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In fast-paced organisations that launch a lot of features on a quarterly basis and teams with large sizes, how should a tech lead or team members ensure that everyone knows about everything or is enabled to get to know about it?

Quite often, whenever a new feature comes in, it could be repurposing technology built for other features as well. But, given the pace at which these are developed, it is often hard to know what everyone is working on. Sometimes, each of these features may have idiosyncracies that may be getting missed out by new joiners, especially due to the volume of information, especially for teams that have been in existence since a long time.

I recall once when changes for a new feature done by a developer reverted some conditionals for an older feature, thus causing an outage. How do you prevent this and ensure knowledge of everything is available to all, especially to people new to an organisation?

Also, are there some general practices to ensure that these are easily discoverable? Video recordings are time consuming to go through, and wikis though they exist, are sometimes difficult to navigate, when you don't know what you are searching for? I am thinking of something like a mind map could help here, but what are your thoughts?

I am trying to get promoted to Lead Software Engineer, which relates to an E5 level at Meta, if I am not wrong. I have seen several engineers in my organisation coast at the current level I am.

I wanted to understand if there are some key things I should be doing in order to perform at a Tech Lead level, so that I am promoted to one as well. This would be a bit long question, but please bear with me.

Following are some of the things highlighted in a few discussions:

1. Should have demonstrated complex backend system designs - How do I create this opportunity to build a complex system for myself? Often, the projects we are a part of don't require complex solutions.
2. Have a very strong code quality
3. Mentor other engineers - I started having 1:1s with Junior engineers on how to grow. Have not been doing this with Senior Engineers, but I try to jump in calls with them whenever they need some help. Often, the credit goes hidden, and sometimes it does bother me, but not sure if there is some way around it. What are your thoughts?
4. Handling production outages and incidents - Trying to be on top of it. Recently, have been putting out short term fixes, but alongside working on some libraries to fix it in an extensible way and have a larger impact with other teams as well. Sometimes, having visibility for my work in other teams seems to be difficult, but trying my way around this. If there is something you can recommend, that would be great.
5. Should I mention in my skip levels that this is something I am targeting for myself? - Right now, my focus is to try to uplift the code quality, work on larger designs (a question mentioned wrt this), trying to uplift the team (I have created a channel where I share stuff that can help the team upskill, brief nuggets of information on how to write good code etc. Doing this almost twice a week for around 2 months now), trying to mentor engineers within the team.

Another aspect is that my team would be getting changed soon due to organisational requirements. Given that, How do I make sure I am on the right trajectory to getting promoted ? (One thing on top of my mind is that I would be asking for junior engineers whom I can work with and try uplifting, alongside asking for opportunities/projects that would have large visibility and impact.)

Do you have any other advice for me?