Senior Software Engineer

Key Responsibilities

1. System Development and Project Delivery

. Provide technical leadership for the successful implementation of large-scale or mission-critical systems from conception through delivery and operational handover.

. Contribute to software work planning, estimation, task allocation, dependency management and technical risk management track engineering progress and escalate delivery concerns early.

. Coordinate software activities across internal teams, subcontractors, product vendors and customer stakeholders to achieve agreed scope, quality and schedule objectives.

. Lead or support system integration, Factory Acceptance Testing (FAT), User Acceptance Testing (UAT), production deployment, commissioning and go-live activities, including on-site troubleshooting where required.

. Ensure implementation evidence, technical documentation, configuration records and operational handover materials are complete and fit for purpose.

2. Application Development and Integration

. Design, develop, enhance and maintain C# .NET applications and RESTful APIs for secure data exchange between core systems and third-party government or vendor platforms.

. Implement complex software designs as production-quality code, including error handling, logging, auditability, security controls, performance optimisation and automated testing where applicable.

. Lead the integration of applications with cloud-native services, enterprise platforms, real-time systems and hardware-software interfaces where required.

. Diagnose and resolve complex application, interface and performance issues across multiple system components.

3. Code Quality and Engineering Governance

. Conduct code, design and pull-request reviews to ensure correctness, maintainability, testability, security and adherence to coding standards and engineering best practices.

. Establish or improve coding guidelines, branching strategies, reusable components, development practices and Definition of Done for the engineering team.

. Promote secure software development, configuration management, version control, CI/CD, automated build and deployment practices.

. Identify technical debt and recommend pragmatic remediation plans that balance operational risk and delivery priorities.

5. Data, Analytics and Database Engineering

. Design, optimise and maintain complex Microsoft SQL Server queries, stored procedures, triggers and database objects to support performance, data integrity and availability under mission-critical conditions.

. Provide technical oversight for data models, database changes, migration activities, reconciliation and troubleshooting.

. Where required, develop or guide end-to-end Power BI solutions, including Power Query, data modelling, DAX measures and real-time dashboards for operational monitoring and management reporting.

6. Testing, Deployment and Operational Support

. Define the software approach for unit, integration, system and regression testing, and work with testing teams to ensure adequate coverage and timely defect resolution.

. Guide release readiness assessments, deployment planning, rollback planning and production verification.

. Lead complex incident investigations and root cause analysis identify corrective and preventive actions to improve system stability and availability.

. Support compliance with public-sector service levels, cybersecurity requirements, change controls and operational procedures.

8. Customer and Stakeholder Engagement

. Engage customers and end users to clarify requirements, explain technical options, demonstrate solutions and address implementation concerns.

. Communicate technical matters clearly to project managers, architects, engineers, testers, vendors and non-technical stakeholders.

. Prepare and maintain solution designs, interface specifications, deployment guides, troubleshooting procedures and other project documentation.

Key Skills/ Experience/ Qualifications

. Degree in Computer Science, Software Engineering, Information Technology or a related discipline, or equivalent practical experience.

. Typically 8 or more years of hands-on software development experience, including substantial experience in enterprise, large-scale or mission-critical environments.

. Demonstrated experience successfully implementing at least one large-scale system or project through design, development, integration, testing, deployment and operational handover.

. Proven experience providing technical leadership to software engineers, including work planning, design guidance, code review, troubleshooting and mentoring.

. Strong proficiency in C# and .NET Core and/or .NET Framework, with sound knowledge of object-oriented design, asynchronous programming, software design patterns and application performance.

. Hands-on experience designing, developing and consuming RESTful APIs using JSON and/or XML, with knowledge of authentication, authorisation, API security, error handling and interface versioning.

. Strong knowledge of Microsoft SQL Server and T-SQL, including schema design, complex queries, stored procedures, performance tuning, data integrity and database troubleshooting.

. Alternatively or additionally, proven Power BI experience involving Power Query, semantic/data modelling, DAX and operational or management dashboards.

. Experience with Git-based version control, code review practices, CI/CD pipelines, automated build and deployment, and release/configuration management.

. Experience with Microsoft Azure or Government Commercial Cloud, including integration with relevant cloud-native services.

. Working knowledge of Agile, Scrum or hybrid delivery methods and large-scale testing cycles such as FAT and UAT.

. Strong analytical, troubleshooting, estimation, documentation, communication and stakeholder-management skills.

. Experience in real-time systems, complex system integration, distributed applications or hardware-software interfacing is advantageous.

. Experience working with Singapore Government agencies or statutory boards, and familiarity with public-sector ICT governance, security and compliance requirements, is advantageous.