Senior Systems Administrator

Job Summary 
Our client, a leading financial services company, is seeking a skilled Senior Systems Administrator to join their development team.

This position is W-2 only. We do not work with third-party firms or C2C arrangements for this role.

Core Responsibilities 

• Ensure the stability, security, availability, and operational readiness of the IAA platform and related services
• Administer, support, and maintain AWS cloud environments and server infrastructure across Development, UAT, and Production environments
• Monitor application and infrastructure performance, proactively identify issues, and respond to alerts to minimize operational disruption
• Provide production support for the IAA platform, including integrated applications, databases, reporting tools, data pipelines, and external services
• Troubleshoot, investigate, and resolve application, infrastructure, access, and production-related incidents, performing root cause analysis when required
• Manage user onboarding, access provisioning, permissions, MFA setup, and authentication processes in accordance with security and compliance standards
• Support vulnerability management, patching activities, certificate lifecycle management, and remediation efforts to maintain secure environments
• Maintain Linux and Windows server environments, including system upgrades, patch management, routine maintenance, and environment readiness activities
• Partner closely with development, infrastructure, InfoSec, accounting, and service desk teams to resolve issues, support business initiatives, and improve platform performance
• Develop and maintain operational documentation, runbooks, support procedures, and knowledge base materials to support efficient service delivery
• Identify opportunities to improve operational efficiency, automate manual processes, reduce risk, and enhance support workflows
• Support infrastructure expansion, platform enhancements, and new technology integrations while ensuring ongoing system reliability and compliance

Required Skills/Experience (Must-Haves) 

• Demonstrated experience supporting business-critical applications in production environments, including incident resolution, root cause analysis, ticket management, and stakeholder communication
• Hands-on experience administering and troubleshooting AWS services, including EC2, S3, Lambda, CloudWatch, VPCs, Bastion Hosts, and AWS Certificate Manager
• Strong knowledge of Red Hat Enterprise Linux administration, including patch management, system maintenance, package management, server reboots, and shell-based troubleshooting
• Experience with user access provisioning, MFA administration, Okta, vulnerability remediation, certificate management, and security compliance processes
• Proficiency with operational and support tools such as ServiceNow, GitLab/GitHub, Azure DevOps, monitoring platforms, and incident management workflows
• Excellent collaboration and communication skills, with the ability to work effectively across technical and business teams, document processes, manage operational risks, and drive issue resolution

Preferred Skills/Experience (Nice-to-Haves) 

• Experience supporting investment accounting, financial reporting, asset management, or other regulated financial services platforms
• Working knowledge of Snowflake concepts, data pipelines, batch processing, or downstream reporting integrations
• Prior experience supporting globally distributed applications or multi-region cloud environments
• Familiarity with automation or scripting using shell scripts, Python, GitLab CI/CD, or infrastructure-as-code concepts
• Experience working with certificate automation, secrets management, Venafi, or enterprise certificate renewal processes
• Practical exposure to SAP S/4HANA or SAP HANA, PostgreSQL, ETL workflows, file-based integrations, S3-backed storage patterns, and production data/reporting support
• Exposure to ITIL-based support processes, change management, incident management, problem management, or operational risk controls
• Ability to translate recurring support issues into process improvements, runbooks, monitoring enhancements, or automation opportunities

Key Competencies & Behaviors 

• Customer Service Orientation
• Attention to Detail
• Adaptability & Resilience
• Proactive Communication
• Analytical Thinking

Work Environment

• Work location: Chicago, IL
• Work Model: Onsite 3 days per week. Anchor days: 3 days flex

Compensation & Benefits 

• Pay Range: The approximate pay range for this position is between $36.00 and $52.00. Please note that the pay range provided is a good faith estimate. Final compensation may vary based on factors including but not limited to background, knowledge, skills, and location. We comply with local wage minimums. 
• Medical, Dental, & Vision Insurance Plans 
• Employee-Owned Profit Sharing (ESOP) 
• 401K offered 

About KellyMitchell 
At KellyMitchell, our culture is world class. We’re movers and shakers! We don’t mind a bit of friendly competition, and we reward hard work with unlimited potential for growth. This is an exciting opportunity to join a company known for innovative solutions and unsurpassed customer service. We're passionate about helping companies solve their biggest IT staffing & project solutions challenges. As an employee-owned, women-led organization serving Fortune 500 companies nationwide, we deliver expert service at a moment's notice. 

Marketing Disclosure 
By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from KellyMitchell and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at https://www.careers.kellymitchell.com/privacy-policy.

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