Python Developer

Senior Python Developer (Contract)

Location: London (Hybrid)

Duration: 12 months

Rate: £650 – £850 per day (INSIDE IR35)

Who we are?

A leading quantitative technology and investment firm specializing in large-scale data analysis, advanced research, and high-performance computing to drive systematic trading strategies across global financial markets. The organization combines cutting-edge engineering, machine learning, and quantitative research to build highly scalable platforms that process vast amounts of data and support real-time decision-making in a fast-paced, technology-driven environment.

Please only apply if you are an expert in BE Development in Python and have experience building platforms from scratch (Ideally in Python, although other BE languages such as C++ will be considered in this regard)

Who are we looking for?

The ideal candidate will have the following skills and experience:

– Expert-level Python, with experience designing large codebases rather than scripting & building platforms from scratch in Python

– Significant experience designing CI/CD pipelines beyond basic Jenkins

– Proven ability to design modular, maintainable systems with clean APIs and contracts

– Strong testing discipline across unit, integration and end-to-end testing

– 7–10 years of experience in software engineering roles

– Excellent communication skills, with the ability to collaborate effectively across teams

Key responsibilities of the role include:

– Designing and building the central automation and reporting platform in Python

– Building a custom data orchestration engine to copy, move and sync data across platforms, sites and storage tiers

– Delivering world-class self-service tooling for non-technical users

– Implementing a tiered storage strategy to maximise GPU farm efficiency and minimise storage cost

– Building proactive monitoring, health checking and operational dashboards

– Following established coding standards, participating in code reviews, and maintaining CI/CD quality gates and infrastructure-as-code discipline

The following are desirable but not essential:

– Experience with Go and/or Rust

– CockroachDB or similar distributed SQL databases

– HPC or storage domain knowledge

– Workflow orchestration tools such as Temporal, Airflow or Prefect

– Data movement tooling at scale

– Front-end development experience with frameworks such as React