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Relativity Space · 9 hours ago

Senior Software Development Engineer in Test

Long Beach, CA

Full-time

Onsite

Senior Level

$153K/yr - $196K/yr

5+ years exp

Relativity Space is building rockets to serve today’s needs and tomorrow’s breakthroughs. As a Senior SDET on the Vehicle Software TRADE team, you will own the automated validation lifecycle of integrated vehicle software, designing and leading end-to-end testing frameworks to ensure software reliability and readiness.

3D TechnologyAerospaceArtificial Intelligence (AI)Manufacturing

Responsibilities

Own the architecture and implementation of scalable automation frameworks (primarily using Python and/or Rust) to validate full-stack vehicle software including FSW, ESW, and configuration artifacts across software-in-the-loop (SITL), hardware-in-the-loop (HITL), and integrated system environments, leveraging reusable libraries, automation services, and structured validation interfaces

Develop automated integration and end-to-end test suites that exercise real-time control flows, telemetry, mission sequences, and failure scenarios in both SITL and HITL setups

Implement automated test cases and analyzers that benchmark performance, validate qualification metrics, and publish dashboards (e.g., Grafana) to improve traceability and data-driven decision making

Drive continuous test execution through CI pipelines (BVT, integration, nightly, weekly) to deliver fast regression feedback and release confidence

Lead system-level test execution during release cycles—prepare environments, execute scenarios, evaluate results, and maintain traceable artifacts

Validate subsystem integrations prior to full-system execution, perform root-cause analysis during anomalies, and coordinate with development teams for resolution

Present release readiness reviews by aggregating test results, metrics, quality gates, and risk assessments

Mentor engineers on automation architecture, instrumentation strategies, and scalable test-design patterns

Qualification

Automated test frameworksPythonRustC++CI/CD workflowsContainerization (Docker)Debugging skillsAttention to detailProblem-solvingCross-functional collaboration

Required

5+ years of experience in software development or test engineering, including 2+ years architecting automated test frameworks for integrated systems combining hardware, firmware, and software

Proven ability to design and scale unit, integration, and system-level automation frameworks, with strong software skills in Python, Rust, or C++ for tooling, validation pipelines, and simulation workflows

Excellent debugging skills, strong ownership, and attention to detail, with ability to operate in fast-paced, cross-functional environments

Familiarity with CI/CD workflows, containerization (Docker), telemetry/log aggregation, and automated test pipelines

Demonstrated ability to work effectively across software, hardware, and operations teams to align on delivery milestones and integration needs

Preferred

Experience in aerospace, robotics, safety-critical systems or embedded real-time applications

Hands-on experience validating embedded, real-time, networking or hardware-integrated systems, including controller, sensors/actuators, communication buses, and timing-sensitive behaviors

Familiarity with Conda, GitLab CI/CD, Grafana, version control practices, artifact repositories

Experience working with hardware-in-the-loop (HITL), simulation environments, or large-scale system integration

Strong analytical skills and experience supporting data reviews, root cause investigations, or release audits