// skills.json — the stack I actually work in, not the one I have heard of
Skills
{ "source": "CV, verbatim", "invented_percentages": 0 }
SQL & MODELLING
14Advanced SQLWindow functionsCTEsAnalytical queriesPL/pgSQLPostgreSQLDimensional modelling3NFStar schemaSnowflake schemaODS / staging / mart layeringIncremental loadsDeduplicationHistorical data handling
DATA WAREHOUSING
07Google BigQueryPartitioningClusteringCost-aware queryingDataformAmazon RedshiftAmazon RDS
ORCHESTRATION & ETL
06Apache AirflowDAG authoringSchedulingDependenciesETL / ELT pipeline designSource-to-target mapping
PROGRAMMING
06PythonpandasData processingETL scriptingJavaC++
CLOUD
12GCPBigQueryDataformCloud StorageAWSS3RedshiftRDSEC2IAMAthenaGlue Crawler
DATA QUALITY
08Completeness validationTransformation validationReferential integrityData profilingReconciliationPyTest test suitesData governanceAudit documentation
BI & REPORTING
04Power BIDAXPower QuerySemantic modelling
TOOLS & PRACTICE
09GitJiraDockerDBeaverJenkins CILinux CLIAgile / SDLCGitHub CopilotClaude
No proficiency bars here, on purpose. A portfolio whose flagship project is an argument for verifiable claims should not open with a number nobody can check. “Python 92%” is measured against nothing. Grouping and ordering carry the same signal without the fiction — and everything above is what I have shipped work with.
Languages
Uzbek NativeEnglish C2Russian B2