Staff Security Engineer - Identity & Access Management

Job description

Job Description
At LinkedIn, our approach to flexible work is centered on trust and optimized for culture, connection, clarity, and the evolving needs of our business. The work location of this role is hybrid, meaning it will be performed both from home and from a LinkedIn office on select days, as determined by the business needs of the team.
This role will be hybrid in LInkedIn’s Mountain View office location.
About the team
LinkedIn's members entrust us with their information every day and we take their security seriously. Our core value of putting our members first powers all the decisions we make, including how we manage and protect the data of our members and customers. Information Security at LinkedIn is dedicated to protecting and securing business-critical member data and company assets. Our core mission is to empower LinkedIn to create a secure and thriving platform for every member of the global workforce. The Enterprise & Identity Security team strives to proactively safeguard our corporate identity and infrastructure against external and internal threats and bad actors. You will strive to proactively safeguard our corporate infrastructure and digital assets by identifying, assessing, and mitigating security risks across cloud/SaaS environments, identity systems, endpoints, and essential business workflows. You will operate at the intersection of cloud infrastructure, identity management, software development, and mission-critical security workflows.
Responsibilities:

• Lead the architecture, design, and evolution of enterprise Identity and Access Management (IAM) platforms and services, enabling secure and scalable access across the organization.

• Engineer and deliver new identity capabilities that improve security, user experience, automation, and operational efficiency.

• Drive modernization initiatives by re-architecting legacy identity systems into resilient, cloud-ready, and highly scalable platforms.

• Design solutions that address performance, reliability, scalability, and availability challenges across identity infrastructure.

• Define and execute the long-term technical strategy and roadmap for identity platforms, aligning with business growth and security objectives.

• Partner closely with Security, Infrastructure, Product, and Engineering teams to integrate identity services into enterprise applications and platforms.

• Establish engineering best practices, architectural standards, and governance models for identity systems and services.

• Lead complex technical initiatives from concept through implementation, influencing cross-functional stakeholders and driving execution at scale.

• Evaluate emerging technologies and industry trends to continuously improve identity architecture and platform capabilities.

• Mentor and guide engineers, fostering technical excellence and a culture of innovation within the organization.

• Build platforms and services that support Zero Trust principles, strong authentication, authorization, and lifecycle management.

• Ensure identity systems are designed to meet compliance, audit, and regulatory requirements while maintaining a seamless user experience.

• Assess new and existing applications and system deployments for vulnerabilities and design flaws, and prioritize remediation efforts based on risk.

• Devise and bolster defenses through secure-by-default frameworks, architectures, and processes.

• Maintain and build improvements to systems supporting supply chain assurance.

• Evaluate new products and technologies, including potential acquisitions.

• Respond to external vulnerability researcher inquiries and vulnerability reports.

• Educate and advocate for security improvement throughout the LinkedIn ecosystem through mentorship and coaching.

Qualifications
Basic Qualifications:

• BA/BS Degree in Computer Science, Cyber Security, or related technical discipline, or related practical experience.

• 5+ years of experience in Identity & Access Management, Active Directory, workforce identity lifecycle management, role based access, authentication, authorization, and Single Sign-On (SSO)

• 5+ years experience and in-depth knowledge of application security, authentication and security protocols, cryptography, supply chain security and mobile security.

• 5+ years experience in various security assessment methodologies such as threat modeling, design reviews, penetration testing and vulnerability assessment.

• Experience with programming languages such as Java, GoLang or Python

Preferred Qualifications:

• Experience designing, building, and modernizing enterprise Identity and Access Management (IAM) platforms (such as Microsoft Entra ID), including developing new capabilities, re-architecting legacy systems, and driving large-scale identity transformations.

• Proven ability to solve scalability, reliability, and performance challenges while creating future-ready identity architectures that support business growth and evolving

Interview problems reported for LinkedIn

Reported by candidates and public write-ups, not by LinkedIn. Practise each one here:

• Maximum Subarray — Medium
• Valid Parentheses — Easy
• Number of Islands — Medium
• Maximum Product Subarray — Medium
• Minimum Window Substring — Hard
• Search in Rotated Sorted Array — Medium
• Lowest Common Ancestor of a Binary Search Tree — Medium
• Maximum Depth of Binary Tree — Easy
• Serialize and Deserialize Binary Tree — Hard
• Merge Intervals — Medium
• Two Sum — Easy
• Merge Two Sorted Lists — Easy
• Merge K Sorted Lists — Hard
• Binary Tree Level Order Traversal — Medium
• Insert Interval — Medium
• Product of Array Except Self — Medium
• House Robber — Medium
• Palindromic Substrings — Medium
• Graph Valid Tree — Medium
• Number of Connected Components in an Undirected Graph — Medium
• Longest Substring Without Repeating Characters — Medium
• Same Tree — Easy
• Reorder List — Medium
• Invert Binary Tree — Easy
• Combination Sum — Medium
• Course Schedule — Medium
• House Robber II — Medium
• Word Break — Medium
• Unique Paths — Medium
• Best Time to Buy and Sell Stock — Easy
• Longest Consecutive Sequence — Medium
• Find Minimum in Rotated Sorted Array — Medium
• Reverse Linked List — Easy
• Linked List Cycle — Easy
• Validate Binary Search Tree — Medium
• Kth Smallest Element in a BST — Medium
• Longest Palindromic Substring — Medium

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