> Markdown version of [/jobs/ext/4534767-staff-backend-engineer-ai-fintech-start-up-remote-eu](https://www.wearedevelopers.com/jobs/ext/4534767-staff-backend-engineer-ai-fintech-start-up-remote-eu). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Staff Backend Engineer | Ai Fintech Start-Up | Remote Eu

- **Company:** Oliver Bernard Ltd.
- **Location:** Santiago de Compostela, Spain (Remote available)
- **Salary:** €140,000.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Business Logic, Databases, Continuous Integration, Django Web Framework, Python (Programming Language), PostgreSQL, SQL Databases, Web Application Frameworks, Flask (Web Framework), Backend, Fastapi
- **Published:** November 3, 2026
- **Apply:** https://www.buscojobs.com.es/staff-backend-engineer-ai-fintech-start-up-remote-eu-en-santiago-de-compostela-ID-378463208

## About the Role

5+ years' backend engineering experience (language agnostic)
Deep experience with complex business logic products
Strong database skills: PostgreSQL, SQL, ORMs, migrations and schema design
Experience deploying on AWS (or similar), with solid CI/CD and production-readiness fundamentals
Hardcore work ethic and high agency
Pragmatic, fast-moving and curious, someone who makes decisions based in reality, not theory
Python and a modern web framework (FastAPI, Flask or Django) is a bonus

## Description

I'm working with a VC-backed, rapidly scaling AI-native fintech start-up that is rebuilding the financial system of record for modern businesses. Backed by top-tier US investors, they've grown quickly in a short space of time, serving customers from high-growth companies through to publicly traded enterprises.You'll be building and shipping end to end: designing backend systems and APIs that run real-time, business-critical accounting logic, owning everything from architecture and CI/CD through to testing and monitoring. The team deploys daily, moves fast and never waits for permission.We're Looking For5+ years' backend engineering experience (language agnostic)Deep experience with complex business logic productsStrong database skills: PostgreSQL, SQL, ORMs, migrations and schema designExperience deploying on AWS (or similar), with solid CI/CD and production-readiness fundamentalsHardcore work ethic and high agencyPragmatic, fast-moving and curious, someone who makes decisions based in reality, not theoryPython and a modern web framework (FastAPI, Flask or Django) is a bonusKey InfoFully Remote | EU$140k-$250k base + equityB2B or EORVC-backed | Rapidly scaling | Significant equity ownershipHigh-speed, high-trust environment | Your feedback shapes the product directly#J-*****-Ljbffr