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I'm a seasoned IT professional with 30+ years of enterprise system expertise and over 20 years delivering mission-critical solutions, including managing UAT in the telecoms sector. I'm highly skilled in SQL-based data validation, defect analysis, and production readiness, with strong knowledge of risk-control logic and customer profile evaluation. I've worked across the full SDLC and across cross-system integration, backed by proven stakeholder management that ensures seamless alignment between business requirements and technical execution. I enjoy leading teams, driving quality, and delivering reliable, scalable systems.…I'm a seasoned IT professional with 30+ years of enterprise system expertise and over 20 years delivering mission-critical solutions, including managing UAT in the telecoms sector. I'm highly skilled in SQL-based data validation, defect analysis, and production readiness, with strong knowledge of risk-control logic and customer profile evaluation. I've worked across the full SDLC and across cross-system integration, backed by proven stakeholder management that ensures seamless alignment between business requirements and technical execution. I enjoy leading teams, driving quality, and delivering reliable, scalable systems.

Xian Long Jin

Project Manager, Full Stack Developer, Programmer, +4

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I'm a seasoned IT professional with 30+ years of enterprise system expertise and over 20 years delivering mission-critical solutions, including managing UAT in the telecoms sector. I'm highly skilled in SQL-based data validation, defect analysis, and production readiness, with strong knowledge of risk-control logic and customer profile evaluation. I've worked across the full SDLC and across cross-system integration, backed by proven stakeholder management that ensures seamless alignment between business requirements and technical execution. I enjoy leading teams, driving quality, and delivering reliable, scalable systems.…I'm a seasoned IT professional with 30+ years of enterprise system expertise and over 20 years delivering mission-critical solutions, including managing UAT in the telecoms sector. I'm highly skilled in SQL-based data validation, defect analysis, and production readiness, with strong knowledge of risk-control logic and customer profile evaluation. I've worked across the full SDLC and across cross-system integration, backed by proven stakeholder management that ensures seamless alignment between business requirements and technical execution. I enjoy leading teams, driving quality, and delivering reliable, scalable systems.

Available to hire

I’m a seasoned IT professional with 30+ years of enterprise system expertise and over 20 years delivering mission-critical solutions, including managing UAT in the telecoms sector. I’m highly skilled in SQL-based data validation, defect analysis, and production readiness, with strong knowledge of risk-control logic and customer profile evaluation.

I’ve worked across the full SDLC and across cross-system integration, backed by proven stakeholder management that ensures seamless alignment between business requirements and technical execution. I enjoy leading teams, driving quality, and delivering reliable, scalable systems.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Work Experience

Technical Lead at Infosys Ltd Singapore

April 1, 2020 - November 1, 2025

Led the full SDLC for CRM systems, from requirements gathering through production deployment and maintenance; Designed and implemented major modules of the Telco Billing system; Built data query and reporting solutions; Established UAT framework with risk-based test coverage to validate business requirements; Led daily software development activities and ensured delivery alignment with product goals; Managed sprint planning, backlog grooming, and agile ceremonies; Improved deployment quality and reduced production risk through strengthened practices; Collaborated with customer service, billing and finance teams to align system functionality with operational needs and ensure accurate delivery.

Software Manager at Singtel

February 1, 1992 - November 1, 1997

Supported high availability and stability of large-scale user applications by monitoring performance and coordinating issue resolution; Led UAT execution including defect triage and remediation coordination; Ensured data consistency and system resilience by implementing and supervising backup and recovery controls; Facilitated collaboration among development, operations and business teams to streamline delivery and improve cross-functional alignment; Improved release deployment quality and reduced production risk by strengthening deployment practices and oversight; Managed the full SDLC for CRM systems from requirements through deployment and maintenance; Built data query and reporting solutions to address high-priority business requests; Led sprint planning, backlog grooming, and agile ceremonies.