Full-Stack Engineer

ABOUT THE ROLE Join a small, early-stage AI team building production software for freight and logistics workflows. You will own full-stack features from customer discovery through deployment and production monitoring, with a focus on reliable voice and email agents. WHAT YOU'LL DO - Scope problems with customers, build solutions across the stack, deploy weekly, and monitor production performance. - Develop voice and email negotiation agents, including speech pipelines, LLM orchestration, and deterministic safeguards for prices and terms. - Build evaluation systems with golden datasets, offline and online checks, regression and hallucination tests, and tool-call correctness checks. - Develop retrieval and matching systems using embeddings and reranking, with attention to cost and latency. - Instrument production systems and support observability and rollout strategies. WHAT WE'RE LOOKING FOR - At least 5 years of professional software engineering experience, including end-to-end ownership of production software across the full stack. - Hands-on experience taking LLM features to production, including architecture, tool-calling, retrieval, and systematic evaluation. - Production experience with React, Next.js, Supabase, and Python. - Experience with agent or voice tooling such as Pipecat, LangChain, LiveKit, or equivalent systems. - Strong system design fundamentals, including streaming, concurrency, SQL, and reasoning about scale and cost. - Experience with production observability and deployment rollouts, and daily use of generative AI coding tools with careful verification. - Voice or real-time systems experience, early-stage engineering, complex tool-use systems, or substantial open-source and personal projects are valuable. COMPENSATION & BENEFITS Salary: $5,000 to $9,000 USD per month. Visa sponsorship is not available. LOCATION Remote, LATAM.