Susquehanna International Group

Data Engineer, Alternative Data | Delta One Trading | Experienced Hire

Susquehanna International Group$120K — $145K *
Finance & Insurance
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 5+ years of experience with Python for data applications and pipelines
  • Experience with large-scale ingestion and normalization of third-party data
  • Strong SQL skills alongside experience with analytical tools like Parquet and DuckDB
  • Solid understanding of data modeling and reproducible research workflows
  • Experience operating production data pipelines with monitoring and incident handling
  • Ability to translate ambiguous research ideas into robust datasets
  • Familiarity with LLM applications in data-related problems is a plus
  • Cloud data delivery experience (AWS S3, Snowflake) and C++ knowledge are advantages

Responsibilities

  • Own end-to-end onboarding of new vendor datasets from evaluation to production monitoring
  • Build point-in-time-correct datasets, preserving data integrity during backtests
  • Design entity-mapping datasets that connect identifiers to tradable instruments
  • Extend the platform to extract structure from unstructured data and automate workflows
  • Run data-quality studies to inform vendor licensing decisions
  • Create research-ready datasets for large-scale analysis and backtesting
  • Enhance ingestion platform to improve onboarding speed for new datasets

Benefits

  • Significant impact on decision-making through dataset onboarding
  • Collaborative environment with clear feedback loops between engineering and trading teams
  • Opportunities for continuous innovation and personal growth in the role
Full Job Description
Overview

We are seeking a Data Engineer to join our Systematic Delta One desk, where engineers, researchers, and traders work side-by-side to develop scalable, fully automated trading strategies across liquid global products and venues. Partnering closely with our quantitative researchers, this role owns the path from raw vendor and alternative datasets to the point-in-time-correct, research-ready data that powers alpha research and signal development.

 

The ideal candidate combines strong Python engineering skills with hands-on experience ingesting and normalizing third-party data at scale: batch feeds over S3 and SFTP, cloud data shares, and APIs, and increasingly semi-structured and unstructured sources such as documents, transcripts, and text. You will design pipelines and research tools that process billions of rows of historical data efficiently, reproducibly, and with a high degree of correctness.

 

A core part of the role is translating evolving research ideas into usable datasets and research infrastructure, working with our market-data and compliance teams during vendor trials.  Success in this role requires strong communication skills, intellectual curiosity, and the ability to iterate quickly as hypotheses and data requirements evolve.

 

How You'll Make an Impact:

  • Own the end-to-end onboarding of new vendor and alternative datasets: from evaluating samples and data dictionaries with researchers, through building ingestion pipelines, to production monitoring
  • Build point-in-time-correct datasets: preserving as-delivered history and handling vendor restatements, revisions, and backfills, so backtests see exactly what was knowable at the time
  • Design entity-mapping and reference datasets that connect vendor identifiers (brands, merchants, estimate line items) to tradable instruments
  • Extend the platform beyond tabular feeds: apply LLMs and agentic tooling to extract structure from unstructured vendor material (documents, filings, transcripts, data dictionaries) and to automate onboarding, entity-resolution, and data-quality workflows
  • Run data-quality and vendor-evaluation studies (coverage, revision behavior, panel stability) that directly inform trial and licensing decisions
  • Create research-ready datasets optimized for large-scale historical analysis and backtesting workflows
  • Improve the shared ingestion platform and tooling so that each new dataset onboards faster than the last
What we’re looking for
  • 5+ years of experience building Python data applications and pipelines over large historical datasets, with a performance-aware mindset
  • Experience ingesting and normalizing third-party or vendor data at scale (batch feeds over S3/SFTP, cloud data shares such as Snowflake, or APIs)
  • Strong SQL and familiarity with modern columnar and analytical tooling (Parquet, Arrow, DuckDB or similar), alongside NumPy, Pandas, or Polars
  • Strong understanding of data modeling, data accuracy, and reproducible research workflows; experience with temporal or versioned data (point-in-time, slowly changing dimensions, bitemporal modeling) strongly preferred
  • Demonstrated success operating production data pipelines: monitoring, alerting, backfill and restatement handling, incident forensics
  • Ability to work closely with researchers and scientists, taking ambiguous ideas and evolving them into robust datasets and scalable workflows
  • Experience applying LLMs to data problems (extraction, classification, entity resolution, data-quality checking) or building LLM-assisted and agentic tooling is a plus
  • Experience with cloud data delivery (AWS S3, Snowflake) is a plus; prior experience in C++ is a plus
  • Experience in quantitative finance or electronic trading environments is a plus but not required
  • An advanced degree in Computer Science, Mathematics, Physics, Computer Engineering, or a related field is a plus

What you can expect from us: 

Real Impact: You will onboard the datasets that decide which signals get built, and see your pipelines feed research and production trading directly. Your work makes the whole research organization smarter, faster, and better.

Collaboration: Our data engineers, researchers, and traders work together daily; the feedback loop from a dataset you built to a strategy in production is short and visible.

Growth: We're looking for people who are naturally curious, relentless problem solvers, and have the desire to continuously innovate, learn, and grow; prior proprietary-trading experience is not required.

 

About Susquehanna International Group

Susquehanna International Group is a global quantitative trading firm that was founded in 1987. The company specializes in trading options, futures, equities, and other securities. It has offices in North America, Europe, and Asia and employs over 2,500 people. The company is known for its innovative trading strategies and advanced technology. It is also involved in venture capital and private equity investments.
Learn more about Susquehanna International Group
Size
2,500 employees
Industry
Founded
1987

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