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Senior Python Developer - Digital Trading Analytics

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Randstad

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Location:
United Kingdom , London

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Contract Type:
Not provided

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Salary:

Not provided

Job Description:

We are looking for a Senior Python Developer to design, build, and maintain high‑performance, scalable solutions supporting financial market analytics. This is a high-impact role sitting at the intersection of complex data engineering and front-office trading systems. You will play a key role in shaping engineering practices, guiding architectural decisions, and leading junior engineers to deliver business-critical solutions.

Job Responsibility:

  • Design and deploy scalable, high-performance software for data processing and trading analytics
  • Lead architectural decisions, conduct rigorous code reviews, and mentor junior engineers
  • Partner with Traders, Quants, and Product Managers to translate market requirements into robust technical solutions
  • Drive CI/CD automation, TDD/BDD practices, and containerised deployments via Kubernetes
  • Diagnose and resolve bottlenecks in production systems to ensure low-latency data delivery

Requirements:

  • Expert-level Python 3.9+ (Design Patterns, OOP, logical data modelling, pandas, SQLAlchemy)
  • High-scale workload experience using Parquet or Arrow
  • Mastery of SQL Server or PostgreSQL (tuning, joins, transactions, and complex aggregations)
  • Hands-on experience with AWS or Azure, Docker, and Kubernetes (Helm, StatefulSets)
  • Proficiency in CI/CD pipelines (Azure DevOps/Jenkins) and Python test automation
  • 7+ years of professional software development experience
  • Proven track record within Financial Services (Investment Banking, Hedge Funds, or FinTech)
  • Bachelor's degree or higher in Computer Science, Engineering, or a related quantitative field
  • Exceptional ability to engage with business stakeholders and thrive in a fast-paced environment

Additional Information:

Job Posted:
February 25, 2026

Expiration:
March 05, 2026

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