T&T Core Banking Testing Manager - SEA

Date: 17 Jun 2026

Service Line / Portfolios: Enterprise Technology & Performance

Location:

Singapore, Singapore, SG Kuala Lumpur, MY Jakarta, ID Ho Chi Minh City, Ho Chi Minh City, VN Bangkok, TH

Are you ready to unleash your potential? At Deloitte, our purpose is to make an impact that matters for our clients, our people, and the communities we serve.

We believe we have a responsibility to be a force for good, and WorldImpact is our portfolio of initiatives focused on making a tangible impact on society’s biggest challenges and creating a better future. We strive to advise clients on how to deliver purpose-led growth and embed more equitable, inclusive as well as sustainable business practices.

Hence, we seek talented individuals driven to excel and innovate, working together to achieve our shared goals.

We are committed to creating positive work experiences that foster a culture of respect and inclusion, where diverse perspectives are celebrated, and everyone is recognised for their contributions.

Ready to unleash your potential with us? Join the winning team now!

Work you will do This role sits within the Core banking offering, which is a part of the Technology, Strategy & Transformation team of Deloitte Southeast Asia, which focused on design and implementation of core banking platforms across Retail, SME, Commercial and Private Banking.

In this role you shall be responsible for the following:

• Define and lead the end-to-end testing strategy, planning and execution for Temenos Transact implementation projects including timelines, resources, and methodologies.
• Define the overall test approach across SIT, UAT, Regression, Performance, and Cutover Validation, ensuring comprehensive coverage of functional and non-functional requirements.
• Oversee the development and maintenance of test scenarios, scripts, traceability matrices, and defect management processes.
• Lead execution of planned test cases, ensuring that all test results are correctly recorded against the system
• Prepare & present testing reports, incl test results, defect analysis and lead defect triage and resolution
• Regularly update stakeholders, including project managers, IT teams, and business units, on testing progress, risks, and outcomes
• Manage test environments, test data setup, and integration points with upstream/downstream systems.
• Lead a team of testers (onsite and offshore) and ensure adherence to quality standards, timelines, and program objectives.
• Establish and track testing KPIs, prepare status dashboards, and provide regular updates to senior stakeholders.
• Work closely with the Delivery team to align testing milestones with release plans and ensure quality assurance gates are met.
• Establish and implement a test automation framework aligned with the technology stack and DevOps pipeline.
• Identify key regression suites and automation candidates early, to integrate automated tests into CI/CD pipelines.
• Oversee development and execution of automation scripts using tools such as Selenium, Tosca, Karate, Postman (for APIs), JMeter, etc.
• Identify and implement opportunities to deploy AI solutions to improve the efficiency and effectiveness of testing
• Ensure compliance with audit, risk, and regulatory requirements relevant to core banking systems

You will also get a chance to collaborate with our global network where we have delivered truly transformational large scale programs for clients in this domain.

Your role as a leader At Deloitte, we believe in the importance of empowering our people to be leaders at all levels. We connect our purpose and shared values to identify issues as well as to make an impact that matters to our clients, people and the communities. Additionally, Managers across our Firm are expected to:

• Develop diverse, high-performing people and teams through