Every few months someone posts a thread about how developers should pick one thing and go deep. Frontend or backend. React or Vue. Python or JavaScript. I've been writing code for 15 years across PHP, C#, JavaScript, Vue, React, Laravel, Python, Unity, Arduino, .NET, and Angular. The projects that shipped on time had adaptable developers. The ones that stalled had specialists waiting for "their" part.
The Pattern I Keep Seeing
A project needs a REST API, a Vue frontend, and a hardware integration with Arduino. Three specialists means three schedules to coordinate, three people who can't help each other when one falls behind, and three separate mental models of the same system.
Or one developer who can move between all three. Not an expert in each, but competent enough to ship working code and unblock the project when something gets stuck.
I've been that developer on dozens of projects. At PB Tech, I worked across PHP, SQL, Solr search, and REST APIs. At commercebuild, it was Laravel, payment gateway integrations, and Elasticsearch. Freelance projects had me jumping between Unity game engines and C# desktop applications in the same week. At RIVER, I'm doing enterprise AI integrations that touch Python, TypeScript, and Laravel in a single pipeline.
None of that would have happened if I'd specialised in one language at 20.
Why Enterprise Needs Breadth
Enterprise projects don't respect technology boundaries. A typical integration touches legacy PHP, a modern React frontend, a Python ML service, and a .NET internal system that nobody wants to maintain but everyone depends on. The integration problem is real, and it doesn't care about your job title.
When I join a project, I can read all of those codebases. I can trace a bug from the frontend through the API layer into the database and back. I can suggest an architecture change that a specialist wouldn't see because they only live in one layer.
The specialist knows more about their layer than I do. That's fine. But they can't debug across boundaries, and in enterprise delivery, the bugs are almost always at the boundaries.
What I'm Not Saying
I'm not against specialisation. The best teams have people who go deep. You want someone who really knows database performance tuning, or who's spent years on accessibility, or who can write CUDA kernels.
But you also need people who can pick up whatever the project requires and start producing useful work within days, not months. The industry treats breadth as a weakness, like you couldn't commit to one thing. In practice, it's the thing that keeps projects moving.
I've built scrapers in C#, game engines in Unity, eCommerce platforms in Laravel, IoT prototypes with Arduino, and AI integrations in Python. Each one taught me something that made me better at the next one. The Unity work taught me state management patterns I still use in frontend development. The scraper work taught me error handling and retry logic that I apply to API integrations. Arduino taught me to think about constraints.
The Real Specialisation
If I have a specialisation, it's shipping. Whatever the stack, whatever the timeline, whatever the constraints - figure out what needs to happen and make it work. That's a skill too. It just doesn't fit neatly into a job title.
If you're building something that needs that kind of adaptability, we should talk.