Top Senior Test Engineer Jobs in San Francisco, CA

Lead development of automated API, UI, and end-to-end tests for a real-time trading platform. Extend AI-assisted test generation, build scalable CI/CD test frameworks for order lifecycles and market-data streams, reduce flakiness, triage failures, mentor engineers, and drive quality and testability across the product.

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.

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.

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

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.

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.

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.

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

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.

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