{"id":1602849,"url":"https://alion.io/job/susquehanna-international-group-software-engineer-tactical-python-developer-experienced-hire","title":"Software Engineer| Tactical Python Developer | Experienced Hire","company":{"id":4917,"name":"Susquehanna International Group","domain":"sig.com","url":"https://alion.io/company/sig","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"iCIMS","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"middle","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Philadelphia, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":126000,"max_usd":249000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":1246},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"FastAPI","optional":false},{"name":"Flask","optional":false},{"name":"Machine Learning","optional":false},{"name":"NumPy","optional":false},{"name":"Pandas","optional":false},{"name":"Python","optional":false},{"name":"SQL","optional":false}],"status":"live","first_seen_at":"2026-10-01T19:35:46Z","employer_posted_date":"2026-10-01","last_verified_at":"2026-10-12T11:06:08Z","board_verified":true,"closed_at":null,"days_open":10,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":10},"description":"Overview\nFront Office Python Engineer - Trading Applications\nWe are hiring Python Engineers to build and evolve trader-facing applications that power data analysis, visualization, and decision-making across trading and development desks.\nThis 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.\nWhat you’ll work on:\nResearch, design, and develop systems used in backtesting and data analysis \nBuild Python-based applications and tools that deliver tactical analytics for trading decisions\nStrategy monitoring and diagnostics \nDevelop both ad-hoc tools and systematic data solutions \nImprove trading workflows and optimize performance \nDesign and maintain data pipelines and datasets supporting research and trading \nContinuously refine systems based on desk feedback and evolving trading strategies\nWhat we’re looking for\n3+ years of professional experience building Python applications or data systems \nStrong Python skills, including experience with: \nPandas, NumPy, and data processing libraries \nBackend frameworks (Flask, FastAPI, or similar) \nExperience working with: \nData pipelines and structured/unstructured datasets \nAPIs and real-time data feeds \nSQL and database systems \nAI tools to improve code quality, performance, and developer productivity\nFamiliarity with: \nData visualization tools \nExposure to real-time systems or event-driven architecture\nAbout Susquehanna\nSusquehanna is a global quantitative trading firm powered by scientific rigor, curiosity, and innovation. Our culture is intellectually driven and highly collaborative, bringing together researchers, engineers, and traders to design and deploy impactful strategies in our systematic trading environment. To meet the unique challenges of global markets, Susquehanna applies machine learning and advanced quantitative research to vast datasets in order to uncover actionable insights and build effective strategies. 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