Data Engineer, Alternative Data | Delta One Trading | Experienced Hire
About The Position
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.
Requirements
- 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
Nice To Haves
- 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
Responsibilities
- 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
Benefits
- 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.
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What This Job Offers
Job Type
Full-time
Career Level
Entry Level
Education Level
No Education Listed
