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Add remote-only job preference to CLAUDE.md & netwrix cover letter

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Russell Ballestrini
===================
.. class:: center
**Principal Software Engineer | Netwrix Corporation**
.. class:: center
russell@unturf.com | `russell.ballestrini.net <https://russell.ballestrini.net>`_ | `GitHub <https://github.com/russellballestrini>`_
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To the Netwrix team:
15+ years building & operating production systems, with deep experience in security-focused companies. At Cofense, I worked as Senior Security Engineer in SOC2 & FedRAMP environments, managing AWS account controls, user access, vulnerability scanning, & security integrity in product delivery. At Mandiant (now part of Google), I built DevOps infrastructure for one of the most recognized names in threat intelligence. Enterprise security is familiar territory.
Multi-tenant platform architecture is something I've done from both sides. At Remind, I led site reliability for infrastructure supporting 30M users across 60+ microservices on AWS (EC2, ECS, RDS, DynamoDB, SQS, Lambda, CloudFormation). Infrastructure-as-code, observability with Datadog, deployment automation. Systems stayed up through COVID-19 lockdowns when education communication became critical overnight. I built unsandbox.com as a multi-tenant code execution PaaS with containerized isolation, resource quotas, & secure sandboxing. Designing for tenant separation, compliance boundaries, & hybrid deployment models (containers, VMs, Kubernetes) is core to how I think about platform problems.
On the engineering side: Python & Ruby are both in my stack, along with Elixir, Bash, Go, & JavaScript. I've built distributed systems, designed CI/CD pipelines with GitHub Actions & GitLab CI, written infrastructure-as-code, & shipped compliance-ready products. At Coursemojo, I designed CI/CD pipelines using CloudFormation & GitHub Actions, introduced Datadog APM with Fargate sidecars, & scaled AI-powered services. The pattern of building foundational platform capabilities that other product teams build on is exactly what I did at Remind & what this role describes.
I've bootstrapped four SaaS products where I owned every architectural decision, & at larger companies I've led architecture reviews, mentored engineers, & set technical direction. Principal means making the people around you more effective while driving the hardest technical problems forward. My AWS depth would complement your Azure focus, bringing cross-cloud perspective to hybrid architecture decisions. The mission of placing identity at the core of data security is compelling, & I'd welcome the chance to discuss how my experience fits.
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Russell Ballestrini