Senior Software Engineer, Test Infrastructure & Quality Platforms

Interactive Brokers Group•Greenwich, CT
•$180,000 - $220,000•Hybrid

About The Position

Interactive Brokers is seeking a senior software engineer specializing in testing and quality to design, build, and own test frameworks and quality infrastructure for the Compliance Surveillance team. The team builds systems that detect market manipulation and financial crime across millions of client accounts, processing more than 1 billion order events a day. The correctness of these systems supports regulatory compliance and market fairness. This is a software engineering role, not a test-writing role. The engineer will write production-quality code, make system design decisions, and own the architecture for testing, measuring, and monitoring quality. The role involves working directly with developers and data scientists and maintaining a direct line to engineering leadership. The position is hybrid, with three days in the office and two days remote.

Requirements

  • Bachelor's degree in Computer Science, Mathematics, Statistics, Physics, or a related quantitative field.
  • At least 5 years of professional software engineering experience, including strong production-quality Python.
  • Solid software engineering fundamentals, including data structures, code review, and system design.
  • Experience designing and building a test framework, or a significant part of one, and maintaining it over time.
  • Deep pytest experience, including fixtures, plugins, parametrization, and scaling large suites.
  • Experience with Git and CI/CD, such as Jenkins, GitHub Actions, or GitLab CI.
  • Strong written and verbal communication skills and close attention to detail.

Nice To Haves

  • Experience testing data-intensive or distributed systems, including pipelines, streaming, databases, or APIs.
  • Experience with data quality and lineage tools such as Manta, Ataccama, or Great Expectations.
  • Experience with monitoring and observability tools such as Grafana, Prometheus, Datadog, or ELK.

Responsibilities

  • Own the architecture of test frameworks covering backend, frontend, and machine-learning pipelines, with a scalable Python/pytest framework at the core.
  • Treat test infrastructure as a product by establishing architecture, code review, and maintainability standards.
  • Build observability capabilities, including dashboards, flaky-test detection, failure-trend reporting, and alerting.
  • Define data quality for pipelines processing more than 1 billion events daily, covering completeness, accuracy, and lineage.
  • Architect integration, performance, and contract testing for distributed, event-driven systems.
  • Drive cross-team root-cause triage, diagnose systemic issues, and identify architectural fixes.
  • Raise engineering quality standards across development and data science.

Benefits

  • Competitive salary, annual performance-based bonus, and stock grant awards.
  • 401(k) retirement plan with competitive company match.
  • Medical, dental, and vision benefits, including 100% employer-paid medical premiums and generous employer contributions to dental and vision plans.
  • Wellness screening and assessments, health coaches, and counseling services through an Employee Assistance Program.
  • Paid parental leave of up to 16 weeks for eligible employees.
  • Company-paid basic life insurance, accidental death and dismemberment insurance, and short- and long-term disability coverage.
  • Flexible Spending Accounts for healthcare, dependent care, and commuting.
  • Quarterly fitness stipend for gym and fitness-related costs.
  • Education reimbursement and professional development opportunities.
  • Legal services, telehealth access, and voluntary insurance options.
  • Backup child and adult care support through Care.com.
  • Daily lunch allowance and a fully stocked kitchen with healthy breakfast and snack options.
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