Senior Python Backend Engineer

Description

Summary: Frenzy AI is seeking a Senior Backend Engineer to scale their Python backend for e-commerce, focusing on scalability, search, API performance, and integrating machine learning workflows. Highlights: 1. Backend-first role focused on scalability, search, and API performance 2. Integrate machine learning workflows into production environments 3. Strong ownership over production systems with direct impact Frenzy AI is building a next\-generation personalization and search platform for e\-commerce. We’re looking for a Senior Backend Engineer to help scale the Python backend powering live e\-commerce experiences. This is a backend\-first role focused on scalability, search, API performance, and integrating machine learning workflows into production environments. The ideal candidate is senior, hands\-on, self\-driven, and comfortable working in a small team where ownership and fast learning are essential. **Responsibilities*** Build and scale backend APIs for live e\-commerce use cases * Develop and improve backend functionality for search systems * Work on scalability, performance, reliability, and cost optimization * Improve API response times and server\-side platform performance * Integrate machine learning workflows into backend production systems * Build and support backend components for search, personalization, and recommendation use cases * Work with technologies such as Python, Flask, MySQL, Redis, Elasticsearch, and AWS * Own features end\-to\-end, from design and development to deployment, monitoring, and support * Collaborate closely with the backend lead and broader team while taking responsibility for core backend work **Requirements** * Strong backend engineering experience with Python, ideally Flask or Django * Proven experience building production\-grade REST APIs * Hands\-on experience with MySQL and Redis * Strong experience with Elasticsearch * Practical experience with semantic search, relevance tuning, ranking, or recommendation systems * Strong experience with AWS; ECS experience is preferred * Experience with AWS data services such as Athena, DynamoDB, Firehose, and S3 * Experience with GitHub workflows, CloudFormation, and CI/CD pipelines * Working knowledge of JavaScript and React * Proven experience operating high\-scale, low\-latency production systems * Experience working with large codebases or large applications at scale * Experience integrating AI/ML workflows into production environments * Ability to work independently, learn quickly, and contribute without heavy day\-to\-day hand\-holding * Familiarity with Shopify APIs or the Shopify ecosystem is a plus, but not required **Benefits** * Remote role open to candidates across Latin America * Opportunity to work on a high\-scale e\-commerce personalization and search platform * Backend\-first role with strong ownership over production systems * Work closely with a small team where your contributions can have direct impact * Exposure to search, recommendation systems, scalability, and AI/ML production workflows