Python Developer- Quant Core Data | Experienced Hire at Susquehanna International Group, LLP
Bala Cynwyd (Philadelphia Area), PA
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Jul 1, 2026
Bala Cynwyd (Philadelphia Area), PA
Jul 21, 2026
What this job asks for AI summary
This role sits within a quantitative trading firm's data team, focused on converting mathematical trading logic into optimized code and building the backtesting and historical data infrastructure that researchers rely on. Day-to-day work involves developing high-performance Python, maintaining simulation systems, and creating tools to process and visualize large datasets. It suits a PhD or postdoc in a quantitative discipline with strong Python engineering skills.
Mid level · Philadelphia-Camden-Wilmington, PA-NJ-DE-MD · Doctorate required · Full-time
“or” means any one of them counts — you don't need all of them.
We read this from the posting text with AI. Skim the description below before ruling yourself out.
How this req sits in the market our data
Roughly 15 people in the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD area plausibly meet what this posting asks for (software developers). range 7–30
Applicant volume Moderate — A normal amount of company. The rare requirements below are what will separate a shortlisted application from the rest.
Rare in this occupation — lead with these, and say what you built with them.
Most people in this occupation already list these. Still required — just not what gets you shortlisted.
What the occupation pays Median $135,966 (middle half $106,205–$168,771).
Estimated from BLS employment for this occupation and area, per-skill prevalence across our listing corpus, and published wage benchmarks — as of Jul 28, 2026. It is a model, not a headcount.
Why we read it this way (5)
The role sits at the intersection of high-performance software development and quantitative research — the primary day-to-day work (translating trading logic into optimized code, building backtesting and data infrastructure) maps most closely to Software Developers (15-1252), with Data Scientists (15-2051) as a credible runner-up given the heavy data analysis and quant research context.
A PhD (or postdoc) graduating by Summer 2026 in a quantitative field is stated as a hard requirement. Because the JD accepts equivalent experience in lieu of a degree only when explicitly stated — and it is not stated here — this is treated as a Doctorate requirement.
No location is explicitly stated in the posting; Susquehanna's headquarters in Bala Cynwyd, PA (Philadelphia metro) is used as the default CBSA.
No compensation figures are provided.
The role targets new/recent PhD graduates or postdocs, which maps to a Mid seniority band despite the doctoral credential — the posting describes no prior industry experience requirement and the scope is team-level contribution rather than org-wide technical authority.
Read the full posting
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