Cybersecurity Engineer - 2027 Summer Internship

Jane Street SG; Hong Kong; On-site; HKD 89,000 - 134,000; Part time

Job summary

Jane Street is seeking a Cybersecurity Engineer intern for a 2027 Summer internship in Hong Kong. You will pair with full-time mentors, work on real-world security projects, and learn how to guard against cyber threats while building automation and tooling.

You should be pursuing a computer science or related degree and show a strong programming aptitude with a curiosity for security and technology. The role emphasizes learning, collaboration, and thoughtful security decisions under pressure.

Qualifications

• Majoring in computer science or a related field.
• Passion for cybersecurity and technology.
• Strong programming aptitude.
• Familiar with editors and version control.
• Able to explain cybersecurity decisions.
• Willing to learn and adapt.

Responsibilities

• Guard the firm from cyber threats through investigations and incident response.
• Build tools and automation to streamline workflows and improve capabilities.
• Collaborate with mentors and contribute to real-world projects.
• Learn development practices to detect, respond to security events at scale.

Skills

Programming

Learning mindset

Communication skills

Team collaboration

Curiosity

Threat modeling

Education

Computer science or related field

Job description

Cybersecurity Engineer - 2027 Summer Internship

About the position Our goal is to give you a real sense of what it's like to work at Jane Street full time while also providing a truly unparalleled educational experience. As an intern, you'll be paired with full-time employees who act as mentors, collaborating with you on real-world projects we actually need done. We’re looking for passionate and inquisitive students interested in security and technology to join us in our Hong Kong office for a Cybersecurity internship. Our Cybersecurity Engineers are responsible for being on the front lines of guarding the firm from cyber threats through investigations and incident response, as well as building tools and automation to streamline, automate, and enhance workflows, and grow our capabilities. Our Cybersecurity team is a skilled group of programmers and security experts who are dedicated to keeping the firm safe. We consider ourselves to be tapped into developments in the broader cybersecurity space, and we can tell the difference between the latest cool hack by security researchers and what actually matters in our day-to-day work. While wearing the hat of an investigator, you’ll be investigating alerts, digging through activity chains, and hunting and responding to evil. You’ll gain an understanding of a wide variety of log sources, systems, and tooling, primarily in-house developed or open source. While wearing the hat of an engineer, you’ll learn good development practices and solve real problems with code so that we can detect and respond better, faster, and at scale. You will also learn how to act as an ambassador of best practices to the rest of the firm. A key part of our mission is to bring everyone at the firm along with us on the cybersecurity journey, and you should be excited to learn how we think about security, trade-offs, and sustainability, and to educate the firm about risk and best practices with that in mind. Learn more about Jane Street's internship program here.

Currently majoring or planning to major in computer science or a similar field

Interested in cybersecurity and technology in your personal life, through activities such as CTFs, home labbing, and/or personal development projects

A strong programmer who can demonstrate high potential and an aptitude for learning

Interested in your tools, including your editor, computer environment, version control, etc.

Familiar with threat modeling and able to clearly communicate your understanding of trade-offs when it comes to security, risk, and usability

Able to explain the cybersecurity decisions you’ve made in your own life, and how you’ve approached thinking about those decisions

Able to adapt to changing scenarios and make challenging decisions under pressure

Humble about what you know and don’t know; not afraid to ask questions and admit mistakes

A curious problem solver with a positive, collaborative attitude

Someone who demonstrates perseverance and grit when investigating and learning new things beyond just a surface-level understanding

Jane Street is a quantitative trading firm with offices in New York, London, Hong Kong, Singapore, and Amsterdam. We are always recruiting top candidates and we invest heavily in teaching and training. The environment at Jane Street is open, informal, intellectual, and fun. People grow into long careers here because there are always new and interesting problems to solve, systems to build, and theories to test.

More than twenty years after our founding, it still feels like we’re just getting started.

Jane Street is a quantitative trading firm with offices in New York, London, Hong Kong, Singapore, and Amsterdam. We are always recruiting top candidates and we invest heavily in teaching and training. The environment at Jane Street is open, informal, intellectual, and fun. People grow into long careers here because there are always new and interesting problems to solve, systems to build, and theories to test.

More than twenty years after our founding, it still feels like we’re just getting started.