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# Senior Site Reliability Engineer

- **Company:** Peraton Inc
- **Location:** Reston, VA, United States
- **Experience:** Expert
- **Salary:** $104,000.0 - $166,000.0
- **Contract:** Permanent contract
- **Skills:** OpenTofu, Amazon Web Services, Amazon S3, Audit Trail, Code Review, Continuous Integration, Software Debugging, Github, Identity and Access Management, Python (Programming Language), Key Management, Load Testing, Role-Based Access Control, Reliability Engineering, Prometheus, Software Engineering, Trunk-based Development, Data Logging, Enterprise Software Applications, Performance Testing, Grafana, Amazon Virtual Private Cloud (VPC), Amazon Relational Database Service, Gitlab-ci, Kubernetes, Codebase, Cloudwatch, Terraform, Dynatrace
- **Published:** October 27, 2026
- **Apply:** https://diversityjobs.com/career/18755377/Senior-Site-Reliability-Engineer-Virginia-Reston

## About the Role

* Bachelor's Degree and 8+ years in SRE, platform, or software engineering roles with production reliability ownership
 * Strong software engineering in Python; Rust experience strongly preferred. Comfortable reading, debugging, and shipping changes to production application code, including performance, concurrency, and failure-handling fixes. Working effectively in unfamiliar codebases, including with AI-assisted development tools, counts. Judgment and code review rigor matter more than language tenure.
 * SLOs and error budgets. Defining SLIs with product and engineering, setting SLO targets, running error-budget policy, and using burn rates to drive release and prioritization decisions
 * Monitoring and alerting ownership. CloudWatch, Prometheus/Grafana, or equivalent; building actionable, low-noise alerts tied to SLOs and multi-window burn rates; owning alert routing and on-call hygiene
 * Designing service, SLO, and executive-level dashboards in Grafana or equivalent that answer real operational questions
 * Application instrumentation. Adding metrics, structured logging, and distributed tracing (OpenTelemetry or equivalent) directly in Python and Rust services
 * Synthetic and transactional health checks. Building health-check capabilities into the application and scripted user-journey checks (CloudWatch Synthetics, Grafana k6, Checkly, or equivalent) that exercise real auth flows and critical transactions
 * Incident management. Leading incident response, running blameless postmortems, and driving corrective actions to closure
 * Strong Amazon EKS / Kubernetes operations background: Helm, RBAC, pod identity, GitOps, upgrades, troubleshooting
 * Solid AWS experience across core services (VPC, IAM, S3, RDS, CloudTrail, CloudWatch, KMS)
 * CI/CD experience in GitHub Actions and/or GitLab CI, including reliability and performance gates in pipeline
 * Infrastructure-as-code (OpenTofu / Terraform)
 * Agile delivery: trunk-based development, MR-driven change, automated quality gates
 * Security and compliance awareness: secrets management, least privilege, audit evidence, ideally in NIST 800-171, CMMC, FedRAMP, or DoD environments
 * US Citizenchip is required

Desired Qualifications

 * Production Rust experience (async/Tokio, FFI with Python via PyO3, or similar)
 * Load and performance testing (k6, Locust, or equivalent) and capacity planning
 * Chaos engineering and fault-injection testing
 * Progressive delivery (canary/blue-green with automated rollback on SLO or health-check failure)
 * Experience with Big Bang (Platform One), IronBank, or hardened-image pipelines
 * Prior work on systems pursuing or holding an ATO
 * Contributions to observability tooling or Rust/Python open-source projects

## Description

Own end-to-end reliability of the enterprise application; define SLIs/SLOs with product and engineering, enforce error-budget policy, and use burn rates to guide release and prioritization decisions.

 * Write, review, and ship production Python and Rust code to fix performance, concurrency, and failure-handling issues and make services observable and resilient.
 * Instrument services with metrics, structured logging, and distributed tracing (OpenTelemetry or equivalent).
 * Own monitoring and alerting (CloudWatch, Prometheus/Grafana): build low-noise, SLO-based burn-rate alerts, manage alert routing and on-call hygiene, and design service, SLO, and executive dashboards.
 * Build in-application health checks and synthetic user-journey tests that exercise real auth flows and critical transactions.
 * Lead incident response, run blameless postmortems, and drive corrective actions to closure.
 * Operate Amazon EKS/Kubernetes (Helm, RBAC, pod identity, GitOps, upgrades) and core AWS services, managed through OpenTofu/Terraform.
 * Maintain GitHub Actions/GitLab CI pipelines with reliability and performance gates, supporting trunk-based, MR-driven Agile delivery and progressive (canary/blue-green) rollouts.
 * Enforce secrets management and least privilege, and produce audit evidence for NIST 800-171, CMMC, FedRAMP, or DoD/ATO environments.
 * Drive load testing, capacity planning, and chaos engineering, and mentor engineers on reliability practices.