Mid-Level Python Engineer – Trading Systems & Data Pipelines

Empower the future of trading technology — design innovative data pipelines and analytics that revolutionize market microstructure!
Wroclaw-based opportunity with on-site work model.

As a Mid-Level Python Engineer – Trading Systems & Data Pipelines, you will be working for our client, a leading financial technology firm specializing in trading infrastructure. You will help build and enhance systems that analyze trading behavior, optimize execution strategies, and support high-performance live trading environments. This is a chance to directly impact the efficiency and transparency of global markets through cutting-edge engineering.

Your main responsibilities:

• Develop Python libraries, data pipelines, and tooling to process exchange protocols, order flow, and large-scale trading data.
• Design analytical frameworks, metrics, and monitoring tools to evaluate execution quality and system performance.
• Operate close to the trading stack, working with high-resolution datasets for research and production use.
• Collaborate with stakeholders to translate analytical insights into measurable improvements in trading execution.
• Support live trading systems through data validation, pipeline reliability, and real-time monitoring.
• Analyze trading behavior across venues to identify inefficiencies and improve latency and fill performance.
• Work with research and infrastructure teams to support ongoing development of market behavior understanding.

You're ideal for this role if you have:

• 7+ years of professional experience in Python development, building libraries, data platforms, or analytical tooling.
• Strong experience working with large-scale and time series datasets using tools such as NumPy and Pandas.
• Solid SQL knowledge and experience working with analytical databases.
• Excellent problem-solving skills and the ability to investigate complex data and system behaviors.
• Ability to translate analytical or trading-related problems into robust engineering solutions.
• Experience working in Linux environments, following best practices like testing, version control, and CI.
• Strong communication skills for collaborating across technical and non-technical teams.
• Familiarity with financial markets, electronic trading, or execution analysis.

It is a strong plus if you have:

• Exposure to network protocols, packet analysis, or performance optimization techniques.
• Experience with lower-level programming languages such as C, C++, or Rust.

Language Required for the role:

• Fluent English

Eligibility for the role:

• Only candidates with an existing legal right to work in the European Union will be considered for this role.

#MAKEYourCareerBETTER

Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.