Senior AI Platform Engineer (Python + AWS)

Talentcross; Kansas; Remote; USD 120,000 - 150,000; Full time

Job summary

A leading tech recruitment firm is seeking a Senior AI Platform Engineer to build the core AI infrastructure for a fast-scaling SaaS company. You will lead the development of cloud-native APIs and design mission-critical systems. The ideal candidate has over 5 years of backend experience and strong knowledge of Python, with an emphasis on async programming. This fully remote role emphasizes innovation and high impact, offering a unique chance to shape AI-powered features.

Qualifications

• 5+ years backend development experience.
• 3+ years with Python (FastAPI preferred), async programming, and streaming.
• 2+ years working with distributed/cloud-native systems.

Responsibilities

• Lead the design and delivery of a mission-critical AI platform layer.
• Build cloud-native APIs in Python on AWS.
• Define OpenAPI 3.1 specs and generate SDKs for seamless integration.

Skills

Backend development

Python (FastAPI preferred)

Async programming

REST APIs design

Familiarity with LLM platforms

Job description

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

Remote | LATAM | Full-Time

One of TalentCross'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.

What You'll Be Doing

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 CloudWatch and Datadog
• Orchestrating async jobs via SQS, Step Functions, and EventBridge
• Collaborating with product teams to ensure smooth developer experience
• Driving cost and model quality optimization initiatives

What You Bring

• 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

Bonus Points For

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

Why This Role Stands Out

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 at scale. The team is remote-first, globally distributed, and deeply committed to innovation.