Senior Infrastructure Architect (Hybrid Datacenter & Public Cloud Foundations)

OCBC Bank (Hong Kong) Limited; Singapore; On-site; SGD 180,000 - 260,000; Full time

Benefits offered by this job

Competitive salary

Flexible benefits

Professional development opportunities

Job summary

A leading financial institution is seeking a Senior Infrastructure Architect to lead hybrid infrastructure architecture, overseeing datacenters and public cloud technologies. The role requires 12+ years of experience in enterprise infrastructure architecture, strong production experience with networking and cloud technologies, and the ability to drive decisions across teams. The position offers competitive salary and flexible benefits tailored for career growth and community initiatives.

Qualifications

• 12+ years in enterprise infrastructure architecture.
• Hands-on architecture oversight in production.
• Strong production experience with multiple technologies.
• Storage depth in fabric concepts, replication, backup/DR, and performance sizing.
• Public cloud foundations design, network/security segmentation, identity integration, and logging/monitoring guardrails.

Responsibilities

• Lead architecture and technical oversight across hybrid infrastructure.
• Define standards and oversee adoption with engineering teams.
• Provide hands-on technical leadership and guide troubleshooting.
• Provide hands-on leadership: drive PoCs, review configurations and design artefacts, guide troubleshooting.

Skills

Cisco / Juniper / Arista

firewalls

F5

VMware

SAN / NAS / Object Storage

BGP

ARP

MPIO

Stakeholder management

IaC and telemetry

Tools

Cisco

Juniper

Arista

F5

VMware

SAN/NAS storage

Job description

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This exclusion clause shall take effect to the fullest extent permitted by law.You further consent to Oversea-Chinese Banking Corporation Limited, its related corporations (collectively, the "OCBC Group"), and their respective business partners and agents (collectively, the “OCBC Representatives”) collecting, using and disclosing your personal data for purposes reasonably required by the OCBC Group and the OCBC Representatives to enable them to process your employment application and assess your suitability for the position which you are applying for. Such purposes are set out in a Data Protection Policy, which is accessible at www.ocbc.com/policies or available on request and which you confirm you have read and understood.# **WHO WE ARE:** Today, we’re on a journey of transformation. Leveraging technology and creativity to become a future-ready learning organisation. But for all that change, our strategic ambition is consistently clear and bold, which is to be Asia’s leading financial services partner for a sustainable future. We invite you to build the bank of the future. Innovate the way we deliver financial services. Work in friendly, supportive teams. Build lasting value in your community. Help people grow their assets, business, and investments. Take your learning as far as you can. Or simply enjoy a vibrant, future-ready career.Your Opportunity Starts Here.# Senior Infrastructure Architect (Hybrid Datacenter & Public Cloud Foundations)**Role summary**Lead architecture and hands-on technical oversight of our hybrid infrastructure foundation across datacenters and public cloud. Scope includes enterprise networking, **firewalls**, **F5 load balancing**, **VMware virtualization**, and **storage**. Define standards and reference designs, oversee adoption with engineering teams, and align Platform, Security, Operations and delivery teams on consistent direction and operable outcomes.**Key responsibilities*** Define target-state infrastructure architecture, standards, and roadmap across on-prem and **public cloud** foundations.* Architect and design with operational standards (telemetry, IAC , provisioning workflow ) for the following + **Enterprise network patterns** (segmentation, routing, resilience, operability, firewall zone model, and Load Balancer Pattern) and oversee implementation with network teams. + **Virtualization / Hyperconverged** patterns: cluster design, capacity/headroom policy, lifecycle (firmware/hypervisor/tooling), HA/live migration, and performance baselines. + **Storage pattern**: tiering, performance sizing, replication, backup/restore, encryption, DR design and restore validation; oversee implementation with storage teams. + **Public cloud** foundation patterns: landing-zone concepts, network segmentation, identity integration, encryption/key management integration, connectivity to on-prem, and operational guardrails.* Lead technical deep-dives on cross-layer incidents (network/LB/compute/storage/cloud) and convert learnings into standards and automation opportunities.* Provide hands-on technical leadership: lead PoCs when needed, review key configurations/IaC and design artefacts, guide troubleshooting war rooms, and validate production readiness with engineering teams.**Requirements*** 12+ years in enterprise infrastructure architecture with hands-on architecture oversight in production (design + guide build + operate).* Strong production experience across **Cisco / Juniper / Arista**, **firewalls**, **F5**, **VMware**, and **SAN / NAS / Object Storage**.* Strong L2/L3 troubleshooting depth: + **BGP** (eBGP/iBGP, ECMP, route policy/filtering, diagnosing leaks/blackholes) + **ARP** (cache behavior, gratuitous/proxy ARP, ARP flux; diagnosing VIP failover/intermittent connectivity)* Storage depth: storage fabric concepts and zoning/masking principles; performance sizing (IOPS/latency/throughput); replication/backup/DR; troubleshooting **MPIO** path failures and stuck IO.* Virtualization depth: NUMA/CPU ready time, contention, memory ballooning/swapping concepts; diagnosing virtualization-driven incidents (contention, migration impacts, snapshot growth).* Public cloud knowledge: experience designing foundational controls (network/security segmentation, connectivity, identity integration, encryption, logging/monitoring guardrails) and integrating with on-prem environments.* Strong stakeholder management: able to align multiple teams on standards, drive decisions, and maintain execution momentum.**Certifications (plus)*** **Networking:** CCNP/CCIE, **JNCIP/JNCIE**, **Arista ACE*** **Security/Firewalls:** PCNSE / NSE / Check Point (or equivalent)* **Load Balancing:** **F5** certifications (101/201/301/401)* **Virtualization:** **VMware VCP/VCAP*** **Storage:** Storage vendor certifications or training* **Public cloud / security:** major public-cloud certifications and/or CCSP# # # **What we offer:**Competitive base salary. A suite of holistic, flexible benefits to suit every lifestyle. Community initiatives. Industry-leading learning and professional development opportunities. Your wellbeing, growth and aspirations are every bit as cared for as the needs of our customers.