Python Developer
Hybrid
Chester, United Kingdom
Freelance
03-04-2025
Job Specifications
My Client are looking for a highly skilled Python Developer to join their team in Chester on a 6 month rolling contract hybrid 2 days a week in the office to drive the development of robust, scalable, and high-performance applications.
The ideal candidate must have strong expertise in Python (OOP principles), SQL, and Linux environments, along with experience in job scheduling (Autosys), version control (GIT), and Agile development tools (JIRA). A strong leader with excellent communication skills and the ability to work autonomously is a must. Additionally, familiarity basic trading concepts will be a plus.
Key Responsibilities
• Design, develop, and optimize Python-based applications, ensuring clean, efficient, and scalable code.
• Work with very large volume SQL databases(100’s of millions) to design schemas, optimize queries, and ensure data integrity (MsSQl server predominantly).
• Manage and deploy applications in Linux environments, including scripting and automation.
• Utilize GIT for version control, ensuring proper branching, merging, and code reviews.
• Work within JIRA-based Agile workflows, managing tasks, sprints, and project tracking.
• Troubleshoot and resolve performance bottlenecks, application bugs, and system issues.
• Develop and maintain job scheduling workflows using Autosys.
• Mentor junior developers and lead the development team in adopting best coding practices and new technologies.
• Ability to understand data and perform data analysis
Required Skills & Qualifications
• 12+ years of experience in Python development with expertise in OOP and software design principles.
• Strong knowledge of SQL (PostgreSQL, MySQL, or SQL Server) for complex queries and database optimization.
• Hands-on experience with Linux environments (bash scripting and deployment).
• Experience with Autosys
• Proficiency in GIT (branching strategies, code versioning, pull requests, and merging workflows).
• Experience using JIRA for Agile project management.
• Strong knowledge of Test-Driven Development (TDD), BDD (Behave), and Unit Testing (PyTest)
• Understanding of basic trading concepts (asset classes, trading venues, market structures) is a plus.
• Strong analytical and problem-solving skills, with a keen attention to detail.
• Excellent communication, leadership, and mentoring skills.
• Understanding CI/CD pipelines to develop and maintain code efficiently (knowledge of Jenkins/Ansible favourable)
About the Company
With over 25 years in the technology recruitment sector, Square One is an award-winning specialist recruitment agency. Based in London, we manage recruitment on an international scale with clients ranging from start-ups to global corporations. Our goal is to offer a comprehensive recruitment service for our clients, building long-term relationships with them to ensure candidates receive the best career opportunities possible. Our consultants continually upskill, ensuring that they're at the forefront of industry, market an... Know more
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