Top Senior Test Engineer Jobs in San Francisco, CA

Senior SDET responsible for building test strategies, developing automation frameworks and tools, leveraging AI to augment testing, writing test plans for functional/compliance use cases, automating high-value tests, participating in requirements analysis, diagnosing issues, and collaborating with product, security, and engineering teams to improve platform quality and reliability.

Design, build, and maintain end-to-end automated test suites for HeartFlow's SaMD pipeline (UI, API, ML/services). Lead post-deployment verification, golden-dataset regression for ML, WebGL visual regressions, tool validation under QMS, CI/CD integration, and mentor/coordinate offshore test engineers while producing traceable test documentation for regulatory needs.

Lead process development for lab-scale battery commissioning and testing. Develop and optimize test procedures, documentation, and automation using Python and in-house software. Ensure safety, data integrity, and cross-functional alignment while supporting deployment, maintenance, and training of test systems.

Design, develop, and own component-to-system-level test strategies for energy storage products. Design electromechanical and high-voltage test systems, troubleshoot test stands, select DAQ and sensors, analyze large test datasets, report findings, and lead continuous improvement and mentorship of junior staff.

Design and execute test plans to achieve UL1998 certification and harden bootloaders. Review firmware, develop test code and frameworks (C, Python), build hardware test fixtures and instrumented automated test benches, and document traceability between safety requirements and test artifacts for compliance.

Serve as the end-to-end Test Director for integrating, verifying, and flight testing Hivemind autonomy on small UAS. Own test readiness and execution, plan and run fly-fix-fly campaigns, set test strategy and success criteria, lead cross-functional teams, manage risk and safety-of-flight, define test infrastructure (SIL/HIL/simulation), approve procedures, document results, and report to leadership and customers.

Design, build, and maintain scalable test automation frameworks and tooling (Playwright, C#, JS/TS). Integrate automated tests into CI/CD, develop end-to-end, integration, and performance tests, apply AI techniques for test generation and defect detection, troubleshoot system issues, mentor QA teams, and drive automation and quality engineering best practices.

The Senior Test Engineer designs and operates complex mechanical and electrical systems for testing jet engines, ensuring quality and performance metrics are met and improving test capabilities.

Senior Test Engineer responsible for designing and executing functional, regression, integration, and API tests for C#/.NET web and enterprise applications. Build and integrate automated Selenium and C# API tests into Azure DevOps CI/CD pipelines, track defects, and support manual testing (exploratory, UAT) while collaborating with Agile teams to ensure high-quality delivery.

Lead quality strategy and testing for the iOS Games SDK. Design and implement automated tests, build supporting tools and infrastructure, debug SDK issues, perform manual testing for hard-to-automate features, create test games and samples, and analyze operational data to improve test stability and developer experience.

Lead hardware test and reliability efforts for autonomous drones: define and execute validation strategies from prototype to production, perform failure analysis, drive corrective actions, contribute design-for-reliability, and use telemetry and data (Python/SQL/AI) to develop prognostics and reliability specs.

Lead end-to-end system integration and validation of electro-mechanical and avionics hardware. Design and build test infrastructure, develop automated and manual procedures, run environmental and functional tests, debug electrical systems, perform failure analysis, support flight qualification and launch readiness, and collaborate with hardware, firmware, and software teams to improve test coverage and reliability.

Design, build, and test software for spacecraft and ground systems across the full stack. Develop flight and real-time control software, simulation and hardware-in-the-loop testing frameworks, integrate with hardware teams, support system bring-up and on-orbit operations, and create tooling for automation and mission operations in resource-constrained, high-reliability environments.

Lead design, deployment, and sustainment of SIL/HIL/EOLT test systems for long-range drones. Build orchestration software, automation, data capture, and dashboards; integrate with embedded hardware and instrumentation; drive root-cause analyses, CI validation gates, and production readiness. Support on-call rotations and field/manufacturing installations, targeting measurable improvements in test coverage, cycle time, and defect escape rates.

Lead design and execute end-to-end validation for embedded access-control firmware. Build HIL automation, test drivers and middleware, debug hardware/software interactions with lab instruments, validate network/security stacks and communication protocols, mentor junior engineers, and collaborate with hardware and software teams to ensure testability and product reliability.

Design, build, and deploy lab test equipment and test stands for iron-air battery cells, modules, and supporting electronics. Develop mechanical and fluid handling systems, perform engineering analysis (FEA, heat transfer, fluid mechanics), collaborate with electrical and operations teams to diagnose and keep tests online, create documentation and change management, train technicians, and ensure safety.

Lead design verification and validation testing for AMU PCBA and panel assemblies. Develop DVP&Rs, verify communication protocols (CAN-FD, Ethernet, RS485), validate sensing, actuation, power distribution, and safety/fault management. Automate tests (Pytest), analyze data, report results, and collaborate with hardware/firmware teams to root-cause issues.

Lead system- and interface-level verification testing for multi-day battery products. Develop risk-based test strategies, execute and analyze high-fidelity test data (including vibration), drive DFMEA, mentor engineers, influence design for robustness, standardize test tools/workflows, and coordinate multi-site and external lab test execution.

Lead design and implementation of AI-first testing frameworks and automation to validate LLM integrations and agentic Product Led Growth workflows. Perform white-box testing, identify and fix quality gaps, implement human-in-the-loop model evaluation, and collaborate cross-functionally to integrate quality across the agile delivery lifecycle.

Own end-to-end manufacturing test readiness: design and implement automated test equipment and Python-based test software, analyze MES/manufacturing data to drive yield and test-time improvements, lead production investigations and root-cause analysis, support NPI, and maintain hardware-in-loop CI and high software quality.

The role involves developing test strategies for autonomous vehicles, implementing metrics and test plans, analyzing results, and leading cross-functional teams to ensure system performance and safety.

Develop, release, and support automated manufacturing test solutions for sensors and ECUs across PCB, module, system, and vehicle levels. Create test scripts, control instruments, capture and analyze test data, collaborate with electrical and software teams, and drive continuous improvement and test coverage.

Lead firmware validation and integrated systems testing for Vega™ weaving machines: create and run manual/automated test cases, perform deep RCAs across firmware and electro-mechanical boundaries, maintain firmware quality metrics, block failing releases, and build diagnostic and logging tools to improve uptime and reliability.

The Electrical Test Engineer will develop and maintain tests, bridge between engineering and manufacturing, and ensure reliable testing for electronic components and systems.

Lead development of scalable test strategy and infrastructure across legacy and microapp platforms. Build end-to-end UI automation, API and contract tests, integrate suites into CI/CD, design performance/load tests, maintain test environments, and champion quality practices while partnering with engineering and product teams.