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> Why would a company choose someone who doesn’t know the stack they are using over someone who does? Let alone 6-12 months. > Knowing the ecosystem, best pract

> Why would a company choose someone who doesn’t know the stack they are using over someone who does? Let alone 6-12 months. > Knowing the ecosystem, best practices, frameworks, etc takes longer than a few weeks. > Sure I could learn Java or Swift in a few weeks, but does that mean I would be a competent Android or iOS developer? I would separate this into two separate categories - big tech companies (or others with similarly large shared internal infra) and others. For big tech companies, for most positions, the tech stack is proprietary internal stuff such that knowing the language and best practices only get you about 10% of the way. For other types of companies, it's generally more important that you hire people with the right business context than the exact tech stack. With that said, native mobile development isn't just a stack - it's more of a different, though overlapping, career path - the main reason not to hire non-mobile developers into a mobile role isn't that the stack is different and takes time to learn, but that the workflow is so different that they may or may not know what it is that they are even signing up for. Hypothetically, you'd rather hire someone with Xamarin background with no Java experience for an Android java role, than someone with no mobile dev experience, but lots of Java backend experience. My first mobile development experience was a moderately complex Android project on an app that was used by tens of millions of people daily. There was no ramp-up - I had zero prior experience before signing up for this project, never even played around with any mobile development before and I had never professionally programmed in Java - and I was the sole engineer working on both mobile and backend. It was a little painful but everything shipped on time.

abtinf 7y ago
> It was a little painful but everything shipped on time. Your last sentence would seem to contradict the entire body of your comment. You describe mobile development as a fundamentally different thing, but then your first gig was to work on a large project, the result of which was shipping on time at the cost of a “little” pain.
- candybar 7y ago
  That's fair - what I meant by it being a different career isn't that skills aren't transferable at all but that you solve different kinds of problems entirely, as distinct from a difference in stack. And if you hired me then as a mobile developer, I'd have quit, so you don't want to hire non mobile engineers into mobile roles. Language/stack is a red herring here in the sense that Java backend development is a lot closer to Ruby backend development than it is to Android development.
  - scarface74 7y ago
    I don’t know Ruby. But I can tell you the difference between having the rails of the compiler and type safe language and having those rails taken away in a language like Javascript and Python caused a lot of heartache early on.
    - candybar 7y ago
      This is fair too but I think most experienced engineers for whom stack is a valid consideration have some experience with at least one dynamically typed language and one statically typed language and can self-select out of roles if they have a strong preference either way. And I don't know anyone for whom this was an actual blocker as opposed to an annoyance (in either direction) that they got used to after a while. On the whole, I think it's less likely for this to be a serious issue than, say, the details wrt how the system is architected and how the organization is run, some of which you won't really get to know until you start.
  - abtinf 7y ago
    > And if you hired me then as a mobile developer, I'd have quit, so you don't want to hire non mobile engineers into mobile roles. That is a great point. I’ve also had the experience of working for a short time on a system, knowing that I would hate for it to become a regular part of my work. So hiring someone with experience is one way to mitigate staff turnover from undesirable tasks.

abtinf 7y ago

> It was a little painful but everything shipped on time. Your last sentence would seem to contradict the entire body of your comment. You describe mobile development as a fundamentally different thing, but then your first gig was to work on a large project, the result of which was shipping on time at the cost of a “little” pain.

candybar 7y ago
That's fair - what I meant by it being a different career isn't that skills aren't transferable at all but that you solve different kinds of problems entirely, as distinct from a difference in stack. And if you hired me then as a mobile developer, I'd have quit, so you don't want to hire non mobile engineers into mobile roles. Language/stack is a red herring here in the sense that Java backend development is a lot closer to Ruby backend development than it is to Android development.
- scarface74 7y ago
  I don’t know Ruby. But I can tell you the difference between having the rails of the compiler and type safe language and having those rails taken away in a language like Javascript and Python caused a lot of heartache early on.
  - candybar 7y ago
    This is fair too but I think most experienced engineers for whom stack is a valid consideration have some experience with at least one dynamically typed language and one statically typed language and can self-select out of roles if they have a strong preference either way. And I don't know anyone for whom this was an actual blocker as opposed to an annoyance (in either direction) that they got used to after a while. On the whole, I think it's less likely for this to be a serious issue than, say, the details wrt how the system is architected and how the organization is run, some of which you won't really get to know until you start.
- abtinf 7y ago
  > And if you hired me then as a mobile developer, I'd have quit, so you don't want to hire non mobile engineers into mobile roles. That is a great point. I’ve also had the experience of working for a short time on a system, knowing that I would hate for it to become a regular part of my work. So hiring someone with experience is one way to mitigate staff turnover from undesirable tasks.