{"id":4033868,"url":"https://alion.io/job/handoff-ai-engineer","title":"AI Engineer","company":{"id":2348737,"name":"Handoff","domain":"handoff.ai","url":"https://alion.io/company/handoff-ai","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":null},"role":"AI/ML","role_family":"AI/ML","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["São Paulo, Brazil"],"countries":["BR"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":35000,"max":48000,"currency":"BRL","period":"month","gross":null,"usd_annual":105192},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"Function Calling","optional":false},{"name":"Langfuse","optional":false},{"name":"LangGraph","optional":false},{"name":"LangSmith","optional":false},{"name":"LLM","optional":false},{"name":"Python","optional":false},{"name":"SQL","optional":false},{"name":"Structured Outputs","optional":false},{"name":"TypeScript","optional":false},{"name":"LangChain","optional":true}],"status":"live","first_seen_at":"2026-11-10T17:51:52Z","employer_posted_date":"2026-11-10","last_verified_at":"2026-11-11T00:46:53Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"AI Engineer at Handoff\nYou’ll own how well Handoff’s AI works in production: its quality, speed and cost, across all of our products. When something degrades, you find out why, fix it and explain what happened.\nMost of the work is experimentation. You’ll form a hypothesis, test it against evals and real traffic, and ship what the data supports.\nWhat you'll do\nOwn our core AI metrics and the dashboards and alerts behind them.\nRun experiments on prompts, tools, context and models, from offline evals to controlled rollouts, and decide with data.\nBuild the evals and observability that let the whole team ship AI changes safely.\nImprove what customers judge us on: accurate outputs, reliable actions and fast answers.\nShape the architecture of our agents as the product grows: how context, tools and memory scale.\nEvaluate new models and providers as they are released, and lead migrations when they are worth it.\nWork across Handoff’s products and teams, wherever AI quality, speed or cost needs attention.\nTurn customer-reported AI problems into diagnosed causes and measurable fixes.\nShare what you learn and raise the bar for AI engineering across the team.\nAbout You\nYou’ve owned an LLM-powered feature or agent in production and can point to a metric you moved.\nYou design experiments carefully and can tell a real improvement from noise.\n5+ years of software engineering experience, with strong Python and working knowledge of TypeScript/Node, SQL and cloud-based architectures.\nPractical experience with agents: tool calling, context management, retrieval and structured outputs, ideally with a framework such as LangGraph.\nExperience building evals and using tracing tools such as LangSmith, Langfuse or similar.\nYou’re comfortable with ambiguity and switching between problems, and you set your own agenda from the data.\nYou care whether the output is right for the customer, not only whether the model call succeeded.\nProven experience working in a startup environment is a must.\nWhat we offer\n Competitive salary in USD\n Attractive stock options\n Unlimited PTO\n Relocationallowance\n Top-notch equipment\n Team offsites around the 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