CareerPlan

Senior Full-Stack Engineer (AI-Focused)

ArgentinaRemoteFull-time$84k–$100k2026-11-09
Remote

Core

Building AI features (UI, APIs, LLM layer, agents, RAG, MCP integrations) for a SaaS product serving millions of users, with a focus on speed, reliability, and cost.

Role type

Senior Full-Stack Engineer (AI-Focused)

Builds

AI features, in-product AI agents, LLM pipelines, and MCP integrations for a B2B SaaS platform

Domain

B2B SaaS, Artificial Intelligence, Large Language Models

Deliverable

production ML models

Required skills

TypeScript, JavaScript, Elixir, Python, LLM feature development, RAG, tool calling, agent orchestration, WebSocket architecture, AI coding agents

Preferred skills

MCP server development, embedded JavaScript SDKs, LLM tracing and observability, product adoption strategies

Technologies

TypeScript, JavaScript, Elixir, Python, WebSockets, LLM APIs, RAG, MCP, Claude Code

Responsibilities

Design and implement AI features from interface to model call; build and evaluate in-product AI agents; maintain high-traffic LLM pipelines; integrate MCP tools; optimize AI feature performance and cost; define AI roadmap and architecture; establish coding agent workflows and guardrails

Seniority

Senior, hands-on IC