Freelance Data Engineer - European Union - Darwin Partners

    Darwin Partners
    Darwin Partners European Union

    1 day ago

    Technology / Internet
    Description

    We are looking for a Data Engineer to join the data platform team of a trading company based in London.

    You will work in the same team as a Lead Data Engineer already in place and focus mainly on enhancements of the data platform.

    The environment is strongly cloud-oriented (AWS), with Python and PySpark at the core of all data pipelines and processing. You will help keep mission-critical trading and risk data reliable, performant, and available to users across the business.

    Key Responsibilities


    • Monitor and operate existing data pipelines and jobs (Python / PySpark / AWS).


    • Perform bug fixes, small evolutions, and refactoring on existing codebases.


    • Work closely with the Lead Data Engineer and business stakeholders to understand issues and prioritize fixes.


    • Maintain documentation for pipelines, workflows, and operational procedures.


    • Contribute to the development of new data ingestion and transformation pipelines in Python / PySpark on AWS.


    • Implement new features and small data products on top of the existing data platform.


    • Participate in code reviews and help improve engineering best practices (testing, CI/CD, observability).

    Required Skills & Experience


    • Several years of experience as a Data Engineer (or similar role).


    • Strong hands-on skills in Python for data processing (ETL/ELT, APIs, automation).


    • Solid experience with PySpark in a production context (batch and/or streaming).


    • Professional experience on AWS (data-oriented services such as S3, Glue, EMR, Lambda, ECS, Redshift, etc.).


    • Good knowledge of SQL and relational databases.


    • Experience operating data pipelines in production: monitoring, alerting, troubleshooting, optimisation.


    • Comfortable working in remote, international teams, communicating in English (written and spoken).

    Nice to Have


    • Experience in trading, financial markets, or commodities environments.


    • Knowledge of data orchestration tools (e.g. Airflow, Step Functions) and CI/CD practices.


    • Familiarity with microservices / APIs (FastAPI or similar) and containerization (Docker).


    • Exposure to data governance, security, and role-based access control in cloud environments.

    Soft Skills


    • Strong sense of ownership and reliability on production systems.


    • Pragmatic and solution-oriented, able to work on both small fixes and incremental improvements.


    • Good communication skills with both technical and non-technical stakeholders.


    • Team player, comfortable pairing with a more senior engineer and following existing architecture and standards.

    Practical Information


    • Location: 100% Remote (European time zones).


    • Environment: Data platform for trading & risk use cases.


    • Start date: ASAP.


    • Contract type: Long-term mission / consulting.


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