Senior Python Backend Engineer

Descripción del puesto

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 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 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

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