Growth Engineer

present of AI; Brasil; Remote; BRL 120,000 - 240,000; Full time

Job summary

present of AI is seeking a hands-on growth engineer who owns the entire acquisition and activation funnel—from initial idea to fast experiments and scalable growth loops. You will write TypeScript, React and Node.js (NestJS a plus), make decisions from data and experiments, and turn big hypotheses into small, fast tests that yield quick answers.

This role emphasizes speed, judgment, and independence: you set your own direction, choose which experiments to run, and measure impact on small

Qualifications

• Proficient in TypeScript, React and Node.js with backend knowledge.
• Ability to translate data and experiments into actionable tests.
• Willing to work independently and set direction.

Responsibilities

• Own acquisition and activation funnel end-to-end.
• Run rapid experiments and interpret results.

Skills

TypeScript

React

Node.js

NestJS

Tools

NestJS

Job description

This role owns the whole acquisition and activation funnel, from first idea through fast experiments to growth loops that bring in many businesses. A strong candidate writes TypeScript, React and Node.js (NestJS a plus), decides from data and experiments, and breaks big hypotheses into small tests that give quick answers. Native German and fluent English are required, and the person must set their own direction without being told which experiments to run.

How it fits the AI era

The company builds AI phone and chat agents, so the product itself is AI, and this role grows its adoption. AI speeds up building pages, tools and experiments, but choosing which bets to make, reading results and owning the funnel stay human. The work rewards speed and judgment more than routine coding.

How it builds AI experience

Working here means growing a product that answers and makes calls, transcribes conversations and handles customer requests, so the person gains hands on feel for how AI agents reach small businesses. Building internal tools and automations to scale acquisition adds practical experience with AI assisted workflows. Showing prior work with funnels, tracking and fast experiments is the way to build that fit.

Worth showing

• TypeScript React Node.js
• NestJS experience
• Funnel and experiment ownership
• Analytics and attribution

This is our own read, written from the employer's posting and the company's Spotlight. The employer's posting is the source of truth for the role.

About fonio.ai

Per the company, fonio.ai provides AI phone assistants that answer and make business calls, transcribe conversations, schedule appointments and handle customer requests.