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Python Software Engineer (m/f/d)
Contract
Luxembourg, Luxembourg
16.12.2025
We are looking for a senior Python Software Engineer to join our client, an EU Institution based in Luxembourg. This role is remote from any country within Europe.
Responsibilities
• Analysis and design: Work with the client’s subject matter experts to gather technical, business, and security requirements and any other relevant input. Perform analysis of existing processes and
applications, and additional/new requirements. Design applications addressing these requirements.
• Code Review and Refactoring: Analyse the existing code, understand its business logic and objectives, and support the users to refactor it with professional knowledge to improve maintainability, performance, readability, and adherence to best practices as implemented by the client code quality gate. Ensure that developed code is aligned with financial industry standards and best practices.
• New Developments: Develop new code and templates for additional topics and integrate it seamlessly with existing developments and systems to maintain consistency and to facilitate future expansions.
• Database Development and Integration: Develop and support new database schemas in Microsoft SQL Server and associated data loading scripts, integrating the database with the client’s IT infrastructure to streamline data storage and management.
• Test: Write unit tests to fulfil the required code coverage quality gates, prepare and participate in
system/integration tests and user acceptance tests.
• Documentation: Create comprehensive, user-friendly documentation for all developments to ensure that team members can understand and maintain the code effectively.
• Training and Support: Provide training and support to users in the areas of coding, database
development and integration, and IT infrastructure management, empowering them to grow their skill set and contribute more effectively to future projects.
Requirements
Technical skills
• Bachelor's degree in information technology, Mathematics, Physics, or similar field (mandatory).
• Minimum 7 years of experience in software engineering with Python and SQL.
• Proficient in object-oriented programming (OOP), enabling the adequate application of software design patterns and the creation of modular, reusable, and maintainable code that adheres to modern programming paradigms (mandatory).
• Proficient in automated testing of Python code, e.g., unit-test, pytest, behave (mandatory).
• Proficient in usage of the following Python libraries: Flask, NumPy, Pandas (mandatory).
• Proficient with: XML, JSON, YAML (mandatory).
• Proficient in the use of the Git version control systems (mandatory)
• Experience with the Windows and Unix/Linux operating systems (mandatory).
• Practical experience with software development processes such as Waterfall, Agile Scrum, and/or DevOps (mandatory).
• Experience in the Financial Industry, specifically, familiarity with Capital Markets products and
processes (desired).
• Experience with continuous integration and continues delivery pipelines, e.g., Azure Pipelines (desired).
• Experience with scripting, e.g., shell scripts, PowerShell, batch scripts (desired).
• Experience in software engineering with Java, R, MATLAB, and/or Julia (desired).
• Proficient knowledge of and experience with the following Python libraries: Pytorch, Plotly, Dash
(desired).
• Experience with specialized reporting solutions such as, e.g., PowerBI (desired).
• Experience with Big Data technologies like Spark, Azure CosmosDB etc. (desired).
• Good understanding of a cloud-based microservice architecture, e.g. with Azure (desired).
• Experience with documentation of business requirements and with technical writing (desired).
• Experience with MS Excel (desired).
Soft skills
• Excellent English communication and presentation skills, ensuring clear and concise communication with IT and business and fostering a smooth and effective collaboration process.
• Proven customer-oriented change management and communication skills
Responsibilities
• Analysis and design: Work with the client’s subject matter experts to gather technical, business, and security requirements and any other relevant input. Perform analysis of existing processes and
applications, and additional/new requirements. Design applications addressing these requirements.
• Code Review and Refactoring: Analyse the existing code, understand its business logic and objectives, and support the users to refactor it with professional knowledge to improve maintainability, performance, readability, and adherence to best practices as implemented by the client code quality gate. Ensure that developed code is aligned with financial industry standards and best practices.
• New Developments: Develop new code and templates for additional topics and integrate it seamlessly with existing developments and systems to maintain consistency and to facilitate future expansions.
• Database Development and Integration: Develop and support new database schemas in Microsoft SQL Server and associated data loading scripts, integrating the database with the client’s IT infrastructure to streamline data storage and management.
• Test: Write unit tests to fulfil the required code coverage quality gates, prepare and participate in
system/integration tests and user acceptance tests.
• Documentation: Create comprehensive, user-friendly documentation for all developments to ensure that team members can understand and maintain the code effectively.
• Training and Support: Provide training and support to users in the areas of coding, database
development and integration, and IT infrastructure management, empowering them to grow their skill set and contribute more effectively to future projects.
Requirements
Technical skills
• Bachelor's degree in information technology, Mathematics, Physics, or similar field (mandatory).
• Minimum 7 years of experience in software engineering with Python and SQL.
• Proficient in object-oriented programming (OOP), enabling the adequate application of software design patterns and the creation of modular, reusable, and maintainable code that adheres to modern programming paradigms (mandatory).
• Proficient in automated testing of Python code, e.g., unit-test, pytest, behave (mandatory).
• Proficient in usage of the following Python libraries: Flask, NumPy, Pandas (mandatory).
• Proficient with: XML, JSON, YAML (mandatory).
• Proficient in the use of the Git version control systems (mandatory)
• Experience with the Windows and Unix/Linux operating systems (mandatory).
• Practical experience with software development processes such as Waterfall, Agile Scrum, and/or DevOps (mandatory).
• Experience in the Financial Industry, specifically, familiarity with Capital Markets products and
processes (desired).
• Experience with continuous integration and continues delivery pipelines, e.g., Azure Pipelines (desired).
• Experience with scripting, e.g., shell scripts, PowerShell, batch scripts (desired).
• Experience in software engineering with Java, R, MATLAB, and/or Julia (desired).
• Proficient knowledge of and experience with the following Python libraries: Pytorch, Plotly, Dash
(desired).
• Experience with specialized reporting solutions such as, e.g., PowerBI (desired).
• Experience with Big Data technologies like Spark, Azure CosmosDB etc. (desired).
• Good understanding of a cloud-based microservice architecture, e.g. with Azure (desired).
• Experience with documentation of business requirements and with technical writing (desired).
• Experience with MS Excel (desired).
Soft skills
• Excellent English communication and presentation skills, ensuring clear and concise communication with IT and business and fostering a smooth and effective collaboration process.
• Proven customer-oriented change management and communication skills