Senior Infrastructure Engineer

HomeServe USA Corp.; Norwalk (CT); On-site; USD 150,000 - 190,000; Full time

Job summary

HomeServe USA Corp. seeks an experienced Sr. Infrastructure Engineer to design, implement, and optimize virtualization, storage, and cloud platforms. You will integrate AD with AWS IAM, automate provisioning with IaC tools, and manage VMware and Citrix environments across data centers and cloud.

You’ll drive security, IAM, and observability practices, supporting on-prem and cloud workloads while collaborating on migration and DR efforts in a fast-growing IT landscape.

Qualifications

• Bachelor's degree in computer science, engineering, or information systems.
• 10+ years in IT infrastructure with virtualization focus.
• 3+ years with AWS, GCP or Azure.
• 5+ years in virtualization with VMware and storage.
• 5+ years of hands-on AD in large enterprises.
• 3+ years supporting Citrix environments (XenApp/XenDesktop).
• Advanced scripting: PowerShell, Python, or Perl.

Responsibilities

• Design and manage scalable cloud infrastructure on AWS.
• Implement AWS IAM policies and AD integrations.
• Develop cloud automation using CloudFormation or Terraform.
• Manage AWS services: EC2, S3, RDS, VPC, CloudWatch, Lambda, SSM.
• Support hybrid-cloud including AD domain controllers in AWS.
• Optimize costs via monitoring, automation, lifecycle management.
• Maintain AD DS, DNS, DHCP, and GPOs across environments.
• Maintain on-prem VMware virtualization and storage (Pure Storage).
• Plan and deploy virtualization and cloud modernization initiatives.
• Ensure security, compliance, and operational standards across on-prem and cloud.
• Automate tasks with PowerShell, AWS CLI, Python.
• Collaborate on cloud migrations and DR planning.
• Maintain Citrix Virtual Apps & Desktops and Citrix Cloud.

Skills

AWS

Active Directory

Windows Server

IaC

Python

PowerShell

VMware

Citrix

Education

Bachelor's degree in CS/Engineering

Tools

CloudFormation

Terraform

Datadog

Citrix Studio

Job description

Position Overview

The Sr. Infrastructure Engineer will be responsible for assisting in the design, development, and implementation of virtualization, storage and cloud solutions which support the current and future needs of the business. Day-to-day, the optimizations and performance of these solutions allow HomeServe USA to achieve its rapid growth. This is a critical IT Infrastructure component, so the candidate must have extensive experience in virtual, cloud and storage technologies. This role requires deep expertise in Microsoft Active Directory services and Amazon Web Services (AWS) cloud environments. The ideal candidate will have a strong foundation in Windows-based enterprise systems, identity and access management (IAM), and infrastructure-as-code (IaC) principles. The focus of the Sr. Infrastructure Engineer will entail the engineering and support of all the virtualized systems across multiple data centers and cloud while ensuring the environment is managed to meet best practice standards and agreed service availability (SLA’s). The successful candidate will also have experience in cloud platforms and will drive strategies for implementing cloud platforms at HomeServe USA.

Position Overview

The Sr. Infrastructure Engineer will be responsible for assisting in the design, development, and implementation of virtualization, storage and cloud solutions which support the current and future needs of the business. Day-to-day, the optimizations and performance of these solutions allow HomeServe USA to achieve its rapid growth. This is a critical IT Infrastructure component, so the candidate must have extensive experience in virtual, cloud and storage technologies. This role requires deep expertise in Microsoft Active Directory services and Amazon Web Services (AWS) cloud environments. The ideal candidate will have a strong foundation in Windows-based enterprise systems, identity and access management (IAM), and infrastructure-as-code (IaC) principles. The focus of the Sr. Infrastructure Engineer will entail the engineering and support of all the virtualized systems across multiple data centers and cloud while ensuring the environment is managed to meet best practice standards and agreed service availability (SLA’s). The successful candidate will also have experience in cloud platforms and will drive strategies for implementing cloud platforms at HomeServe USA.

