Senior Software Engineer - Python + ReactSalary: CompetitiveLocation: Braintree, EssexWork Pattern: HybridOpportunity OverviewWe are working with a forward-thinking technology company developing cutting-edge solutions within the utilities sector. Their cloud-native platform integrates software, hardware, and distributed energy assets to enable real-time monitoring, automation, and control at scale.They are now looking to hire a Senior Software Engineer to play a key role in shaping the technical direction of their platform. This is a hands-on position combining strong engineering delivery with architectural ownership, offering the opportunity to work on complex, real-world systems across IoT, cloud infrastructure, and large-scale data environments.Key ResponsibilitiesDesign, build, and operate scalable backend systems using Python (Django) and AWSLead architectural decisions across performance, scalability, reliability, and securityDesign and evolve APIs and data models for internal tools and customer-facing applicationsDrive IoT and device communication architecture across distributed systemsCollaborate with product and design teams to translate real-world requirements into scalable solutionsContribute to frontend development using React and supporting infrastructureBuild and optimise pipelines for ingesting and querying large-scale time-series dataImprove system performance, data retention strategies, and reporting capabilitiesWork closely with hardware and edge teams on de