Principal Python Engineer London | Permanent | Hybrid Ncounter is supporting a global investment firm in hiring a Python Developer to help design and evolve internal compute frameworks that underpin their trading and research platforms. This is a high-impact role, working at the intersection of software engineering and distributed systems, with the opportunity to build scalable tools and frameworks used across the business. What you’ll do: * Design, develop, and maintain performant, reliable frameworks and services in Python * Build productivity tools and platforms that streamline workflows across investment and technology teams * Contribute to code reviews and best practices, improving overall development quality * Work across distributed systems, containers, and automation pipelines to deliver scalable solutions What we’re looking for: * 6 years’ professional software development experience * Strong proficiency in high-performance Python (deep ecosystem knowledge and best practices) * Experience with at least one JVM language (Java, Kotlin, Scala) is an advantage * Background in distributed systems and large-scale compute frameworks * Familiarity with Docker, Kubernetes, Linux environments, and CI/CD automation This role offers the chance to work on complex technical challenges at scale, with direct impact on high-performance computing platforms. If you’re a skilled Python engineer with distributed systems expertise and want to join a world-class engineering environment, apply today for a confidential conversation