Infrastructure Engineer (AWS / On-Prem)

ADECCO PERSONNEL PTE LTD; Singapore; Hybrid; SGD 75,000 - 100,000; Full time

Job summary

A leading recruitment agency in Singapore is seeking an experienced IT Infrastructure Specialist to assess, design, and manage hybrid environments with a strong emphasis on AWS Cloud architecture. The ideal candidate will have 8-10 years in IT infrastructure, with a focus on deploying and managing AWS services alongside on-premise systems. This role offers a hybrid work model with competitive benefits.

Benefits

5 days' work week

Office Hours

Hybrid working model

Qualifications

• 8–10 years of total IT infrastructure experience with at least 6 years in AWS Cloud architecture.
• 2+ years managing on-premise infrastructure (servers, network).
• Proven experience in designing, deploying, and managing hybrid environments.

Responsibilities

• Assess, design, install and setup on-premise servers.
• Create detailed deployment design documents for site surveys.
• Collaborate with hardware providers and various teams for project success.

Skills

AWS Cloud architecture

Network design

Security compliance

Collaboration

Education

Bachelor’s Degree in Computer Science or related field

Tools

AWS services (VPC, Direct Connect, Route 53, EC2, IAM, CloudWatch)

Dynatrace

Job description

The Opportunity

• Opportunity to work with MNC company
• 5 days' work week, Office Hours, Hybrid
• Working location: CBD

Responsibilities:

Infrastructure (On-Premise and AWS Cloud):

• Assess, design, install and setup on-premise servers.
• Conduct Site Survey for all on-premises Public Transport Operator data centres, client data centres, client offices, and client designated Tier 2 systems. With consultation with respective stakeholder, and 3rd party vendors.
• Create the Detailed Site Deployment Design document based on each Sit Survey destination. This will document how the planned project hardware will be installed at each site, and the requirements (Networking, Rack Space, Electrical) that the site operator must provide.
• Coordinate with project contracted hardware providers to plan and schedule deliveries physical appliance, server, and workstation, with consultation with Client Project Manager.
• Append to the Observability Design in collaboration with other Technical Architecture and Security team members to document in detail how the availability & SNMP Traps of deployed physical appliances, servers, and workstations at each site will be integrated into the project's Observability platform (Dynatrace SaaS).
• Collaborate with Technical Architecture and Security team members to install and / or configure required software on physical appliances, servers, and workstations at each site.
• Infrastructure Management Service: Plan and manage transition from previous supplier
• Infra ops; e.g. firewall request and configuration, user access management, key and certificate management, patching, security compliance, etc.

Network configuration

1. Create the detailed AWS Network Traffic Routing Design between all VPCs with consultation from Client Network Team.
2. Create the detailed On-Premises Network Traffic Routing Design between project's AWS VPCs and all on-premises Public Transport Operator data centers, client data centres, client offices, and client designated Tier 2 systems. With consultation with Client Network Team, and 3rd party vendors via Client Network Team.
3. Create the detailed External Link Landing Zone Infrastructure Design in collaboration with consultation from Client Network Team, AWS Team, and MPLS provider for the project's External Link Landing Zone (External LLZ), AWS Direct
4. Connect, and Customer Edge Network Virtual Appliance (NVA).
5. Append to the Observability Design in collaboration with other Technical Architecture team members to document in detail how the availability & SNMP Traps of External LLZ NVA, Trusted LLZ, Untrusted LLZ, Inspection VPC NGFW, and other critical points of networking failure will be integrated into the project's
6. Observability platform (Dynatrace SaaS).
7. Implement the AWS Network Traffic Routing Design to enable project's North-South and East-West integrations.
8. Test and verify the routes between source and destination specified in the AWS Network Traffic Routing Design.
9. Implement and test the On-Premises Network Traffic Routing Design to enable project's integration with the sources and destinations stated within.
10. Test and verify the routes between source and destination specified in the On-Premises Network Traffic Routing Design.
11. Collaborate with the Client Network Team, AWS team, and MPLS provider during the setup and testing of telecommunications MPLS and AWS Direct Connect.
12. Implement the External Link Landing Zone Infrastructure Design to enable the project's North-South traffic with designated External Interfaces and Public Transport Operator. Including the setup and configuration of the NVA.
13. Test and verify the routes between source and destination specified in the On-Premises Network Traffic Routing Design. Note that the routes to External Interfaces and Public Transport Operator are in the On-Premises Network Traffic Routing Design

Qualifications

1. Bachelor’s Degree in Computer Science, Information Technology, or a related field.
2. 8–10 years of total IT infrastructure experience, with at least 6 years in AWS Cloud architecture.
3. 2+ years managing on-premise infrastructure (servers, network).
4. Proven experience in designing, deploying, and managing hybrid environments integrating AWS services (VPC, Direct Connect, Route 53, EC2, IAM, CloudWatch) with on-premise systems.
5. Strong technical expertise in network design, routing, and security, including VPN, MPLS, firewall configuration, and SNMP/observability integration (e.g., Dynatrace, CloudWatch, or similar).
6. Demonstrated ability to collaborate across architecture, security, and project delivery teams to execute large-scale infrastructure deployments, ensuring compliance, performance, and operational readiness.

Next Step

Prepare your updated resume and expected package.

Simply click on 'Apply here' or email to [e-mail] to drop your resume

All shortlisted candidates will be contacted.

Prasant Sirohi

EA Licence Number: 91C2918

Registration Number: R22106307

Direct Line: 66977951