FINANCE • 8 weeks
Bank Reconciliation Automation System
Replaced manual reconciliation with auditable, governed automation at scale.
HIGHLIGHT
2 days → 15 min
Reconciliation time
Delivery posture
CLIENT SNAPSHOT
CLIENT
Fintech Infrastructure Firm
VOLUME
High transaction throughput
ENGAGEMENT
Audit → Build → Hardening
PRIMARY GOAL
Compliance + speed + traceability
Problem landscape
- Manual Excel-based reconciliation with delays
- Mismatch reporting took 2–3 days; high error rate
- No systematic audit trail for investigation
- Weak access control separation for ops vs finance
Business risk
- Compliance exposure due to missing auditability
- Financial reporting delays
- Fraud detection lag due to late mismatches
- Operational overload from manual review
Architecture & execution approach
Ingestion & Normalization
- Bank API ingestion pipelines (idempotent pulls)
- Normalization engine (canonical transaction model)
- Queue-based processing for throughput and retry safety
Matching & Exceptions
- Matching algorithm with scoring and tolerance rules
- Exception queue + resolution dashboard
- Audit events for all reconciliation decisions
Security & Compliance
- RBAC enforced for dashboards and exports
- Immutable audit log pattern for investigations
- PII-safe storage and controlled access
Milestones (governed delivery)
MILESTONE 1
Process Audit
Outcome: Identified breakpoints and formalized rules for matching.
- Manual workflow mapping
- Mismatch categories
- Data contract definitions
MILESTONE 2
Automation Core
Outcome: Automated matching + exception management with traceability.
- Normalization pipeline
- Matching engine
- Exception dashboard
MILESTONE 3
Hardening & Audit Readiness
Outcome: Audit logs + access control + operational runbooks.
- RBAC and audit log verification
- Performance tuning
- Runbook and incident readiness
Security & governance controls
- RBAC enforced across modules
- Audit log integrity checks
- Production readiness checklist
- Change control for rule adjustments
Results (before vs after)
| Metric | Before | After |
|---|---|---|
| Reconciliation time | 2 days | 15 minutes |
| Error rate | 3–5% | <0.4% |
| Mismatch visibility | Delayed | Near-real-time |
| Audit prep | Manual | Auto-report + logs |
Impact
- Reduced operational risk through traceable automation
- Faster reporting and improved compliance posture
- Better fraud detection timing through quicker mismatch surfacing
Lessons learned
- Auditability is a feature, not paperwork
- Queues + idempotency prevent reconciliation chaos
- Clear data contracts reduce downstream errors dramatically
NEXT STEP
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