Senior Full-Stack Engineer (PST time)

Role details

ABOUT THE ROLE Join an early-stage team building AI-powered software for transportation and logistics. You will own production features end to end, with a focus on voice and email agents that support high-stakes freight workflows. WHAT YOU'LL DO - Scope problems with customers, build across the stack, deploy features, and monitor their production performance. - Develop voice and email agents, including speech pipelines, LLM orchestration, and deterministic safeguards for prices, terms, and actions. - Create evaluation systems using golden datasets, regression checks, hallucination testing, and tool-call correctness checks. - Build retrieval and matching systems with embeddings and reranking, balancing cost, latency, and scale. - Instrument production systems and use observability and rollout strategies to operate software reliably. WHAT WE'RE LOOKING FOR - At least 5 years of professional software engineering experience, with end-to-end ownership of production software across the stack. - Hands-on experience taking LLM features to production, including architecture, tool-calling, and retrieval, plus evaluation and testing of AI systems. - Experience shipping with React, Next.js, Supabase, and Python. - Familiarity with agent or voice tooling such as Pipecat, LangChain, LiveKit, or equivalent tools. - Strong system design fundamentals, including streaming, concurrency, SQL, and reasoning about scale and cost. - Experience with production observability and deployment rollouts, and regular use of AI coding assistants with careful verification. - Voice or real-time systems experience, early-stage engineering experience, complex tool-use systems, or substantial open-source and personal projects are valuable. COMPENSATION & BENEFITS Salary range: $5,000 to $9,000 USD annually. Visa sponsorship is not available. LOCATION Remote, based in Latin America.