Backend Engineer

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

**At** [**Windsor.ai**](http://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**