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About the Role

TISTA Science and Technology is seeking a Senior Systems Engineer to join our growing team. At TISTA, you’ll do meaningful, mission-driven work that improves lives alongside teammates you trust and leaders who are transparent and supportive. We invest in your learning and internal mobility so you can build a career that keeps advancing. We’re proud to serve and hire Veterans, and we put people first in everything we do.

Responsibilities

Analyze application dependencies, third-party libraries, Windows-specific components, and compatibility issues prior to containerization.
Convert traditional IIS-hosted .NET applications into Linux-compatible containerized workloads running on OpenShift/Kubernetes.
Develop and optimize multi-stage Dockerfiles for .NET application builds, reducing image size and improving deployment speed.
Migrate .NET Framework applications to .NET 6/7/8 to support cross-platform container execution.
Configure Kestrel, reverse proxies, and ingress routing for containerized ASP.NET Core applications.
Integrate NuGet package restoration, MSBuild/dotnet CLI automation, and artifact versioning into Tekton/Argo CD pipelines.
Upgrade outdated NuGet dependencies to address security vulnerabilities and compliance requirements.
Ensure secure authentication integration (OAuth, SAML, JWT, Azure AD) after migration.

Requirements

Utilize programming languages like .Net, Java, Python, SQL, and Ruby, C, C#.Net, VB.NET, C++, SQL, PL/SQL, T-SQL.
Develop processes, scripts, and code to support the CI/CD pipeline.
Experience with automation and developing opportunities to build consistency and quality.
Proven track record of decomposing monoliths into microservices specifically within the .NET ecosystem.
Expert-level proficiency with Kubernetes (designing clusters, managing namespaces, ingress controllers, and resource optimization).
Deep knowledge of .NET (C#) and the transition from .NET Framework to .NET Core/6+.
Experience with containerization (Docker, Podman, OpenShift, Kubernetes) and registry management.
Strong expertise in Red Hat OpenShift, Kubernetes, Docker, Podman Helm Argo CD, Tekton Pipelines, Ansible.
Experience migrating enterprise applications (.NET, Java, PHP) to containers.
Strong knowledge of AWS and Azure cloud platforms.
Hands-on experience with CI/CD automation and GitOps workflows.
Proficiency in Linux administration and shell scripting.
Experience with monitoring tools such as Dynatrace and Splunk.
The ability to pass a Tier 2/Moderate Background Investigation.

Skills

.Net
Java
Python
SQL
Ruby
C#
VB.NET
C++
PL/SQL
T-SQL
CI/CD pipeline development
Automation
Microservices
Kubernetes
.NET Framework
.NET Core/6+
Docker
Podman
OpenShift
Helm
Argo CD
Tekton Pipelines
Ansible
AWS
Azure
GitOps
Linux administration
Shell scripting
Dynatrace
Splunk

Location

Austin, TX

Work Type

100% On-site
Full-time

Experience Level

Senior
10+ years

Education Level

Master’s degree in computer science, electronics engineering or related technical discipline
Equivalent experience may substitute for education

Benefits

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
Professional development reimbursement
Employee Assistance Program
Paid Holidays
Military Leave

About the Company

TISTA Science and Technology is seeking a Senior Systems Engineer to join our growing team.
At TISTA, you’ll do meaningful, mission‑driven work that improves lives alongside teammates you trust and leaders who are transparent and supportive.
We invest in your learning and internal mobility so you can build a career that keeps advancing.
We’re proud to serve and hire Veterans, and we put people first in everything we do.