Windsor AI

Backend Engineer

Posted 4 Days Ago

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5 Locations

In-Office or Remote

Mid level

Big Data • Software • Analytics • Business Intelligence

The Role

Build and maintain Python-based marketing data integration and ELT pipelines. Own third-party API integrations, including authentication, pagination, rate limits, and error handling. Develop tested production code, improve pipeline performance through concurrency and caching, and support scalable data modeling. Collaborate asynchronously with engineering, product, and support teams in a fully remote environment.

Summary Generated by Built In

6,000+ Customers. 300+ Integrations. Your Code Moves the Data.

At Windsor.ai, we connect data from 300+ sources (Facebook Ads, Google Ads, GA4, HubSpot, Salesforce, TikTok) to 30+ destinations (Looker Studio, BigQuery, Snowflake, and LLMs like ChatGPT and Claude). We're a lean, highly technical remote team serving 6,000+ customers, and we're looking for a Backend Engineer to help scale the platform behind it.

The Role

You'll build and maintain the Python pipelines at the core of our marketing data integration and ELT platform: pulling data from third-party APIs, normalizing it, and delivering it reliably at scale.

Own API integrations end to end: rate limits, pagination, custom authentication, and inconsistent error handling across hundreds of sources.
Ship production-grade code: clean, tested Python with pytest coverage and code review as routine.
Keep pipelines fast and reliable: concurrency, caching, and smart data modeling as volume grows.
Work async with a small, senior team: engineers, product, and support. Basic SQL is expected of everyone.

Stack: Python (Flask, multi-threading), pytest / pytest-xdist, pylint, PostgreSQL, Redis, Linux, Docker, GitLab CI/CD, Taiga.

Who You Are

4+ years of professional programming experience with strong production-grade Python
Solid grasp of OOP, concurrency (threads/async), and data structures
Comfortable in Linux development and production environments
Experience integrating third-party APIs and dealing with their quirks
Independent, async, and comfortable in a fully remote, contractor-style engagement

Bonus: ETL/ELT or data integration experience · marketing/ad-tech APIs · PostgreSQL and Redis in production · Docker and GitLab CI/CD

The Offer

Competitive Pay / Contractor role
Fully remote
Real impact: your code runs in production for 6,000+ customers

Skills Required

4+ years of professional programming experience
Strong production-grade Python experience
Understanding of object-oriented programming, concurrency, and data structures
Experience with Linux development and production environments
Experience integrating third-party APIs
Basic SQL knowledge
ETL, ELT, or data integration experience
Experience with marketing or ad-tech APIs
Production experience with PostgreSQL and Redis
Experience with Docker and GitLab CI/CD

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The Company

Year Founded: 2017

What We Do

Windsor.ai provides a no-code data integration platform that connects more than 350 business platforms and automatically transfers data into business-intelligence tools, spreadsheets, data warehouses, and AI chats. Its connectors help organizations centralize data, simplify collection and integration, and make information more accessible for analytics, reporting, and decision-making without requiring extensive engineering work across daily operations. The platform is designed for growing business teams worldwide.