Software Development Engineer in Test

Zachary Piper Solutions is seeking a Software Development Engineer & Test (SDET) to support an innovative space technology company building resilient, mission-critical software systems. This role sits at the intersection of software engineering, DevOps, and advanced test automation , with a strong emphasis on real-world system behavior, scale, and resilience .

You will design and build automated end-to-end tests that mirror actual customer workflows , deliberately stress distributed systems, and validate recovery when things go wrong. If you enjoy breaking systems on purpose — and fixing them — this role is for you.

This position is Hybrid out of Arvada, CO and requires an active Secret or TS / SCI Security Clearance.

Responsibilities of the SDET :

• Design, build, and maintain end-to-end automated test suites using frameworks such as Playwright or Cypress
• Simulate real customer use cases across satellite tracking, antenna reservation, and command-and-control services
• Execute large-scale test scenarios simulating hundreds to thousands of concurrent system operations
• Act as a chaos engineer , injecting failures to validate system resilience and recovery procedures
• Test and troubleshoot API-driven, distributed systems , including event-driven and multi-tier architectures
• Validate behavior across NoSQL and relational databases , caching layers, and serverless components
• Identify, debug, and fix issues in deployed production software
• Build and maintain CI / CD pipelines , with a preference for GitHub Actions
• Support validation and verification efforts for complex, mission-critical software systems
• Collaborate closely with software engineers, DevOps, and product teams to uphold high quality standards

Qualifications for the SDET :

Compensation & Benefits :

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