Cohesity

Staff Software Engineer — Active Directory Internals & Directory Services

Cohesity
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17 hours ago
Bengaluru, IndiaStaff+

Responsibilities

  • Design and implement the directory engine that discovers, tracks, and safely applies changes to Active Directory objects.
  • Build robust change-tracking pipelines using DirSync, USN cookies, and change notification, including cursor persistence, catch-up, and resynchronization.
  • Implement tombstone, deleted-object lifetime, and Recycle Bin handling for accurate backup and recovery.
  • Preserve and validate SID, SID history, and GUID identity continuity across operations and restores.
  • Implement safe modify, ModifyDN, and object-creation paths with idempotency, conflict handling, and integrity guarantees.
  • Work with AD-integrated DNS and Group Policy internals to ensure complete and consistent capture and restore.
  • Diagnose and resolve complex replication, consistency, and LDAP edge cases in production environments.

Requirements

  • Hands-on, internals-level expertise with Active Directory schema, object classes, linked-value replication, replication metadata, USN semantics, and consistency reasoning.
  • Experience with LDAP search and controls, including paged and persistent search.
  • Experience with DirSync, USN cookies, and change notification for change tracking.
  • Knowledge of tombstones, deleted-object lifetime, and AD Recycle Bin behavior.
  • Understanding of SID, SID history, and GUID continuity semantics across domains and restores.
  • Knowledge of Group Policy internals, including GPC, GPT, and SYSVOL, plus AD-integrated DNS zones and records.
  • Experience implementing correct and safe modify, ModifyDN, and object-create operations.
  • Preferred experience building Active Directory backup, replication, disaster-recovery, or migration tooling.
  • Familiarity with Entra ID or Azure AD hybrid environments, C/C++, C#, or Go, systems-level performance work, and large multi-domain or multi-forest deployments.

Benefits

  • Employees within a reasonable commute of a core office generally work in-office two to three days per week of their choosing.
  • Candidates outside the designated area should be committed to relocating before their start date and must have legal work authorization in the job location.
  • Cohesity is an Equal Employment Opportunity Employer and provides reasonable accommodation support for applicants with disabilities.

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Cohesity

About Cohesity

5,001-10,000 employees

Cohesity builds enterprise data security and management software that provides backup, disaster recovery, ransomware recovery, and data governance across data centers and public clouds. Its Cohesity Data Cloud is sold as subscription software, on integrated appliances, and as cloud services to large enterprises and public-sector customers. Privately held and headquartered in Santa Clara, California, Cohesity was founded in 2013 and focuses on cyber recovery and securing data at scale.

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