End-to-end ETL pipeline validation and BI Report QA — source-to-target reconciliation, transformation logic, regression suites, and data-quality gates. We close engagements with 95%+ test coverage against documented acceptance criteria.
ETL testing is the validation that data moves correctly from source systems to its target — confirming completeness, transformation logic, referential integrity, and quality before anyone trusts a report. Thinklens delivers offshore ETL testing and BI report QA in four layers: source-to-target reconciliation (row counts, aggregates, and field-level samples across SAP, Workday, files, and APIs); transformation-logic unit tests with versioned expected/actual fixtures; referential-integrity and regression suites run on every release; and data-quality gates that reject bad data at ingest. For the BI layer, the team validates DAX measures, row-level security, calculated fields, drill-through paths, and visual accuracy across Power BI, Tableau, and TIBCO Spotfire. Engagements close at 95%+ test coverage against documented acceptance criteria, with a test-evidence trail your end client's auditors can follow. Delivered under your MSA on Time & Materials or Fixed-Scope terms.
Every engagement runs through a documented test plan covering data, logic, integrity, and quality — built against the end client's acceptance criteria before code lands.
Row counts, aggregate totals, and field-level sample comparisons between source systems (SAP, Workday, flat files, APIs) and the loaded target — automated where possible, sampled for audit.
Unit tests for every transformation rule — joins, lookups, derivations, business rules — with expected/actual fixtures versioned alongside the pipeline code so regressions are caught at PR review, not in production.
Foreign-key coverage, orphan-record detection, and a regression suite that runs against every release. Critical paths re-run on a schedule against production data with masked PII.
Null thresholds, value-domain checks, freshness SLAs, and anomaly detection wired as gates in the pipeline — bad data is rejected at ingest, not surfaced six weeks later in a board report.
When the ETL is clean, the BI layer still needs its own QA. We validate calculations, security models, drill-through paths, and visual accuracy across the three platforms most enterprise clients run.
DAX measure validation against known totals, row-level-security testing across personas, and visual-accuracy checks (axes, drill-through, cross-filter behavior) for every published report.
Calculated-field expression review, dashboard performance profiling (Tableau Performance Recorder), permissions matrix testing, and extract-refresh validation.
Information-link parameterization tests, IronPython script review, marking-and-filtering propagation, and Spotfire Library deployment validation.
We sign off when the test matrix is green, not when the calendar says so. If the data tells us a release isn't ready, we say so — that's the value of using a partner whose name isn't on the SOW.
End-to-end pipeline validation — source-to-target reconciliation, transformation-logic unit tests, referential-integrity and regression suites, and data-quality gates — typically reaching 95%+ test coverage against documented acceptance criteria before sign-off.
Power BI, Tableau, and TIBCO Spotfire. We validate DAX and calculated-field measures, row-level security, drill-through paths, and visual accuracy against known totals.
As a silent sub-contractor under your MSA, on Time & Materials or Fixed-Scope terms. Pre-vetted testers can typically start within 1–2 weeks of a signed SOW.
Fully registered in India (GST, PAN, IEC). Transparent contracts and audit-ready processes. A reliable offshore team with proven delivery — the three things every overseas partner wants on day one.
Request our compliance packAn unfilled seat isn't neutral — every week it stays empty is a slipped deadline or a client conversation you'd rather not have. Tell us the gap before it costs you one, and we'll line up the right senior consultant, remotely, with fast ramp-up.
An overflow crunch, a long-term mandate, ongoing support, or training — tell us what you need and we'll move fast.
Take these with you — free, no email wall, no strings:
01 ETL Testing Tools Checklist 02 Power BI vs Tableau vs Spotfire 03 What is ETL Testing? A plain-English guide