Unix System Administrator

BCS is NETS’ wholly owned subsidiary, and is an entity within the NETS Group. It manages and operates clearing and payment infrastructure for the Singapore Automated Clearing House, including Fast And Secure Transfers (FAST), Inter-bank GIRO (IBG), Cheque Truncation System (CTS), and provides services for PayNow and SGQR Central Repository.

Team and Postion Summary

The Technology Division at BCS is responsible for the operations, maintenance, and support of BCS applications such as FAST, Giro, CTS, PayNow, SGQR, TFR, eGIRO and its critical infrastructure, ensuring its operational stability, regulatory compliance, and service reliability.

The Infrastructure Services Team under Technology ensures the resilience, security, and high-performance of BCS’ technology infrastructure across various functions of service monitoring, incident management, and technical support. The team ensures seamless operation, maintenance, and strategic growth of core infrastructure components, including networks, servers, storage, middleware, and databases.

The Senior Unix Engineer is responsible for managing and maintaining the Unix environment, ensuring its continuous availability and optimal performance in production systems that support BCS’ critical online payment services. 

Key Responsibilities:

System Administration

Perform system administration and maintenance in a heterogeneous environment (production, DR, test) comprising of Sun Solaris servers and Linux-based servers
Perform system upgrade and enhancement on IT infrastructure components
Implement operating system and product-specific security hardening and patches
Monitor obsolescence of IT infrastructure components (systems)
Monitor expiry and perform renewal of system passwords and certificates
Implement a schedule of system backups and database archive operations to ensure data recoverability and business continuity
Develop and implement disaster recovery plans for IT infrastructure (systems) and conduct regular disaster recovery testing and component switchover exercises to ensure usability of standby and DR equipment
Manage the application User Acceptance Test (UAT) and upkeep the use of UAT environment
Document middleware platforms and related infrastructure as directed with respect to functionality, maintenance, and administration.
Provides technical support and guidance (level 3) to end-users, and other IT resources.

Incident and Problem Management

Provide second level system support and resolve incidents and problems in accordance to established Service Level Agreement (SLA)
Perform problem diagnosis on incidents and propose and implement measures to prevent recurrence

Change and Release Management

Schedule and release system changes to production environment in accordance with the change management process / procedures
Create deployment packages for application changes using the application deployment tool

Configuration Management

Develop and maintain a comprehensive operating system hardware and software configuration database / library of all IT infrastructure components used in the production environment

Capacity and Performance Management

Perform infrastructure capacity monitoring and planning
Monitor and perform performance tuning to optimize system performance

Process Management

Devise and implement the underlying processes supporting IT service management, in conformance to corporate security policies and guidelines

Project Management and Support

Provide systems support to projects in accordance with the project timeline
Manage infrastructure enhancement in accordance with established guidelines

Documentation

Develop and maintain technical and process documents to upkeep IT infrastructure

Requirements:

Education and Qualification

Bachelor’s degree in Information Technology, Information Systems, Computer Science, or a related field
Minimum 8 years of experience in system administration and support in Middleware, Unix and Linux systems

Skills and Knowledge

Experience in working with SAN for Unix and Linux Platforms
Experience in performing OS hardening and patching
Experience with enterprise backup and system monitoring and management software
Proficient in scripting for Unix and Linux-based environments to automate tasks
Familiar with database administration and data centre operations will be an advantage
Provide 24/7 support on a rostered basis
Provide weekend and after office hours support for change implementation (for critical production services)
Excellent ability to communicate technical and strategic information effectively across all organisational levels, fostering collaboration and alignment
Strong interpersonal skills and able to work independently as well as in a team
Demonstrate good analytical and problem-solving abilities
Self-starter and possess a customer-oriented mindset
Resilient, ability to multi-task and operate in a fast-paced environment

Professional Certifications

Unix and Linux Certified System Administrator certifications
Industry certification for public cloud administration preferred

Banking Computer Services Pte Ltd (a subsidiary of Network for Electronic Transfers (Singapore) Pte Ltd)