Senior Python Backend Engineer
Workana • Uruguay • Mexico
Posted: May 4, 2026
Job Description
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
Additional Content
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