Senior Software Engineer - Transaction Surveillance

About this role

Senior Software Engineer - Transaction Surveillance

Req #189

Greenwich, CT, USA•

Chicago, IL, USA

Job Description

Posted Thursday, October 29, 2026 at 2:00 AM

About the Company

Interactive Brokers Group, Inc. (NASDAQ: IBKR), a member of the S&P 500, is a global financial services company headquartered in Greenwich, Connecticut, with offices in over 15 countries. Through its affiliates, Interactive Brokers provides automated trade execution and custody of securities, commodities, foreign exchange, and prediction markets on over 170 markets in numerous countries and currencies.

For more than four decades, Interactive Brokers has focused on technology, automation, and innovation to provide clients worldwide with a sophisticated, unified platform to manage their investment portfolios. We serve individual investors, hedge funds, proprietary trading groups, financial advisors, and introducing brokers.

Our culture is driven by problem-solving, efficiency, and continuous improvement. We look for individuals who are intellectually curious, collaborative, and motivated to contribute to technology that helps simplify and enhance access to global financial markets. Interactive Brokers has consistently been recognized as a top broker by respected industry sources including Barron’s, Investopedia, Stockbrokers.com, and others.

This is Hybrid role (3 days in office /2 days remote)

About the team

The Compliance Surveillance team builds the systems that detect market manipulation and financial crime across millions of client accounts. Our platforms process more than 1 billion order events a day, and their correctness supports regulatory compliance and market fairness.

The role

We are looking for a senior software engineer who specializes in testing and quality. You will design, build, and own the test frameworks and quality infrastructure for our surveillance systems. This is a software engineering role, not a test-writing role. You will write production-quality code, make system design decisions, and own the architecture of how we test, measure, and monitor quality. You will work directly with developers and data scientists, with a direct line to engineering leadership.

What you'll do

• Own the architecture of our test frameworks covering backend, frontend, and machine-learning pipelines
• Treat test infrastructure as a product: architecture, code review, maintainability standards
• Define data quality for pipelines processing 1B+ events daily
• 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

Required

• Bachelor's degree in Computer Science, Mathematics, Statistics, Physics, or a related quantitative field
• 5+ years of professional software engineering experience, with strong production-quality Python
• Solid software engineering fundamentals: 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: fixtures, plugins, parametrization, and scaling large suites
• Git and CI/CD experience (e.g., Jenkins, GitHub Actions, GitLab CI)
• Strong written and verbal communication, with close attention to detail

Strongly preferred

• Experience testing data-intensive or distributed systems (pipelines, streaming, databases, APIs), including data quality and lineage tools (Manta, Ataccama, Great Expectations)
• Monitoring and observability tools (Grafana, Prometheus, Datadog, ELK)

Benefits

• Competitive salary, annual performance-based bonus, and stock grant awards
• 401(k) retirement plan with competitive company match
• Excellent health and wellness benefits, including medical, dental, and vision benefits. 100% employer-paid medical premiums, with generous employer contributions to dental & vision plans as well.
• Wellness screening and assessments, health coaches, and counseling services through an Employee Assistance Program (EAP)
• Generous paid parental leave (up to 16 weeks paid parental leave for eligible employees)
• Company-paid basic life insurance, accidental death & dismemberment (AD&D), and short- and long-term disability coverage
• Flexible Spending Accounts (Healthcare, Dependent Care, and Commuter FSAs)
• Quarterly fitness stipend to offset costs associated with traditional gym and fitness memberships or fees
• 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 fully stocked kitchen with healthy breakfast and snack options