Software Development Engineer & Test; TS​/SCI Cleared Security Clearance

Position: Software Development Engineer & Test (TS/SCI Cleared) with Security Clearance
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, Dev Ops, 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 Los Angeles, CA OR 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 No

SQL 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 Git Hub Actions
* Support validation and verification efforts for complex, mission-critical software systems
* Collaborate closely with software engineers, Dev Ops, and product teams to uphold high quality standards Qualifications for the SDET:
* Bachelor's degree in Computer Science or a related technical field
* 3+ years of professional experience in software testing, backend development, Dev Ops, or related roles
* Exceptional self-starters with strong technical skills and real project experience will also be considered
* Strong proficiency in Python
* Working knowledge of Type Script and/or Java Script  
* Experience with end-to-end testing frameworks (Playwright, Cypress, or similar)
* Strong understanding of containerized and serverless architectures
* Hands-on experience testing and troubleshooting:
* APIs and backend services
* Distributed systems
* Event-driven architectures
* No

SQL and relational databases
* Caching systems
* Experience with task automation and CI/CD pipeline development
* Proficiency with Git and Git Hub (or similar version control systems)
* Active U.S. Security Clearance (Secret required; TS/SCI preferred) Compensation & Benefits: * $120,+
* Dependent on experience
* * Comprehensive Benefits with extremely generous PTO and Bonuses!
* Hybrid flexibility #LI-AD1 #LI-Onsite Software Development Engineer in Test, SDET, Test Automation, End-to-End Testing, Playwright, Cypress, Python, Type Script, JavaScript, Distributed Systems Testing, API Testing, Backend Testing, Chaos Engineering, System Resilience, Satellite Software, Space Technology, Mission-Critical Systems, Dev Ops, CI/CD Pipelines, Git Hub Actions, Containerized Architectures, Serverless Architectures, Event-Driven Systems, No

SQL Databases, Relational Databases, Caching Systems, Cloud Testing, Scalability Testing, High-Load Testing, Fault Injection, Production Debugging, Hybrid Role Los Angeles, Hybrid Role Colorado, LA Tech Jobs, Colorado Tech Jobs, Arvada Software Jobs, Secret Clearance, TS/SCI Clearance, Government Cleared Roles, Space Industry Jobs, Antenna Control Systems, Satellite Tracking Systems, Automation Frameworks, Test Suite Development, Distributed Architecture Validation, Software Quality Engineering, System Recovery Testing, Space Communications Software