Senior MongoDB Database Administrator - 85140

Position Title: MongoDB Engineering Standards Specialist

Duration: Contract until Oct 31, 2026 (possible extension)

Location: Downtown Toronto or Scarborough (2-3 days onsite)

Responsibilities:

MongoDB Engineering Standards

• Design replica set and sharded cluster topologies tailored to workload (R/W patterns, data growth, latency, multi-AZ/region).
• Schema and index design aligned with document modeling patterns (subdocuments, bucketization, extended reference, outlier pattern).
• Capacity planning (IOPS/CPU/RAM/Storage), performance tuning (indexes, query plans, connection pools, WT cache).
• Backup/restore strategy design
• Security hardening: RBAC, client certs/TLS, encryption-at-rest (KMIP/KMS), auditing, least-privilege, IP allowlists/NSGs, CIS benchmarks.
• Observability: metrics, logs, and tracing integrations (MongoDB exporters/agents).
• Release management & lifecycle: rolling upgrades, feature compatibility versions (FCV), patching cadence, maintenance windows.

Ansible Automation (IaC for Databases)

• Build idempotent Ansible roles and collections-based playbooks for provisioning:

• OS hardening, users, packages, ulimits, sysctl
• MongoDB install, config (mongod.conf), TLS, replica sets, config servers, mongos, sharding
• User creation (app/admin), roles, indexes, parameters
• Rolling upgrades and patching

• Drift detection & remediation, config guardrails, and change safety (serial/rolling strategies, pre-checks, post-verify).

Collaboration & Governance

• Partner with App teams for data modeling reviews and performance tuning.
• Define standards, runbooks, and design docs; conduct readiness and DR tests.
• Ensure compliance with security frameworks (SOC2/ISO27001/PCI/HIPAA as applicable).

Must Have Requirements:

• 5+ years administering MongoDB in production at scale (replica sets and sharded clusters).
• 3+ years with Ansible (roles, collections, Molecule tests, CI/CD).
• Strong Linux (RHEL/Ubuntu), networking, storage, and TLS/PKI fundamentals.
• Scripting: Bash and/or Python for glue/ops tooling.

Nice To Haves:

• MongoDB Certified DBA/Developer; Red Hat Ansible or equivalent.
• Ops Manager, MongoDB Atlas administration at scale.
• Compliance-driven environments; performance engineering experience.

Education:

• Post Secondary

Interviews:

• 1 round - with HM via MS Team 30 minutes