At my company there are like 20-30 engineers involved in search (using ElasticSearch). The code has grown massively and they are all bogged down fixing small st

At my company there are like 20-30 engineers involved in search (using ElasticSearch). The code has grown massively and they are all bogged down fixing small stuff, improvements, doing A/B-tests and the like. They also have a whole ETL setup to gather and transform data from a lot of different sources. In my spare-time I build a small search function with ElasticSearch for a big dataset. The use case was almost identical; and I feel my small setup works better, faster and has more options than where I work. I don't know, things just grow over time, old developers leave and new ones join who will never be as productive as the original devs were (it's basically rewriting someone else's book without breaking it). But I'm puzzled about it too sometimes.