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Yves KlemYK

Yves Klem

Software Developer with Expertise in Energy Trading

€640/day
Wuppertal, DE
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Yves

Software developer (focus C#/.Net) and Solution Architect with many years of experience, 17 of which in energy trading with a focus on Commercial Asset Optimization (CAO). In addition, many years of software development experience in various industries with the ability to successfully transfer processes and best practices to new areas (Cross-Industry Expertise).
Expertise in the architecture and development of automated trading systems for intraday electricity trading on European trading venues, particularly EPEX Spot and NordPool Spot.
In-depth domain expertise in Commercial Asset Optimization (CAO), such as intraday trading, position management, schedule management, time series, deal management, hedging, market making for internal markets, and commercial optimization of conventional generation plants.
Experience in cloud-native architectures (AWS), containerization, microservice and API development, monitoring.
  • German

    Native or bilingual

  • English

    Conversational

Remote only
Primarily works remotely

Experience

  • kmh
    Self-Employed Software Developer and IT Consultant
    February 2024 - Today (2 years and 4 months)
    Wuppertal, Germany
    Client: Advertising Agency
    Development and maintenance of billing software for recording employee times and material consumption per job. Creation of single and collective invoices.
    Browser-based application (ASP.Net with MS SQL Server database) for device-independent use under Windows and macOS, also usable in home office.

    Client: Chemical Company (Automotive Coatings Division)
    Further development of a warehouse program for raw materials, laboratory chemicals, samples, and auxiliary or operating materials in the R&D sector.
    Migration from Microsoft SQL Server to Azure SQL with targeted performance optimization.
    Integration with Microsoft Office 365 in mixed 32-bit and 64-bit environments.

    Client: Medium-sized corporate group consisting of four companies in the tank protection service sector
    Further development of a purchasing program connected to standard software for waste management.
    MS Office integration and MS SQL Server database.
    .NET database-management ASP.NET SQL Server Microsoft Office
  • RWE Supply & Trading GmbH (RWEST), Bereich Commercial Asset Optimization (CAO IT)
    Senior Software Developer and Solution Architect
    ENERGY AND UTILITIES
    March 2007 - January 2024 (16 years and 11 months)
    Essen, Germany
    Projects (selection):

    Development of an automated trading system for the intraday electricity market with a focus on algo trading, market making, connection to external and internal trading platforms, technical implementation of risk checks according to regulatory requirements, position management, deal capturing, and automated deal upload to the ETRM system.
    The platform was modernized and technically reconfigured – with a focus on performance, scalability, and monitoring.

    Architecture and development of an application for marketing flexibilities in the power plant portfolio in intraday electricity trading. The goal was the automated evaluation of optimized operating data and the connection to an internal intraday marketplace for efficient placement of buy and sell orders.
    Successes: Economically optimized use of available power plant flexibilities, accelerated decision-making processes, error avoidance, better utilization of economic potential.

    Participation in the technical integration and automation of cross-border auction processes in the European electricity market. The focus was on connecting to platforms for day-ahead capacity auctions and electricity auctions, integration into internal systems, and the implementation of the underlying business processes using a workflow engine, including task control, monitoring, and error handling.

    Architecture of an IT system for connecting customer technical units to a cloud-based virtual power plant (VPP). Integration of the VPP into internal CAO processes and systems (e.g., for intraday trading, reserve markets, and billing). The goal was the automated control and marketing of flexibilities such as battery storage, CHP plants, and controllable customer loads.
    software-architecture C# .NET Amazon Web Services (AWS) external-api-integration

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Education

  • Studies in Mathematics with a minor in Economics
    University of Wuppertal
    Studium der Mathematik mit Nebenfach Wirtschaftswissenschaften

Skill set

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