Our client is a leading global proprietary trading firm operating at the intersection of technology, quantitative research, and financial markets. With a strong engineering culture and a long-term outlook on technology investment, they build highly performant, research-driven trading systems that operate at scale across global markets.They are seeking aSenior Software Engineer (Python)to join a core options trading strategy development team in Dublin. This role sits close to trading and quantitative research, building critical platforms that underpin research, analysis, and live trading.The RoleAs a Senior Software Engineer, you will be responsible for the ongoing development, maintenance, and evolution of aPython-based quantitative research and trading platform. This platform enables researchers and traders to rapidly analyse data, test ideas, and deploy new trading strategies in a production environment. You will work closely withTraders, Quantitative Researchers, and Strategy Developers, contributing directly to new trading capabilities and improving the performance, stability, and usability of core systems.Key ResponsibilitiesDesign, build, and maintain a Python-based platform supporting quantitative research and tradingContinuously improve system stability, performance, and usabilityCollaborate directly with traders and quantitative researchers to enable new trading behaviours and workflowsWork with large-scale datasets, building and maintaining production-grade data pipelinesDevelop and support distributed, message-based systems used in live trading environmentsParticipate in the deployment, monitoring, and support of production systemsContribute ideas and technical solutions to improve processes, tooling, and architectureRequired BackgroundDegree in Computer Science, Engineering, or a related technical/scientific discipline5+ years of professional Python development experienceStrong experience with the Python scientific ecosystem (e.g. NumPy, pandas, SciPy)Experience building server-side software and distributed, message-based systemsExposure to web services and Python development frameworksExperience across the full software development lifecycleFamiliarity with agile development practicesWhat They're Looking ForA pragmatic engineer who enjoys working close to the business and seeing real-world impactSomeone comfortable owning systems and driving continuous improvementStrong communication skills and the ability to work effectively with non-engineering stakeholdersHigh attention to detail and the ability to adapt to changing prioritiesA willingness to learn new technologies and propose innovative technical solutionsSelf-motivated, accountable, and comfortable working in a fast-paced trading environmentWhy Join?Work directly on systems that influence real-time trading decisionsCollaborate with top-tier traders and quantitative researchersOperate in a meritocratic, low-bureaucracy engineering cultureTackle complex technical and data challenges at scaleLong-term, stable environment with significant investment in technologyApply Now