Head of IT Infrastructure
The Head of IT Infrastructure is responsible for servers, networks, cloud platforms, resilience, and security of the infrastructure that runs the company's websites, payments, and internal systems.
What a Head of IT Infrastructure does
The Head of IT Infrastructure is the leader responsible for the company's entire technology foundation: data centers or cloud accounts, network connectivity, servers, data storage, monitoring, backup, and access systems. If a website, payment gateway, or admin panel goes down, this role owns the problem.
In high-risk verticals this role is critical for several reasons. Downtime in payment infrastructure or the traffic stack directly costs money, and requirements from payment partners and regulators for data storage, logging, and access control strongly shape the architecture. Companies often operate across several jurisdictions, so the infrastructure is frequently geographically distributed, and the network must withstand DDoS attacks and blocking.
In terms of structure, the role usually reports to the CTO or Technical Director, sometimes to the CIO. The team includes systems and network engineers, DevOps or SRE specialists, information security specialists (often in an adjacent function), and contractors for data centers and telecom. The leader is accountable for the infrastructure budget, development plans, and collaboration with development and security teams.
Responsibilities
- Designing and evolving infrastructure architecture: cloud, servers, network, storage, load balancing
- Monitoring the availability of key services and managing SLAs/SLOs for products and payment systems
- Planning capacity and infrastructure budget together with finance and product teams
- Organizing backup and disaster recovery (DR), and running regular failure drills
- Protecting the perimeter and internal network: firewalls, DDoS protection, segmentation, access control
- Managing the infrastructure lifecycle: upgrades, migrations, and decommissioning of equipment
- Building incident management processes, on-call rotations, and postmortems
- Managing contractors and providers (data centers, communication channels, cloud vendors, licenses)
- Coordinating with the security and compliance teams on audits and partner and regulator requirements
- Building and hiring the infrastructure team and developing its engineering culture
Skills
- Deep understanding of networks, virtualization, cloud platforms, and containerization
- Architectural thinking and the ability to weigh the cost and risk of decisions
- Leading engineering teams and setting priorities when tasks conflict
- Budget management and negotiation with vendors and providers
- Understanding of information security requirements and the ability to balance them with development speed
- Business communication: explaining downtime risks and the cost of decisions in terms of money and metrics
- Handling incidents under pressure and making decisions with incomplete information
- Planning on a 2–3 year horizon and breaking strategy down into quarterly goals
Tools
- Cloud platforms (AWS, Google Cloud, Azure) and hybrid solutions
- Infrastructure as code: Terraform, Ansible
- Monitoring and logging systems: Zabbix, Prometheus, Grafana, ELK
- Incident and task management systems: Jira, PagerDuty, Opsgenie
- Backup and DR planning tools
- Network equipment and protection tools: firewalls, WAF, anti-DDoS services
- Access control and secrets management systems (Vault, LDAP/Active Directory)
How performance is measured
- Availability of key services (uptime) and SLA compliance
- Mean time to recovery (MTTR) after incidents
- Number of P1/P2 incidents per quarter and the share of recurring ones
- Success rate of backup and restore tests (RTO/RPO)
- Adherence to the infrastructure budget and cost per unit of capacity
- Lead time for requests from development and the business
By vertical
E-Commerce
In e-commerce, the infrastructure must withstand peak loads during sales and promotions, as well as integrations with payments, warehousing, and delivery. The role focuses on scaling, caching, and resilience of the storefront and cart, where every minute of downtime is directly reflected in revenue.
Corporate functions
In general corporate functions, the role is responsible for internal IT infrastructure: office networks, email, corporate services, employee access, and workstations. The emphasis here is on employee convenience, account management, and compliance with internal security policies.
Levels
Head of / Director
At the Head of / Director level, the role sets the infrastructure strategy for several years, makes decisions on major investments and migrations, and is accountable for the budget and team management. The main responsibility is not configuring systems but making architectural decisions, managing risks, and building processes that work without the leader's direct involvement.
How to get there
People usually move into this role from positions such as systems administrator, network engineer, DevOps, or SRE, where they already were responsible for production systems and took part in incidents. Experience in configuration matters, but so does responsibility for service availability, as well as first experience managing people or large migration projects.
To move toward a leadership role, it is useful to master cloud architecture, resilience and DR principles, the fundamentals of information security, and management of budgets and contractors. It is also important to develop communication skills: explaining risks and the cost of decisions to the business, writing technical justifications, and negotiating with vendors.
Career growth comes from expanding scope of responsibility: from managing a single area (network, servers, cloud) to leading all of infrastructure, and then moving into strategic roles within the technology function. Experience at companies with high availability and security requirements is especially valued, including in high-risk verticals.
Next steps: CTO (Chief Technology Officer), CIO (Chief Information Officer), Head of Infrastructure & Security, Head of Cloud Platform, Director of Engineering
FAQ
How is a Head of IT Infrastructure different from a systems administrator?
A systems administrator configures and maintains specific systems, while the Head of IT Infrastructure is responsible for the architecture of the entire infrastructure, the development strategy, the budget, and the team. This role makes decisions about technology and risk rather than performing operational tasks personally.
What experience is needed to become a Head of IT Infrastructure?
Typically, several years of experience in systems administration, networking, DevOps, or SRE is required, including work with production systems and incidents. Experience managing people or large migration projects is also important, as is an understanding of information security.
Why is this role especially important in high-risk verticals?
Downtime in payment infrastructure or the traffic stack immediately affects revenue, and requirements from payment partners and regulators for data storage and access control shape the architecture. Companies often operate in several jurisdictions and face DDoS attacks, so reliability and security are critical here.
What determines a Head of IT Infrastructure's income?
Income depends on company size, the scale of the infrastructure, the complexity of availability and security requirements, as well as region and work format. The level of budget and team responsibility and experience with high-load projects also matter.
Do you need to understand information security?
Yes, a basic and deep understanding of security is essential, since infrastructure is the primary line of defense. Security is usually a separate function, but the infrastructure leader must be able to balance protection with development speed.
What does an infrastructure leader do day to day?
Most of the time goes to agreeing on architectural decisions, capacity planning, working with the team and contractors, reviewing incidents and problems, and communicating with development, finance, and security. Technical tasks are delegated, but the leader keeps a clear understanding of the key systems.
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