Infrastructure and Network Manager

Aeciminingchemicals; Sandton; On-site; ZAR 1,200,000 - 1,800,000; Full time

Job summary

Aeciminingchemicals in Sandton seeks an experienced Infrastructure and Network Manager to own the organization’s hybrid infrastructure and global network environments. You will manage on-prem and cloud platforms, ensure performance, security and cost-effectiveness across multiple countries and time zones, and lead outsourced providers.

The role combines strategic leadership with hands-on technical work when needed, driving observability and FinOps-aligned spend, while maintaining compliance with

Qualifications

• 10+ years of infra and network management with 5+ years in leadership or multi-country role.
• Experience in hybrid infrastructure and multi-cloud environments (AWS, Azure, Google).
• Strong vendor management and enforcement of SLAs.

Responsibilities

• Oversee design, provisioning, and lifecycle of hybrid on-prem/cloud infrastructure and platforms.
• Own the performance and availability of global WAN, SD-WAN, and NaaS environments.
• Drive cost optimization and observability across regions with external providers.
• Plan capacity upgrades and failover strategies to minimize downtime.
• Define and enforce asset/configuration management and runbooks.
• Lead governance, security posture, and regulatory compliance (ISO27001, NIST).

Skills

Hybrid infrastructure

WAN optimization

SD-WAN

Cloud management

Vendor management

Leadership

Stakeholder engagement

Observability

Strategic thinking

Contract negotiation

Education

Bachelor’s Degree in Computer Science, Information Technology, Engineering or related field

Tools

Datadog

ThousandEyes

Dynatrace

CMDB

ITAM

VMware

Hyper-V

Job description

Select how often (in days) to receive an alert:

The Infrastructure and Network Manager will be responsible for the end-to-end ownership of the organization's infrastructure and network environments, which are delivered through a network of outsourced service providers. This includes ensuring the delivery, performance, observability, and cost-effectiveness of critical infrastructure and network services across multiple countries, time zones, and regulatory jurisdictions. This strategic leadership role plays a vital part in supporting hybrid and multi-cloud provisioning, ensuring robust WAN, SD-WAN, and NaaS services, and aligning infrastructure capabilities with business operations and growth. The successful candidate must also be willing to get their hands dirty and perform hands-on technical work when the situation demands it.

Roles and Responsibilities

• Oversee the design, provisioning, and lifecycle management of hybrid (on-prem/cloud) infrastructure and platforms.
• Ensure infrastructure is right-sized, secure, and scalable to meet business demand.
• Own the performance and availability of the organization’s global WAN, SD-WAN, and NaaS environments.
• Drive continuous optimization of network topologies and architectures across regions. Proactively follow up with suppliers and finance teams to resolve payment issues.
• Plan capacity upgrades and failover strategies to achieve minimal downtime.
• Continuously monitor link utilization, packet loss and latency; fine-tune configurations to eliminate bottlenecks.
• Build, negotiate, and manage SLAs with outsourced providers.
• Serve as the primary point of accountability for third-party infrastructure and network services.
• Establish and enforce performance metrics, KPIs, and service quality standards.
• Implement observability frameworks for proactive detection, monitoring, and reporting across infrastructure and networks.
• Ensure high availability and fault tolerance of infrastructure supporting business operations.
• Define and oversee robust asset and configuration management practices.
• Ensure accurate inventory tracking and configuration control for infrastructure assets.
• Monitor and control infrastructure and network spend.
• Drive efficiency and cost transparency through FinOps-aligned practices.
• Ensure infrastructure and network compliance with local and international regulatory requirements (ISO 27001, NIST).
• Lead risk identification and mitigation efforts across jurisdictions.
• Maintain network diagrams, configuration baselines and runbooks.
• Define VLANs, routing protocols (OSPF, BGP), QoS policies and IP addressing schemes.
• Implement firewalls (stateful, NGFW), intrusion detection/prevention (IDS/IPS) and zero - trust segmentation.

Qualifications & Experience

• Bachelor’s Degree - A degree in Computer Science, Information Technology, Engineering or any related field.
• 10+ years of experience in infrastructure and network management, with at least 5 years in a leadership or multi-country role.
• Proven experience managing hybrid infrastructure and multi-cloud environments (e.g., AWS, Azure, Google).
• Deep knowledge of server infrastructure, virtualization (VMware, Hyper-V), and storage systems.
• Strong expertise in WAN, SD-WAN, and wireless and LAN models.
• Strong grasp of Routing/switching, VPN/IPSec/MPLS, and DNS/DHCP/NTP fundamentals
• Experience managing outsourced IT service providers and enforcing SLAs.
• Solid background in observability tools (e.g., Datadog, ThousandEyes, Dynatrace, etc.) and asset/configuration management (e.g., CMDB, ITAM).
• Skilled in implementing and interpreting telemetry, alerts, and dashboards.
• Demonstrated ability to manage across global time zones and jurisdictions.
• Familiarity with ITIL, ISO 27001, and network/infrastructure compliance standards.
• Strategic thinking and ability to align technology with business objectives.
• Strong vendor management and contract negotiation skills.
• Excellent communication and stakeholder engagement abilities.
• High level of analytical and problem-solving skills.Resilience, accountability, and decision-making under pressure.
• Ability to lead technical teams and influence non-technical stakeholders.