Job Closed
This listing is no longer active.
Senior Systems Administrator
Location
United States
Posted
92 days ago
Salary
0
Seniority
Senior
Job Description
Senior Systems Administrator
Sharetru
• As a Senior Systems Administrator, you will be responsible for the design, operation, hardening, and reliability of our Linux infrastructure across multiple networks and data centers including: • Administer and harden Red Hat Enterprise Linux/Rocky Linux systems across production, staging, and internal networks • Operate infrastructure spanning multiple data centers, including segmented networks, DMZs, and private backend tiers • Manage and secure services including: • Apache / PHP-FPM • SFTP / FTPS (ProFTPD or equivalent) • MySQL / Percona (including Galera clusters and proxies) • HAProxy / reverse proxies / WAF-style architectures • Design and maintain high-availability and fault-tolerant systems • Implement and maintain security controls: • SELinux (enforcing, custom policies) • iptables / nftables / ipset • TLS hardening (FIPS-aware where applicable) • MFA, access controls, and least-privilege enforcement • Support and contribute to compliance efforts (SOC 2, HIPAA, FedRAMP-aligned controls), including evidence collection and control validation • Automate system configuration and maintenance using Ansible, shell scripting, and/or Python • Troubleshoot complex production issues across OS, network, and application layers • Participate in change management, incident response, and root cause analysis • Collaborate closely with engineering, support, and compliance teams to keep systems stable, secure, and auditable • Log into systems, read logs, understand packet flow, and know *why* something is not working as expected.
Job Requirements
- 7+ years of professional Linux systems administration experience
- Strong experience with RHEL-based distributions (RHEL, Rocky, CentOS)
- Deep understanding of Linux Networking (routing, firewalls, NAT, VPN concepts), system performance and troubleshooting, and filesystems, storage, and backups
- Proven experience securing Linux systems in regulated environments
- Experience with SELinux beyond permissive mode
- Experience with iptables/nftables/ipset in production
- Strong knowledge of TLS, certificates, and cryptography basics
- Experience operating high-availability systems (clusters, failover, redundancy)
- Solid scripting skills (Bash required; Python a strong plus)
- Familiarity with configuration management (Ansible preferred)
Benefits
- Health Care Plan (Employer-paid Medical, Dental, & Vision)
- Retirement Plan (401k, IRA)
- Paid Time Off (Vacation, Sick Time & Public Holidays)
- Work From Home
- Reimbursement for mobile phone and home internet
- Company-issued computer and technology needed for your role
Related Guides
Related Categories
Related Job Pages
More System Administrator Jobs
Teamcenter Systems Administrator – Onsite
Smiths Group plcPioneers of progress: Engineering a better future.
• The Teamcenter Administrator role is responsible for the day-to-day administration, maintenance, and support of the Teamcenter PLM system. • This includes system configuration, user administration, data management, troubleshooting, and ensuring system stability and performance. • The Administrator will work closely with engineering, manufacturing, and other departments to ensure the effective utilization of Teamcenter within the organization to ensure seamless operations and robust system performance to enhance productivity.
Senior Training Developer – Systems Administrator
CACI International IncExpertise and Technology for National Security
• Join a high-performing, matrix-oriented Organizational Change Management (OCM) Team responsible for creating and implementing change management strategies and plans that maximize employee usage, drive faster adoption, and promote higher utilization of the hardware and software asset management capabilities • Lead comprehensive analysis of training needs, proactively identifying skill gaps and performance opportunities related to the ITAM solution across various departments • Translate business objectives into clear, measurable learning outcomes • Architect alongside team lead and implement innovative, multi-modal learning strategies (e.g., blended learning, microlearning, gamification) that cater to diverse learning styles and maximize knowledge retention • Demonstrate mastery of adult learning principles and instructional design methodologies (Successive Approximation Model (SAM), Agile Instructional Design (ID)) to create highly effective solutions for complex technical challenges • Develop sophisticated, high-impact learning content across a variety of formats, including Dynamic Instructor-Led Training (ILT) and Virtual Instructor-Led Training (VILT) modules, complete with comprehensive facilitator guides and participant workbooks • Lead development of highly interactive and engaging eLearning computer-based training (CBT) courses that leverage advanced authoring tools • Finalize intuitive job aids, quick reference guides, user manuals, video tutorials, simulations, and performance support tools • Design and develop robust assessment tools to rigorously measure learning effectiveness and skill transfer • Act as a lead developer, consistently delivering highly engaging, dynamic, and impactful training sessions • Expertly guide participants through complex topics, foster active participation, skillfully manage Q&A, and adapt delivery in real-time to meet the diverse needs of the audience • Serve as a subject matter expert during training, providing insightful explanations and practical guidance • Possess an ability to translate highly technical ITAM concepts (e.g., asset lifecycle, software licensing models, hardware inventory, CMDB integration, discovery processes, financial reconciliation, compliance reporting, contract management) into clear, concise, actionable, and user-friendly training content for both technical and non-technical audiences • Design and execute robust evaluation frameworks to measure the effectiveness and business impact of training programs • Leverage data analytics and feedback to drive significant, data-informed improvements and demonstrate a commitment to continuous learning and iteration in training design and delivery • Serve as a trusted advisor and subject matter expert to project teams, ITAM solution architects, system administrators, and business stakeholders • Collaborate seamlessly to ensure accuracy, relevance, and strategic alignment of all training initiatives • Potentially mentor junior team members or contribute to best practices for the training function • Strategically manage and maintain training content within the Learning Management System (LMS), ensuring optimal user experience, accurate reporting, and efficient content deployment
System Admin
TabaPayTabaPay, the leading instant money movement platform, enables secure, reliable, and lower cost instant payments for Fintech innovators. We offer direct access to 15 banking partners, 14 networks (debit, credit, RTP & ACH), multiple geographies, innovative products, and features in one unified API. TabaPay is trusted by >2,000 Fintechs and Financial Institutions and is ranked a top merchant acquirer in the US, processing over a million transactions a day. For more information, visit www.tabapay.com
Who We Are The world is moving towards instant digital payments and TabaPay is leading the way. We help thousands of Fintechs in the US and Canada instantly move money in and out of accounts and we are actively expanding into other countries. Our customers represent the hottest verticals in the financial service industry such as neobanks, challenger brokers, gaming and wallets. TabaPay is a highly profitable rocketship that processes billions of dollars each year. To learn more visit www.tabapay.com. Who We Are The world is moving towards instant digital payments and TabaPay is leading the way. We help thousands of Fintechs in the US and Canada instantly move money in and out of accounts and we are actively expanding into other countries. Our customers represent the hottest verticals in the financial service industry such as neobanks, challenger brokers, gaming and wallets. TabaPay is a highly profitable rocketship that processes billions of dollars each year. To learn more visit www.tabapay.com . Responsibilities Proactively monitor the production environment to maintain a 24×7×365 uptime service. Manage a secure and high-performance network to support daily transaction processing, ensuring systems remain up and running. Perform regular monitoring of alerts to proactively identify potential issues and optimize system and network performance. Collaborate with cross-functional teams to troubleshoot and resolve system and network issues; work with Card Networks when required. Conduct weekly server maintenance, including system upgrades and patch management on Linux servers. Create and maintain detailed documentation of system and network configurations, procedures, and troubleshooting guides. Participate in Incident Response and Disaster Recovery planning and testing to ensure continuity of operations during incidents. Collaborate closely with IT and Operations teams to align system and network security measures with company policies and regulatory standards. Stay current on industry trends, emerging technologies, and security threats to enhance system reliability and resilience. Participate in an on-call rotation to provide off-hours support and respond promptly to system or network issues. Monitor system performance and respond to alerts and incidents, performing troubleshooting, root cause identification, and escalation when necessary. Proactively restart systems or services as needed during outages. Update system status on the company website during outages or service disruptions. Notify internal stakeholders of outages and send bulletins when outage thresholds are exceeded. Serve as the first point of contact for incidents during on-call or graveyard shifts. Participate in daily audit updates and documentation activities during on-call shifts. Update internal alert pages and notify the team in case of anomalies. Create and maintain a centralized documentation page for all change tickets. Maintain an up-to-date log of change tickets, including ticket number, requester, and status. Perform daily and weekly scheduled tasks as defined by procedures and provide status updates to the team. Participate in on-call handovers and communicate effectively with team members. Qualifications The compensation for this position is $100,000. However, base pay offered may vary depending on job-related knowledge, skills, and experience. In addition to a full range of medical, financial, and/or other benefits, dependent on the position offered. Benefits TabaPay offers the following benefits: 100% employer-paid health care insurance including medical, dental, vision, and life insurance (for employee only) Employer 401K Matching Generous and Flexible PTO EEO Employer: TabaPay is an equal opportunity employer; all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, Veteran status, or any other protected classification.
• Ensure fault-tolerance, scale and uninterrupted operations for our services. • Use cutting-edge technology to solve a variety of infrastructure problems. • Implement and improve CI/CD processes.



