Fredy Rolando Martínez Méndez
Fredy Rolando Martínez Méndez

Data Engineer

Open to offers · Member since 21 Aug 2026
Message
Location
San Salvador, El Salvador
Desired salary
Confidential
Work preference
Remote Only / Full Time
Experience level
Senior

About

Professional summary

I am a Data Engineer with more than four years of experience designing ETL pipelines, optimizing SQL workloads, and managing cloud-based data platforms.

I specialize in Python and SQL, with hands-on experience in PostgreSQL, SQL Server, Azure Data Factory, AWS, Pentaho Spoon, and Git. I also have experience with DAX, MATLAB, and JavaScript.

In my current role, I improve data processing efficiency by optimizing complex queries, restructuring databases, and monitoring warehouse performance, storage usage, and costs.

I build business intelligence solutions through SSRS reports, Power BI dashboards, and Tableau visualizations that support operational and stakeholder decision-making.

I am continuously expanding my data engineering knowledge through training in Azure Synapse, cloud data warehousing, Spark, and data science. I also explore tools such as Snowflake, Airflow, and dbt in personal sandbox environments.

I stay current with industry practices through hands-on learning and research into data modeling, distributed systems, and data governance.

Notice period: 2 weeks

Skills

19 capabilities

Tech stack & tools

Working toolkit

Development

Languages & Frameworks

Experience

Career history

Data Engineer Cikume SA de CV

Optimized complex SQL queries, reducing average runtime by 30% and improving daily data-processing efficiency. Designed and implemented ETL pipelines for data ingestion and transformation, and tuned databases to improve performance and scalability.

Developed SSRS reports and interactive Power BI and Tableau dashboards to support business intelligence and operational decision-making. Monitored data warehouse storage, query efficiency, and costs.

Performed SQL Server and PostgreSQL backup and restore procedures, database health checks, performance tuning, and cost monitoring.

Education

Learning history

Universidad de El Salvador

B.S. in Systems Engineering, Systems Engineering

Completed 100% of the Bachelor of Science program in Systems Engineering.

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