# IT Security Specialist - Jane Street

[Janestreet](https://gurify.com/jobs?q=Janestreet) · London, United Kingdom · Posted 4 days ago

[Security](https://gurify.com/jobs/security)

[Apply on the original posting → (opens in a new tab)](https://job-boards.greenhouse.io/janestreet/jobs/8857690002)

## Job description

### About the position

We are looking for an enthusiastic, motivated and technologically curious individual with a Windows security focus to join Jane Street's IT Security team. Our team is dedicated to securing the firm's Windows and macOS computing platforms, which you will contribute to through a combination of technical hands-on work, cross-team collaboration and creative problem-solving. Responsibilities of this role will include:

- Deploying, documenting and supporting our security controls at scale

- Acting as a key contributor to our vulnerability management programme, ensuring vulnerabilities are rigorously detected and mitigated

- Providing security guidance and support to the broader IT department as well as our IT Operations Team as security incidents arise

- Developing both technical and non-technical solutions in collaboration with engineering teams that address security concerns

- Contributing to the development of our team’s operational playbooks, procedures, guidelines and technical security standards

We’re looking for someone who fully enjoys working with and being around people, takes pleasure in triaging complex problems and is able to delegate and escalate tasks effectively. This role is anything but siloed; we’ll rely on you to be a key liaison between the IT Security team and other internal technology groups to distill and communicate pertinent information. While we’re open to individuals from a range of backgrounds, someone who’s worked in a code-driven environment and has hands-on experience with security incident response is preferred.

### About you

- Have 5+ years of experience as a security or operations engineer, with a technical background rooted in Windows

- Experienced with maintaining, supporting and administering Windows platforms at scale, including Active Directory and Group Policy

- Solidly understand common attack scenarios targeting the Windows platform, as well as the protection technologies designed to mitigate them

- Strong troubleshooter, comfortable triaging security incidents and production issues; familiar with trend and log analysis, with hands-on experience using system monitoring and alerting tools to identify production disruptions

- Have hands-on experience deploying and implementing endpoint security controls at scale (anti-malware, EDR, application control, log aggregation, host-based firewalls, disk encryption, etc.)

- Comfortable with PowerShell, including experience scripting or building tooling to automate security tasks

- Knowledge of macOS and mobile device security fundamentals is a plus

- Excellent written and verbal communicator; able to explain processes clearly to colleagues across the firm

- Comfortable working in an environment with shifting priorities

- Collaborative and approachable; eager to be a team player

- Fluent in English

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

##

**Live in Janestreet’s hiring system.** Read from the company's own applicant tracking system, not reposted from a job board — so it's a real, open requisition rather than an ad that outlived the role.

We remove it as soon as it disappears at source.

