Senior Backend Engineer — Real-Money Execution & Reliability
Summary
A senior backend engineer owns load-bearing, permanent full-time execution-path code at Xavvy Limited — the guardrails engine, executors, broker adapters, and scheduler — with real financial impact. Core stack is Python, FastAPI, SQLAlchemy, PostgreSQL at production scale, and async scheduling with APScheduler.
Xavvy Limited in the United Kingdom is seeking a trusted engineer to work on guardrails_engine, the executors, broker adapters, the scheduler—load-bearing, permanent full-time.
You should know Python, FastAPI, SQLAlchemy, Postgres at production scale, and Async scheduling with APScheduler or equivalent; you will own execution-path code with real financial impact.
Experience with broker/exchange API integration and debugging money-sensitive incidents is a strong plus.