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Rares MihalacheRM

Rares Mihalache

Data Engineer | ETL Developer

$198/day
Dubai City, AE
3-7 years

Average response time: 1 hour

About Rares

I’m a Data Engineer with a strong foundation in economics and a deep passion for transforming raw data into valuable insights and efficient systems. With hands-on experience across industries like finance, telecommunications, and research, I specialize in designing, optimizing, and maintaining scalable data workflows — from ETL pipeline migration to real-time analytics dashboards.

I bring technical expertise in Talend (Talend Core Developer certified), SQL (PostgreSQL, MySQL, Oracle), Python, and data visualization tools like Power BI and Apache Superset. I’ve successfully migrated ETL processes from legacy platforms like Informatica to Talend, optimized data workflows in cloud environments, and built dashboards that drive business decisions. My previous roles at btProvider, Afiniti, and Morgan Stanley have honed both my engineering and stakeholder communication skills.

I take pride in crafting robust, well-documented, and business-aligned data systems. Whether it’s building a new data pipeline, improving reporting performance, or enabling self-service analytics — I focus on delivering outcomes that matter.

Outside of work, I’m a published researcher, Kaggle contributor, and lifelong learner with education from Oxford, LSE, and the University of Manchester.

Let’s connect if you’re looking for a freelance or contract-based Data Engineer to bring clarity, performance, and value to your data infrastructure.
  • Romanian

    Native or bilingual

  • English

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • BTProvider
    Data Engineer
    September 2023 - Today (2 years and 9 months)
    • migrate ETL workflows from Informatica to Talend;
    • provide end-user support and training for developed software solutions; Bucharest, Romania
    • prepare comprehensive user documentation for deployed applications;
    • develop and maintain software applications and databases to support data integration and ETL processes;
    • ensure application integrity and compliance with project requirements through rigorous testing and validation;
    • configure, test, and optimize project-related applications using Talend, proposing functional enhancements as needed;
    • schedule and manage application workflows in Talend Cloud to automate processes effectively.
  • Afiniti
    Data Engineer
    November 2022 - September 2023 (10 months)
    Bucharest, Romania
    • ensured that data contains required information for analytics and modeling;
    • solved complex business queries through data;
    • created dashboards for presenting key results using Apache Superset/ PowerBI;
    • built, maintained, and improved data pipelines using Talend Open Studio;
    • developed, refreshed stored procedures using PostgreSQL;
    • debugged data mismatches using MySQL and Python.
  • Morgan Stanley
    Data Analyst
    June 2022 - October 2022 (4 months)
    • informed and provided guidance on the concepts of data governance and data management; remote
    • collected, analyzed, and catalogued data elements and business concepts according to the data policy;
    • utilized PostgreSQL for database query tasks;
    • loaded over 100 Data Elements into the firm database with PuTTY terminal emulator every day;
    • performed data cleaning through Collibra metadata management tool platform.

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Education

  • Certification
    AI for Global Goals | Oxford University
    2023
    Machine Learning
  • Certification
    The London School of Economics and Political Science: Summer School
    2021
    Data Science and Machine Learning

Skill set

Categories