## More jobs like this

- JA [Cybersecurity Engineer: Security Operations Center (SOC)](https://gurify.com/job/cybersecurity-engineer-security-operations-center-soc-at-janestreet-c45c5760d693) Janestreet · London, United Kingdom · last week
- BR [Lead Application Security Engineer](https://gurify.com/job/lead-application-security-engineer-at-brunswickgroup-5849dbce754f) Brunswickgroup · London, United Kingdom · 4 days ago
- XA [Infrastructure Security Engineer](https://gurify.com/job/infrastructure-security-engineer-at-xai-5df6888fa213) Xai · Dublin, United Kingdom · last week
- OM [Platform Security Engineer](https://gurify.com/job/platform-security-engineer-at-omnea-79e993c63a72) Omnea · London · 3 days ago
- SP [Backend Engineer - Platform Security](https://gurify.com/job/backend-engineer-platform-security-at-spotify-8a7820185afe) Spotify · London · 3 days ago
- EN [Lead Security Engineer](https://gurify.com/job/lead-security-engineer-at-encord-691754c23bc3) Encord · London · last week

```json
{"@context":"https://schema.org/","@type":"JobPosting","title":"IT Security Specialist - Jane Street","description":"\u003Ch3\u003EAbout the position\u003C/h3\u003E\u003Cp\u003EWe are looking for an enthusiastic, motivated and technologically curious individual with a Windows security focus to join Jane Street\u0026#39;s IT Security team. Our team is dedicated to securing the firm\u0026#39;s Windows and macOS computing platforms, which you will contribute to through a combination of technical hands-on work, cross-team collaboration and creative problem-solving. Responsibilities of this role will include:\u003C/p\u003E\u003Cul\u003E\u003Cli\u003EDeploying, documenting and supporting our security controls at scale\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EActing as a key contributor to our vulnerability management programme, ensuring vulnerabilities are rigorously detected and mitigated\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EProviding security guidance and support to the broader IT department as well as our IT Operations Team as security incidents arise\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EDeveloping both technical and non-technical solutions in collaboration with engineering teams that address security concerns\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EContributing to the development of our team\u2019s operational playbooks, procedures, guidelines and technical security standards\u003C/li\u003E\u003C/ul\u003E\u003Cp\u003EWe\u2019re looking for someone who fully enjoys working with and being around people, takes pleasure in triaging complex problems and is able to delegate and escalate tasks effectively. This role is anything but siloed; we\u2019ll rely on you to be a key liaison between the IT Security team and other internal technology groups to distill and communicate pertinent information. While we\u2019re open to individuals from a range of backgrounds, someone who\u2019s worked in a code-driven environment and has hands-on experience with security incident response is preferred.\u003C/p\u003E\u003Ch3\u003EAbout you\u003C/h3\u003E\u003Cul\u003E\u003Cli\u003EHave 5\u002B years of experience as a security or operations engineer, with a technical background rooted in Windows\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EExperienced with maintaining, supporting and administering Windows platforms at scale, including Active Directory and Group Policy\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003ESolidly understand common attack scenarios targeting the Windows platform, as well as the protection technologies designed to mitigate them\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EStrong troubleshooter, comfortable triaging security incidents and production issues; familiar with trend and log analysis, with hands-on experience using system monitoring and alerting tools to identify production disruptions\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EHave hands-on experience deploying and implementing endpoint security controls at scale (anti-malware, EDR, application control, log aggregation, host-based firewalls, disk encryption, etc.)\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EComfortable with PowerShell, including experience scripting or building tooling to automate security tasks\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EKnowledge of macOS and mobile device security fundamentals is a plus\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EExcellent written and verbal communicator; able to explain processes clearly to colleagues across the firm\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EComfortable working in an environment with shifting priorities\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003ECollaborative and approachable; eager to be a team player\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EFluent in English\u003C/li\u003E\u003C/ul\u003E\u003Cp\u003EIf you\u0026#39;re a recruiting agency and want to partner with us, please reach out to agency-partnerships@janestreet.com\u003C/p\u003E\u003Cp\u003E##\u003C/p\u003E","identifier":{"@type":"PropertyValue","name":"Gurify","value":"it-security-specialist-jane-street-at-janestreet-1659006897de"},"url":"https://gurify.com/job/it-security-specialist-jane-street-at-janestreet-1659006897de","datePosted":"2026-10-05","validThrough":"2026-11-23T23:59:59Z","hiringOrganization":{"@type":"Organization","name":"Janestreet","sameAs":"https://job-boards.greenhouse.io/janestreet"},"directApply":false,"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressCountry":"GB","addressLocality":"London"}}}
```

```json
{"@context":"https://schema.org/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Jobs","item":"https://gurify.com/jobs"},{"@type":"ListItem","position":2,"name":"United Kingdom","item":"https://gurify.com/jobs/united-kingdom"},{"@type":"ListItem","position":3,"name":"IT Security Specialist - Jane Street","item":"https://gurify.com/job/it-security-specialist-jane-street-at-janestreet-1659006897de"}]}
```