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Senior Python Developer

Job in Bromley, Greater London, BR1, England, UK
Listing for: Ascendion
Full Time position
Listed on 2026-07-31
Job specializations:
  • Software Development
    Python, SQL Developer, Backend Developer, Unix/Linux
Salary/Wage Range or Industry Benchmark: 90000 - 130000 GBP Yearly GBP 90000.00 130000.00 YEAR
Job Description & How to Apply Below
  • We are hiring an experienced Senior Python Developer to join a leading global banking client.
  • This role is ideal for professionals with strong expertise in Python backend development, SQL, Linux, and software engineering best practices within an Agile environment.

Key Responsibilities:

  • Design, develop, and maintain scalable Python applications using OOP and software design principles.
  • Build and optimize backend services and batch processing applications.
  • Write and optimize complex SQL queries across PostgreSQL, MySQL, or SQL Server.
  • Work in Linux environments, including bash scripting and deployments.
  • Develop and maintain automated testing frameworks using Py Test , TDD, and BDD (Behave).
  • Manage source code using Git and participate in code reviews and CI/CD workflows.
  • Work with Agile teams using JIRA and support enterprise application delivery.

Must-Have Skills:

  • 12+ years of Python development experience.
  • Strong Python OOP and software design expertise.
  • SQL (PostgreSQL, MySQL, or SQL Server).
  • Linux/Unix and Bash scripting.
  • Experience with Autosys (or similar enterprise scheduling tools).
  • Git, JIRA, Agile/Scrum.
  • PyTest, TDD, and BDD (Behave).
  • Experience in Banking or Financial Services is highly preferred.
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Position Requirements
10+ Years work experience
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