Sr Backend Developer |

Sr Backend Developer

Job Description

Job Description

This is not a pure backend role, nor is it a "ticket-closing" position. It is a hands-on role focused primarily on Backend + Data Engineering (80%), where the engineer owns features end-to-end: from data ingestion, ETL processing, BigQuery, and APIs, all the way to shipping on the frontend (React/Next.js/TypeScript) using AI tools (Claude, Cursor, GitHub Copilot).

Responsibilities

Responsibilities

Backend & APIs: Build and maintain Python backend services, APIs, and asynchronous workflows in production.
Data Engineering & SQL: Design and optimize ETL pipelines, scheduled jobs, and complex BigQuery queries on large historical and real estate datasets (30,000+ ZIP codes).
GCP Infrastructure: Manage Google Cloud Platform services (Compute Engine, BigQuery, Cloud Storage, Pub/Sub, monitoring, and load balancing).
Optimization & Caching: Precompute, package, compress, and cache data to serve high-traffic applications efficiently.
AI-Enabled Full-Stack Development: Make frontend adjustments (React, Next.js, TypeScript) using AI assistants to connect backend APIs to the UI without needing a dedicated frontend developer.
Product Ownership & Analytics: Monitor features in production to evaluate user adoption and performance using product analytics (PostHog).

Requirements

Requirements

Python & APIs: Strong professional experience developing production backend systems and APIs in Python.

BigQuery & Advanced SQL: Deep expertise with BigQuery and advanced SQL working with large datasets (historical/geographic data).

Production GCP: Direct experience managing GCP infrastructure (Compute Engine, Cloud Storage, Pub/Sub).

ETL & Async Processing: Experience building ETL pipelines, background jobs, queues, and asynchronous workflows.

Functional Frontend Skills: Enough React / Next.js / TypeScript knowledge to productively work inside an existing frontend codebase.

AI-Native Development: Daily hands-on use of AI coding tools (Claude, Cursor, Copilot) for refactoring, writing tests, and building frontend components.

Communication & Availability: Fluent English for daily 1:1 calls with the CEO and full availability during Central Time hours.

Preferred Qualifications

Experience working with Shopify Plus stores.

Knowledge of Node.js and backend integrations.

Experience with headless CMS platforms such as Contentful, Sanity, or Strapi.

Familiarity with Google Analytics, GTM, SEO, and conversion rate optimization (CRO).

Exposure to Agile/Scrum development methodologies.

Experience working in distributed or cross-functional teams.

Key Deliverables

End-to-end implementation and maintenance of Shopify storefronts.

Development of both Hydrogen and Liquid-based eCommerce experiences.

Custom theme development, enhancement, and optimization.

High-performing, scalable, and conversion-focused online shopping experiences.

Reliable integration of third-party applications and enterprise systems.

Continuous improvement of site performance, usability, and customer experience.

Contact

share your updated resume:

contact@nir-yu.com