Top Senior Test Engineer Jobs in San Francisco, CA

Leads R&D testing for battery-materials hardware and process development. Designs and executes experiments on laboratory and pilot-scale equipment, analyzes experimental data and system logs, identifies failure modes and root causes, implements solutions, manages test platforms, and communicates findings. The role requires expertise in reactive or thermo-mechanical systems, engineering fundamentals, Python-based data analysis, instrumentation, electronics, sensors, actuators, and measurement systems.

Designs and maintains automated testing frameworks for AI-powered applications, APIs, backend services, and distributed systems. Defines test strategies, acceptance criteria, evaluation metrics, tolerances, and quality gates for deterministic and non-deterministic software. Builds regression, integration, API, and end-to-end coverage; evaluates LLMs, agents, prompts, and tool-calling workflows; integrates testing into CI/CD; analyzes failures, telemetry, and logs; reduces flaky tests; and partners with AI, engineering, and product teams on continuous quality practices.

Build production-grade test automation infrastructure across API, integration, end-to-end, contract, regression, load, and performance testing. Develop Playwright suites, integrate automated tests with GitHub Actions release gates, create AI-assisted test generation workflows, maintain coverage dashboards, reduce flakiness, and establish performance-testing frameworks. Partner with engineers and product managers to define coverage, acceptance criteria, performance thresholds, and quality standards across the organization.

Develop and scale Python-based web test automation, emphasizing API-level validation, efficient large-scale CI execution, and zero-flake reliability. Troubleshoot complex failures using logs, network captures, and backtraces; manage containerized and virtual test environments; optimize pipelines; and collaborate with developers on shift-left quality. The role also involves adopting AI-assisted tooling, maintaining automation frameworks, conducting code reviews, and establishing engineering standards.

Owns verification and validation strategy, software testing, release coordination, risk management, requirements traceability, and design history file documentation for regulated medical-device software. Develops automated and manual test suites, leads defect resolution, supports audits and regulatory submissions, and coordinates release readiness across engineering, quality, regulatory, clinical, and commercial teams.

Designs and owns end-to-end automated testing across UI, APIs, back-end services, ML pipelines, and clinical workflows for regulated SaMD products. Builds smoke, regression, visual, post-deployment, and integration tests using Selenium and Playwright; validates tools under medical-device QMS requirements; supports CI/CD, audits, CAPAs, traceability, defect resolution, and regulatory submissions. Coordinates offshore contractors, mentors engineers, and collaborates with engineering, product, and RA/QA teams.

Design and implement software architecture, test infrastructure, and reusable tooling for aerospace vehicle integration and hardware validation. Integrate flight and ground software, refine electrical engineering specifications, support testing from proposal through flight, troubleshoot production and flight issues, and guide major test campaigns. Mentor junior engineers and support recruiting. The role involves hands-on laboratory work, on-call support, and collaboration across engineering teams for commercial and U.S. Government programs.

Develop and implement test plans for coherent optical pluggable products using photonics integrated circuits. Analyze transceiver performance, define testability requirements, validate test platforms, support fault isolation, and coordinate manufacturing integration. Use data analytics and statistical modeling to improve test yield and reduce cycle times while collaborating with development, technical, and manufacturing teams.

Own end-to-end electrical test development for novel micromachine devices, including test strategy, precision measurement, instrumentation, PCB design, firmware, mechanical fixtures, and production integration. Develop error budgets, validate data quality, document systems, and improve reliability and throughput while balancing accuracy, cost, scalability, and speed. Collaborate with device, manufacturing, and product teams to translate ambiguous requirements into measurable specifications and robust test systems.

Own the enterprise test automation strategy, scale a Playwright and JavaScript framework, expand coverage across Salesforce, MuleSoft, D365, and reporting systems, and build scalable execution and reporting infrastructure. Design QA standards, metrics, and review processes while developing AI-powered agents with Cursor for performance testing, regression analysis, and defect triage. Partner with engineering, product, business, and AI platform teams to deliver governed, reusable quality tooling.

