Python Developer [SQL / Data Processing / Banking]

Project overview

We are looking for an experienced Python Developer for our TITANS freelancers team for a long-term international project for a significant banking group.

• the project focuses on the modernization and further development of data-oriented applications supporting key processes in the area of banking risk management, specifically Risk Weighted Assets (RWA)
• cooperation on the development of high-quality and maintainable software, processing large volumes of data, SQL, and automated testing
• cooperation in an international Agile team and participation in the design, development, optimization, and further development of existing solutions

Responsibilities

Project requirements

• design, development, and maintenance of applications in the Python programming language
• modernization of existing applications supporting banking and risk management processes
• development and optimization of solutions for data processing and transformation
• working with large datasets and data structures
• design of modular, scalable, and maintainable software components
• implementation of data and application business logic
• analysis of requirements in cooperation with business experts and technical colleagues
• working with SQL and relational databases
• development and maintenance of data transformations and pipelines
• optimization of application performance, data processing, and system resource utilization
• design and implementation of unit and integration tests
• ensuring code quality through code review
• adherence to coding standards, linting, and formatting rules
• analysis and resolution of technical problems
• refactoring and improvement of existing solutions
• working with Git and source code versioning
• cooperation on automating development and deployment processes
• utilization of AI-assisted development tools, e.g., Microsoft Copilot or Claude
• checking, validating, and modifying AI-generated code
• cooperation in an Agile team and participation in stand-ups, sprint planning, reviews, and retrospectives
• sharing technical knowledge and supporting continuous improvement
• cooperation possible in a hybrid REMOTE + ON-SITE mode [3 days per week, Vienna]
• final remuneration depends on the candidate's experience and the selection process progress
• minimum 2–3 years of professional experience with Python development
• very good practical knowledge of Python
• experience with:
• development of production applications and software components
• design and implementation of data logic
• ability to write clean, modular, testable, and maintainable code
• good understanding of Object-Oriented Programming (OOP) principles
• practical experience with data processing and transformation
• SQL and experience with relational databases
• Git / Version Control
• automated testing
• debugging and troubleshooting
• code review and adherence to coding standards
• working in an Agile / Scrum team
• using AI-assisted development tools and the ability to critically verify their outputs
• practical knowledge of the Linux environment
• ability to create and maintain unit and integration tests
• knowledge of software engineering best practices
• ability to analyze and optimize existing code
• active knowledge of English at a communicative level (min. B2-C1)
• a big advantage:
• practical experience with Pandas, NumPy, or Polars
• Apache Airflow
• design or maintenance of data pipelines
• Docker
• CI/CD pipelines
• performance profiling of Python applications
• automation of development processes
• MCP services / integrations
• cloud-native applications
• broader experience in Data Engineering
• knowledge of:
• Kubernetes
• Jenkins
• other programming languages
• advanced knowledge of Python testing frameworks
• experience in banking or financial services
• knowledge of Risk Weighted Assets (RWA)
• experience with Credit Risk
• knowledge of banking regulatory reporting
• German language
• strong analytical and organizational skills
• ability to effectively solve problems
• independence and willingness to learn
• strong interpersonal and communication skills (written and verbal)
• team player

Project details

• Start: 02.11.2026 ASAP or by agreement
• Duration: 13 months with the possibility of extension
• Remote: hybrid
• Location: Vienna, AT, AT
• Languages: English, Slovak, Czech