Software Developer In Test Jobs in Connecticut (NOW HIRING)

Posted Wednesday, July 15, 2026 at 10:00 AM

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 your Team:

On the Transactional Surveillance Technology team you will be testing infrastructure you build will be critical to maintaining the team's velocity and reliability in detecting market manipulation and financial crimes, directly supporting regulatory compliance and protecting millions of client accounts. The quality and reliability you ensure has real-world impact on market fairness and financial security

What will be your responsibilities within IBKR:

As a Software Development Engineer in Test and help protect market integrity at massive scale. You'll build and maintain the automated testing infrastructure that ensures reliability across systems processing 1+ billion order events daily—work that directly impacts the fairness and security of financial markets.

• Build scalable testing frameworks that enable our team to deploy confidently and maintain high system reliability
• Design comprehensive test suites covering unit, integration, and acceptance testing that catch issues before they reach production
• Collaborate with engineers and data scientists to embed quality practices throughout the development lifecycle
• Provide metrics and reporting on test coverage, quality trends, and system reliability
• Build and maintain monitoring and alerting systems for test infrastructure
• Develop data quality checks to ensure integrity across pipelines and databases
• Investigate and triage test failures, working with development teams to identify root causes and implement fixes

What required skill’s you need:

• Bachelor's degree in Computer Science, Mathematics, Statistics, Physics, or related quantitative field
• 3+ years of software engineering experience with strong coding skills (Python required)
• Strong experience with unit testing frameworks (pytest, unittest, etc.)
• Strong communication skills with meticulous attention to detail
• Experience with version control systems (git)

Experience & Mindset:

• Solid foundation in testing methodologies and quality assurance principles
• Strong problem-solving and analytical abilities
• Self-motivated with ability to drive projects independently

Preferred Qualifications

• Experience with data quality/lineage platforms (Manta/Ataccama)
• Background in performance/load testing tools
• API and contract testing experience
• Experience with data engineering concepts and tools
• Experience with monitoring/observability tools

• Competitive salary, annual performance-based bonus and stock grant
• Retirement plan 401(k) with competitive company match
• Excellent health and wellness benefits, including medical, dental, and vision benefits. Company paid medical healthcare premium.
• Wellness screenings and assessments, health coaches and counseling services through an Employee Assistance Program (EAP)
• Daily company lunch allowance provided and a fully stocked kitchen with healthy options for breakfast and snack
• Corporate events including team outings, dinners, volunteer activities and company sports teams
• Education reimbursement and learning opportunities

The anticipated base salary range for this role is $140,000 to $160,000 per year, based on skills, experience, and location. The offered salary is just part of the total compensation package. In addition to a competitive salary, the company offers both a discretionary cash bonus and a stock award, as well as a wide range of benefits, including healthcare, tuition reimbursement, and more.