Senior Backend Engineer (Python) – AI Platform | High-Growth FinTech - £500 Outside IR35We’re partnering with a rapidly scaling AI company transforming global debt markets. Their platform centralises proprietary credit data, deep analysis and high-value workflows for 300+ leading financial institutions worldwide.With strong product-market fit and rapid international expansion, they’re hiring a Senior Backend (Python) Engineer to take technical ownership across high-impact projects.What You’ll DoLead system design and deliver scalable backend servicesBuild and evolve APIs, data processing pipelines and automationMentor engineers and run code reviewsCollaborate closely with Product and cross-functional domain expertsContinuously improve performance, quality and developer experienceWhat We’re Looking ForStrong Python (Flask moving to FastAPI with Typing) backend experienceProven experience building APIs within service-oriented architecturesSolid SQL knowledgePostgreSQLAWS (Lambda, ECS)DockerStrong system design and data flow thinkingCollaborative mindset with high coding standardsWhat’s On OfferTop-of-market salaryPension matched up to 7%Private medical + income protection25 days holiday + hybrid workingWork abroad up to 3 months per yearLearning & development budgetIf you’re interested in joining a high-growth AI business reshaping global financial infrastructure, apply or message me directly.