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Text pipelines: tokenization, fine-tuning, evaluation, and guardrails for user-facing language features.
Practical Machine Learning experience applied to LLM features, retrieval, agents, and evaluation in production or rigorous pilots.
Title
AI Agent Engineer — travel copilots
Nubank
Nubank — Nubank vagas, vagas Nubank, and Nubank careers for GenAI in São Paulo.LLM Engineer (hybrid SP): Portuguese/Spanish GenAI for credit, care, and product copilots.MissionsShip GenAI features with multilingual evals and guardrails.Partner with risk and product on measurable lift.Stack &…
Perks · Equity, hybrid SP, VR/VA, saúde.
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Stripe
Stripe processes payments globally and is expanding LLM-assisted surfaces carefully.AI Security Engineer: threat model LLM apps—prompt injection, data exfil, supply-chain, and abuse.MissionsDesign defenses and monitoring for LLM features in regulated payment flows.Run red teams and convert findings…
Perks · Equity, hybrid Bay Area, security training.
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Flutterwave
Flutterwave — Flutterwave careers for payments AI across Africa from Lagos.LLM Engineer (hybrid Lagos): fraud copilots, support RAG, and ops assistants.MissionsShip LLM workflows with payment-domain guardrails.Improve retrieval quality for ops knowledge bases.Stack & environmentPython,…
Perks · Equity, hybrid Lagos, remote-flexible Africa.
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Cohere
Cohere delivers enterprise LLM APIs — AI jobs Vancouver / AI jobs in Vancouver coverage.LLM Engineer (hybrid Vancouver): enterprise RAG, embeddings, and customer rollout quality.MissionsImprove retrieval and answer quality for B2B deployments.Partner with customers on evals and guardrails.Stack…
Perks · Equity, hybrid Vancouver, learning budget.
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Shopify
Shopify powers millions of merchants — engineering hubs include Shopify Ottawa.GenAI Engineer (hybrid Ottawa): merchant copilots and commerce GenAI — targets Shopify Ottawa / Shopify jobs Ottawa.MissionsShip merchant GenAI features with safety and cost controls.Partner with ranking/fraud teams on…
Perks · Equity, hybrid Ottawa, wellness stipend.
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