Senior AI Engineer

Posted 1 day agoViewed
120000 - 150000 USD per year
BrazilFull-TimePayment Orchestration
Company:Sierra Studio
Location:Brazil
Languages:English
Seniority level:Senior, 5+ years
Experience:5+ years
Skills:
AWSBackend DevelopmentPythonArtificial IntelligenceGCPMachine LearningMLFlowPyTorchSoftware ArchitectureProduct DevelopmentAzureData engineeringGoTensorflowCI/CDRESTful APIsDevOps
Requirements:
5+ years of professional experience in AI/ML development At least 2 years focused on LLMs, RAG, or agentic systems Proven experience designing and deploying systems using models like GPT, Claude, Gemini, including RAG pipelines Hands-on experience with Crew.ai, LangChain, LangGraph, or similar frameworks for agentic workflows Expertise in supervised fine-tuning (SFT), LoRA, or custom dataset adaptation Proficiency in Python, GO, and AI/ML libraries such as PyTorch, TensorFlow, or JAX Experience designing scalable AI systems in AWS, GCP, or Azure Deep understanding of vector databases, model serving, and inference optimization Familiarity with LangSmith, LangFuse, or equivalent LLM performance tools Expertise in integrating AI systems with RESTful APIs Proficiency with ML flow and LangChain Good understanding of traceability tools Extended backend experience Minimum 2 years tenure in current company Very good English communication skills
Responsibilities:
Architect, build, and deploy LLM-powered applications Design autonomous AI systems for technical analysis, testing, troubleshooting, and decision-making Develop AI-driven tools to improve efficiency, accelerate innovation, and drive revenue growth Identify areas for AI-driven efficiency gains Build AI systems for scaling operations without exponential headcount growth Lead fine-tuning and contextual optimization of AI models Continuously refine AI model performance Ensure adherence to privacy, compliance, and ethical AI principles Collaborate with data, product, and infrastructure teams on the AI roadmap Experiment with emerging AI technologies
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