Senior AI Platform Engineer; Python + AWS

About the job Senior AI Platform Engineer (Python + AWS)

Remote | LATAM | Full-Time

One of Talent Cross's most innovative and high-impact clients is hiring a Senior AI Platform Engineer to help build the backbone of their AI infrastructure. This is a rare opportunity to work with a fast-scaling SaaS company that's transforming a legacy industry with cutting-edge technology and a global-first mindset.

You'll lead the design and delivery of a mission-critical AI platform layer that powers all products across the company. This includes:

• Building cloud-native APIs in Python (FastAPI) on AWS (API Gateway, Lambda, ECS Fargate)
• Defining OpenAPI 3.1 specs and generating SDKs (PHP, JS) for seamless integration
• Optimizing performance with caching, idempotency, rate limiting, and request deduplication
• Engineering fault-tolerant systems with circuit breakers and policy-based routing
• Implementing observability dashboards using Cloud Watch and Datadog
• Orchestrating async jobs via SQS, Step Functions, and Event Bridge
• Collaborating with product teams to ensure smooth developer experience
• Driving cost and model quality optimization initiatives

• 5+ years backend development experience
• 3+ years with Python (FastAPI preferred), async programming, and streaming
• 2+ years working with distributed/cloud-native systems
• Proven experience designing REST APIs with OpenAPI 3.1
• Familiarity with LLM platforms (Amazon Bedrock, OpenAI, Gemini, etc.)
• Solid understanding of security best practices and CI/CD workflows

• Experience with semantic caching, vector databases, or RAG architectures
• Familiarity with AI/ML evaluation pipelines and prompt management

You'll be building the central nervous system for all AI-powered features—high visibility, high impact, and a mandate to deliver reliability, performance, and security  team is remote-first, globally distributed, and deeply committed to innovation.