Senior Python Developer | Fully Remote | 6 Months | Build a New Multi-Asset Security Data Platform | Python, PostgreSQL, Pandas/Polars

The Opportunity

We're looking for a Senior Python Developer to join a data-focused team working on a new Security Master platform for a financial services client.

The project will involve building a multi-asset security data service covering equities, fixed income, funds and alternative assets across both the UK and US markets.

You'll work alongside an established client Data Team, contributing hands-on Python development to the ingestion, processing and distribution of critical financial data.

This is an exciting opportunity for a senior developer who enjoys working with data-intensive systems, Python and modern cloud technologies, with the opportunity to develop further expertise within the financial services domain.

What You'll Be Doing

• Contribute to the development of a new Security Master / security data service.

• Build and maintain Python-based data ingestion and processing pipelines.

• Ingest, clean, transform and process security reference data, daily pricing data and corporate actions.

• Work with multi-asset data covering equities, fixed income, funds and alternative assets.

• Support the internal distribution of high-quality, reliable security data.

• Work closely with the client's Data Team and wider technical stakeholders.

• Develop robust, maintainable and scalable Python solutions.

• Work with relational databases, particularly PostgreSQL.

• Use modern Python data tools such as Pandas and/or Polars.

• Contribute to development workflows using Git and Jira.

• Help ensure data quality, consistency and reliability throughout the platform.

What We're Looking For

• Strong commercial experience as a Senior Python Developer / Software Developer.

• Excellent hands-on Python development skills.

• Experience working with PostgreSQL.

• Strong experience working with data processing libraries such as Pandas and/or Polars.

• Experience working with data ingestion, transformation or processing pipelines.

• Comfortable working within collaborative development environments using Git and Jira.

• Strong problem-solving skills and an ability to work with complex datasets.

• Able to work effectively alongside data engineers, developers and wider technical teams.

Nice to Have

• Knowledge or experience within financial markets / securities.

• Experience working with GCP BigQuery.

• Experience with GCP Cloud SQL.

• Experience with Terraform.

• Experience with Apache Airflow.

• Understanding of security reference data, pricing data or corporate actions.

The Project

The wider project is focused on creating a multi-asset Security Master, bringing together and standardising security data across UK and US markets.

The platform will cover:

Equities | Fixed Income | Funds | Alternative Assets

with a focus on:

Security Reference Data | Daily Pricing | Corporate Actions | Data Ingestion | Data Processing | Internal Data Distribution

You'll be joining the project as a hands-on Python specialist, working alongside the client's existing domain and architecture expertise.

Senior Python Developer | Fully Remote | Build a New Multi-Asset Security Data Platform | Python, PostgreSQL, Pandas/Polars

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