Lead Backend Architect – Python/AWS, Scale‑Up FinTech

Oliver Bernard is hiring a Principal Software Engineer for a Series A AI/fintech company in London. The role requires over 8 years of experience in building and scaling backend systems, specifically in high-growth B2B SaaS environments. You will design backend abstractions, scale multi-tenant infrastructure, and support high-throughput document processing. Strong Python skills and a Computer Science degree from a top-ranked university are essential. This position offers the opportunity to work closely with leadership and drive the evolution of critical backend systems.
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