Prompt Engineer / AI Agent Developer

Job not on LinkedIn

🔥 12 hours ago

🇧🇷 Brazil – Remote

⏰ Full Time

🟡 Mid-level

🟠 Senior

🤖 AI Engineer

👻 Ghost score 10%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Stefanini Brasil

WebsiteLinkedInAll Job Openings

10,000+ employees

Founded 1987

💼 Consulting

🏥 Healthcare

📦 Logistics

Consulting • Healthcare • Logistics

Stefanini Brasil is a leading provider of digital transformation solutions, offering a range of services including artificial intelligence, cybersecurity, cloud enablement, and consulting. With over 35 years of experience, the company focuses on integrating innovative technologies to help organizations enhance their operations and customer experiences across various industries. Their expertise extends to sectors like healthcare, retail, and industrial goods, enabling businesses to optimize processes and drive value through technology.

📋 Description

• Configure system prompts, instructions, and agent conversation flows on the client’s platform • Compare and select the most suitable model for each agent, considering quality, cost, and latency • Adapt instructions to the specific characteristics of each LLM • Define response-quality criteria and conduct iterative testing with structured test cases • Apply guardrails, handle out-of-scope responses, and implement mitigation strategies for prompt injection • Document prompt engineering standards, versions, and best practices for reuse and team enablement

🎯 Requirements

• Proven hands-on experience in prompt engineering on real-world projects using multiple LLM families, such as OpenAI/GPT, Anthropic/Claude, Google/Gemini, and Meta/Llama • Hands-on experience developing AI agents in squads, including orchestration, tool use, and context-memory management • Experience with metrics and quality testing for AI-generated responses • Exceptional command of written Portuguese, with clarity, precision, grammatical accuracy, and appropriate tone • Familiarity with Git and deployment through existing CI/CD pipelines • Ability to quickly learn and operate new proprietary platforms • Experience with RAG architectures, particularly evaluating responses based on documentary sources • Knowledge of Python for test automation and LLM evaluation • Experience working on projects involving sensitive data under Brazil’s LGPD or in the healthcare sector

🏖️ Benefits

• Meal or food allowance • Discounts on courses, universities, and language institutions • Stefanini Academy — a platform offering free, up-to-date online courses with certificates • Mentoring • Benefits club offering discounts on consultations and medical tests • Health insurance • Dental insurance • Benefits and discounts club with offers at leading establishments • Travel club • Pet benefits program