AI is not a "Junior Engineer"
It's often said that tools like ChatGPT, Claude, or Co-Pilot are like having a Junior Engineer — or, if you ask Mark Zuckerberg, even a Mid-Level Engineer — at your fingertips. However, this comparison does a disservice to the true value that junior engineers bring to a team. While it's undeniable that AI can generate code at an astonishing speed, writing code has never been the sole purpose of a junior engineer nor, for that matter, of any engineer at any level.
If senior engineers are valued for their deep expertise and problem-solving skills that go beyond just writing code, then junior engineers, too, bring unique qualities that can't be replicated by AI. They offer fresh perspectives, unfiltered curiosity, and a drive to challenge the status quo. Their ability to question assumptions and approach problems with a beginner’s mindset can be a catalyst for innovation.
Unlike more seasoned engineers who may become set in their ways, junior engineers can bring an infectious enthusiasm to a team. They are eager to learn, unafraid to experiment, and more willing to take risks — qualities that can push teams out of complacency. Some of the most creative and impactful engineers I’ve had the fortune of working with had only a few years of experience; their willingness to explore new ideas and tackle problems head-on made them invaluable contributors.
Of course, junior engineers aren't without their challenges. Enthusiasm without experience can sometimes lead to inefficiencies or missteps. This is precisely why the dynamic between junior and senior engineers is so powerful. Senior engineers provide guidance, helping juniors refine their instincts and channel their energy productively. Meanwhile, juniors reinvigorate teams, reminding seasoned engineers of the excitement and passion that drew them to software engineering in the first place.
Ultimately, software engineering isn’t about how many lines of code you write — or indeed generate. It’s about solving problems effectively. The best solutions come from diverse teams where experience and fresh perspectives work in harmony. So, the next time someone claims that AI can replace a junior engineer, remind them that the true value of juniors goes far beyond just writing code — it’s about shaping the future of engineering itself.