"How long before a new developer is actually useful?" The answer depends less on the developer than on your onboarding. With a senior profile and structured integration, productivity arrives in days — not weeks. Here's the method.

Before day one: prepare the ground

The classic mistake is improvising everything on day one. Prepare ahead:

  • access: code repository, project management, chat, test environment;
  • an architecture overview: a simple diagram beats a long doc;
  • an identified first task, neither trivial nor critical (see below);
  • the name of the reference person the developer can turn to.

A missing access on day one is a lost day. This preparation happens while the developer finalises their availability.

Day one: context before code

Don't throw the developer into the code in the first hour. Give them first:

  • the why of the product: who the users are, what problem it solves;
  • a guided tour of the code by a team member;
  • access to the rituals: bring them into the daily from day one, even as an observer.

Product context accelerates everything else: a developer who understands the goal makes better technical decisions, faster.

The first task: neither trivial nor critical

The choice of first task makes all the difference:

  • Too trivial ("fix this typo"): teaches nothing about the real code.
  • Too critical ("rebuild the payment system"): risky while the developer doesn't know the terrain.
  • Ideal: a real fix or small feature that crosses several layers of the code and goes through a genuine code review.

This first task teaches the code, the conventions, and the process — while producing real value.

The first week: rituals and reviews

Lasting productivity comes from integration into the team's rituals:

  • the daily syncs and surfaces blockers early;
  • code reviews transmit conventions and keep quality under your control;
  • a regular check-in with the reference contact resolves friction before it sets in.

How long, in total?

With an available senior profile and this structured onboarding, the sequence is fast: available in a few days to two weeks, first real contribution within the first week, autonomy on the scope in two to three weeks. Far from the months of a permanent hire.

That's exactly what MG Talents enables: senior React / Node.js developers available quickly, and a two-week trial that starts directly on real tasks from your backlog — onboarding is part of the trial, not an extra step.