Cybersecurity Engineer - Detection and Response

Jane Street is hiring a Cybersecurity Engineer - Detection and Response in Cybersecurity — Hong Kong, Hong Kong.

About the Position

We're looking to add a passionate Cybersecurity Engineer to our Hong Kong or Singapore office to help protect Jane Street's employees, data and infrastructure from the wilds of the internet. Our Cybersecurity Engineers are responsible for developing and using monitoring tools to guard the firm, as well as handling incident response and remediation when a threat is found.

Our team considers itself to be tapped into the developments happening within the broader cybersecurity space, and able to tell the difference between the latest cool hack by security researchers and what actually matters in our day-to-day. In this role, you'll carefully consider the context of our decisions as we think about the trade-offs we're making in our approach to resolving cybersecurity issues.

We'll expect you to apply a methodical approach to performing unstructured investigations to locate and repair the source of a security issue. While there will be an element of operational coverage, your time will also be spent on projects to improve our detection capabilities, automation and efficiencies, as well as performing threat hunts, allowing you to grow your skill set and impact.

You will also act as an ambassador of best practices to the rest of the firm. All of our team members understand and practise good personal cybersecurity hygiene, and are able to talk to others about it.

About You

• Bachelor's degree in computer science, engineering, information systems or equivalent experience preferred
• An avid follower of cybersecurity news
• A strong scripter; you should be able to write scripts that are clear, general and could be integrated into existing tooling using a fully featured programming language
• Comfortable and interested in managing your code and configs in version control, and have a working knowledge of your editor (we don't care which though)
• Familiar with threat modelling and able to clearly communicate your understanding of the trade-offs we're making to internal stakeholders
• 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 attitude about what you know and don't know; not afraid to ask questions and admit mistakes
• Curious problem solver with a positive, collaborative attitude
• Programming experience is a plus
• Fluent in English

If you're a recruiting agency and want to partner with us, please reach out to agency-partnerships@janestreet.com.

Build a standout application

For the Cybersecurity Engineer - Detection and Response at Jane Street, reviewers look for concise evidence over buzzwords. Mirror the language of the posting sparingly, quantify support or delivery outcomes, and show how you handled ambiguity, time-zone collaboration and user empathy. Keep your resume to impact, keep your cover note to one page, and link to artifacts — tickets resolved, docs shipped, dashboards owned — that prove you can operate in a fast-moving Web3 team. Prepare to discuss a time you turned a confusing user report into a clear fix and how you measure quality in support and operations.

Web3 hiring values reliability: on-time follow-through, clear writing, and a track record of improving runbooks and tooling. Treat the application as a work sample. For interviews, be ready to walk through how you prioritize across time zones, handle a difficult user, and decide when to escalate versus resolve directly. Show how you document decisions so the next teammate benefits.

In a distributed Web3 org, trust builds through written clarity. Use the cover note to demonstrate it. Add links to public work, keep formatting scannable, and close with a clear ask. Hiring managers skim — make impact obvious in the first half-page.

Career growth in Web3 rewards continuous learning. Follow protocol changelogs, practice with testnets, and contribute to open issues. Small, consistent contributions compound into credibility more than one-off credentials.