Application Support Engineer

Req ID: 366278 

NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization, apply now.

We are currently seeking a Application Support Engineer to join our team in Cyberjaya, Selangor (MY-10), Malaysia (MY).

1. Governance, Planning & Readiness (Pre-Migration)
   1. Application & Dependency Assessment

• Identify all applications hosted in Cyberjaya Data Centre, categorizing by:

• Environment: MY PROD / SG DR
• Business criticality (Baseline/Important/Critical)
• Recovery Time Objective (RTO) / Recovery Point Objective (RPO) requirements

• Produce detailed Application Dependency Mapping including:

• Upstream and downstream systems
• External integrations (e.g., CTOS, CCRIS, CBM, SOA gateways, MQs, APIs)
• Shared services (LDAP, SMTP, monitoring tools, batch schedulers)

• Identify hard dependencies such as:

• IP addresses, VLANs
• Hostnames
• Firewall rules
• Certificates

1. 2. Compliance & Regulatory Alignment

• Validate data residency requirements per BNM, PDPA, and OCBC internal policies
• Confirm segregation requirements for SG DR vs MY PROD environments
• Ensure application architecture complies with:

• Environment isolation
• Access control segregation
• Audit and logging standards

1. 3. Risk & Impact Analysis

• Perform Application Impact Assessment covering:

• Downtime tolerance
• Batch window sensitivity
• Month-end / quarter-end constraints

• Identify single points of failure
• Document risks and mitigation, including:

• Migration failure
• Latency impacts
• Data corruption
• Rollback complexity

2. Design & Architecture Validation
   1. Network & Connectivity Validation

• Review new network design from Infrastructure/Network teams:

• New IP ranges (if required)
• VLAN separation

• Validate application connectivity assumptions:

• Static IP whitelisting
• Firewall directionality
• Northbound / Southbound traffic flows

1. 2. Application Configuration Review

• Identify application configurations requiring changes:

• Properties files
• Connection strings
• MQ channels & queues
• API endpoints

• Identify hardcoded values that require remediation
• Assess application readiness for:

• IP address changes (if required)
• Hostname changes (if required)
• DNS re-pointing (if required)

1. 3. Non-Functional Readiness

• Validate expected performance in the re-stacked environment:

• Latency sensitivity
• Bandwidth needs

• Confirm High Availability (HA) and clustering behavior post-restack

3. Pre-Migration Preparation
   1. Environment Clean-up & Standardisation

• Remove obsolete configurations
• Decommission unused application components

1. 2. Backup & Data Protection

• Ensure recent full backups have been completed
• Validate backup restore tests
• Confirm database/application backup ownership and rollback data retention policies

1. 3. Certificate & Security Readiness

• Validate TLS/SSL certificates (if required):
  • IP-bound vs hostname-bound certificates
  • Expiry checks
• Coordinate certificate renewal or re-issuance if needed
• Review application secrets management (vault references, keystore paths)

4. Migration / Restack Execution Support
   1. Change & Release Management

• Raise and track application change requests (including emergency changes)
• Support Change Approval Committee (CAC) with:
  • Impact summaries
  • Rollback steps
• Align migration windows with business calendars and batch windows

1. 2. Application Migration Activities

• Support application shutdown/startup sequencing during restack
• Handle cluster node management if applicable
• Validate configuration updates post-move
• Coordinate closely with Wintel/Unix, Database, Network, and Storage teams

1. 3. Real-Time Monitoring During Cutover

• Monitor application logs, error rates, and connection failures
• Perform smoke tests immediately after migration
• Provide real-time status updates to WAR room and stakeholders

5. Post-Migration Validation & Stabilisation
   1. Functional Validation

• Execute application validation checklist:

• Login, transactions, batch submissions, message flows

• Validate integration with external bureaus and downstream systems
• Confirm batch jobs complete successfully

1. 2. DR Readiness Validation

• Validate SG DR environment post-segregation:
  • Connectivity from SG
  • Replication health
• Support DR drills or simulations if required
• Update DR runbooks and procedures accordingly (if required)

1. 3. Performance & Stability Monitoring

• Monitor latency, throughput, and error spikes
• Support hypercare and transition to Business-As-Usual (BAU)

6. Documentation & Knowledge Management
   1. Document Updates

• Update application architecture diagrams, network connectivity diagrams and environment topology (if required)

1. 2. Knowledge Transfer

• Brief Support Teams on:
  • New environment layout
  • New IP ranges and hostnames (if required)
• Update knowledge transfer materials and FAQs

7. Stakeholder & Communication Responsibilities

• Act as Single Point of Contact (SPOC) for:
  • Application Teams
  • Business users
  • Project teams
  • Infrastructure teams
• Provide regular updates on:
  • Migration status
  • Risk assessments
  • Go-Live sign-off confirmation
• Support audit and evidence requests post-implementation

8. Post-Implementation Review (PIR)

• Participate in PIR sessions to:

• Capture lessons learned
• Identify gaps and remediation items

• Highlight improvements for:

• Automation
• Configuration hygiene

• Support closure of all change records

Location: Cyberjaya

About NTT DATA

NTT DATA is a $30 billion business and technology services leader, serving 75% of the Fortune Global 100. We are committed to accelerating client success and positively impacting society through responsible innovation. We are one of the world's leading AI and digital infrastructure providers, with unmatched capabilities in enterprise-scale AI, cloud, security, connectivity, data centers and application services. our consulting and Industry solutions help organizations and society move confidently and sustainably into the digital future. As a Global Top Employer, we have experts in more than 50 countries. We also offer clients access to a robust ecosystem of innovation centers as well as established and start-up partners. NTT DATA is a part of NTT Group, which invests over $3 billion each year in R&D.

Whenever possible, we hire locally to NTT DATA offices or client sites. This ensures we can provide timely and effective support tailored to each client’s needs. While many positions offer remote or hybrid work options, these arrangements are subject to change based on client requirements. For employees near an NTT DATA office or client site, in-office attendance may be required for meetings or events, depending on business needs. At NTT DATA, we are committed to staying flexible and meeting the evolving needs of both our clients and employees. NTT DATA recruiters will never ask for payment or banking information and will only use @nttdata.com and @talent.nttdataservices.com email addresses. If you are requested to provide payment or disclose banking information, please submit a contact us form, https://us.nttdata.com/en/contact-us.

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