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[Job- 32285] Senior AI Engineer, Brazil

CI&T· Prod_Centaurus+ /
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Hybrid (Brazil)HomeofficePosted 5d ago

About the role

Senior AI Engineer to join nearshore team building an AI-powered media planning platform. Focus on developing, evaluating, and improving intelligent AI agents powered by Large Language Models (LLMs) using AWS Bedrock and modern AI technologies, ensuring accurate, secure, and scalable AI outputs.

Responsibilities

  • Design, develop, and maintain AI agents and LLM-powered applications using Python and AWS services.
  • Implement and optimize prompt engineering, agent orchestration, and intelligent decision-making workflows.
  • Develop evaluation frameworks to measure agent accuracy, reliability, and behavioral consistency.
  • Establish performance baselines, automated tests, and regression validation for changes to agent behavior.
  • Implement guardrails and validation mechanisms to ensure safe and reliable AI-generated outputs.
  • Develop intelligent information retrieval, filtering, ranking, and selection strategies using LLMs.
  • Investigate and resolve issues related to hallucinations, incorrect interpretations, and inconsistent agent responses.
  • Build end-to-end AI features integrating LLMs with backend APIs, document processing, and cloud infrastructure.
  • Improve agent observability through execution tracing, session tracking, and production monitoring.
  • Collaborate with engineering and product teams to deliver scalable, production-ready AI solutions.
  • Optimize LLM performance, latency, and operational costs through experimentation and measurable improvements.

Qualifications

  • Solid professional experience in AI engineering, machine learning engineering, or software development with production AI applications.
  • Strong proficiency in Python and experience developing APIs, integrations, and automated tests.
  • Hands-on experience building applications using Large Language Models (LLMs) and agentic AI workflows.
  • Experience with prompt engineering, LLM orchestration, and structured output generation.
  • Experience evaluating LLM outputs, implementing testing strategies, and measuring AI application quality.
  • Understanding of LLM limitations, including hallucinations, response variability, and reliability challenges.
  • Experience with AWS services (Bedrock, Lambda, S3, CloudWatch, or similar).
  • Strong knowledge of software engineering best practices, CI/CD, and cloud-based application development.
  • Strong analytical and problem-solving skills with the ability to troubleshoot complex agent behavior.
  • Advanced or fluent English communication skills (both written and verbal) are essential for collaboration in a remote environment.

Skills

Required:PythonLarge Language Models (LLMs)Prompt engineeringAWS BedrockLLM evaluation & testing

Benefits

  • Health and dental insurance
  • Meal and food allowance
  • Childcare assistance
  • Extended paternity leave
  • Partnership with gyms and health and wellness professionals via Wellhub (Gympass) TotalPass
  • Profit Sharing and Results Participation (PLR)
  • Life insurance
  • Continuous learning platform (CI&T University)
  • Discount club
  • Free online platform dedicated to physical, mental, and overall well-being
  • Pregnancy and responsible parenting course
  • Partnerships with online learning platforms
  • Language learning platform
  • And many more!
Last updated Oct 21, 2026. Interested? Apply on the company site.

About CI&T

Technology Transformation Specialists

A global technology consulting and digital transformation firm that combines human expertise with AI to develop innovative solutions.

Technology transformationAISoftware developmentCloud servicesDigital experienceData analyticsApplication modernizationConsulting
Company profileWebsite

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