Data Engineer, Alternative Data for Quant Trading

Susquehanna International Group, LLP; Bala Cynwyd (PA); On-site; USD 110,000 - 150,000; Full time

Job summary

Susquehanna International Group in Bala Cynwyd, PA seeks a Data Engineer for the Systematic Delta One desk to transform raw vendor datasets into research-ready data powering alpha research and signal development. You will own onboarding, build time-preserving datasets, map entities, and extend the platform with LLM-assisted data workflows, while collaborating with researchers, engineers, and traders.

Candidates should bring 5+ years of Python data experience, SQL, cloud data delivery, and a

Qualifications

• 5+ years building Python data applications over large historical datasets.
• Experience ingesting and normalizing third-party/vendor data at scale (S3/SFTP, Snowflake, APIs).
• Strong SQL and familiarity with columnar tools (Parquet/Arrow); NumPy/Pandas/Polars preferred.
• Experience with temporal/versioned data (point-in-time, bitemporal modeling) is a plus.
• Production data pipelines: monitoring, backfills, restatements; collaboration with researchers.
• Experience applying LLMs to data problems or agentic tooling is a plus.
• Cloud data delivery experience (AWS S3/Snowflake); C++ experience a plus.
• Quant finance or electronic trading exposure is a plus; advanced degree a bonus.

Responsibilities

• Own the end-to-end onboarding of new vendor and alternative datasets, from evaluation to ingestion pipelines and production monitoring.
• Build point-in-time-correct datasets preserving as-delivered history for accurate backtesting.
• Design entity-mapping and reference datasets linking vendor identifiers to tradable instruments.
• Extend the platform beyond tabular feeds with LLM-assisted data extraction and tooling.
• Run data-quality and vendor-evaluation studies guiding trials and licensing decisions.
• Create research-ready datasets optimized for large-scale historical analysis and backtesting workflows.
• Improve the ingestion platform to onboard new datasets faster over time.

Skills

Python data pipelines

SQL & data modeling

Cloud data delivery

Pandas/Polars

Temporal data concepts

Education

Advanced degree in CS/Math/Physics/Engineering

Tools

Snowflake

Parquet/Arrow

DuckDB

Job description

Susquehanna International Group in Bala Cynwyd, PA seeks a Data Engineer for the Systematic Delta One desk to transform raw vendor datasets into research-ready data powering alpha research and signal development. You will own onboarding, build time-preserving datasets, map entities, and extend the platform with LLM-assisted data workflows, while collaborating with researchers, engineers, and traders.

Candidates should bring 5+ years of Python data experience, SQL, cloud data delivery, and a