IT Infrastructure Support Site Reliability Engineer II

Astreya; Ireland; On-site; EUR 75,000 - 110,000; Full time

Job summary

Astreya seeks an experienced Infra Automation Engineer to join our IT Infrastructure Support team in Ireland. The role combines software engineering with operations to automate tooling, monitoring, and device management for enterprise-grade infrastructure.

You will work with cross-functional teams to enforce SLIs/SLOs, automate remediation, and drive continuous improvement in system resilience. On-call rotation and 24x5 availability are required.

Qualifications

• 6+ years of experience in Infra Automation Engineering, or Infrastructure Engineering.
• Strong proficiency in automation scripting languages and modern IaC tools.
• Experience with Linux and Windows server environments at scale.

Responsibilities

• Partner with leadership to establish, monitor, and enforce SLIs/SLOs for infrastructure tooling and deployment latency metrics.
• Provide Level 3 expertise for tooling incidents and automate remediation workflows to reduce MTTR.
• Automate repetitive tasks across managed infrastructure to reduce operational overhead.
• Engineer and maintain automated processes to populate asset management platforms (e.g., NetBox) and monitoring systems.
• Develop and deploy full-stack automation for management and monitoring systems with device interaction capabilities.
• Develop IaC configurations for Windows and Linux server roles using Ansible, Terraform, or Puppet, including drift detection and remediation.
• Build end-to-end automation pipelines for patching, CIS baseline enforcement, and compliance auditing.
• Develop API-driven tools for network configuration management and real-time health monitoring.
• Deploy and standardize monitoring agents and dashboards with alerts based on SLIs.
• Create automation for ticket handling and escalation workflows to meet 2-hour response SLAs.
• Participate in 24x5 on-call rotation to support infrastructure and security tooling.

Skills

Python

Bash

PowerShell

Go

Terraform

Ansible

Chef

Puppet

Linux

Windows

Cisco

NETCONF/RESTCONF

Prometheus

Grafana

Datadog

ELK

Tools

Terraform

Ansible

Chef

Puppet

Job description

We are seeking an experienced Infra Automation Engineer to join our IT Infrastructure Support team,

responsible for ensuring the reliability, scalability, and performance of critical physical security

infrastructure and supporting systems. In this role, you will combine software engineering expertise with

operations knowledge to build and maintain automation tools, monitoring systems, and processes that

support enterprise-grade server, network, and security device management. You will work closely with

cross-functional teams to define and enforce service level objectives, reduce operational toil through

automation, and drive continuous improvement in system resilience. This position requires 24x5

availability with on-call rotation to ensure uninterrupted support for mission-critical infrastructure.

Key Responsibilities

• Partner with leadership to establish, monitor, and enforce Service Level Indicators (SLIs) and Service Level Objectives (SLOs) for infrastructure tooling, including configuration compliance rates, patch success rates, and deployment latency metrics.
• Provide Level 3 expertise for tooling-specific incidents, focusing on automating incident remediation workflows and reducing Mean Time To Repair (MTTR) through intelligent automation and runbook development.
• Identify and automate repetitive manual tasks across managed infrastructure, targeting measurable reductions in operational overhead (e.g., 50% reduction in manual server build time) through scripting and workflow automation.
• Conduct thorough root cause analysis and lead blameless postmortems for all major service-impacting incidents, driving systemic improvements in tooling reliability and infrastructure resilience.
• Engineer and maintain automated processes and scripts to populate, update, and synchronize asset management platforms (e.g., NetBox), configuration management databases, and monitoring systems for internal and external stakeholders.
• Design, develop, and deploy full-stack applications, custom plugins, and automation scripts to extend functionality of management and monitoring systems, enabling direct device interaction for configuration management.
• Develop and maintain fully automated Infrastructure-as-Code configurations for Windows and Linux server roles using tools such as Ansible, Terraform, or Puppet, including drift detection and
• Build end-to-end automation pipelines for vulnerability patching, security baseline enforcement (CIS benchmarks), and continuous compliance auditing against internal and regulatory standards for physical security devices.
• Develop API-driven tools for network configuration management, automated firmware updates, pre/post-change validation, and real-time network health monitoring across the device fleet.
• Deploy and standardize monitoring agents, centralized log collection systems, and custom dashboards with alerts based on critical SLIs (latency, error rate, saturation, traffic) for servers and
• Build automation scripts for intelligent ticket handling, problem validation, and escalation workflows within enterprise ticketing systems, ensuring 2-hour initial response SLAs are consistently met.
• Participate in 24x5 on-call rotation to provide timely support for infrastructure systems, security devices, and related tooling, ensuring service continuity and rapid incident response.

Required Skills

• 6+ years of experience in Infra Automation Engineering, or Infrastructure Engineering
• Strong proficiency in Python, Bash, and PowerShell for automation scripting, with experience in Go for building high-performance backend services and APIs.
• Hands-on experience with Infrastructure-as-Code tools (Terraform, Ansible, Chef, or Puppet) and configuration management practices, including drift detection, version control, and automated remediation.
• Advanced knowledge of Linux and Windows server environments, including Tier 3 troubleshooting capabilities, system hardening, and enterprise-scale server management.
• Solid understanding of enterprise networking concepts, Cisco device administration, network automation protocols (NETCONF/RESTCONF), and experience with network monitoring and flow analysis tools.
• Experience implementing and managing monitoring solutions (Prometheus, Grafana, Datadog) and centralized logging platforms (ELK Stack), with ability to create custom dashboards and