y educación/formación. Si solicitas este puesto fuera de tu ubicación principal, por favor escríbenos a View email address on ca.hrm.tc para conocer el rango salarial correspondiente a tu ubicación.
Manulife ofrece a los empleados aptos una amplia variedad de beneficios personalizables, entre ellos, beneficios de salud, odontológicos, de salud mental, oftalmológicos, por discapacidad a corto y a largo plazo, cobertura de seguro de vida y por muerte accidental y desmembramiento, adopción/subrogación y bienestar, y planes de asistencia al empleado/familiar. También ofrecemos a los empleados admisibles varios planes de ahorro para la jubilación (incluidos planes de pensiones y un plan mundial de propiedad de acciones con contribuciones equivalentes del empleador) y recursos de asesoramiento y educación financiera. Nuestro generoso programa de tiempo libre remunerado en Canadá incluye feriados, vacaciones, días personales y días por enfermedad, y ofrecemos la gama completa de ausencia laboral reglamentaria. Si se está postulando para este puesto en los EE. UU., póngase en contacto con View email address on ca.hrm.tc para obtener más información sobre las disposiciones relativas al tiempo libre remunerado específicas de EE. UU.
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