Backend Software Engineer (Python)

The Emerald Group Ltd, Search and Selection; Greater London; On-site; GBP 50,000 - 70,000; Full time

Job summary

The Emerald Group Ltd, Search and Selection is seeking a mid-level Software Engineer for a hybrid role in London. You'll be developing a SaaS platform for non-life insurance business, primarily focusing on Python development. Responsibilities include managing performance for large datasets, utilizing Azure PaaS tools, and integrating Python and C# codebases. Ideal candidates will have experience with GB-scale data optimization, modular coding, and analytical pipelines.

Qualifications

• Experience handling GB-scale datasets (4GB+) and optimizing performance.
• Proficient in writing modular, production-quality Python code.
• Experience in building end-to-end analytical pipelines.

Responsibilities

• Manage performance bottlenecks for large datasets.
• Utilize Azure tools for cloud infrastructure.
• Integrate Python and C# codebases.

Skills

Large Dataset Management

Advanced Python Logic

Analytical Pipelines

C# literacy

Tools

Azure PaaS

Job description

Join a team developing a SaaS platform used to assess over £200bn of non-life insurance business. This is a mid-level software engineering role focused on production-grade Python development rather than research or one-off analysis. Hybrid role based in London (2 days per week in office)

You will work in a team of 15, collaborating with C# developers and actuarial data scientists to deliver scalable features.

The role

• Technical Challenge: Take ownership of performance bottlenecks involving 4GB+ datasets.
• Cloud Infrastructure: Utilize Azure PaaS tools including Functions, Batch, Blob/Table Storage, and CosmosDB.
• Integration: Work on the integration and restructuring of Python and C# codebases to improve cohesion.
• Standards: Apply software engineering best practices including OOP, unit testing, and CI/CD.

To be successful in this role, you must demonstrate specific experience in:

• Large Dataset Management: A track record of handling GB-scale data (4GB+) and addressing performance via vectorisation, parallelism, or memory optimisation.
• Advanced Python Logic: Writing modular, production-quality code using classes/functions and addressing bottlenecks via chunking or asynchronous processing.
• Analytical Pipelines: Building end-to-end pipelines that handle data ingestion, transformation, and modelling.
• C# literacy: Ability to read and understand C# - not necessary to write, but understanding of cohesion between Python & C# is desirable.