Principal SDET

TradeStation

(remote)

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JOB DETAILS

SKILLS

Amazon Web Services (AWS), Application Programming Interface (API), Artificial Intelligence (AI), Brokerage, Cloud Architecture, Communication Skills, Computer Science, Concurrency, Continuous Deployment/Delivery, Continuous Integration, DevOps, Distributed Computing, Docker, Documentation, Ecosystems, Employee Benefits, Failure Analysis, Financial Services, Financial Systems, Functional Testing, High Throughput, Identify Issues, Integration Testing, Leadership, Machine Tool, Mentoring, Message Broker, Microservices, Microsoft C# (C Sharp), NoSQL, Performance Metrics, Performance Testing, Performance Tuning/Optimization, Problem Solving Skills, Process Development, Python Programming/Scripting Language, Quality Assurance Methodology, Quality Engineering, Quality Management, REST (Representational State Transfer), Redis, Regression Testing, Reliability Engineering, Root Cause Analysis, SQL (Structured Query Language), Scalable System Development, Simulation, Software Design for Test (SDET), Software Engineering, Team Player, Test Automation, Test Design, Test Harness, Test Plan/Schedule, Test Suite, Testing, Trading Systems, Virtualization

POSTED

25 days ago

#WeAreTradeStation

Who We Are:

TradeStation is the home of those born to trade. As an online brokerage firm and trading ecosystem, we are focused on delivering the ultimate trading experience for active traders and institutions. We continuously push the boundaries of what's possible, encourage out-of-the-box thinking, and relentlessly search for like-minded innovators.

At TradeStation, we are building an AI-First culture. We expect team members to embrace AI as a core part of their daily workflow, whether that’s using AI to accelerate development, enhance decision-making, improve client outcomes, or streamline internal processes. We hire, grow, and promote people who can harness AI responsibly and creatively. We treat AI as a partner in problem-solving, not just a tool; following our governance standards to ensure AI is used ethically, securely, and transparently. If you join us, you’re joining a culture where AI is how we work.

Are you ready to make yourself at home?

What We Are Looking For:

We’re seeking a Principal SDET to drive the development of high-performance automated test frameworks for our OXS platform — TradeStation’s next-generation order execution system. This role is for a senior technical expert who thrives on breaking complex distributed systems, designing comprehensive test automation, and ensuring quality at scale. You’ll collaborate closely with development and DevOps teams to ensure our test infrastructure is developer-friendly, deterministic, and dependency-free, capable of running both locally and in CI/CD (GitLab) pipelines.

What You’ll Be Doing:

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

The Skills You Bring:

Strong experience with C# (required)
Experience with Python for automation and integration testing (useful but secondary)
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)
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

Minimum Qualifications:

7+ years of experience in software quality engineering or test framework development
Bachelor’s Degree in Computer Science, Engineering, or equivalent experience

What We Offer:

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

#LI-Remote

About the Company

TradeStation

TradeStation Group, Inc., through its principal operating subsidiaries, TradeStation Securities, Inc. and IBFX, Inc. offers the TradeStation analysis and trading platform to the active trader and certain institutional trader markets. The TradeStation platform offers electronic order execution and enables clients to design, test, optimize, monitor and automate their own custom equities, options, futures and forex trading strategies. TradeStation acquired IBFX Holdings, LLC in November 2011, expanding TradeStation's forex business in the U.S. and globally. TradeStation is a wholly owned subsidiary of Monex Group, Inc., one of the largest online financial services providers in Japan.

TradeStation Securities, Inc. (Member NYSE, FINRA, SIPC, NSCC, DTC, OCC & NFA) is a licensed securities broker-dealer and a registered futures commission merchant, and also a member of the Boston Options Exchange, Chicago Board Options Exchange, Chicago Stock Exchange, International Securities Exchange and NASDAQ OMX. Its TradeStation Prime Services division, based in New York, seeks to provide prime brokerage services, including securities lending, to small and mid-sized hedge funds and other firms. IBFX, Inc. (Member NFA), a Retail Foreign Exchange Dealer (RFED), and IBFX Australia Pty. Ltd., authorized and regulated by the Australian Securities and Investment Commission, provide the company's forex brokerage offering. The company's technology subsidiary, TradeStation Technologies, Inc., develops and offers strategy trading software tools and sub ion services. TradeStation Europe Limited is an FSA-authorized brokerage firm that introduces UK and other European accounts to TradeStation Securities, Inc. and IBFX, Inc.

Monex Group, Inc. (Tokyo Stock Exchange 1st section: 8698; Chairman and CEO: Oki Matsumoto) provides online investment and trading services for retail and institutional customers around the world through its subsidiaries, including Monex in Japan, TradeStation in the U.S. and Europe, Monex Boom in Hong Kong and IBFX for forex business. Monex Group is pursuing its "Global Vision" strategy to establish a truly global online financial institution that creates positive synergies for all stakeholders.

Its main subsidiary, Monex Inc., one of the largest online securities brokerages in Japan, provides advanced and unique financial services to its nearly 1 million individual investors. Monex Group's services also cover M&A advisory, debt and equity underwriting, asset management focusing on alternative investments, investment education and other investment banking functions in Japan.

COMPANY SIZE

100 to 499 employees

INDUSTRY

Financial Services

FOUNDED

1982

WEBSITE

http://www.tradestation.com/