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TISTA Science and Technology

Federal IT services: cybersecurity, AI, data

Functional Area Expert 2 - Linux/Unix

Full-TimeDeadline 12/9/26
No salary listed
Expert
Bachelor's
Austin, TX, USA
In Person100% on-site, Monday through Friday, 8:00 AM–4:30 PM CST.
IT OperationsSystem Administration

About the job

Requirements
  • Proficiency in Linux and Unix system administration, including configuring, monitoring, and troubleshooting distributions such as RHEL, Oracle Solaris, zLinux, Amazon Linux, and Azure Linux.
  • Familiarity with kernel parameters, compiling and updating kernels, managing system resources, and tuning operating systems for performance.
  • Advanced scripting skills in Bash, Zsh, Python, Perl, or Ruby to automate routine tasks such as backups, log rotation, patch management, and performance monitoring.
  • Experience with infrastructure automation and configuration management tools such as Ansible, Puppet, Chef, GitHub, or SaltStack.
  • Knowledge of DevOps principles, including CI/CD pipelines, version control with Git, and containerization with Docker and Kubernetes.
  • Understanding of networking protocols including TCP/IP, DNS, DHCP, HTTP(S), FTP, and NFS, as well as network troubleshooting tools such as netstat, tcpdump, and Wireshark.
  • Knowledge of system security practices, including user management, firewall configuration with iptables or firewalld, SELinux, AppArmor, and intrusion detection/prevention systems.
  • Experience securing communications with SSL/TLS, SSH, or VPNs, and understanding authentication systems including LDAP, Kerberos, or Active Directory.
  • Advanced use of top, vmstat, iotop, and sar to monitor system resources and address bottlenecks.
  • Skill diagnosing kernel issues, application crashes, and resource contention using strace, lsof, dmesg, and server logs.
  • Ability to forecast resource requirements for future server scalability.
  • Experience managing virtualized server infrastructure with VMware, KVM, or Xen.
  • Proficiency deploying and maintaining Docker or Podman containers and orchestrating workloads with Kubernetes or OpenShift.
  • Expertise managing Linux/Unix servers across AWS, Azure, and Google Cloud, including provisioning and scaling automation.
  • Experience installing, configuring, and maintaining MySQL, PostgreSQL, MariaDB, or MongoDB databases on Linux/Unix servers.
  • Experience configuring RAID, LVM, and ZFS storage solutions to support database operations.
  • Ability to work and analyze independently and as part of a team.
  • Experience directing teams and facilitating discussions with teams at various levels concerning Linux/Unix division matters.
  • Experience leveraging staff with detailed knowledge of servers, operating systems, and applied security principles.
  • Experience identifying Linux/Unix system risks and working with technical experts to troubleshoot and resolve issues; reviewing and reporting on security principles, concepts, policy, and regulations.
  • Expert knowledge of business practices, industry standards, key concepts, and risks, and ability to document them in clear narrative or graphic reports.
  • Senior system administrator skill set, preferably in Solaris Unix and Red Hat Linux, including creating methods to gather and analyze source data, evaluate program effectiveness and business processes, implement changes, analyze report data, and maintain tracking databases.
  • Bachelor’s degree in Engineering or a related scientific or technical discipline and 10+ years of work experience; eight additional years of relevant experience may substitute for education, for 18 years total.
  • Ability to pass a Tier 4/High Background Investigation.
Responsibilities
  • Collaborate with developers, network engineers, infrastructure teams, and operations teams to resolve issues, implement solutions, and share best practices for reliable server performance and application compatibility.
  • Lead or support server deployment initiatives, migrations, and infrastructure upgrades.
  • Lead smaller projects or initiatives, such as deploying new technologies, improving system performance, or securing infrastructure.
Desired Qualifications
  • Preferably have senior system administration experience in Solaris Unix and Red Hat Linux.

About the company

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TISTA Science and Technology

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TISTA Science and Technology provides IT services to the federal government as a Service Disabled Veteran Owned Business (SDVOB). It helps agencies with infrastructure, application and data engineering, cybersecurity, artificial intelligence, and high-tech consulting. Their work is delivered through professional services and engineering efforts that plan, design, implement, and optimize IT systems to meet government needs, using specialized teams and methodologies tailored to each project. What sets TISTA apart is its SDVOB status, its veteran-owned perspective, and its focus on federal clients, combining broad technology capabilities with a commitment to taxpayers by addressing critical national challenges. The company aims to support the Nation by delivering reliable, secure, and scalable IT solutions that evolve with government requirements and security standards.

Company Size

501-1,000

Company Stage

N/A

Total Funding

N/A

Headquarters

Rockville, Maryland

Founded

2005

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Simplify's Take

What believers are saying

  • TISTA won two VA awards worth $374.1M in October 2026.
  • CMS CDAC validation contract continued since 2016, reinforcing sticky health IT incumbency.
  • Legal-fee protest award in May 2025 shows active defense of contract positions.

What critics are saying

  • TISTA's 37% headcount drop from 2023 to 2026 signals execution stress.
  • VA exposure concentrates revenue; $517.8M work expires September 2026, risking renewal loss.
  • NIH protest history and B-422891 sustained challenge show capture and pricing vulnerability.

What makes TISTA Science and Technology unique

  • TISTA anchors federal health IT, especially VA and CMS, with domain-specific delivery.
  • NeurofabriQ and Health IT Bridge package AI, analytics, and interoperability for agencies.
  • CMMI Level 3 process maturity supports repeatable delivery across health, cyber, and modernization.

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Benefits

  • Health Insurance
  • Life Insurance
  • Disability Insurance
  • Health Savings Account/Flexible Spending Account
  • 401(k) Company Match
  • Remote Work Options
  • Paid Vacation
  • Paid Holidays
  • Employee Assistance Program
  • Professional Development Budget
  • Training Programs

Company News

GovCon Wire
Sep 3rd, 2021
TISTA Science and Technology Corp hires J.R. Glass as chief growth officer

Prior to this appointment, he was the chief growth officer at service-disabled veteran-owned professional services provider TISTA Science and Technology for J.R. Glass, former vice president of the health and civil business unit at General Dynamics' (NYSE: GD) information technology group, has been named chief growth officer of TISTA Science and Technology.