Senior Python Backend & Data Engineer: Own the Stack

SCALIS; New York (NY); Remote; USD 120,000 - 180,000; Full time

Job summary

Bold Business, an AI-first U.S.-based company, is hiring a Senior Python Engineer who can own both backend systems and the data layer behind them. You will build production APIs, design pipelines, and ensure the data powering AI systems is clean and reliable, sitting between backend and data under a Lead Architect.

You’ll own end-to-end data pipelines, APIs, and databases, collaborating with an US-based team.

Qualifications

• Python (4–6 years, production backend + data work)
• FastAPI or similar frameworks
• Strong SQL and database design
• API integrations (REST, webhooks)
• Testing and clean Git workflows
• Understanding of how RAG systems use data
• Prompt structure and output handling
• Exposure to vector databases (pgvector, Pinecone, etc.)

Responsibilities

• Build and maintain production Python APIs (FastAPI or similar)
• Design and run data pipelines (ETL, ingestion, transformation)
• Own data quality — validation, monitoring, failure handling
• Structure data for RAG systems and AI agents
• Design and manage databases (PostgreSQL + vector DBs)
• Integrate external systems (APIs, webhooks, third-party tools)
• Debug across backend, data pipelines, and AI outputs

Skills

Python

FastAPI

SQL

API integrations

Testing

RAG data handling

Prompt structure

Vector databases

Tools

PostgreSQL

Vector databases

LangChain

pgvector

Pinecone

Job description

Bold Business, an AI-first U.S.-based company, is hiring a Senior Python Engineer who can own both backend systems and the data layer behind them. You will build production APIs, design pipelines, and ensure the data powering AI systems is clean and reliable, sitting between backend and data under a Lead Architect.

You’ll own end-to-end data pipelines, APIs, and databases, collaborating with an US-based team.