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, cooperative, 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.
Role Overview
The Security Engineer III – SaaS Security leads structured threat modeling across the firm's SaaS applications, cloud-native platforms, APIs, and third-party SaaS integrations to identify design level risk before it reaches production. This is a hands on, technical contributor role for someone who thinks like an adversary, understands modern multi-tenant SaaS and cloud architecture deeply, and can turn complex technical exposure into clear, prioritized, business-relevant risk. You will partner closely with product and platform engineering to drive secure-by-design outcomes across high-risk systems such as trading platforms, client portals, and the APIs and integrations that connect them.
Key Responsibilities
End to End Threat Modeling (core focus)
Lead threat modeling across the full deployment gamu

📌 Security Engineer III (Mumbai)
🏢 Interactive Brokers Group
📍 Mumbai