We're looking for a Quality Assurance Engineer who is passionate about building reliable, high-quality software and solving complex technical challenges. Join the thinkorswim® charting services team and help ensure the performance, stability, and accuracy of a platform trusted by millions of traders.In this role, you'll drive test automation and quality engineering practices across critical services that power secure authentication, real-time market data, order execution, and sophisticated risk and margin calculations. Working alongside experienced engineers in an agile environment, you'll help deliver resilient, scalable systems that operate in real time and at significant scale.If you're excited by technical complexity, automation, and the opportunity to make a measurable impact on a world-class trading platform, we'd love to hear from you. •  Design, develop, and execute test strategies for backend services, APIs, distributed systems, and event-driven architectures supporting the thinkorswim® platform. •  Build and maintain automated test frameworks and validation pipelines that improve test coverage, release confidence, and overall software quality. •  Validate real-time market data, charting services, technical studies, historical data processing, scanners, watchlists, and order execution workflows to ensure accuracy, reliability, and performance. •  Partner with software engineers, product owners, and stakeholders to ensure quality is built into every stage of the software development lifecycle. •  Analyze and troubleshoot defects across complex distributed systems using logs, metrics, traces, and observability tooling. •  Support production releases, issue triage, root-cause analysis, and remediation efforts to improve platform stability and resiliency. •  Lead quality engineering initiatives by driving automation-first practices, expanding test coverage, and improving testing processes and tooling. •  Mentor team members and provide technical leadership on quality engineering best practices. What you have To ensure that we have fulfilled our promise of "challenging the status quo," this role has specific qualifications that successful candidates should have. Required Qualifications 3+ years of experience testing the thinkorswim® code base, including charting applications, market data services, trading workflows, or supporting backend systems. • Proven ability to design and execute comprehensive test strategies for backend services, APIs, and distributed systems, including service-to-service communication, messaging platforms, and event-driven architectures. •  Strong analytical skills with experience validating real-time market data, charting services, technical studies, historical data processing, order routing, and other critical backend systems using production-like data and environments. •  Expertise testing complex trading and charting platforms, including real-time market data pipelines, chart rendering services, technical study calculations, historical data processing, scanner services, watchlist synchronization, and order execution workflows, ensuring accuracy, resiliency, and performance at scale. •  Experience developing and maintaining automated testing frameworks, and current working experience with Schwab syatems and processes•  Strong troubleshooting skills in high-throughput, low-latency systems using logs, metrics, tracing, and observability tools. •  Strong technical expertise in Java, microservices, REST APIs, messaging technologies (Kafka, RabbitMQ, JMS, QDS, or similar), and CI/CD tooling including Git, Maven/Gradle, and TeamCity or GitHub Actions. •  Experience leveraging SQL and relational databases for large-scale data validation, root-cause analysis, and system verification. •  Experience collaborating closely with software engineers, product owners, and platform teams throughout the software development lifecycle. •  Strong understanding of Agile development methodologies and quality engineering best practices. •  Demonstrated ability to lead quality engineering initiatives, promote automation-first practices, and drive continuous improvements in test effectiveness and release reliability. Preferred Qualifications  Experience mentoring QA engineers and software engineers on automation, testing strategies, and quality engineering best practices. • Experience implementing contract testing, schema validation, and automated testing for event-driven and messaging-based architectures. •  Experience improving CI/CD pipelines, test observability, release validation processes, and quality engineering maturity. •  Experience with performance, load, stress, and resiliency testing using tools such as Gatling, JMeter, K6, or similar technologies. •  Experience validating distributed systems under peak market conditions, high-volume market data loads, and failure scenarios. •  Hands-on experience with automation frameworks such as Playwright, Selenium, Cypress, or similar technologies. •  Strong technical writing and documentation skills, including the creation of test strategies, test plans, and quality metrics. •  Demonstrated ability to influence technical decisions across engineering, product, architecture, and delivery teams. •  Experience serving as a technical lead or quality engineering lead on large-scale initiatives. In addition to the salary range, this role is also eligible for bonus or incentive opportunities