Hudson River Trading (HRT) is seeking an experienced Security Engineer to join our Information Security team in Mumbai. In this role, you will help design, build, and maintain solutions that protect HRT’s global infrastructure, systems, and data within one of the world’s most advanced computing environments. You will have the opportunity to build and harness AI tools to solve cutting edge security problems. This is a senior-level, hands-on individual contributor role in cybersecurity, spanning both operations and compliance domains.  From an operational standpoint, you will be responsible for detection engineering, threat hunting, incident response, cyber threat intelligence analysis, and adversary emulation exercises for our global infrastructure and systems. You will also serve as HRT’s Designated Officer in India for applicable regulatory compliance purposes. Approximately 25% of the role will focus on regional regulatory and governance responsibilities, including control assessments, risk management, evidence collection and reporting, and coordination with Compliance, Legal, Engineering, and other internal stakeholders, as well as auditors and regulators. This is not a people management position. We are looking for an experienced engineer who can independently own these responsibilities while remaining deeply involved in hands-on security work. Responsibilities • Partner with global Information Security, Compliance, Legal, and Engineering teams to support applicable regulation and local cybersecurity obligations • Translate regulatory and security requirements into practical technical controls, implementation guidance, evidence, and reporting • Assess security controls against applicable regulations and industry-standard frameworks, document risks and gaps, and coordinate remediation with accountable owners • Build strong cross-functional relationships with HRT’s global teams, auditors, vendors, and other external stakeholders • Help maintain HRT’s security detection and response program to protect our data and intellectual property from both internal and external threats • Hunt for, detect, and respond to malicious activity and anomalous events on HRT’s devices and networks • Conduct cyber threat intelligence research to identify relevant threat actors, and perform adversary emulation and purple teaming exercises  • Investigate security events and support incident response, including any required regional coordination, documentation, and reporting • Work an on-call rotation on a predefined schedule Qualifications • 5+ years of experience in security engineering • Experience with red teaming and penetration testing tools and techniques • Firm grasp of emerging AI security threats and mitigating controls  • Experience using log analysis platforms such as ELK and Splunk • Experience building, deploying, and supporting automated systems (Python preferred) • Strong security fundamentals and experience working with Linux systems and command-line tools • Experience supporting security governance, risk, compliance, or regulatory requirements, preferably within a heavily regulated industry • Experience collaborating across technical and non-technical teams and communicating clearly with engineers, business stakeholders, auditors, and regulatory stakeholders • Strong troubleshooting, organizational, and project management skills, with the ability to independently drive work from problem definition through implementation • Familiarity with security frameworks such as NIST, CIS, and SEBI CSCRF is preferred • Experience working independently to deliver high-quality completed work Culture Hudson River Trading (HRT) brings a scientific approach to trading financial products. We have built one of the world's most sophisticated computing environments for research and development. Our researchers are at the forefront of innovation in the world of algorithmic trading. At HRT we welcome a variety of expertise: mathematics and computer science, physics and engineering, media and tech. We’re a community of self-starters who are motivated by the excitement of being at the cutting edge of automation in every part of our organization—from trading, to business operations, to recruiting and beyond. We value openness and transparency, and celebrate great ideas from HRT veterans and new hires alike. At HRT we’re friends and colleagues – whether we are sharing a meal, playing the latest board game, or writing elegant code. We embrace a culture of togetherness that extends far beyond the walls of our office. Feel like you belong at HRT? Our goal is to find the best people and bring them together to do great work in a place where everyone is valued. HRT is proud of our diverse staff; we have offices all over the globe and benefit from our varied and unique perspectives. HRT is an equal opportunity employer; so whoever you are we’d love to get to know you. Please be advised: Use of AI tools by an applicant during interviews or assessments is strictly prohibited, unless otherwise instructed or agreed upon. We employ various methods to evaluate the authenticity of candidate responses. If we determine that AI assistance was used by an applicant during an interview or an assessment, we reserve the right to immediately end the interview or assessment, disqualify the applicant’s candidacy and/or rescind any job offers extended. You can review our Global Applicant Privacy Notice, which explains how we process applicant information.