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 up-to-date 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 up-to-date 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.

マニュライフとジョン・ハンコックについて

マニュライフ・ファイナンシャル・コーポレーションは、「あなたの未来に、わかりやすさを」を提供する、国際的な大手金融サービスプロバイダーです。当社について詳しくは、 https://www.manulife.co.jp/をご覧ください。

マニュライフは機会均等を是とする雇用主です

マニュライフ/ジョン・ハンコックでは、多様性を受け入れます。私たちは、サービス提供先であるお客さまと同様に、多様な人材を引きつけ、育成し、定着させ、文化や個人の力を受け入れる包括的な職場環境を促進するよう努めています。当社は公正な採用、定着、昇進、報酬に努めています。当社のすべての慣行およびプログラムは、人種、祖先、出身地、肌の色、民族的出自、市民権、宗教または宗教的信念、信条、性別（妊娠および妊娠関連の状態を含む）、性的指向、遺伝的特徴、退役軍人としての地位、性自認、性に関する表明、年齢、婚姻状況、家族状況、障害、または適用法で保護されるその他の要因に対する一切の差別を行うことなく管理されます。

雇用への平等なアクセスを提供するために、障壁を取り除くことが当社の優先事項です。人事担当者は、応募者が応募プロセス中に合理的配慮を要求する場合に協力します。配慮要求のプロセス中に共有されるすべての情報は、適用される法律およびマニュライフ/ジョン・ハンコックのポリシーに準拠した方法で保存および使用されます。申請プロセスにおいて合理的配慮を要求するには、 [email protected]までご連絡をお願いします。

Referenced Salary Location

Waterloo, Ontario

Working Arrangement

ハイブリッド勤務

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 [email protected] 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 advantages, 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 [email protected] 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.

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📌 Senior Software Engineer (London)
🏢 Manulife
📍 London