Senior Developer (Python and React) Job at City, Belfast Full Time

MCS Group delighted to be working with an innovative and rapidly growing technology organisation as they look to appoint a Senior Software Developer to join their expanding engineering team in Belfast.This is an excellent opportunity for an experienced engineer who enjoys working across complex systems, influencing technical direction, and building scalable software solutions within a modern, collaborative development environment.The successful candidate will play a key role in architecture, solution design, and hands-on development across both backend and frontend technologies, helping deliver robust, high-performing platforms used across a large operational environment.The RoleLead the design and delivery of scalable software solutions from concept through to deploymentContribute to architecture decisions and technical strategy across multiple systemsDevelop backend services primarily using Python, alongside Go for performance-focused servicesBuild modern frontend applications using React, JavaScript, and TypeScriptDesign and integrate RESTful APIs and authentication flowsWork within cloud-hosted environments across Azure and AWSCollaborate closely with engineering teams and wider business stakeholdersMentor and support other developers within the teamTech EnvironmentYou’ll be working across a modern engineering stack including:Backend: Python, GoFrontend: React, JavaScript, TypeScriptREST APIs & OAuthPostgreSQL & MySQLAzure & AWS Cloud Platforms.What We’re Looking ForStrong full-stack development backgroundStrong understanding of scalable architecture and software design principlesExperience building APIs and cloud-based systemsStrong frontend development experience with React and TypeScriptExcellent communication and stakeholder engagement skillsPrevious experience mentoring or supporting developers is advantageousWhat’s On OfferCompetitive salary and comprehensive benefits packageHybrid working modelOpportunity to work with modern technologies and cloud platformsStrong career progression opportunitiesCollaborative engineering culture with real technical ownershipExposure to large-scale and impactful software projects

To speak in absolute confidence about this opportunity, please send an up to date CV via the link provided or contact Matthew Rainey at

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