Senior Infrastructure Architect (Hybrid Datacenter & Public Cloud Foundations)

OCBC Bank; Singapore; Hybrid; SGD 210,000 - 270,000; Full time

Benefits offered by this job

Competitive base salary

Flexible benefits

Learning & development opportunities

Community initiatives

Job summary

OCBC Bank is seeking a Senior Infrastructure Architect to lead the design and hands‑on oversight of a hybrid datacenter and public cloud foundation. You will define standards across networking, storage, and virtualization, and align Platform, Security, and Operations teams on a cohesive direction.

The role requires deep expertise in enterprise networking, F5, VMware, and cloud integration, with strong stakeholder management and 12+ years of experience.

Qualifications

• 12+ years in enterprise infrastructure architecture with hands-on production oversight.
• Strong experience with Cisco/Juniper/Arista, firewalls, F5, VMware, SAN/NAS/Object Storage.
• Deep knowledge of BGP, network segmentation, and cloud‑on‑prem integration.

Responsibilities

• Define target-state infrastructure architecture across on‑prem and public cloud.
• Design with operational standards for telemetry, IaC, and provisioning workflows.
• Lead PoCs, review IaC, and guide troubleshooting for cross‑layer incidents.
• Oversee alignment of Platform, Security, and Operations teams toward common goals.
• Mentor teams and ensure production readiness of infrastructure deliverables.

Skills

Enterprise networking

Firewalls

F5 load balancing

VMware

SAN/NAS/Object Storage

Public cloud foundations

Networking: BGP

Arista/ Cisco/ Juniper

Cross-team stakeholder mgmt

VCP/VCAP

Education

Bachelor’s degree in Computer Science/Engineering or equivalent

Tools

VMware

F5

Job description

WHO WE ARE:

As Singapore’s longest established bank, we have been dedicated to enabling individuals and businesses to achieve their aspirations since 1932. How? By taking the time to truly understand people. From there, we provide support, services, solutions, and career paths that meet their individual needs and desires. 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)

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.

Your Opportunity Starts Here. Build the bank we need for the future we want. Find the best version of yourself in a friendly, supportive team. 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.

As the longest established Singapore bank, formed in 1932 from the merger of three local banks, we have grown from strength to strength to become a regional financial services group. With a deep history in Asia, we offer the most comprehensive coverage across ASEAN and Greater China, complemented with a presence in the leading economies of New York, London and Sydney. We are the second largest financial services group in Southeast Asia by assets with one of the world’s highest credit rating (Aa1 by Moody’s and AA- by both Fitch and S&P). We offer private banking services through our wholly‑owned subsidiary, Bank of Singapore, which operates on a unique open‑architecture product platform to source for the best‑in‑class products to meet its clients’ goals. Our insurance subsidiary, Great Eastern Holdings, is the oldest and most established life insurance group in Singapore and Malaysia.