Staff Backend Engineer (Up to $250k)

Senior / Staff Backend Engineer | $140k to $250k + $50k to $80k Equity | Remote, EST Overlap One of the fastest-growing AI startups in the US, building an AI-native ERP platform for modern finance teams. Founded in 2024, the business has raised more than $100m from leading venture funds and experienced technology operators. Its platform is already used by businesses ranging from $5m ARR companies through to NYSE-listed organisations. The team is rebuilding a large, outdated software category from the ground up, automating complex accounting workflows and replacing legacy on-premise systems. This is an intense, high-output environment. The working culture is comparable to a 996 model, with long days and regular weekend work expected. It will not suit someone looking for conventional hours or strong work-life balance. The Role You will own complex backend systems from architecture through to deployment, supporting real-time and business-critical accounting workflows. Responsibilities Design and build core backend services, APIs and infrastructureDeliver production features from initial design through to deployment and monitoringTranslate complex finance and accounting workflows into reliable software systemsOwn database architecture, schema design, migrations and performanceIntegrate external platforms while managing edge cases and operational riskImprove CI/CD, testing, observability and overall production readiness Requirements 5+ years of backend engineering experienceStrong experience building complex, business-logic-heavy productsDeep knowledge of APIs, relational databases and distributed backend systemsExperience deploying and operating production systems on AWS or similarStrong PostgreSQL, SQL, ORM and database migration experienceComfortable working at significant pace, including evenings and weekends Tech Stack Python, FastAPI, Flask or Django, PostgreSQL, SQL, AWS, CI/CD and modern cloud infrastructure. Requirements and Constraints Remote, with meaningful overlap with New York working hoursFluent English requiredThis is effectively a 996-style environmentRegular weekend work is part of the roleVisa sponsorship may be available for relocation to New York after two or more years Package $140,000 to $250,000 base salary$50,000 to $80,000 in equity27 days of annual leave, including public holidaysLearning and development budgetHome office, internet and phone support