Responsibilities

• Design and manage scalable, secure, and high-performance cloud infrastructure on AWS.
• Implement AWS IAM policies, roles, and federated identity integrations with AD.
• Build and maintain cloud automation and provisioning using CloudFormation, Terraform, or similar IaC tools.
• Manage AWS services such as EC2, S3, RDS, VPC, CloudWatch, Lambda, and Systems Manager.
• Support hybrid-cloud architecture, including AD domain controllers and workloads in AWS.
• Optimize costs and resource utilization through monitoring, automation, and lifecycle management.
• Design, implement, and manage Active Directory Domain Services (AD DS), DNS, DHCP, and Group Policy Objects (GPOs).
• Maintain the existing enterprise virtualization environment (VMware), including troubleshooting, performance monitoring and optimization, capacity, and continuity planning.
• Assist in the planning, design, and implementation of new virtualization technology solutions.
• Ensure security, compliance, and operational standards are met across both on-prem and cloud environments.
• Automate administrative tasks using PowerShell, AWS CLI, and Python.
• Collaborate with cross-functional teams on cloud migration, DR planning, and infrastructure modernization initiatives.
• Maintain and manage Citrix environments (Citrix Virtual Apps and Desktops, Citrix Cloud).
• Using observability tools, ensure high availability, and quickly respond to incidents and outages.
• Document system configurations, procedures, and best practices.
• Maintain an expert level of knowledge by maintaining current certifications, attending seminars or other related activities.
• Interact with hardware and software vendors to ensure timely resolution to any issues or outages.
• Respond quickly and effectively to production issues and take responsibility for seeing those issues through resolution.
• Participate in an on-call rotation for support of systems outside of normal business hours.
• Assist with the planning and deployment of infrastructure security measures.
• Analyze existing operations and make recommendations for the improvement and development of the relevant IT systems.
• Participate in Post-Mortem meetings to discuss any outage occurrences, develop safeguards and, where appropriate, implement any recommended changes to avoid reoccurrence.

Essential Functions

Essential Job Function

% of Time on Function

• Provide operational support to ensure IT infrastructure is running at 100%.
• 30%
• Process level-3 requests & incidents from user community, ensuring SLAs are met.
• 30%
• Implement new systems or improve existing systems to better align with company objectives and goals.
• 20%
• Collaborate with different teams across the organization to realize company objectives.
• 10%
• Documentation of system configurations, procedures and best practices.
• 10%

Job Requirements

• University degree in the field of computer science, engineering, or information systems.
• A minimum of 10 years of strong technical IT infrastructure/systems experience with a strong emphasis towards virtualization technologies, with proven analytical, evaluative, and problem-solving abilities.
• A minimum of 3 years’ experience working with Amazon Web Services, Google Cloud Platform or Microsoft Azure.
• A minimum of 5 years’ experience in virtualization technologies, including expert knowledge of optimization and industry best practices.
• A minimum of 5 years of hands‑on experience with Microsoft Active Directory in a large enterprise.
• 3+ years of experience supporting and administering Citrix environments (Citrix XenApp/XenDesktop or Citrix Virtual Apps and Desktops).
• Deep understanding of Windows Server OS (2016/2019/2022).
• Proficient in administering Microsoft 365 Admin Center, Azure AD, Exchange Online, SharePoint, and Teams.
• Experience managing a PKI infrastructure including both internal and external CAs.
• Advanced experience in systems and network observability tools such as DataDog.
• Subject Matter Expert knowledge of VMware ESX(i) Server 7.0 and above, and VMware vCenter.
• Advanced experience in SAN storage technologies and integration with VMware, specifically with Pure Storage.
• Advanced experience in the use of SAN replication and SRM.
• Advanced experience and knowledge in scripting languages such as PowerShell, Perl, or Python.
• Excellent knowledge of DNS, DHCP, SMTP, SNMP and other TCP/IP protocols and services in support of the virtualization and storage technologies.
• Exceptional customer service skills, in addition to extensive experience working in a team-oriented, collaborative environment.
• Capable of accomplishing tasks with minimal supervision.
• Excellent written and verbal communication skills with the ability to effectively interact with all IT Infrastructure groups.
• Ability to effectively prioritize and execute tasks in a high-pressure