Job description:

About NETS:

The NETS Group is a leading payments services group, enabling digital payments for merchants, consumers, and banks across the entire payments value chain. We are guided by our purpose statement Connecting Communities, Empowering Lives to make an impact to the communities we serve. NETS operates Singapore's national debit scheme and enables payments at more than 130,000 acceptance points in the country. It also provides innovative and diverse digital payment solutions, which include NETS contactless payment, digital payments overseas as well as NETS QR payment, online and in-app payment. NETS is also the issuer of NETS FlashPay, NETS Motoring Card and NETS Prepaid Card.

Responsibilities:

1. Cloud Migration

Plan and execute on-prem to AWS migrations for servers, applications, and databases.
Use AWS MGN for lift-and-shift (rehost) server migrations.
Use AWS DMS and SCT for database migrations, including heterogeneous migrations (e.g., Oracle/SQL Server to Aurora/RDS).
Perform application and dependency discovery, migration assessments, and wave planning.
Define migration strategies: rehost, re-platform, or refactor where applicable.
Develop and execute migration runbooks, including cutover, validation, and rollback plans.
Perform migration rehearsals and ensure successful production cutover with minimal business impact.

2. Cloud Environment Setup

Design and implement AWS landing zones for migrated workloads.
Set up new projects/environments in AWS aligned with best practices (networking, security, governance).
Configure VPCs, subnets, routing, security groups, and connectivity (VPN/Direct Connect).
Establish IAM roles, policies, and security controls following least privilege principles.

3. Automation & Infrastructure

Build and manage infrastructure using Infrastructure as Code (Terraform).
Automate deployment processes using CI/CD pipelines.
Create reusable templates and standard configurations for migration and new workloads.

4. Migration Validation & Optimization

Validate migrated workloads for performance, data integrity, and functionality.
Monitor and manage replication lag, data consistency, and application behaviour post-migration.
Optimize cloud resources for performance and cost efficiency after migration.

5. Collaboration & Documentation

Work closely with application teams, DBAs, security, and project stakeholders throughout migration lifecycle.
Maintain clear documentation: architecture diagrams, migration plans, SOPs, and runbooks.

Provide knowledge transfer to operations teams for post-migration support.

Requirements:

5+ years of experience in infrastructure/cloud engineering.
Hands-on experience in on-prem to AWS migration projects.
Strong expertise in:
- AWS MGN (Application Migration Service)
- AWS DMS and Schema Conversion Tool (SCT)
Solid knowledge of AWS services: EC2, VPC, RDS, S3, IAM, CloudWatch, Route 53.
Strong understanding of networking (subnets, routing, VPN, DX).
Experience with Terraform.
Scripting knowledge (Python, Bash, or PowerShell).

AWS Clouds Migration Engineer