Sr. Systems Administrator

Hi, I'm

Cassie Alexander

, your Recruiter and guide to joining CSG We are excited to learn more about you and your unique background.

We are seeking a skilled Sr. Systems Administrator to provide technical support and Windows administration for our enterprise server environment. This role ensures the reliability, performance, and security of production servers, operating systems, and systems management components. You will be part of a collaborative team that serves as a primary escalation point for complex technical issues and contributes to the design and implementation of optimized server solutions.

We are looking for a Sr. Systems Administrator who will:

• Administer and support Microsoft Windows-based servers for internal and external customers.
• Collaborate with architecture teams to analyze current environments and implement optimized server solutions.
• Provide global support for core Active Directory services (AD, DNS, DHCP, PKI, GPOs, etc.).
• Monitor and document infrastructure performance across messaging, middleware, and collaborative platforms.
• Assist in developing hardware/software cost models and present findings to management.
• Perform installation, configuration, maintenance, and support of hardware, OS, and applications.
• Manage user accounts, security policies, backups, and recovery processes.
• Respond to customer change requests and resolve problem tickets, including after-hours support.
• Follow strict change control procedures.
• Participate in a 24x7 on-call rotation.

Is this opportunity right for you? We are looking for candidates who have:

• Bachelor's degree in Computer Science, related field or equivalent experience.
• Minimum 5 years in a primary support role managing a large Windows server network (50+ servers).
• Proficiency with Windows Server 2022, 2019, and 2016.
• Extensive experience with Active Directory, including setup and implementation.
• Familiarity with supporting Entra ID.
• Ability to work in a CLT contract.
• Ability to read, write, speak and understand the English language in a business environment.

• Experience with Citrix Server or VMware ESX Server.

• Knowledge of network infrastructure applications (messaging, database, intranet/internet communications).

• Expertise in server technologies (DHCP, DNS, LDAP).
• Proficiency in PowerShell, .NET, and modern scripting languages.
• Familiarity with monitoring tools and ITIL frameworks.
• Experience automating support for large server deployments.
• Familiarity with IIS.

Skills & Abilities

• Strong problem-solving skills with a logical, layered approach to issue resolution.
• Excellent written and verbal communication skills for technical and non-technical audiences.
• Ability to manage multiple tasks/projects alongside daily responsibilities.
• Demonstrated ability to anticipate problems and develop contingency plans.
• Willingness to participate in a 24x7 on-call rotation.

Core Competencies

• Professional behavior and constructive collaboration.
• Clear and proactive communication.
• Resourcefulness and teamwork.

CSGer Perks & Benefits

• Work from Home
• Employee Belonging Groups
• Medical / Dental / Life Insurance
• Meal Voucher
• Day-care benefits
• Paid Vacation, Volunteer, Birthday, and Holiday Time Off
• And so much more

Location(s):

Brazil Remote

Accommodation:

If you would like to be considered for employment opportunities with CSG and need special assistance due to a disability or accommodation for a disability throughout any aspect of the application process, please call us at or email us at CSG provides accommodations for persons with disabilities in employment, including during the hiring process and any interview and/or testing processes.

Our Guiding Principles:

Impact: Always help and empower others, whether they're colleagues or customers. When our employees set their minds to something, great things happen.

Integrity: Do what's right for our customers and our people while being authentic. We treat everyone with trust and respect—that's just who we are.

Inspiration: Be bold in the way you think and passionate about the work you do. Test out innovative ideas without the fear of failure.

Our Story:

CSG empowers companies to build unforgettable experiences, making it easier for people and businesses to connect with, use and pay for the services they value most. For over 40 years, CSG's technologies and people have helped some of the world's most recognizable brands solve their toughest business challenges and evolve to meet the demands of today's digital economy.

By channeling the power of all, we make ordinary customer and employee experiences extraordinary. Our people [CSGers] are fearlessly committed and connected, high on integrity and low on ego, making us the easiest company to do business with and the best place to work. We power a culture of integrity, innovation, and impact across our locations, representing the most authentic version of ourselves to build a better future together. That's just who we are.

Learn more about CSG Inclusion & Impact here.