Tata Consultancy Services · 2 hours ago
Lead Data Architect (Google spanner)
San Jose, CA
Contract
Onsite
Senior Level, Lead/Staff
$120K/yr - $130K/yr
10+ years expTata Consultancy Services is seeking a Lead Data Architect to own the target-state data architecture on Google Spanner. The role involves defining the logical canonical data model and designing Spanner-native physical schemas while ensuring performance and transactional semantics for over 1000 applications.
Business Information SystemsConsultingInformation TechnologyIT Management
Responsibilities
Own the target-state data architecture on Google Spanner, ensuring the new data model satisfies functional correctness, performance SLOs, and transactional semantics required by 1000+ applications—before large-scale app rewrites occur
Define the Logical Canonical Data Model (LCDM) independent of physical storage
Design Spanner-native physical schemas:
Row key distribution (hotspot avoidance)
Interleaving decisions
Secondary index strategy
Decide where denormalization, projections, or materialized views are required
Define transaction boundaries under Spanner constraints:
Single-partition vs multi-partition transactions
Atomicity and consistency trade-offs
Classify workloads by strong consistency vs bounded staleness tolerance
Define idempotency and retry-safe patterns
Work with QA and platform teams to validate:
CRUD contracts
Query semantics
Transaction invariants
Review and sign off on schema compatibility scorecards
Participate in workload replay analysis
Diagnose and resolve:
Hot key risks
Transaction conflicts
Index amplification
Size Spanner instances and estimate cost envelopes
Qualification
Required
10+ years in large-scale data architecture
Deep expertise in Google Spanner internals
TrueTime
Distributed transactions
Synchronous replication
Experience designing petabyte-scale, multi-region OLTP systems
Distributed consistency models
Failure modes in globally distributed databases
Canonical logical data model
Spanner physical schemas & index strategies
Transaction design guidelines
Performance readiness assessments
Migration readiness sign-off per domain
BACHELOR OF COMPUTER SCIENCE
Preferred
Prior Oracle → distributed DB migration experience strongly preferred
Company
Tata Consultancy Services
Tata Consultancy Services is a business solutions company that specializes on information technology services and consulting.
10001+ employees
H1B Sponsorship
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Funding
Current Stage
Public CompanyTotal Funding
unknown2004-08-25IPO
Leadership Team
K. Krithivasan
Chief Executive Officer & Managing Director
Aarthi Subramanian
President and Chief Operating Officer
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