Software Engineer| Tactical Python Developer | Experienced Hire

Susquehanna International Group, LLP•Bala Cynwyd (Philadelphia Area), PA

About The Position

Front Office Python Engineer - Trading Applications We are hiring Python Engineers to build and evolve trader-facing applications that power data analysis, visualization, and decision-making across trading and development desks. This role combines data engineering, application development, and quantitative tooling, with a focus on delivering systems used in backtesting, analytics, and real-time trading workflows. You will work closely with traders, quantitative analysts, and technologists to turn data into actionable insights and scalable tools.

Requirements

3+ years of professional experience building Python applications or data systems
Strong Python skills, including experience with: Pandas, NumPy, and data processing libraries
Strong Python skills, including experience with: Backend frameworks (Flask, FastAPI, or similar)
Experience working with: Data pipelines and structured/unstructured datasets
Experience working with: APIs and real-time data feeds
Experience working with: SQL and database systems
Experience working with: AI tools to improve code quality, performance, and developer productivity

Nice To Haves

Familiarity with: Data visualization tools
Exposure to real-time systems or event-driven architecture

Responsibilities

Research, design, and develop systems used in backtesting and data analysis
Build Python-based applications and tools that deliver tactical analytics for trading decisions
Strategy monitoring and diagnostics
Develop both ad-hoc tools and systematic data solutions
Improve trading workflows and optimize performance
Design and maintain data pipelines and datasets supporting research and trading
Continuously refine systems based on desk feedback and evolving trading strategies

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