Senior Data Engineer
Summary
Senior Data Engineer builds scalable pipelines to process billions of market data records for trading systems using Python, SQL, Spark, and Kafka.
We are looking for a Senior Data Engineer to build and operate a high-performance market data platform supporting quantitative research and production trading systems. You'll design scalable data pipelines, process billions of market data records, and deliver reliable, production-quality datasets for research, analytics and real-time applications.
Key Responsibilities
- Build scalable ETL/ELT pipelines for batch and streaming market data.
- Develop production-grade Python and SQL solutions.
- Ingest, normalise and validate market data, including trades, ticks, Level 1 & 2 quotes, order books, reference data and corporate actions.
- Implement automated data quality, reconciliation and monitoring frameworks.
- Optimise data storage using Parquet, Arrow and modern data lake technologies.
- Partner with quantitative researchers, traders and engineering teams to deliver trusted datasets.
- Strong Python and SQL.
- Expertise with Parquet and modern data storage formats.
- Deep understanding of high-frequency market data, including tick data, order books and market data normalisation.
- Experience handling time-series challenges such as timestamp precision, sequence gaps, duplicate and out-of-order events.
- Experience with distributed processing (Spark, Polars, Dask, Ray or similar).
- Experience with Kafka or similar streaming technologies.
- Familiarity with PostgreSQL, ClickHouse, Snowflake, Databricks, kdb+ or similar.
- Docker, Linux, Git and CI/CD experience.
Highly Desirable
- Familiarity with OneTick, PostgreSQL, ClickHouse, Snowflake, Databricks, kdb+ or similar.
- Order book reconstruction
- Airflow, Dagster, Prefect or MLflow
- Experience supporting quantitative research or trading systems
What We're Looking For
The successful candidate will have a strong background in market data engineering with proven experience building reliable, scalable data platforms.
Our non-negotiable requirements are:
- Expert Python
- Strong SQL
- Automated data quality controls
- Deep tick and market data expertise
Experience in MLOps is advantageous but not essential. We welcome candidates with strong experience in either market data engineering or MLOps, provided they have the skills to build and operate production-grade data platforms.