Contract Senior Python Software Engineer

1 week ago

London Area, United Kingdom X4 Technology Full time

Roles: Senior Python Software EngineerProject: Real-time trading platform (LNG trading)Location: London (hybrid 3 days per week)Contract: Initial 6 months (scope to 2027)Rate: £700-800/d inside IR35Want to work a mission-critical trading platform for an LNG trading team operating at the multi-billion-dollar scale? Do you thrive in environments where speed, precision, innovation and best practice software development are non-negotiable? If so, X4 are partnered with one of world’s leading energy trading firms to hire a contract Senior Python Engineer for a flagship, front-office engineering team.Project: You’ll help engineer a real-time trading platform that ingests and transforms high-volume data from exchanges, ETRMs and data warehouses into a central system used directly by LNG traders. This application drives multi-billion-dollar trading decisions - long/short, hedge, arbitrage - and is the most visible platform across LNG trading. It sits at the centre of several connected systems, delivering deep, real-time insights as market data flows in. With secured funding for enhancements through to 2027, this hire is critical to delivering the upcoming pipeline.Team: Join a highly skilled group of five full-stack Python engineers, working directly with traders and quant analysts, with real front-office exposure and a clear path to leadership.Tech stack: No legacy. No outdated stacks. Pure modern engineering, working with a cutting-edge toolset that keeps your skills fresh and highly relevant.Python: advanced use, scientific libraries, data engineering toolingAzure: auth, storage, databases, deployment patternsDatabricks: Delta tables, Unity CatalogAI/ML: scope to embed directly into the platformDevOps: Kubernetes, Terraform, IaC, caching (Redis or similar)Testing & CI/CD: automated testing, design patterns, high-scale architectureFront end: Python Panels, React, grids—full-stack mindset requiredRequirements for the contract Senior Python Software Engineer (Commodities)Senior-level Python engineer working at enterprise scaleExperience building robust, scalable, testable applications - not scripts, notebooks or quant toolingStrong architecture/design thinking; can design performant systems end-to-endStrong Azure deployment experienceData engineering familiarity (Databricks, Delta, ETL concepts)DevOps experience (Kubernetes, Terraform, CI/CD)Full-stack exposure (Python front-end frameworks or React)Trading/commodities knowledge is a bonus, but world-class engineering ability is the key requirement.Please apply online for immediate consideration

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