https://salaries.devops-jobs.net/download/ and https://www.reddit.com/r/devops/comments/prq6yj/a_first_update_on_our_devopscloudsre_salary_survey/

salaries.groovy

import groovy.json.JsonSlurper 

// criteria
String title_contains = 'DevOps' // required
String salary_currency = 'USD' // or null; example: CAD, CHF, DKK, EUR, GBP, HKD, INR, NZD, PHP, USD
String company_location = 'US' // or null; example: AT, BG, CA, CH, CR, DE, DK, ES, FR, GB, IL, IN, IT, LT, NL, NZ, PH, PT, RO, RU, US
Boolean display_usd = true // false for native currency

List salaries = new JsonSlurper().parse(new File('/home/sam/Downloads/salaries.json'))

//stuff
salaries.findAll {
    (!company_location || it.company_location == company_location) &&
    it.job_title.toLowerCase().contains(title_contains.toLowerCase()) &&
    (!salary_currency || it.salary_currency == salary_currency)
}*.experience_level.sort().unique().each { experience_level ->
    double average = 0.0
    double max = 0.0
    double min = 0.0
    int dataset = 0
    salaries.findAll {
        (!company_location || it.company_location == company_location) &&
        it.job_title.toLowerCase().contains(title_contains.toLowerCase()) &&
        (!salary_currency || it.salary_currency == salary_currency) &&
        it.experience_level == experience_level
    }.with {
        display_usd ? it*.salary_in_usd : it*.salary
    }*.toInteger().with { s ->
        average = s.sum() / s.size()
        max = s.max()
        min = s.min()
        dataset = s.size()
    }
    println ("${experience_level}: min ${min}, max ${max}, average ${average} (${dataset} salary entr${(dataset == 1)?'y':'ies'})")
}
null