> Markdown version of [/jobs/ext/4638449-senior-python-software-engineer](https://www.wearedevelopers.com/jobs/ext/4638449-senior-python-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Python Software Engineer - **Company:** Old Mission, LLC. - **Location:** New York, NY, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Algorithmic Trading, Big Data, Relational Databases, Linux, Distributed Systems, Systems Theories, Python (Programming Language), Ceph (Software), Information Technology, Apache Kafka - **Published:** November 8, 2026 - **Apply:** https://www.juju.com/job/28_25303_7e0e5104966074cd7c6cbe1d6b4e1368 ## About the Role We are actively hiring a Senior Python Software Engineer with a passion for building reliable systems at scale. This role involves developing and supporting execution platforms, real-time trader-facing applications integrated with our trading systems, large-scale data and research systems, and automation of trader workflows. You will bring proven expertise in Python to distributed systems supporting global trading across the firm., * Bachelor's degree in Computer Science, Mathematics, or a related Engineering/Science discipline * A minimum of 5 years of professional Python experience in a production environment * High proficiency in Python on Linux Platforms * Familiarity with relational databases and/or enterprise messaging/object storage (Kafka, Ceph, Iceberg) * Exceptional written and verbal communication skills * A collaborative team player with a knack for owning and driving exciting projects * Thrives in a fast-paced work environment, showcasing effective problem-solving abilities