Top Senior Test Engineer Jobs in San Francisco, CA

Design, develop and execute automated and manual tests for router/chassis features (SONiC). Develop Python/Pytest test cases, analyze results, debug with SW/HW/Firmware teams, and drive features to GA readiness.

Lead QA for end-to-end system and user workflows by performing manual and automated testing, building and maintaining automation frameworks, integrating tests into CI/CD, validating integrations and distributed systems, tracking defects, supporting release and regression validation, and improving testing strategy and quality metrics in Agile teams.

Lead design and maintenance of automated test frameworks and suites for Salesforce applications. Validate end-to-end workflows, Apex logic, LWC components, and API integrations. Integrate tests into CI/CD, track defects, create test plans and data strategies, and collaborate with Product, Engineering, and DevOps within Agile processes.

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.

Design and implement automated test frameworks and data validation utilities for enterprise data platforms. Validate data transformations, pipelines, lineage, and performance across Databricks, Snowflake, Spark, Hadoop and cloud environments. Integrate tests into CI/CD, perform white-box and performance testing, investigate production defects, and collaborate with Data Engineering, Analytics, and business stakeholders to ensure P&C insurance data quality and regulatory readiness.

The Performance Test Engineer will define performance workloads, develop load scripts, and analyze performance metrics across various architectural frameworks.

Seeking a passionate QA Engineer with significant experience in software development and engineering, focusing on quality assurance and identity management solutions.

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.

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.

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.

Design, implement, and maintain custom test frameworks for Illumina's primary analysis software. Create and expand automated tests, troubleshoot CI/CD pipelines, investigate failures, collaborate with developers to diagnose root causes, and ensure tests are reproducible, documented, and maintainable as analysis capabilities evolve.

Design and build automated tests and validation frameworks for AWS infrastructure, IaC (Terraform/CloudFormation/Ansible), CI/CD pipelines, containers and Kubernetes. Validate networking, IAM, security controls and compliance, integrate tests into pipelines, analyze telemetry, troubleshoot failures, and support audit readiness alongside DevOps, Security and Platform teams.

Design and verify mechanical test hardware from concept through 3D models and shop drawings. Collaborate with test, software, and hardware teams to implement and improve test stations, ensure thermal and environmental performance, produce full documentation and BOMs. Hybrid on-site work as project needs require.

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.

Lead the quality engineering efforts for Replicant's AI platform by defining standards, improving testing strategies, and mentoring a QA team to ensure high-quality outputs across software systems.

Design and own AI-agent-driven test workflows and the automated verification framework. Build test context, select models and tooling, validate AI-generated code and tests, operate test automation across UI/API/mobile/data, ensure security and compliance, mentor teams, and continuously improve agent orchestration and observability.

The Senior QA Engineer is responsible for manual and automated testing of embedded systems, iOS/Android apps, and API servers, ensuring quality releases weekly.

The Lead Quality Engineer will set quality standards, mentor a QA team, improve testing strategies, and enhance automation in AI-driven workflows.

Lead test strategy and build scalable automated test frameworks for a custom Linux kernel. Validate performance, reliability, and security; develop test suites for kernel enhancements and VM software; debug low-level system issues; enhance CI/build automation; provide technical leadership and mentor junior engineers.

Senior SDET who contributes across frontend and backend systems by building and maintaining features with a strong testing mindset. Develop and maintain automated tests, improve test coverage and CI/CD, investigate bugs, support regulatory and compliance testing strategies, and balance automation with exploratory and risk-based testing.