Senior .NET AI Platform Engineer

Role : Senior .NET AI Platform Engineer

Location: Brazil (Remote)

Experience: 8+ Years

Required Qualifications

• 8+ years of professional software engineering experience, with deep C#, .NET, ASP.NET Core, API design, distributed-systems, and automated-testing expertise.

• Production experience designing agentic or LLM-enabled systems with orchestration, tool calling, context management, structured outputs, evaluation, and failure recovery.

• Strong AWS architecture and operations experience across containers or serverless compute, messaging, workflows, identity, secrets, networking, observability, and CI/CD.

• Experience integrating an enterprise LLM platform through governed interfaces and designing provider-neutral contracts.

• Experience with authorization, workload identity, secure connectors, secrets, PII protection, auditability, and AI threat modeling.

• Experience establishing evaluation gates, telemetry, cost controls, and production incident diagnostics for AI or distributed platforms.

• Strong architectural communication, technical decision-making, code-review, and mentoring skills.

Preferred Qualifications

• Hands-on Microsoft Foundry experience, especially from AWS-hosted applications.

• Mortgage, servicing, lending, financial-services, regulated-data, or enterprise document-processing experience.

• Experience with MCP, agent catalogs, workflow engines, durable execution, event-driven systems, OpenSearch, or Textract.

• Experience with incremental cross-cloud migrations, provider abstraction, private connectivity, or Azure-to-AWS transitions.

• Experience implementing human approvals, preview and commit workflows, provenance records, temporary workspaces, or capability-based policies.

ABOUT SONATA SOFTWARE

For more information, please visit www.sonata-software.com 

Sonata Software is an Equal Opportunity Employer encouraging diversity in the workplace. All qualified applicants will receive consideration for employment without regard to race, national origin, gender identity, age, religion, disability, sexual orientation, veteran status, marital status, or any other characteristics protected by law