Senior Full-Stack Engineer (Frontend-Leaning)London (Hybrid - 2 days/week in office)£70,000 - £85,000 + BenefitsMethod Resourcing are working with a London-based engineering team hiring a Senior Full-Stack Engineer with a strong Front End focus to join a project building a production-critical trading platform for a major enterprise client.This is a long-running, evolving system rather than a greenfield build, where the focus is on performance, reliability, and clean architecture. The role is Front End-leaning (around 70-80% React), but you''ll still be working across the stack using modern JavaScript and Node.js, taking ownership of features from design through to production while contributing to wider architectural decisions.The platform includes complex, data-heavy interfaces and Real Time elements, and is supported by modern infrastructure, including containerisation with Docker and Kubernetes, alongside observability tooling such as Grafana and Prometheus.What they''re looking for6-10+ years of software engineering experienceStrong, hands-on React in production environmentsSolid experience with JavaScript across the stackExcellent JavaScript fundamentals (non-negotiable)Experience working on complex, production systemsExposure to system design and architecture decisionsWhy this roleOwnership of a business-critical trading platformOpportunity to influence architecture and engineering standardsWork on complex, non-trivial Front End challengesJoin a high-calibre, senior engi