Information Security Engineer

Who we are

Optiver isa global market maker founded in Amsterdam with officesin London Chicago Austin New York Sydney Shanghai Hong Kong SingaporeTaipeiand Mumbai. Established in1986today we are a leading liquidity provider with close to 2000 employees in offices around the world united in our commitment to improve the market through competitive pricing execution and risk management. By providing liquidity on multiple exchanges across the world in various financial instruments we participate in the safeguarding of healthy and efficient markets. We provide liquidity to financial markets using our own capital at our own risk trading a wide range of products: listed derivatives cash equities ETFs bonds and foreign currencies.

Whatyoulldo

We areseekinga motivated hands-on Information Security Engineer to join our security this role you will help protectmonitor and continuously improve the security of our global systems including cloud (AWS and M365) and on-premises a central part in risk mitigation incident response automation of security operations and embedding security best practices across our engineering mindset attention to detail and a preference for pragmatic solutions are essential to keeping our systemsoperating.

Main responsibilities include:

• Monitor daily security operationsidentifythreats investigate alerts and respond to incidents across cloud and on-prem environments.

• Strengthen Microsoft 365 and Entra ID security through Conditional Access MFA PIM Defender for Endpoint/Identity/O365 and tenant configuration hardening.

• Build andmaintainsecurity automation using Python and PowerShell with a strong focus on reducing manual processes and improving detection and response.

• Integrate systems using APIs (Graph API REST etc) to enhance security workflows.

• Perform vulnerability assessments review system configurations and develop practical mitigation strategies.

• Contribute to incident response activities including investigation containment communication and remediation.

• Work closely with engineering technology and business teams to embed security best practices.

Who you are

Optiver needs our nextInformation Security Engineerto have:

• At least 2 years(5 in more experienced roles)in an information security or technical engineering role.

• Ability to apply analytical thinking to technical problems within a fast-moving environment.

• Comfortable with both Windows and Linux environments; familiarity with common security technologies (firewalls endpoint protection log management vulnerability scanning network security).

• Solid scripting skills in PowerShell and/or Python

• Knowledge of secure Identity Management authentication principles and modern access control patterns.

• Experience using security tooling such as EDR SIEM SOAR CASB etc

• Experience securing workloadsrunning bothon-premise(bare-metal/ container)and on IaaSplatforms.

• Familiarity with identity lifecycle processes RBAC PAM and privileged identity controls.

• Understanding of vulnerability management tools (Nessus/TenableRunZeroetc) and secure configuration standards.

• Experience withdata protection DLP or information protection solutions (e.g. Microsoft Purview DLP rules classification/labelling).

Please note that we welcome interest from candidates with varying levels of experience; many successful candidates do not meet every single requirement. Ifyoureexcited about this role please apply and allow our recruiters to assess your application.

Whatyoullget

Youlljoin a culture of collaboration and excellence whereyoullbe surrounded by curious thinkers and creative problem solvers. Driven by a passion for continuous improvementyoullthrive in a supportive high-performing environment alongside talented colleagues working collectively to tackle some of the most complex problems in the financial markets.

In return for yourexpertise you will have access to a range of Optiverperks including:

• A performance-based bonus structure unmatched anywhere in the industry.

• The chance to work alongside diverse and intelligent peers in a rewarding environment.

• Trainingmentorshipand personal development opportunities.

• Daily breakfastlunchand an in-house barista.

• Gym membership plus weekly in-house chair massages.

• Regular social events including a company trip every two years.

Optiver is committed to diversity and inclusion. We encourage applications from candidates of all backgrounds and welcome requests for reasonable adjustments during the process.

QuestionsGet in touch withthe recruitment team at.

Required Experience:

IC