Develop and implement test plans for coherent optical communication products, analyze transceiver performance, define testability requirements, validate platforms, support fault isolation, and improve manufacturing test yield and cycle times. The role requires collaboration with development and manufacturing teams, statistical modeling, SQL-based data analysis, and familiarity with optics and test technologies.

Develop software, hardware, test plans, instrumentation, and automated calibration sequences for coherent optical pluggable products. Collaborate with product, firmware, and DSP engineering teams to characterize optical transceivers, improve product performance, and implement testing requirements. The role requires optical communications expertise, test and measurement experience, scalable object-oriented software development, and hands-on optical and electrical equipment experience.

Own systems requirements, architecture, integration, verification, reliability analysis, and failure resolution for autonomous flying robots. Lead system bring-up, performance testing, telemetry and field-data analysis, risk assessments, test infrastructure, and cross-functional issue triage across mechanical, electrical, embedded, and autonomy teams. Establish technical standards and independently solve ambiguous, multidisciplinary reliability problems.

Designs and executes end-to-end manual and automated tests for Oura’s mobile apps, cloud services, wearable devices, data flows, and algorithms. Builds and maintains mobile and API automation frameworks, integrates testing into CI/CD pipelines, validates sensor-driven insights and wireless connectivity, investigates defects, and improves QA processes. The role also owns test strategy, documentation, quality metrics, performance testing, AI-driven testing exploration, and mentorship of junior engineers.

Designs, develops, and maintains complex software test automation frameworks, tools, libraries, and performance tests. Integrates automated testing into CI/CD pipelines, analyzes test results, enforces coding standards, reviews code, troubleshoots issues, and mentors junior engineers. Collaborates cross-functionally to support quality releases and develops reusable testing solutions using modern programming languages, cloud platforms, containerization, API testing, and automation technologies.

Lead end-to-end mechanical design, 3D CAD modeling, structural and thermal analysis, tolerance analysis, and system integration for complex fusion hardware. Translate physics requirements into robust components, apply DFM/DFA principles, prepare GD&T drawings and design reviews, and provide cross-functional technical leadership across physics, systems engineering, and manufacturing teams.

Validate and characterize high-speed analog and mixed-signal IPs, test chips, and ASIC products. Develop automated lab scripts and 24/7 testing flows, configure devices, operate measurement equipment, analyze results, debug hardware, review PCB and package designs, document test procedures, support reliability and ATE testing, and collaborate with design and system teams.

Develops electrical, optical, and thermal test plans, algorithms, hardware, software, and automated production test solutions for photonic integrated circuits. Responsibilities include device characterization, instrument control, motion and vision systems, test station qualification, Gage R&R, SPC, documentation, data analysis, troubleshooting, and cross-functional project coordination.

Owns reliability for complex satellite hardware from concept through production and on-orbit operations. Develops qualification and validation testing, automates test equipment in Python, establishes reliability targets and mission profiles, leads DFMEA and fault-tree analyses, builds reliability models, performs Weibull and physics-of-failure analysis, investigates failures, coordinates destructive analysis, analyzes telemetry, and mentors engineers.

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 end-to-end flight test campaigns for autonomous delivery aircraft, define system-level objectives and success criteria, assess hardware/software readiness, analyze flight data for anomalies and trends, produce deployment-readiness recommendations, and build automated test tooling to increase test capacity and precision. Collaborate cross-functionally and travel for flight testing.

The Senior Platform System Vehicle Test Engineer will develop and execute vehicle-level testing, analyze system requirements, and report test results while ensuring vehicle safety for autonomous systems.

The Senior ATE Wafer Test Engineer will manage projects with vendors, perform yield analysis, conduct wafer testing, and ensure compliance with manufacturing standards.

Lead performance and reliability test campaigns for motors, propulsion systems, and actuators. Design and execute electromechanical, thermal, and structural tests; analyze failures; validate models and FEA; develop automated data-acquisition and production test strategies; collaborate with mechanical, electrical, firmware, and manufacturing teams.

Lead design validation and test planning for RF avionics products across development, certification, and high-volume production. Build test systems, run end-to-end test campaigns, triage field failures, coordinate cross-functional teams and vendors, and support certification and manufacturing readiness for communication and navigation systems.