fde.gus.place ~ $
// hands-on course · forward deployed engineer · es/en

Nine fictional clients. Nine real repos.

Learn the Forward Deployed Engineer craft by doing it: discovery with a client who answers in character, ambiguous requirements, a mid-project twist and a production delivery. With your own AI key, no subscriptions.

2 free assignments9 assignments in total150+ h of real work0 € of AI cost for me: you bring your key
// how it works

Each assignment is a full FDE cycle

01

Ambiguous brief

A client email and an initial document with gaps and contradictions on purpose. Like real life.

02

Simulated discovery

The AI plays the client's people. When you close the meeting it steps out of character and grades you: what you found out, what you missed.

03

Steps with a mentor

Between 10 and 15 steps per assignment, each with a guide, checks, suggested branch and PR, and a technical mentor who reviews your code.

04

Twist and delivery

The requirements change that always arrives, the quiz, and a public repo of yours you can show in an interview.

// the nine assignments

From a simple integration to an agent in production

difficulty 1 → 9 · 6 to 35 h per assignment
// your key, your cost, your control

You bring the AI, which is why the course is cheap

The simulated client and the mentor run on your own API key: OpenAI, Anthropic, DeepSeek, Alibaba Qwen or any compatible provider. I don't pay for your AI, you don't pay a monthly subscription.

  • The key is stored only in your browser. On each request it travels encrypted to this server, which forwards it to the provider and discards it: never stored, never logged.
  • It is used for the course only: the simulated client, the mentor and the connection test. Nothing else.
  • Change it or delete it whenever you want from settings, in one click.
  • A ChatGPT or Claude subscription won't do: you need an API key. It takes two minutes to create.
settings › AI provider
OpenAIAnthropicDeepSeekAlibaba QwenMistralGroq
API key
sk-••••••••••••••••••••••••
model: gpt-4.1-mini● saved in this browser
Set up key
// pricing

One payment. No subscription. Yours forever.

free
0 €
  • Assignments 1 and 2 in full
  • FDE method: phases, questions and templates
  • Simulated client and mentor with your key
  • Progress saved in your account
Start for free
full course
29 €one-time payment, VAT included
  • All nine assignments, 1 to 9
  • Every future update
  • Spanish and English
  • Secure payment with Stripe
Unlock the course
// who makes it

Gustavo Jiménez Gamo

Forward Deployed Engineer · Madrid

Twenty years building product, ten of them as a Product Manager. I work inside the customer's team, from the first definition of the use case to the system running in production: Kérastase (L'Oréal), A-Secur and my own AI-agent products such as papaia. This course is the method I use, turned into nine assignments. More at gus.place.

// questions

Do I need to know how to code?

Yes. It is built for experienced developers moving into the FDE role: you write the code, with whatever agents you use.

How much will the AI cost me?

It depends on the model and on how much you talk to the simulated client. With a budget model, cents per assignment. You'll see the estimated usage in settings.

Do you store my key?

No. It lives in your browser. On each request it travels encrypted to this server, which forwards it to the provider and neither stores nor logs it. Delete it whenever you want.

Is the content in English?

The site is. The nine assignments are in Spanish today; the English version of the content ships as an included update.