Antonio S.

Senior Data Engineer

Antonio is an experienced Senior Data Engineer with over 11 years of expertise in designing and delivering scalable, high-performance data solutions.

Proficient in Snowflake, SQL, Python, Postgres, dbt, and AWS (S3, Glue, Lambda), he has built multi-terabyte ingestion pipelines, developed Change Data Capture (CDC) frameworks using Streams and Tasks, and optimized data architectures to empower analytics teams.

His experience spans data modeling, real-time data ingestion, and query optimization through clustering and partitioning techniques. Known for combining hands-on pipeline development with strategic platform optimization, Antonio helps organizations achieve reliable, efficient, and cost-effective data operations.

Clients value his technical depth, attention to performance, and ability to translate complex data challenges into sustainable, business-driven solutions.

Main expertise

  • Python
    Python 6 years
  • ELT 6 years
  • Google Cloud
    Google Cloud 6 years

Other skills

  • ElasticSearch
    ElasticSearch 3 years
  • AWS Glue
    AWS Glue 3 years
  • AWS SQS
    AWS SQS 3 years
Antonio

Antonio S.

Croatia

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Selected experience

Employment

  • Data Engineer

    CODECRYPT d.o.o. - 4 years 2 months

    • Dockerized and modernized development environments, reducing setup time from hours to minutes.
    • Designed and implemented reproducible ETL pipelines to seamlessly transfer data between staging and production-like environments.
    • Automated data ingestion and transformation workflows, eliminating reliance on manual and error-prone test files.
    • Improved system maintainability and reliability by introducing containerized services.
    • Collaborated with cross-functional teams to establish best practices in data handling and pipeline management.
    • Contributed to the leading digital care management platform used across the UK health and social care sector.

    Technologies:

    • Technologies:
    • Docker Docker
    • PostgreSQL PostgreSQL
    • Ruby Ruby
    • AWS AWS
    • ElasticSearch ElasticSearch
    • Redis Redis
    • Python Python
    • Azure Azure
    • Google Cloud Google Cloud
    • Data Engineering
    • Git Git
    • ELT
    • Snowflake Snowflake
    • ETL ETL
    • PySpark PySpark

  • Software Engineer

    FOREO Adria d.o.o. - 3 years 11 months

    • Re-engineered a legacy ERP system using FastAPI, improving scalability and reducing response times.
    • Implemented Elasticsearch for advanced full-text search across millions of records, enhancing data retrieval efficiency.
    • Developed asynchronous data pipelines with RabbitMQ, increasing throughput and enabling resilient, decoupled services.
    • Designed and maintained REST APIs for external partners and B2B integrations.
    • Optimized PostgreSQL database schemas and queries, reducing latency and improving overall system performance.

    Technologies:

    • Technologies:
    • MySQL MySQL
    • Docker Docker
    • PostgreSQL PostgreSQL
    • AWS AWS
    • ElasticSearch ElasticSearch
    • Redis Redis
    • Python Python
    • AWS SQS AWS SQS
    • SQL SQL
    • AWS S3 AWS S3
    • Azure Azure
    • Google Cloud Google Cloud
    • Data Engineering
    • Git Git
    • ELT
    • ETL ETL
    • FastAPI FastAPI
    • AWS Glue AWS Glue
    • AWS RDS AWS RDS

  • Software \ Data Engineer

    STINA Technologies d.o.o. - 3 years 2 months

    • Designed and implemented ETL pipelines for the Austrian Institute of Economy’s national data warehouse.
    • Built ERP and CRM systems with a focus on clean, modular data architecture and maintainability.
    • Developed tools for financial and tax return calculations across large, cross-border datasets.
    • Delivered data-driven solutions for banking and e-commerce clients, including dashboards and analytics tools.
    • Ensured data quality, integrity, and compliance across multiple industry domains.

    Technologies:

    • Technologies:
    • PHP PHP
    • MySQL MySQL
    • Docker Docker
    • PostgreSQL PostgreSQL
    • Ruby Ruby
    • AWS AWS
    • ElasticSearch ElasticSearch
    • Redis Redis
    • Java Java
    • MSSQL MSSQL
    • T-SQL T-SQL
    • Python Python
    • SQL SQL
    • .NET .NET
    • Data Engineering
    • Git Git
    • ELT
    • Snowflake Snowflake
    • ETL ETL

Education

  • BSc.Computer Science

    Veleučilište Velika Gorica · 2011 - 2014

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