TradeStation International Ltd · 2 months ago
Principal SDET Brokerage Services
United States
Full-time
Hybrid
Senior Level, Lead/Staff
$141K/yr - $153K/yr
7+ years expTradeStation is an online brokerage firm focused on delivering an ultimate trading experience for active traders and institutions. They are seeking a Principal SDET to drive the development of high-performance automated test frameworks for their OXS platform, collaborating closely with development and DevOps teams to ensure quality at scale.
AdviceFinancial ServicesTrading Platform
Responsibilities
Lead design and development of scalable automated test frameworks for validating microservices, streaming pipelines, and event-driven systems
Build mocking and simulation frameworks that emulate complex upstream services and dependencies (Kafka, market data, order routing, etc.)
Integrate test execution seamlessly with GitLab CI/CD pipelines, enabling full automation and parallelized test runs
Enable developers to run complete regression suites locally, independent of shared environments
Collaborate with developers and SDETs to ensure new functionality is covered by comprehensive test suites (functional, regression, performance, reliability)
Contribute to framework extensibility and promote reusable testing libraries
Conduct root cause analysis for test failures and production issues, identifying system fragility and design risks
Raise risks early to engineering leadership and influence design decisions to improve quality and reliability
Partner with DevOps on test environment automation, data provisioning, and result visualization
Mentor team members in advanced testing techniques, mock-based architecture validation, and performance measurement
Qualification
Required
Strong experience with C# (required)
Proven record of building and maintaining enterprise-grade automated test frameworks
Strong understanding of distributed systems, concurrency, and event-driven architectures
Experience with Kafka, REST/WebSocket APIs, and microservice orchestration
Proficiency in mocking, stubbing, and service virtualization for upstream dependency isolation
Expertise in CI/CD integration, especially GitLab, Dockerized environments, and dynamic test runners
Experience measuring and tuning system performance, stability, and reliability
Ability to break software methodically and reproduce complex defects within defined timelines
Strong communication and documentation skills; comfortable engaging with senior engineers and leadership
Familiarity with cloud-native architectures (AWS), containerization (Docker/Kubernetes), and observability tooling (Datadog, Grafana)
7+ years of experience in software quality engineering or test framework development
Bachelor's Degree in Computer Science, Engineering, or equivalent experience
Preferred
Experience with C++ or Python for automation and integration testing (useful but secondary)
Experience using AI to test systems in financial services or similarly regulated, low-latency environments preferred
Experience testing low-latency trading systems or high-throughput financial services preferred
Prior experience in SDET leadership or architecture-level test framework roles preferred
Knowledge of NoSQL, Redis, SQL, and message brokers preferred
Exposure to AWS MSK, ECS/Fargate, ElasticCache, and event simulation environments preferred
Benefits
Collaborative work environment
Competitive Salaries
Yearly bonus
Comprehensive benefits for you and your family starting Day 1
Unlimited Paid Time Off
Flexible working environment
TradeStation Account employee benefits, as well as full access to trading education materials
Company
TradeStation International Ltd
For nearly forty years, TradeStation has been dedicated to applying the best in technology for the benefit of the trader.
501-1000 employees
H1B Sponsorship
TradeStation International Ltd has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
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Trends of Total Sponsorships
2025 (1)
2022 (1)
2020 (1)
Funding
Current Stage
Late StageRecent News
2025-09-26
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