Data Engineer (ETL Migration) at Top Selection · Web3Vacancy
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Data Engineer (ETL Migration)

Remote
◆ 8/10 techData Engineerremote
About this role

Top Selection is looking for a Senior Data Engineer for ETL migration projects. Remote work with a salary range of 270,000 to 285,000 ₽ per month.

Description

Top Selection is looking for a Senior Data Engineer for ETL migration projects. Remote work with a salary range of 270,000 to 285,000 ₽ per month.

Responsibilities

Responsibilities

  • Migration of ETL systems from Oracle/Informatica to Apache stack (S3, Airflow, NiFi, Kafka, Greenplum)
  • Transfer business logic from Informatica to high-performance SQL code
  • Write and optimize SQL for data marts and ETL processes
  • Develop DAGs in Airflow
  • Configure pipelines in NiFi (sources: Oracle, PostgreSQL; receivers: S3, file archives)
  • Develop Spark jobs (PySpark) for large volumes
  • Integrate with Kafka for streaming
  • Set up monitoring (Grafana/Prometheus) and track metrics
  • Analyze incidents related to data quality and loading errors
  • Conduct code reviews
Requirements

Requirements

  • Experience in migrating ETL systems (preferably from Oracle/Informatica to Apache stack)
  • Deep SQL knowledge: window functions, complex joins, hierarchical queries
  • SQL optimization for high load (partitioning, indexes, explain plans)
  • Experience with Oracle (PL/SQL) and PostgreSQL
  • Knowledge of Greenplum and/or Clickhouse
  • Designing architectures on Apache Spark (PySpark), NiFi, Airflow
  • Familiarity with Hadoop (HDFS) and Hive
  • ETL monitoring: Grafana/Prometheus or Victoria Metrics
  • Experience with billing systems (preferably in telecom domain)
  • Will be a plus:
- Stream processing: Kafka Streams / Spark Streaming - Understanding of Informatica PowerCenter - Binary storage formats in Hadoop - Differences: Hive vs Impala, Greenplum vs PostgreSQL, Clickhouse vs PostgreSQL - Patroni for clustering PostgreSQL/Greenplum - S3 storage - CryptoPro or secure data transmission channels
Job Details
LocationRemote
AI Score★★★★★★★★☆☆ 8/10
PostedSep 27, 2026 (15d ago)
Tags & Skills
techData Engineerremote
Tech Stack
ETLApacheS3AirflowNiFiKafkaGreenplumSQLPySparkGrafanaPrometheusHadoopHivePostgreSQLOraclePL/SQL

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