Senior System Administrator

Tista Science And Technology Corporation-posted 4 months ago

Full-time • Senior

Remote • Austin, TX

Professional, Scientific, and Technical Services

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Are you a Senior Systems Administrator who would like to have a positive impact for millions of people? If so, we may have an opportunity for you! TISTA associates enjoy above Industry Healthcare Benefits, Remote Working Options, Paid Time Off, Training/Certification opportunities, Healthcare Savings Account & Flexible Savings Account, Paid Life Insurance, Short-term & Long-term Disability, 401K Match, Tuition Reimbursement, Employee Assistance Program, Paid Holidays, Military Leave, and much more!

Proactively monitor system health, availability, and performance using observability tools (e.g., Prometheus, Grafana, Datadog, Splunk).
Respond to alerts and incidents, triage issues, and perform root cause analysis (RCA).
Lead on-call rotations to ensure 24/7 uptime and quick recovery from outages.
Document incident reports and contribute to postmortems to prevent recurrence.
Automate manual operational tasks such as deployments, scaling, and configuration using tools like Ansible, Terraform, or Puppet.
Manage infrastructure as code (IaC) to ensure consistency across environments.
Optimize CI/CD pipelines for reliable and repeatable software delivery.
Build self-healing systems to minimize downtime.
Conduct load and stress testing to validate system performance under peak demand.
Establish and enforce Service Level Objectives (SLOs), Service Level Indicators (SLIs), and Service Level Agreements (SLAs).
Identify and reduce sources of latency, bottlenecks, and single points of failure.
Work with development teams to design reliability, scalability, and fault tolerance into customer servers.
Patch operating systems, containers, and dependencies to address vulnerabilities.
Ensure compliance with organizational and regulatory requirements.
Implement access controls, secrets management, and least privileged principles.
Monitor resource utilization (CPU, memory, storage, network) to anticipate scaling needs.
Plan for growth by forecasting demand and preparing infrastructure accordingly.
Optimize cloud costs by rightsizing instances, using autoscaling, and leveraging reserved/spot instances.
Partner with software engineers to embed reliability practices into development.
Mentor teams on best practices for observability, automation, and incident handling.
Participate in blameless postmortems and contribute to knowledge-sharing sessions.
Continuously evaluate new tools and technologies to improve system reliability.
Design, monitor, and maintain Customer Servers to meet VA's 99.9%+ uptime and SLA requirements across multi-cloud and hybrid environments.
Implement fault-tolerant and self-healing architectures leveraging automation.
Develop and manage observability frameworks (logging, metrics, tracing) to detect, respond to, and remediate incidents quickly.
Lead blameless postmortems and drive corrective actions to strengthen VAEC resilience.
Engineer scalable automation pipelines for provisioning, patching, and compliance (e.g., Ansible, Terraform, Puppet, GitHub Actions).
Reduce manual effort through self-service tools for operations teams.
Monitor and optimize application and infrastructure performance to meet demand from VA Medical Centers, Enterprise Data Warehouses, and end users.
Ensure latency, throughput, and resource utilization align with mission needs.
Integrate VA 6500, NIST 800-53, FedRAMP, and Zero Trust requirements into daily operations.
Partner with cybersecurity teams to enforce continuous ATO (cATO) practices and vulnerability remediation.
Collaborate with Release Management, Engineering, and Operations teams to improve change management, deployment pipelines, and reliability practices.
Drive the adoption of SRE principles (error budgets, SLIs, SLOs, SLAs) into VA's IT Service Management (ITSM) processes.
Operate across VA's Enterprise Cloud (VAEC), on-premises data centers, and hybrid platforms, ensuring seamless integration and interoperability.
Support workloads across AWS GovCloud, Microsoft Azure Government, and Oracle Cloud Infrastructure (OCI) where applicable.

5 years of experience in Site Reliability Engineering, DevOps, or Systems Engineering.
Strong experience with Linux/Unix systems administration and troubleshooting.
Proficient with cloud platforms (AWS and/or Azure), especially in deploying Production workloads.
Deep understanding of monitoring, metrics, alerting, and observability.
Proficient in designing, implementing, and managing automation solutions using Ansible.
Experience with CI/CD tools (e.g., GitHub Actions, Jenkins, GitLab CI, Azure DevOps).
Hands-on with containers and orchestration (Docker, Kubernetes, EKS, AKS).
Familiarity with networking concepts (TCP/IP, DNS, TLS, VPCs, load balancing).
Solid understanding of software development lifecycle (SDLC) and Agile methodologies.
Comfortable participating in on-call rotations and handling high-priority incidents.

AWS Certified SysOps Administrator or DevOps Engineer.
Linux Certified: Azure Administrator or DevOps Engineer Expert.
Certified Kubernetes Administrator (CKA).
Experience in chaos engineering, capacity modeling, or SRE tooling.
Excellent analytical and problem-solving skills.
Ability to work in cross-functional teams and communicate effectively with developers, operations, and leadership.
A strong bias for automation and self-healing systems.
Ownership mindset with a commitment to reliability and continuous improvement.

Above Industry Healthcare Benefits
Remote Working Options
Paid Time Off
Training/Certification opportunities
Healthcare Savings Account & Flexible Savings Account
Paid Life Insurance
Short-term & Long-term Disability
401K Match
Tuition Reimbursement
Employee Assistance Program
Paid Holidays
Military Leave

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